[feature] Status thread mute/unmute functionality (#2278)

* add db models + functions for keeping track of threads

* give em the old linty testy

* create, remove, check mutes

* swagger

* testerino

* test mute/unmute via api

* add info log about new index creation

* thread + allow muting of any remote statuses that mention a local account

* IsStatusThreadMutedBy -> IsThreadMutedByAccount

* use common processing functions in status processor

* set = NULL

* favee!

* get rekt darlings, darlings get rekt

* testrig please, have mercy muy liege

docs/api/swagger.yaml

@@ -6527,6 +6527,44 @@ paths:
             summary: View accounts that have faved/starred/liked the target status.
             tags:
                 - statuses
+    /api/v1/statuses/{id}/mute:
+        post:
+            description: |-
+                Target status must belong to you or mention you.
+
+                Status thread mutes and unmutes are idempotent. If you already mute a thread, muting it again just means it stays muted and you'll get 200 OK back.
+            operationId: statusMute
+            parameters:
+                - description: Target status ID.
+                  in: path
+                  name: id
+                  required: true
+                  type: string
+            produces:
+                - application/json
+            responses:
+                "200":
+                    description: The now-muted status.
+                    schema:
+                        $ref: '#/definitions/status'
+                "400":
+                    description: bad request; you're not part of the target status thread
+                "401":
+                    description: unauthorized
+                "403":
+                    description: forbidden
+                "404":
+                    description: not found
+                "406":
+                    description: not acceptable
+                "500":
+                    description: internal server error
+            security:
+                - OAuth2 Bearer:
+                    - write:mutes
+            summary: Mute a status's thread. This prevents notifications from being created for future replies, likes, boosts etc in the thread of which the target status is a part.
+            tags:
+                - statuses
     /api/v1/statuses/{id}/pin:
         post:
             description: |-
@@ -6703,6 +6741,44 @@ paths:
             summary: Unstar/unlike/unfavourite the given status.
             tags:
                 - statuses
+    /api/v1/statuses/{id}/unmute:
+        post:
+            description: |-
+                Target status must belong to you or mention you.
+
+                Status thread mutes and unmutes are idempotent. If you already unmuted a thread, unmuting it again just means it stays unmuted and you'll get 200 OK back.
+            operationId: statusUnmute
+            parameters:
+                - description: Target status ID.
+                  in: path
+                  name: id
+                  required: true
+                  type: string
+            produces:
+                - application/json
+            responses:
+                "200":
+                    description: The now-unmuted status.
+                    schema:
+                        $ref: '#/definitions/status'
+                "400":
+                    description: bad request; you're not part of the target status thread
+                "401":
+                    description: unauthorized
+                "403":
+                    description: forbidden
+                "404":
+                    description: not found
+                "406":
+                    description: not acceptable
+                "500":
+                    description: internal server error
+            security:
+                - OAuth2 Bearer:
+                    - write:mutes
+            summary: Unmute a status's thread. This reenables notifications for future replies, likes, boosts etc in the thread of which the target status is a part.
+            tags:
+                - statuses
     /api/v1/statuses/{id}/unpin:
         post:
             operationId: statusUnpin
@@ -7336,6 +7412,7 @@ securityDefinitions:
             read:follows: grant read access to follows
             read:lists: grant read access to lists
             read:media: grant read access to media
+            read:mutes: grant read access to mutes
             read:notifications: grants read access to notifications
             read:search: grant read access to searches
             read:statuses: grants read access to statuses
@@ -7347,6 +7424,7 @@ securityDefinitions:
             write:follows: grants write access to follows
             write:lists: grants write access to lists
             write:media: grants write access to media
+            write:mutes: grants write access to mutes
             write:statuses: grants write access to statuses
             write:user: grants write access to user-level info
         tokenUrl: https://example.org/oauth/token

docs/swagger.go

@@ -39,6 +39,7 @@
 //	      read:follows: grant read access to follows
 //	      read:lists: grant read access to lists
 //	      read:media: grant read access to media
+//	      read:mutes: grant read access to mutes
 //	      read:search: grant read access to searches
 //	      read:statuses: grants read access to statuses
 //	      read:streaming: grants read access to streaming api
@@ -50,6 +51,7 @@
 //	      write:follows: grants write access to follows
 //	      write:lists: grants write access to lists
 //	      write:media: grants write access to media
+//	      write:mutes: grants write access to mutes
 //	      write:statuses: grants write access to statuses
 //	      write:user: grants write access to user-level info
 //	      admin: grants admin access to everything

internal/api/client/statuses/status.go

@@ -91,6 +91,10 @@ func (m *Module) Route(attachHandler func(method string, path string, f ...gin.H
 	attachHandler(http.MethodPost, PinPath, m.StatusPinPOSTHandler)
 	attachHandler(http.MethodPost, UnpinPath, m.StatusUnpinPOSTHandler)
 
+	// mute stuff
+	attachHandler(http.MethodPost, MutePath, m.StatusMutePOSTHandler)
+	attachHandler(http.MethodPost, UnmutePath, m.StatusUnmutePOSTHandler)
+
 	// reblog stuff
 	attachHandler(http.MethodPost, ReblogPath, m.StatusBoostPOSTHandler)
 	attachHandler(http.MethodPost, UnreblogPath, m.StatusUnboostPOSTHandler)

internal/api/client/statuses/statusmute.go

@@ -0,0 +1,99 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package statuses
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// StatusMutePOSTHandler swagger:operation POST /api/v1/statuses/{id}/mute statusMute
+//
+// Mute a status's thread. This prevents notifications from being created for future replies, likes, boosts etc in the thread of which the target status is a part.
+//
+// Target status must belong to you or mention you.
+//
+// Status thread mutes and unmutes are idempotent. If you already mute a thread, muting it again just means it stays muted and you'll get 200 OK back.
+//
+//	---
+//	tags:
+//	- statuses
+//
+//	produces:
+//	- application/json
+//
+//	parameters:
+//	-
+//		name: id
+//		type: string
+//		description: Target status ID.
+//		in: path
+//		required: true
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- write:mutes
+//
+//	responses:
+//		'200':
+//			name: status
+//			description: The now-muted status.
+//			schema:
+//				"$ref": "#/definitions/status"
+//		'400':
+//			description: bad request; you're not part of the target status thread
+//		'401':
+//			description: unauthorized
+//		'403':
+//			description: forbidden
+//		'404':
+//			description: not found
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) StatusMutePOSTHandler(c *gin.Context) {
+	authed, err := oauth.Authed(c, true, true, true, true)
+	if err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	targetStatusID, errWithCode := apiutil.ParseID(c.Param(apiutil.IDKey))
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiStatus, errWithCode := m.processor.Status().MuteCreate(c.Request.Context(), authed.Account, targetStatusID)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	c.JSON(http.StatusOK, apiStatus)
+}

internal/api/client/statuses/statusmute_test.go

@@ -0,0 +1,217 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package statuses_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/suite"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/statuses"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/testrig"
+)
+
+type StatusMuteTestSuite struct {
+	StatusStandardTestSuite
+}
+
+func (suite *StatusMuteTestSuite) post(path string, handler func(*gin.Context), targetStatusID string) (int, string) {
+	t := suite.testTokens["local_account_1"]
+	oauthToken := oauth.DBTokenToToken(t)
+
+	recorder := httptest.NewRecorder()
+	ctx, _ := testrig.CreateGinTestContext(recorder, nil)
+	ctx.Set(oauth.SessionAuthorizedApplication, suite.testApplications["application_1"])
+	ctx.Set(oauth.SessionAuthorizedToken, oauthToken)
+	ctx.Set(oauth.SessionAuthorizedUser, suite.testUsers["local_account_1"])
+	ctx.Set(oauth.SessionAuthorizedAccount, suite.testAccounts["local_account_1"])
+	ctx.Request = httptest.NewRequest(http.MethodPost, path, nil) // the endpoint we're hitting
+	ctx.Request.Header.Set("accept", "application/json")
+
+	// normally the router would populate these params from the path values,
+	// but because we're calling the function directly, we need to set them manually.
+	ctx.Params = gin.Params{
+		gin.Param{
+			Key:   apiutil.IDKey,
+			Value: targetStatusID,
+		},
+	}
+
+	handler(ctx)
+
+	result := recorder.Result()
+	defer result.Body.Close()
+
+	b, err := io.ReadAll(result.Body)
+	if err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	indented := bytes.Buffer{}
+	if err := json.Indent(&indented, b, "", "  "); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	return recorder.Code, indented.String()
+}
+
+func (suite *StatusMuteTestSuite) TestMuteUnmuteStatus() {
+	var (
+		targetStatus = suite.testStatuses["local_account_1_status_1"]
+		path         = fmt.Sprintf("http://localhost:8080/api%s", strings.ReplaceAll(statuses.MutePath, ":id", targetStatus.ID))
+	)
+
+	// Mute the status, ensure `muted` is `true`.
+	code, muted := suite.post(path, suite.statusModule.StatusMutePOSTHandler, targetStatus.ID)
+	suite.Equal(http.StatusOK, code)
+	suite.Equal(`{
+  "id": "01F8MHAMCHF6Y650WCRSCP4WMY",
+  "created_at": "2021-10-20T10:40:37.000Z",
+  "in_reply_to_id": null,
+  "in_reply_to_account_id": null,
+  "sensitive": true,
+  "spoiler_text": "introduction post",
+  "visibility": "public",
+  "language": "en",
+  "uri": "http://localhost:8080/users/the_mighty_zork/statuses/01F8MHAMCHF6Y650WCRSCP4WMY",
+  "url": "http://localhost:8080/@the_mighty_zork/statuses/01F8MHAMCHF6Y650WCRSCP4WMY",
+  "replies_count": 2,
+  "reblogs_count": 1,
+  "favourites_count": 1,
+  "favourited": false,
+  "reblogged": false,
+  "muted": true,
+  "bookmarked": false,
+  "pinned": false,
+  "content": "hello everyone!",
+  "reblog": null,
+  "application": {
+    "name": "really cool gts application",
+    "website": "https://reallycool.app"
+  },
+  "account": {
+    "id": "01F8MH1H7YV1Z7D2C8K2730QBF",
+    "username": "the_mighty_zork",
+    "acct": "the_mighty_zork",
+    "display_name": "original zork (he/they)",
+    "locked": false,
+    "discoverable": true,
+    "bot": false,
+    "created_at": "2022-05-20T11:09:18.000Z",
+    "note": "\u003cp\u003ehey yo this is my profile!\u003c/p\u003e",
+    "url": "http://localhost:8080/@the_mighty_zork",
+    "avatar": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/avatar/original/01F8MH58A357CV5K7R7TJMSH6S.jpg",
+    "avatar_static": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/avatar/small/01F8MH58A357CV5K7R7TJMSH6S.jpg",
+    "header": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/header/original/01PFPMWK2FF0D9WMHEJHR07C3Q.jpg",
+    "header_static": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/header/small/01PFPMWK2FF0D9WMHEJHR07C3Q.jpg",
+    "followers_count": 2,
+    "following_count": 2,
+    "statuses_count": 5,
+    "last_status_at": "2022-05-20T11:37:55.000Z",
+    "emojis": [],
+    "fields": [],
+    "enable_rss": true,
+    "role": {
+      "name": "user"
+    }
+  },
+  "media_attachments": [],
+  "mentions": [],
+  "tags": [],
+  "emojis": [],
+  "card": null,
+  "poll": null,
+  "text": "hello everyone!"
+}`, muted)
+
+	// Unmute the status, ensure `muted` is `false`.
+	code, unmuted := suite.post(path, suite.statusModule.StatusUnmutePOSTHandler, targetStatus.ID)
+	suite.Equal(http.StatusOK, code)
+	suite.Equal(`{
+  "id": "01F8MHAMCHF6Y650WCRSCP4WMY",
+  "created_at": "2021-10-20T10:40:37.000Z",
+  "in_reply_to_id": null,
+  "in_reply_to_account_id": null,
+  "sensitive": true,
+  "spoiler_text": "introduction post",
+  "visibility": "public",
+  "language": "en",
+  "uri": "http://localhost:8080/users/the_mighty_zork/statuses/01F8MHAMCHF6Y650WCRSCP4WMY",
+  "url": "http://localhost:8080/@the_mighty_zork/statuses/01F8MHAMCHF6Y650WCRSCP4WMY",
+  "replies_count": 2,
+  "reblogs_count": 1,
+  "favourites_count": 1,
+  "favourited": false,
+  "reblogged": false,
+  "muted": false,
+  "bookmarked": false,
+  "pinned": false,
+  "content": "hello everyone!",
+  "reblog": null,
+  "application": {
+    "name": "really cool gts application",
+    "website": "https://reallycool.app"
+  },
+  "account": {
+    "id": "01F8MH1H7YV1Z7D2C8K2730QBF",
+    "username": "the_mighty_zork",
+    "acct": "the_mighty_zork",
+    "display_name": "original zork (he/they)",
+    "locked": false,
+    "discoverable": true,
+    "bot": false,
+    "created_at": "2022-05-20T11:09:18.000Z",
+    "note": "\u003cp\u003ehey yo this is my profile!\u003c/p\u003e",
+    "url": "http://localhost:8080/@the_mighty_zork",
+    "avatar": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/avatar/original/01F8MH58A357CV5K7R7TJMSH6S.jpg",
+    "avatar_static": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/avatar/small/01F8MH58A357CV5K7R7TJMSH6S.jpg",
+    "header": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/header/original/01PFPMWK2FF0D9WMHEJHR07C3Q.jpg",
+    "header_static": "http://localhost:8080/fileserver/01F8MH1H7YV1Z7D2C8K2730QBF/header/small/01PFPMWK2FF0D9WMHEJHR07C3Q.jpg",
+    "followers_count": 2,
+    "following_count": 2,
+    "statuses_count": 5,
+    "last_status_at": "2022-05-20T11:37:55.000Z",
+    "emojis": [],
+    "fields": [],
+    "enable_rss": true,
+    "role": {
+      "name": "user"
+    }
+  },
+  "media_attachments": [],
+  "mentions": [],
+  "tags": [],
+  "emojis": [],
+  "card": null,
+  "poll": null,
+  "text": "hello everyone!"
+}`, unmuted)
+}
+
+func TestStatusMuteTestSuite(t *testing.T) {
+	suite.Run(t, new(StatusMuteTestSuite))
+}

internal/api/client/statuses/statusunmute.go

@@ -0,0 +1,99 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package statuses
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// StatusUnmutePOSTHandler swagger:operation POST /api/v1/statuses/{id}/unmute statusUnmute
+//
+// Unmute a status's thread. This reenables notifications for future replies, likes, boosts etc in the thread of which the target status is a part.
+//
+// Target status must belong to you or mention you.
+//
+// Status thread mutes and unmutes are idempotent. If you already unmuted a thread, unmuting it again just means it stays unmuted and you'll get 200 OK back.
+//
+//	---
+//	tags:
+//	- statuses
+//
+//	produces:
+//	- application/json
+//
+//	parameters:
+//	-
+//		name: id
+//		type: string
+//		description: Target status ID.
+//		in: path
+//		required: true
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- write:mutes
+//
+//	responses:
+//		'200':
+//			name: status
+//			description: The now-unmuted status.
+//			schema:
+//				"$ref": "#/definitions/status"
+//		'400':
+//			description: bad request; you're not part of the target status thread
+//		'401':
+//			description: unauthorized
+//		'403':
+//			description: forbidden
+//		'404':
+//			description: not found
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) StatusUnmutePOSTHandler(c *gin.Context) {
+	authed, err := oauth.Authed(c, true, true, true, true)
+	if err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	targetStatusID, errWithCode := apiutil.ParseID(c.Param(apiutil.IDKey))
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiStatus, errWithCode := m.processor.Status().MuteRemove(c.Request.Context(), authed.Account, targetStatusID)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	c.JSON(http.StatusOK, apiStatus)
+}

internal/cache/cache.go

@@ -248,6 +248,7 @@ func (c *Caches) Sweep(threshold float64) {
 	c.GTS.Status().Trim(threshold)
 	c.GTS.StatusFave().Trim(threshold)
 	c.GTS.Tag().Trim(threshold)
+	c.GTS.ThreadMute().Trim(threshold)
 	c.GTS.Tombstone().Trim(threshold)
 	c.GTS.User().Trim(threshold)
 	c.Visibility.Trim(threshold)

internal/cache/gts.go

@@ -57,6 +57,7 @@ type GTSCaches struct {
 	statusFave       *result.Cache[*gtsmodel.StatusFave]
 	statusFaveIDs    *SliceCache[string]
 	tag              *result.Cache[*gtsmodel.Tag]
+	threadMute       *result.Cache[*gtsmodel.ThreadMute]
 	tombstone        *result.Cache[*gtsmodel.Tombstone]
 	user             *result.Cache[*gtsmodel.User]
 
@@ -93,6 +94,7 @@ func (c *GTSCaches) Init() {
 	c.initStatus()
 	c.initStatusFave()
 	c.initTag()
+	c.initThreadMute()
 	c.initStatusFaveIDs()
 	c.initTombstone()
 	c.initUser()
@@ -249,6 +251,11 @@ func (c *GTSCaches) Tag() *result.Cache[*gtsmodel.Tag] {
 	return c.tag
 }
 
+// ThreadMute provides access to the gtsmodel ThreadMute database cache.
+func (c *GTSCaches) ThreadMute() *result.Cache[*gtsmodel.ThreadMute] {
+	return c.threadMute
+}
+
 // StatusFaveIDs provides access to the status fave IDs list database cache.
 func (c *GTSCaches) StatusFaveIDs() *SliceCache[string] {
 	return c.statusFaveIDs
@@ -712,6 +719,7 @@ func (c *GTSCaches) initStatus() {
 		{Name: "URI"},
 		{Name: "URL"},
 		{Name: "BoostOfID.AccountID"},
+		{Name: "ThreadID", Multi: true},
 	}, func(s1 *gtsmodel.Status) *gtsmodel.Status {
 		s2 := new(gtsmodel.Status)
 		*s2 = *s1
@@ -778,6 +786,28 @@ func (c *GTSCaches) initTag() {
 	c.tag.IgnoreErrors(ignoreErrors)
 }
 
+func (c *GTSCaches) initThreadMute() {
+	cap := calculateResultCacheMax(
+		sizeOfThreadMute(), // model in-mem size.
+		config.GetCacheThreadMuteMemRatio(),
+	)
+
+	log.Infof(nil, "cache size = %d", cap)
+
+	c.threadMute = result.New([]result.Lookup{
+		{Name: "ID"},
+		{Name: "ThreadID", Multi: true},
+		{Name: "AccountID", Multi: true},
+		{Name: "ThreadID.AccountID"},
+	}, func(t1 *gtsmodel.ThreadMute) *gtsmodel.ThreadMute {
+		t2 := new(gtsmodel.ThreadMute)
+		*t2 = *t1
+		return t2
+	}, cap)
+
+	c.threadMute.IgnoreErrors(ignoreErrors)
+}
+
 func (c *GTSCaches) initTombstone() {
 	// Calculate maximum cache size.
 	cap := calculateResultCacheMax(

internal/cache/size.go

@@ -194,6 +194,7 @@ func totalOfRatios() float64 {
 		config.GetCacheStatusFaveMemRatio() +
 		config.GetCacheStatusFaveIDsMemRatio() +
 		config.GetCacheTagMemRatio() +
+		config.GetCacheThreadMuteMemRatio() +
 		config.GetCacheTombstoneMemRatio() +
 		config.GetCacheUserMemRatio() +
 		config.GetCacheWebfingerMemRatio() +
@@ -511,6 +512,16 @@ func sizeofTag() uintptr {
 	}))
 }
 
+func sizeOfThreadMute() uintptr {
+	return uintptr(size.Of(&gtsmodel.ThreadMute{
+		ID:        exampleID,
+		CreatedAt: exampleTime,
+		UpdatedAt: exampleTime,
+		ThreadID:  exampleID,
+		AccountID: exampleID,
+	}))
+}
+
 func sizeofTombstone() uintptr {
 	return uintptr(size.Of(&gtsmodel.Tombstone{
 		ID:        exampleID,

internal/config/config.go

@@ -207,6 +207,7 @@ type CacheConfiguration struct {
 	StatusFaveMemRatio       float64       `name:"status-fave-mem-ratio"`
 	StatusFaveIDsMemRatio    float64       `name:"status-fave-ids-mem-ratio"`
 	TagMemRatio              float64       `name:"tag-mem-ratio"`
+	ThreadMuteMemRatio       float64       `name:"thread-mute-mem-ratio"`
 	TombstoneMemRatio        float64       `name:"tombstone-mem-ratio"`
 	UserMemRatio             float64       `name:"user-mem-ratio"`
 	WebfingerMemRatio        float64       `name:"webfinger-mem-ratio"`

internal/config/defaults.go

@@ -174,6 +174,7 @@
 		StatusFaveMemRatio:       2,
 		StatusFaveIDsMemRatio:    3,
 		TagMemRatio:              2,
+		ThreadMuteMemRatio:       0.2,
 		TombstoneMemRatio:        0.5,
 		UserMemRatio:             0.25,
 		WebfingerMemRatio:        0.1,

internal/config/helpers.gen.go

@@ -3174,6 +3174,31 @@ func GetCacheTagMemRatio() float64 { return global.GetCacheTagMemRatio() }
 // SetCacheTagMemRatio safely sets the value for global configuration 'Cache.TagMemRatio' field
 func SetCacheTagMemRatio(v float64) { global.SetCacheTagMemRatio(v) }
 
+// GetCacheThreadMuteMemRatio safely fetches the Configuration value for state's 'Cache.ThreadMuteMemRatio' field
+func (st *ConfigState) GetCacheThreadMuteMemRatio() (v float64) {
+	st.mutex.RLock()
+	v = st.config.Cache.ThreadMuteMemRatio
+	st.mutex.RUnlock()
+	return
+}
+
+// SetCacheThreadMuteMemRatio safely sets the Configuration value for state's 'Cache.ThreadMuteMemRatio' field
+func (st *ConfigState) SetCacheThreadMuteMemRatio(v float64) {
+	st.mutex.Lock()
+	defer st.mutex.Unlock()
+	st.config.Cache.ThreadMuteMemRatio = v
+	st.reloadToViper()
+}
+
+// CacheThreadMuteMemRatioFlag returns the flag name for the 'Cache.ThreadMuteMemRatio' field
+func CacheThreadMuteMemRatioFlag() string { return "cache-thread-mute-mem-ratio" }
+
+// GetCacheThreadMuteMemRatio safely fetches the value for global configuration 'Cache.ThreadMuteMemRatio' field
+func GetCacheThreadMuteMemRatio() float64 { return global.GetCacheThreadMuteMemRatio() }
+
+// SetCacheThreadMuteMemRatio safely sets the value for global configuration 'Cache.ThreadMuteMemRatio' field
+func SetCacheThreadMuteMemRatio(v float64) { global.SetCacheThreadMuteMemRatio(v) }
+
 // GetCacheTombstoneMemRatio safely fetches the Configuration value for state's 'Cache.TombstoneMemRatio' field
 func (st *ConfigState) GetCacheTombstoneMemRatio() (v float64) {
 	st.mutex.RLock()

internal/db/bundb/basic.go

@@ -135,7 +135,7 @@ func (b *basicDB) CreateAllTables(ctx context.Context) error {
 		&gtsmodel.StatusToEmoji{},
 		&gtsmodel.StatusFave{},
 		&gtsmodel.StatusBookmark{},
-		&gtsmodel.StatusMute{},
+		&gtsmodel.ThreadMute{},
 		&gtsmodel.Tag{},
 		&gtsmodel.User{},
 		&gtsmodel.Emoji{},

internal/db/bundb/bundb.go

@@ -54,6 +54,7 @@
 	&gtsmodel.AccountToEmoji{},
 	&gtsmodel.StatusToEmoji{},
 	&gtsmodel.StatusToTag{},
+	&gtsmodel.ThreadToStatus{},
 }
 
 // DBService satisfies the DB interface
@@ -79,6 +80,7 @@ type DBService struct {
 	db.StatusBookmark
 	db.StatusFave
 	db.Tag
+	db.Thread
 	db.Timeline
 	db.User
 	db.Tombstone
@@ -236,6 +238,10 @@ func NewBunDBService(ctx context.Context, state *state.State) (db.DB, error) {
 			conn:  db,
 			state: state,
 		},
+		Thread: &threadDB{
+			db:    db,
+			state: state,
+		},
 		Timeline: &timelineDB{
 			db:    db,
 			state: state,

internal/db/bundb/bundb_test.go

@@ -53,6 +53,7 @@ type BunDBStandardTestSuite struct {
 	testAccountNotes map[string]*gtsmodel.AccountNote
 	testMarkers      map[string]*gtsmodel.Marker
 	testRules        map[string]*gtsmodel.Rule
+	testThreads      map[string]*gtsmodel.Thread
 }
 
 func (suite *BunDBStandardTestSuite) SetupSuite() {
@@ -75,6 +76,7 @@ func (suite *BunDBStandardTestSuite) SetupSuite() {
 	suite.testAccountNotes = testrig.NewTestAccountNotes()
 	suite.testMarkers = testrig.NewTestMarkers()
 	suite.testRules = testrig.NewTestRules()
+	suite.testThreads = testrig.NewTestThreads()
 }
 
 func (suite *BunDBStandardTestSuite) SetupTest() {

internal/db/bundb/migrations/20231016113235_mute_status_thread.go

@@ -0,0 +1,148 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package migrations
+
+import (
+	"context"
+	"strings"
+
+	gtsmodel "github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/log"
+	"github.com/uptrace/bun"
+	"github.com/uptrace/bun/dialect"
+)
+
+func init() {
+	up := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			// Create thread table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.Thread{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Create thread intermediate table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.ThreadToStatus{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Drop old pkey constraint from
+			// deprecated status mute table.
+			//
+			// This is only necessary with postgres.
+			if tx.Dialect().Name() == dialect.PG {
+				if _, err := tx.ExecContext(
+					ctx,
+					"ALTER TABLE ? DROP CONSTRAINT IF EXISTS ?",
+					bun.Ident("status_mutes"),
+					bun.Safe("status_mutes_pkey"),
+				); err != nil {
+					return err
+				}
+			}
+
+			// Drop old index.
+			if _, err := tx.
+				NewDropIndex().
+				Index("status_mutes_account_id_target_account_id_status_id_idx").
+				IfExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Drop deprecated status mute table.
+			if _, err := tx.
+				NewDropTable().
+				Table("status_mutes").
+				IfExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// Create new thread mute table.
+			if _, err := tx.
+				NewCreateTable().
+				Model(&gtsmodel.ThreadMute{}).
+				IfNotExists().
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			log.Info(ctx, "creating a new index on the statuses table, please wait and don't interrupt it (this may take a few minutes)")
+
+			// Update statuses to add thread ID column.
+			_, err := tx.ExecContext(
+				ctx,
+				"ALTER TABLE ? ADD COLUMN ? CHAR(26)",
+				bun.Ident("statuses"),
+				bun.Ident("thread_id"),
+			)
+			if err != nil && !(strings.Contains(err.Error(), "already exists") ||
+				strings.Contains(err.Error(), "duplicate column name") ||
+				strings.Contains(err.Error(), "SQLSTATE 42701")) {
+				return err
+			}
+
+			// Index new + existing tables properly.
+			for table, indexes := range map[string]map[string][]string{
+				"threads": {
+					"threads_id_idx": {"id"},
+				},
+				"thread_mutes": {
+					"thread_mutes_id_idx": {"id"},
+					// Eg., check if target thread is muted by account.
+					"thread_mutes_thread_id_account_id_idx": {"thread_id", "account_id"},
+				},
+				"statuses": {
+					// Eg., select all statuses in a thread.
+					"statuses_thread_id_idx": {"thread_id"},
+				},
+			} {
+				for index, columns := range indexes {
+					if _, err := tx.
+						NewCreateIndex().
+						Table(table).
+						Index(index).
+						Column(columns...).
+						Exec(ctx); err != nil {
+						return err
+					}
+				}
+			}
+
+			return nil
+		})
+	}
+
+	down := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			return nil
+		})
+	}
+
+	if err := Migrations.Register(up, down); err != nil {
+		panic(err)
+	}
+}

internal/db/bundb/status.go

@@ -324,6 +324,23 @@ func (s *statusDB) PutStatus(ctx context.Context, status *gtsmodel.Status) error
 				}
 			}
 
+			// If the status is threaded, create
+			// link between thread and status.
+			if status.ThreadID != "" {
+				if _, err := tx.
+					NewInsert().
+					Model(&gtsmodel.ThreadToStatus{
+						ThreadID: status.ThreadID,
+						StatusID: status.ID,
+					}).
+					On("CONFLICT (?, ?) DO NOTHING", bun.Ident("thread_id"), bun.Ident("status_id")).
+					Exec(ctx); err != nil {
+					if !errors.Is(err, db.ErrAlreadyExists) {
+						return err
+					}
+				}
+			}
+
 			// Finally, insert the status
 			_, err := tx.NewInsert().Model(status).Exec(ctx)
 			return err
@@ -390,6 +407,23 @@ func (s *statusDB) UpdateStatus(ctx context.Context, status *gtsmodel.Status, co
 				}
 			}
 
+			// If the status is threaded, create
+			// link between thread and status.
+			if status.ThreadID != "" {
+				if _, err := tx.
+					NewInsert().
+					Model(&gtsmodel.ThreadToStatus{
+						ThreadID: status.ThreadID,
+						StatusID: status.ID,
+					}).
+					On("CONFLICT (?, ?) DO NOTHING", bun.Ident("thread_id"), bun.Ident("status_id")).
+					Exec(ctx); err != nil {
+					if !errors.Is(err, db.ErrAlreadyExists) {
+						return err
+					}
+				}
+			}
+
 			// Finally, update the status
 			_, err := tx.
 				NewUpdate().
@@ -439,6 +473,17 @@ func (s *statusDB) DeleteStatusByID(ctx context.Context, id string) error {
 			return err
 		}
 
+		// Delete links between this status
+		// and any threads it was a part of.
+		_, err = tx.
+			NewDelete().
+			TableExpr("? AS ?", bun.Ident("thread_to_statuses"), bun.Ident("thread_to_status")).
+			Where("? = ?", bun.Ident("thread_to_status.status_id"), id).
+			Exec(ctx)
+		if err != nil {
+			return err
+		}
+
 		// delete the status itself
 		if _, err := tx.
 			NewDelete().
@@ -634,16 +679,6 @@ func (s *statusDB) getStatusBoostIDs(ctx context.Context, statusID string) ([]st
 	})
 }
 
-func (s *statusDB) IsStatusMutedBy(ctx context.Context, status *gtsmodel.Status, accountID string) (bool, error) {
-	q := s.db.
-		NewSelect().
-		TableExpr("? AS ?", bun.Ident("status_mutes"), bun.Ident("status_mute")).
-		Where("? = ?", bun.Ident("status_mute.status_id"), status.ID).
-		Where("? = ?", bun.Ident("status_mute.account_id"), accountID)
-
-	return s.db.Exists(ctx, q)
-}
-
 func (s *statusDB) IsStatusBookmarkedBy(ctx context.Context, status *gtsmodel.Status, accountID string) (bool, error) {
 	q := s.db.
 		NewSelect().

internal/db/bundb/thread.go

@@ -0,0 +1,117 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package bundb
+
+import (
+	"context"
+	"errors"
+
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/state"
+	"github.com/uptrace/bun"
+)
+
+type threadDB struct {
+	db    *DB
+	state *state.State
+}
+
+func (t *threadDB) PutThread(ctx context.Context, thread *gtsmodel.Thread) error {
+	_, err := t.db.
+		NewInsert().
+		Model(thread).
+		Exec(ctx)
+
+	return err
+}
+
+func (t *threadDB) GetThreadMute(ctx context.Context, id string) (*gtsmodel.ThreadMute, error) {
+	return t.state.Caches.GTS.ThreadMute().Load("ID", func() (*gtsmodel.ThreadMute, error) {
+		var threadMute gtsmodel.ThreadMute
+
+		q := t.db.
+			NewSelect().
+			Model(&threadMute).
+			Where("? = ?", bun.Ident("thread_mute.id"), id)
+
+		if err := q.Scan(ctx); err != nil {
+			return nil, err
+		}
+
+		return &threadMute, nil
+	}, id)
+}
+
+func (t *threadDB) GetThreadMutedByAccount(
+	ctx context.Context,
+	threadID string,
+	accountID string,
+) (*gtsmodel.ThreadMute, error) {
+	return t.state.Caches.GTS.ThreadMute().Load("ThreadID.AccountID", func() (*gtsmodel.ThreadMute, error) {
+		var threadMute gtsmodel.ThreadMute
+
+		q := t.db.
+			NewSelect().
+			Model(&threadMute).
+			Where("? = ?", bun.Ident("thread_mute.thread_id"), threadID).
+			Where("? = ?", bun.Ident("thread_mute.account_id"), accountID)
+
+		if err := q.Scan(ctx); err != nil {
+			return nil, err
+		}
+
+		return &threadMute, nil
+	}, threadID, accountID)
+}
+
+func (t *threadDB) IsThreadMutedByAccount(
+	ctx context.Context,
+	threadID string,
+	accountID string,
+) (bool, error) {
+	if threadID == "" {
+		return false, nil
+	}
+
+	mute, err := t.GetThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		return false, err
+	}
+
+	return (mute != nil), nil
+}
+
+func (t *threadDB) PutThreadMute(ctx context.Context, threadMute *gtsmodel.ThreadMute) error {
+	return t.state.Caches.GTS.ThreadMute().Store(threadMute, func() error {
+		_, err := t.db.NewInsert().Model(threadMute).Exec(ctx)
+		return err
+	})
+}
+
+func (t *threadDB) DeleteThreadMute(ctx context.Context, id string) error {
+	if _, err := t.db.
+		NewDelete().
+		TableExpr("? AS ?", bun.Ident("thread_mutes"), bun.Ident("thread_mute")).
+		Where("? = ?", bun.Ident("thread_mute.id"), id).Exec(ctx); err != nil {
+		return err
+	}
+
+	t.state.Caches.GTS.ThreadMute().Invalidate("ID", id)
+	return nil
+}

internal/db/bundb/thread_test.go

@@ -0,0 +1,91 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package bundb_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+type ThreadTestSuite struct {
+	BunDBStandardTestSuite
+}
+
+func (suite *ThreadTestSuite) TestPutThread() {
+	suite.NoError(
+		suite.db.PutThread(
+			context.Background(),
+			&gtsmodel.Thread{
+				ID: "01HCWK4HVQ4VGSS1G4VQP3AXZF",
+			},
+		),
+	)
+}
+
+func (suite *ThreadTestSuite) TestMuteUnmuteThread() {
+	var (
+		threadID   = suite.testThreads["local_account_1_status_1"].ID
+		accountID  = suite.testAccounts["local_account_1"].ID
+		ctx        = context.Background()
+		threadMute = &gtsmodel.ThreadMute{
+			ID:        "01HD3K14B62YJHH4RR0DSZ1EQ2",
+			ThreadID:  threadID,
+			AccountID: accountID,
+		}
+	)
+
+	// Mute the thread and ensure it's actually muted.
+	if err := suite.db.PutThreadMute(ctx, threadMute); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	muted, err := suite.db.IsThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	if !muted {
+		suite.FailNow("", "expected thread %s to be muted by account %s", threadID, accountID)
+	}
+
+	_, err = suite.db.GetThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Unmute the thread and ensure it's actually unmuted.
+	if err := suite.db.DeleteThreadMute(ctx, threadMute.ID); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	muted, err = suite.db.IsThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	if muted {
+		suite.FailNow("", "expected thread %s to not be muted by account %s", threadID, accountID)
+	}
+}
+
+func TestThreadTestSuite(t *testing.T) {
+	suite.Run(t, new(ThreadTestSuite))
+}

internal/db/db.go

@@ -45,6 +45,7 @@ type DB interface {
 	StatusBookmark
 	StatusFave
 	Tag
+	Thread
 	Timeline
 	User
 	Tombstone

internal/db/status.go

@@ -80,9 +80,6 @@ type Status interface {
 	// If onlyDirect is true, only the immediate children will be returned.
 	GetStatusChildren(ctx context.Context, status *gtsmodel.Status, onlyDirect bool, minID string) ([]*gtsmodel.Status, error)
 
-	// IsStatusMutedBy checks if a given status has been muted by a given account ID
-	IsStatusMutedBy(ctx context.Context, status *gtsmodel.Status, accountID string) (bool, error)
-
 	// IsStatusBookmarkedBy checks if a given status has been bookmarked by a given account ID
 	IsStatusBookmarkedBy(ctx context.Context, status *gtsmodel.Status, accountID string) (bool, error)
 }

internal/db/thread.go

@@ -0,0 +1,48 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package db
+
+import (
+	"context"
+
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+// Thread contains functions for getting/creating
+// status threads and thread mutes in the database.
+type Thread interface {
+	// PutThread inserts a new thread.
+	PutThread(ctx context.Context, thread *gtsmodel.Thread) error
+
+	// GetThreadMute gets a single threadMute by its ID.
+	GetThreadMute(ctx context.Context, id string) (*gtsmodel.ThreadMute, error)
+
+	// GetThreadMutedByAccount gets a threadMute targeting the
+	// given thread, created by the given accountID, if it exists.
+	GetThreadMutedByAccount(ctx context.Context, threadID string, accountID string) (*gtsmodel.ThreadMute, error)
+
+	// IsThreadMutedByAccount returns true if threadID is muted
+	// by given account. Empty thread ID will return false early.
+	IsThreadMutedByAccount(ctx context.Context, threadID string, accountID string) (bool, error)
+
+	// PutThreadMute inserts a new threadMute.
+	PutThreadMute(ctx context.Context, threadMute *gtsmodel.ThreadMute) error
+
+	// DeleteThreadMute deletes threadMute with the given ID.
+	DeleteThreadMute(ctx context.Context, id string) error
+}

internal/federation/dereferencing/status.go

@@ -24,6 +24,8 @@
 	"net/url"
 	"time"
 
+	"slices"
+
 	"github.com/superseriousbusiness/gotosocial/internal/ap"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -293,6 +295,12 @@ func (d *Dereferencer) enrichStatus(
 		return nil, nil, gtserror.Newf("error populating mentions for status %s: %w", uri, err)
 	}
 
+	// Now that we know who this status replies to (handled by ASStatusToStatus)
+	// and who it mentions, we can add a ThreadID to it if necessary.
+	if err := d.threadStatus(ctx, latestStatus); err != nil {
+		return nil, nil, gtserror.Newf("error checking / creating threadID for status %s: %w", uri, err)
+	}
+
 	// Ensure the status' tags are populated, (changes are expected / okay).
 	if err := d.fetchStatusTags(ctx, latestStatus); err != nil {
 		return nil, nil, gtserror.Newf("error populating tags for status %s: %w", uri, err)
@@ -410,6 +418,57 @@ func (d *Dereferencer) fetchStatusMentions(ctx context.Context, requestUser stri
 	return nil
 }
 
+func (d *Dereferencer) threadStatus(ctx context.Context, status *gtsmodel.Status) error {
+	if status.InReplyTo != nil {
+		if parentThreadID := status.InReplyTo.ThreadID; parentThreadID != "" {
+			// Simplest case: parent status
+			// is threaded, so inherit threadID.
+			status.ThreadID = parentThreadID
+			return nil
+		}
+	}
+
+	// Parent wasn't threaded. If this
+	// status mentions a local account,
+	// we should thread it so that local
+	// account can mute it if they want.
+	mentionsLocal := slices.ContainsFunc(
+		status.Mentions,
+		func(m *gtsmodel.Mention) bool {
+			// If TargetAccount couldn't
+			// be deref'd, we know it's not
+			// a local account, so only
+			// check for non-nil accounts.
+			return m.TargetAccount != nil &&
+				m.TargetAccount.IsLocal()
+		},
+	)
+
+	if !mentionsLocal {
+		// Status doesn't mention a
+		// local account, so we don't
+		// need to thread it.
+		return nil
+	}
+
+	// Status mentions a local account.
+	// Create a new thread and assign
+	// it to the status.
+	threadID := id.NewULID()
+
+	if err := d.state.DB.PutThread(
+		ctx,
+		&gtsmodel.Thread{
+			ID: threadID,
+		},
+	); err != nil {
+		return gtserror.Newf("error inserting new thread in db: %w", err)
+	}
+
+	status.ThreadID = threadID
+	return nil
+}
+
 func (d *Dereferencer) fetchStatusTags(ctx context.Context, status *gtsmodel.Status) error {
 	// Allocate new slice to take the yet-to-be determined tag IDs.
 	status.TagIDs = make([]string, len(status.Tags))

internal/gtsmodel/status.go

@@ -20,6 +20,8 @@
 import (
 	"time"
 
+	"slices"
+
 	"github.com/superseriousbusiness/gotosocial/internal/log"
 )
 
@@ -54,6 +56,7 @@ type Status struct {
 	BoostOfAccountID         string             `bun:"type:CHAR(26),nullzero"`                                      // id of the account that owns the boosted status
 	BoostOf                  *Status            `bun:"-"`                                                           // status that corresponds to boostOfID
 	BoostOfAccount           *Account           `bun:"rel:belongs-to"`                                              // account that corresponds to boostOfAccountID
+	ThreadID                 string             `bun:"type:CHAR(26),nullzero"`                                      // id of the thread to which this status belongs; only set for remote statuses if a local account is involved at some point in the thread, otherwise null
 	ContentWarning           string             `bun:",nullzero"`                                                   // cw string for this status
 	Visibility               Visibility         `bun:",nullzero,notnull"`                                           // visibility entry for this status
 	Sensitive                *bool              `bun:",nullzero,notnull,default:false"`                             // mark the status as sensitive?
@@ -241,13 +244,15 @@ func (s *Status) EmojisUpToDate(other *Status) bool {
 }
 
 // MentionsAccount returns whether status mentions the given account ID.
-func (s *Status) MentionsAccount(id string) bool {
-	for _, mention := range s.Mentions {
-		if mention.TargetAccountID == id {
-			return true
+func (s *Status) MentionsAccount(accountID string) bool {
+	return slices.ContainsFunc(s.Mentions, func(m *Mention) bool {
+		return m.TargetAccountID == accountID
+	})
 }
-	}
-	return false
+
+// BelongsToAccount returns whether status belongs to the given account ID.
+func (s *Status) BelongsToAccount(accountID string) bool {
+	return s.AccountID == accountID
 }
 
 // StatusToTag is an intermediate struct to facilitate the many2many relationship between a status and one or more tags.

internal/gtsmodel/statusmute.go

@@ -19,7 +19,7 @@
 
 import "time"
 
-// StatusMute refers to one account having muted the status of another account or its own.
+// StatusMute IS DEPRECATED -- USE THREADMUTE INSTEAD NOW! THIS TABLE DOESN'T EXIST ANYMORE!
 type StatusMute struct {
 	ID              string    `bun:"type:CHAR(26),pk,nullzero,notnull,unique"`                    // id of this item in the database
 	CreatedAt       time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"` // when was item created

internal/gtsmodel/thread.go

@@ -0,0 +1,32 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package gtsmodel
+
+// Thread represents one thread of statuses.
+// TODO: add more fields here if necessary.
+type Thread struct {
+	ID        string   `bun:"type:CHAR(26),pk,nullzero,notnull,unique"` // id of this item in the database
+	StatusIDs []string `bun:"-"`                                        // ids of statuses belonging to this thread (order not guaranteed)
+}
+
+// ThreadToStatus is an intermediate struct to facilitate the
+// many2many relationship between a thread and one or more statuses.
+type ThreadToStatus struct {
+	ThreadID string `bun:"type:CHAR(26),unique:statusthread,nullzero,notnull"`
+	StatusID string `bun:"type:CHAR(26),unique:statusthread,nullzero,notnull"`
+}

internal/gtsmodel/threadmute.go

@@ -0,0 +1,29 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package gtsmodel
+
+import "time"
+
+// ThreadMute represents an account-level mute of a thread of statuses.
+type ThreadMute struct {
+	ID        string    `bun:"type:CHAR(26),pk,nullzero,notnull,unique"`                               // id of this item in the database
+	CreatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"`            // when was item created
+	UpdatedAt time.Time `bun:"type:timestamptz,nullzero,notnull,default:current_timestamp"`            // when was item last updated
+	ThreadID  string    `bun:"type:CHAR(26),nullzero,notnull,unique:thread_mute_thread_id_account_id"` // ID of the muted thread
+	AccountID string    `bun:"type:CHAR(26),nullzero,notnull,unique:thread_mute_thread_id_account_id"` // Account ID of the creator of this mute
+}

internal/processing/processor.go

@@ -164,7 +164,7 @@ func NewProcessor(
 	processor.report = report.New(state, converter)
 	processor.timeline = timeline.New(state, converter, filter)
 	processor.search = search.New(state, federator, converter, filter)
-	processor.status = status.New(state, federator, converter, filter, parseMentionFunc)
+	processor.status = status.New(&commonProcessor, state, federator, converter, filter, parseMentionFunc)
 	processor.stream = streamProcessor
 	processor.user = user.New(state, emailSender)
 

internal/processing/status/bookmark.go

@@ -29,16 +29,31 @@
 	"github.com/superseriousbusiness/gotosocial/internal/id"
 )
 
+func (p *Processor) getBookmarkableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, string, gtserror.WithCode) {
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, "", errWithCode
+	}
+
+	bookmarkID, err := p.state.DB.GetStatusBookmarkID(ctx, requestingAccount.ID, targetStatus.ID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = fmt.Errorf("getBookmarkTarget: error checking existing bookmark: %w", err)
+		return nil, "", gtserror.NewErrorInternalError(err)
+	}
+
+	return targetStatus, bookmarkID, nil
+}
+
 // BookmarkCreate adds a bookmark for the requestingAccount, targeting the given status (no-op if bookmark already exists).
 func (p *Processor) BookmarkCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingBookmarkID != "" {
 		// Status is already bookmarked.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// Create and store a new bookmark.
@@ -57,24 +72,24 @@ func (p *Processor) BookmarkCreate(ctx context.Context, requestingAccount *gtsmo
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // BookmarkRemove removes a bookmark for the requesting account, targeting the given status (no-op if bookmark doesn't exist).
 func (p *Processor) BookmarkRemove(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingBookmarkID, errWithCode := p.getBookmarkableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingBookmarkID == "" {
 		// Status isn't bookmarked.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// We have a bookmark to remove.
@@ -83,25 +98,10 @@ func (p *Processor) BookmarkRemove(ctx context.Context, requestingAccount *gtsmo
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
-}
-
-func (p *Processor) getBookmarkTarget(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, string, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
-	if errWithCode != nil {
-		return nil, "", errWithCode
-	}
-
-	bookmarkID, err := p.state.DB.GetStatusBookmarkID(ctx, requestingAccount.ID, targetStatus.ID)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		err = fmt.Errorf("getBookmarkTarget: error checking existing bookmark: %w", err)
-		return nil, "", gtserror.NewErrorInternalError(err)
-	}
-
-	return targetStatus, bookmarkID, nil
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }

internal/processing/status/boost.go

@@ -85,7 +85,7 @@ func (p *Processor) BoostCreate(ctx context.Context, requestingAccount *gtsmodel
 		TargetAccount:  targetStatus.Account,
 	})
 
-	return p.apiStatus(ctx, boostWrapperStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, boostWrapperStatus)
 }
 
 // BoostRemove processes the unboost/unreblog of a given status, returning the status if all is well.
@@ -129,7 +129,7 @@ func (p *Processor) BoostRemove(ctx context.Context, requestingAccount *gtsmodel
 		})
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // StatusBoostedBy returns a slice of accounts that have boosted the given status, filtered according to privacy settings.

internal/processing/status/common.go

@@ -1,103 +0,0 @@
-// GoToSocial
-// Copyright (C) GoToSocial Authors admin@gotosocial.org
-// SPDX-License-Identifier: AGPL-3.0-or-later
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-package status
-
-import (
-	"context"
-	"fmt"
-
-	"codeberg.org/gruf/go-kv"
-	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
-	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
-	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
-	"github.com/superseriousbusiness/gotosocial/internal/log"
-)
-
-func (p *Processor) apiStatus(ctx context.Context, targetStatus *gtsmodel.Status, requestingAccount *gtsmodel.Account) (*apimodel.Status, gtserror.WithCode) {
-	apiStatus, err := p.converter.StatusToAPIStatus(ctx, targetStatus, requestingAccount)
-	if err != nil {
-		err = gtserror.Newf("error converting status %s to frontend representation: %w", targetStatus.ID, err)
-		return nil, gtserror.NewErrorInternalError(err)
-	}
-
-	return apiStatus, nil
-}
-
-func (p *Processor) getVisibleStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, gtserror.WithCode) {
-	targetStatus, err := p.state.DB.GetStatusByID(ctx, targetStatusID)
-	if err != nil {
-		err = fmt.Errorf("getVisibleStatus: db error fetching status %s: %w", targetStatusID, err)
-		return nil, gtserror.NewErrorNotFound(err)
-	}
-
-	if requestingAccount != nil {
-		// Ensure the status is up-to-date.
-		p.federator.RefreshStatusAsync(ctx,
-			requestingAccount.Username,
-			targetStatus,
-			nil,
-			false,
-		)
-	}
-
-	visible, err := p.filter.StatusVisible(ctx, requestingAccount, targetStatus)
-	if err != nil {
-		err = fmt.Errorf("getVisibleStatus: error seeing if status %s is visible: %w", targetStatus.ID, err)
-		return nil, gtserror.NewErrorNotFound(err)
-	}
-
-	if !visible {
-		err = fmt.Errorf("getVisibleStatus: status %s is not visible to requesting account", targetStatusID)
-		return nil, gtserror.NewErrorNotFound(err)
-	}
-
-	return targetStatus, nil
-}
-
-// invalidateStatus is a shortcut function for invalidating the prepared/cached
-// representation one status in the home timeline and all list timelines of the
-// given accountID. It should only be called in cases where a status update
-// does *not* need to be passed into the processor via the worker queue, since
-// such invalidation will, in that case, be handled by the processor instead.
-func (p *Processor) invalidateStatus(ctx context.Context, accountID string, statusID string) error {
-	// Get lists first + bail if this fails.
-	lists, err := p.state.DB.GetListsForAccountID(ctx, accountID)
-	if err != nil {
-		return gtserror.Newf("db error getting lists for account %s: %w", accountID, err)
-	}
-
-	l := log.WithContext(ctx).WithFields(kv.Fields{
-		{"accountID", accountID},
-		{"statusID", statusID},
-	}...)
-
-	// Unprepare item from home + list timelines, just log
-	// if something goes wrong since this is not a showstopper.
-
-	if err := p.state.Timelines.Home.UnprepareItem(ctx, accountID, statusID); err != nil {
-		l.Errorf("error unpreparing item from home timeline: %v", err)
-	}
-
-	for _, list := range lists {
-		if err := p.state.Timelines.List.UnprepareItem(ctx, list.ID, statusID); err != nil {
-			l.Errorf("error unpreparing item from list timeline %s: %v", list.ID, err)
-		}
-	}
-
-	return nil
-}

internal/processing/status/create.go

@@ -70,6 +70,10 @@ func (p *Processor) Create(ctx context.Context, requestingAccount *gtsmodel.Acco
 		return nil, errWithCode
 	}
 
+	if errWithCode := p.processThreadID(ctx, status); errWithCode != nil {
+		return nil, errWithCode
+	}
+
 	if errWithCode := p.processMediaIDs(ctx, form, requestingAccount.ID, status); errWithCode != nil {
 		return nil, errWithCode
 	}
@@ -99,7 +103,7 @@ func (p *Processor) Create(ctx context.Context, requestingAccount *gtsmodel.Acco
 		OriginAccount:  requestingAccount,
 	})
 
-	return p.apiStatus(ctx, status, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, status)
 }
 
 func (p *Processor) processReplyToID(ctx context.Context, form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) gtserror.WithCode {
@@ -141,12 +145,43 @@ func (p *Processor) processReplyToID(ctx context.Context, form *apimodel.Advance
 
 	// Set status fields from inReplyTo.
 	status.InReplyToID = inReplyTo.ID
+	status.InReplyTo = inReplyTo
 	status.InReplyToURI = inReplyTo.URI
 	status.InReplyToAccountID = inReplyTo.AccountID
 
 	return nil
 }
 
+func (p *Processor) processThreadID(ctx context.Context, status *gtsmodel.Status) gtserror.WithCode {
+	// Status takes the thread ID
+	// of whatever it replies to.
+	if status.InReplyTo != nil {
+		status.ThreadID = status.InReplyTo.ThreadID
+		return nil
+	}
+
+	// Status doesn't reply to anything,
+	// so it's a new local top-level status
+	// and therefore needs a thread ID.
+	threadID := id.NewULID()
+
+	if err := p.state.DB.PutThread(
+		ctx,
+		&gtsmodel.Thread{
+			ID: threadID,
+		},
+	); err != nil {
+		err := gtserror.Newf("error inserting new thread in db: %w", err)
+		return gtserror.NewErrorInternalError(err)
+	}
+
+	// Future replies to this status
+	// (if any) will inherit this thread ID.
+	status.ThreadID = threadID
+
+	return nil
+}
+
 func (p *Processor) processMediaIDs(ctx context.Context, form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) gtserror.WithCode {
 	if form.MediaIDs == nil {
 		return nil

internal/processing/status/delete.go

@@ -45,7 +45,7 @@ func (p *Processor) Delete(ctx context.Context, requestingAccount *gtsmodel.Acco
 	}
 
 	// Parse the status to API model BEFORE deleting it.
-	apiStatus, errWithCode := p.apiStatus(ctx, targetStatus, requestingAccount)
+	apiStatus, errWithCode := p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}

internal/processing/status/fave.go

@@ -33,16 +33,36 @@
 	"github.com/superseriousbusiness/gotosocial/internal/uris"
 )
 
+func (p *Processor) getFaveableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, *gtsmodel.StatusFave, gtserror.WithCode) {
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, nil, errWithCode
+	}
+
+	if !*targetStatus.Likeable {
+		err := errors.New("status is not faveable")
+		return nil, nil, gtserror.NewErrorForbidden(err, err.Error())
+	}
+
+	fave, err := p.state.DB.GetStatusFave(ctx, requestingAccount.ID, targetStatusID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = fmt.Errorf("getFaveTarget: error checking existing fave: %w", err)
+		return nil, nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return targetStatus, fave, nil
+}
+
 // FaveCreate adds a fave for the requestingAccount, targeting the given status (no-op if fave already exists).
 func (p *Processor) FaveCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingFave, errWithCode := p.getFaveTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingFave, errWithCode := p.getFaveableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingFave != nil {
 		// Status is already faveed.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// Create and store a new fave
@@ -72,19 +92,19 @@ func (p *Processor) FaveCreate(ctx context.Context, requestingAccount *gtsmodel.
 		TargetAccount:  targetStatus.Account,
 	})
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // FaveRemove removes a fave for the requesting account, targeting the given status (no-op if fave doesn't exist).
 func (p *Processor) FaveRemove(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, existingFave, errWithCode := p.getFaveTarget(ctx, requestingAccount, targetStatusID)
+	targetStatus, existingFave, errWithCode := p.getFaveableStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
 	if existingFave == nil {
 		// Status isn't faveed.
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	// We have a fave to remove.
@@ -102,12 +122,12 @@ func (p *Processor) FaveRemove(ctx context.Context, requestingAccount *gtsmodel.
 		TargetAccount:  targetStatus.Account,
 	})
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // FavedBy returns a slice of accounts that have liked the given status, filtered according to privacy settings.
 func (p *Processor) FavedBy(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) ([]*apimodel.Account, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
@@ -145,23 +165,3 @@ func (p *Processor) FavedBy(ctx context.Context, requestingAccount *gtsmodel.Acc
 
 	return apiAccounts, nil
 }
-
-func (p *Processor) getFaveTarget(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, *gtsmodel.StatusFave, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
-	if errWithCode != nil {
-		return nil, nil, errWithCode
-	}
-
-	if !*targetStatus.Likeable {
-		err := errors.New("status is not faveable")
-		return nil, nil, gtserror.NewErrorForbidden(err, err.Error())
-	}
-
-	fave, err := p.state.DB.GetStatusFave(ctx, requestingAccount.ID, targetStatusID)
-	if err != nil && !errors.Is(err, db.ErrNoEntries) {
-		err = fmt.Errorf("getFaveTarget: error checking existing fave: %w", err)
-		return nil, nil, gtserror.NewErrorInternalError(err)
-	}
-
-	return targetStatus, fave, nil
-}

internal/processing/status/get.go

@@ -28,17 +28,17 @@
 
 // Get gets the given status, taking account of privacy settings and blocks etc.
 func (p *Processor) Get(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // ContextGet returns the context (previous and following posts) from the given status ID.
 func (p *Processor) ContextGet(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Context, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}

internal/processing/status/mute.go

@@ -0,0 +1,146 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package status
+
+import (
+	"context"
+	"errors"
+
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/id"
+)
+
+// getMuteableStatus fetches targetStatusID status and
+// ensures that requestingAccount can mute or unmute it.
+//
+// It checks:
+//   - Status exists and is visible to requester.
+//   - Status belongs to or mentions requesting account.
+//   - Status is not a boost.
+//   - Status has a thread ID.
+func (p *Processor) getMuteableStatus(
+	ctx context.Context,
+	requestingAccount *gtsmodel.Account,
+	targetStatusID string,
+) (*gtsmodel.Status, gtserror.WithCode) {
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, errWithCode
+	}
+
+	if !targetStatus.BelongsToAccount(requestingAccount.ID) &&
+		!targetStatus.MentionsAccount(requestingAccount.ID) {
+		err := gtserror.Newf("status %s does not belong to or mention account %s", targetStatusID, requestingAccount.ID)
+		return nil, gtserror.NewErrorNotFound(err)
+	}
+
+	if targetStatus.BoostOfID != "" {
+		err := gtserror.New("cannot mute or unmute boosts")
+		return nil, gtserror.NewErrorBadRequest(err, err.Error())
+	}
+
+	if targetStatus.ThreadID == "" {
+		err := gtserror.New("cannot mute or unmute status with no threadID")
+		return nil, gtserror.NewErrorBadRequest(err, err.Error())
+	}
+
+	return targetStatus, nil
+}
+
+func (p *Processor) MuteCreate(
+	ctx context.Context,
+	requestingAccount *gtsmodel.Account,
+	targetStatusID string,
+) (*apimodel.Status, gtserror.WithCode) {
+	targetStatus, errWithCode := p.getMuteableStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, errWithCode
+	}
+
+	var (
+		threadID  = targetStatus.ThreadID
+		accountID = requestingAccount.ID
+	)
+
+	// Check if mute already exists for this thread ID.
+	threadMute, err := p.state.DB.GetThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		// Real db error.
+		err := gtserror.Newf("db error fetching mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	if threadMute != nil {
+		// Thread mute already exists.
+		// Our job here is done ("but you didn't do anything!").
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+	}
+
+	// Gotta create a mute.
+	if err := p.state.DB.PutThreadMute(ctx, &gtsmodel.ThreadMute{
+		ID:        id.NewULID(),
+		ThreadID:  threadID,
+		AccountID: accountID,
+	}); err != nil {
+		err := gtserror.Newf("db error putting mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+}
+
+func (p *Processor) MuteRemove(
+	ctx context.Context,
+	requestingAccount *gtsmodel.Account,
+	targetStatusID string,
+) (*apimodel.Status, gtserror.WithCode) {
+	targetStatus, errWithCode := p.getMuteableStatus(ctx, requestingAccount, targetStatusID)
+	if errWithCode != nil {
+		return nil, errWithCode
+	}
+
+	var (
+		threadID  = targetStatus.ThreadID
+		accountID = requestingAccount.ID
+	)
+
+	// Check if mute exists for this thread ID.
+	threadMute, err := p.state.DB.GetThreadMutedByAccount(ctx, threadID, accountID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		// Real db error.
+		err := gtserror.Newf("db error fetching mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	if threadMute == nil {
+		// Thread mute doesn't exist.
+		// Our job here is done ("but you didn't do anything!").
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+	}
+
+	// Gotta remove the mute.
+	if err := p.state.DB.DeleteThreadMute(ctx, threadMute.ID); err != nil {
+		err := gtserror.Newf("db error deleting mute of thread %s for account %s", threadID, accountID)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
+}

internal/processing/status/pin.go

@@ -39,7 +39,7 @@
 //   - Status is public, unlisted, or followers-only.
 //   - Status is not a boost.
 func (p *Processor) getPinnableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, gtserror.WithCode) {
-	targetStatus, errWithCode := p.getVisibleStatus(ctx, requestingAccount, targetStatusID)
+	targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx, requestingAccount, targetStatusID)
 	if errWithCode != nil {
 		return nil, errWithCode
 	}
@@ -99,12 +99,12 @@ func (p *Processor) PinCreate(ctx context.Context, requestingAccount *gtsmodel.A
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }
 
 // PinRemove unpins the target status from the top of requestingAccount's profile, if possible.
@@ -125,7 +125,7 @@ func (p *Processor) PinRemove(ctx context.Context, requestingAccount *gtsmodel.A
 	}
 
 	if targetStatus.PinnedAt.IsZero() {
-		return p.apiStatus(ctx, targetStatus, requestingAccount)
+		return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 	}
 
 	targetStatus.PinnedAt = time.Time{}
@@ -134,10 +134,10 @@ func (p *Processor) PinRemove(ctx context.Context, requestingAccount *gtsmodel.A
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	if err := p.invalidateStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
+	if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
 		err = gtserror.Newf("error invalidating status from timelines: %w", err)
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
-	return p.apiStatus(ctx, targetStatus, requestingAccount)
+	return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
 }

internal/processing/status/status.go

@@ -20,6 +20,7 @@
 import (
 	"github.com/superseriousbusiness/gotosocial/internal/federation"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/processing/common"
 	"github.com/superseriousbusiness/gotosocial/internal/state"
 	"github.com/superseriousbusiness/gotosocial/internal/text"
 	"github.com/superseriousbusiness/gotosocial/internal/typeutils"
@@ -27,6 +28,9 @@
 )
 
 type Processor struct {
+	// common processor logic
+	c *common.Processor
+
 	state        *state.State
 	federator    *federation.Federator
 	converter    *typeutils.Converter
@@ -36,8 +40,16 @@ type Processor struct {
 }
 
 // New returns a new status processor.
-func New(state *state.State, federator *federation.Federator, converter *typeutils.Converter, filter *visibility.Filter, parseMention gtsmodel.ParseMentionFunc) Processor {
+func New(
+	common *common.Processor,
+	state *state.State,
+	federator *federation.Federator,
+	converter *typeutils.Converter,
+	filter *visibility.Filter,
+	parseMention gtsmodel.ParseMentionFunc,
+) Processor {
 	return Processor{
+		c:            common,
 		state:        state,
 		federator:    federator,
 		converter:    converter,

internal/processing/status/status_test.go

@@ -24,6 +24,7 @@
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/media"
 	"github.com/superseriousbusiness/gotosocial/internal/processing"
+	"github.com/superseriousbusiness/gotosocial/internal/processing/common"
 	"github.com/superseriousbusiness/gotosocial/internal/processing/status"
 	"github.com/superseriousbusiness/gotosocial/internal/state"
 	"github.com/superseriousbusiness/gotosocial/internal/storage"
@@ -94,7 +95,9 @@ func (suite *StatusStandardTestSuite) SetupTest() {
 		suite.typeConverter,
 	)
 
-	suite.status = status.New(&suite.state, suite.federator, suite.typeConverter, filter, processing.GetParseMentionFunc(suite.db, suite.federator))
+	common := common.New(&suite.state, suite.typeConverter, suite.federator, filter)
+
+	suite.status = status.New(&common, &suite.state, suite.federator, suite.typeConverter, filter, processing.GetParseMentionFunc(suite.db, suite.federator))
 
 	testrig.StandardDBSetup(suite.db, suite.testAccounts)
 	testrig.StandardStorageSetup(suite.storage, "../../../testrig/media")

internal/processing/workers/fromclientapi.go

@@ -260,6 +260,11 @@ func (p *clientAPI) CreateLike(ctx context.Context, cMsg messages.FromClientAPI)
 		return gtserror.Newf("%T not parseable as *gtsmodel.StatusFave", cMsg.GTSModel)
 	}
 
+	// Ensure fave populated.
+	if err := p.state.DB.PopulateStatusFave(ctx, fave); err != nil {
+		return gtserror.Newf("error populating status fave: %w", err)
+	}
+
 	if err := p.surface.notifyFave(ctx, fave); err != nil {
 		return gtserror.Newf("error notifying fave: %w", err)
 	}

internal/processing/workers/fromclientapi_test.go

@@ -75,6 +75,7 @@ func (suite *FromClientAPITestSuite) newStatus(
 		newStatus.InReplyToAccountID = replyToStatus.AccountID
 		newStatus.InReplyToID = replyToStatus.ID
 		newStatus.InReplyToURI = replyToStatus.URI
+		newStatus.ThreadID = replyToStatus.ThreadID
 
 		// Mention the replied-to account.
 		mention := &gtsmodel.Mention{
@@ -324,6 +325,114 @@ func (suite *FromClientAPITestSuite) TestProcessCreateStatusReply() {
 	)
 }
 
+func (suite *FromClientAPITestSuite) TestProcessCreateStatusReplyMuted() {
+	var (
+		ctx              = context.Background()
+		postingAccount   = suite.testAccounts["admin_account"]
+		receivingAccount = suite.testAccounts["local_account_1"]
+
+		// Admin account posts a reply to zork.
+		// Normally zork would get a notification
+		// for this, but zork mutes this thread.
+		status = suite.newStatus(
+			ctx,
+			postingAccount,
+			gtsmodel.VisibilityPublic,
+			suite.testStatuses["local_account_1_status_1"],
+			nil,
+		)
+		threadMute = &gtsmodel.ThreadMute{
+			ID:        "01HD3KRMBB1M85QRWHD912QWRE",
+			ThreadID:  suite.testStatuses["local_account_1_status_1"].ThreadID,
+			AccountID: receivingAccount.ID,
+		}
+	)
+
+	// Store the thread mute before processing new status.
+	if err := suite.db.PutThreadMute(ctx, threadMute); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Process the new status.
+	if err := suite.processor.Workers().ProcessFromClientAPI(
+		ctx,
+		messages.FromClientAPI{
+			APObjectType:   ap.ObjectNote,
+			APActivityType: ap.ActivityCreate,
+			GTSModel:       status,
+			OriginAccount:  postingAccount,
+		},
+	); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Ensure no notification received.
+	notif, err := suite.db.GetNotification(
+		ctx,
+		gtsmodel.NotificationMention,
+		receivingAccount.ID,
+		postingAccount.ID,
+		status.ID,
+	)
+
+	suite.ErrorIs(err, db.ErrNoEntries)
+	suite.Nil(notif)
+}
+
+func (suite *FromClientAPITestSuite) TestProcessCreateStatusBoostMuted() {
+	var (
+		ctx              = context.Background()
+		postingAccount   = suite.testAccounts["admin_account"]
+		receivingAccount = suite.testAccounts["local_account_1"]
+
+		// Admin account boosts a status by zork.
+		// Normally zork would get a notification
+		// for this, but zork mutes this thread.
+		status = suite.newStatus(
+			ctx,
+			postingAccount,
+			gtsmodel.VisibilityPublic,
+			nil,
+			suite.testStatuses["local_account_1_status_1"],
+		)
+		threadMute = &gtsmodel.ThreadMute{
+			ID:        "01HD3KRMBB1M85QRWHD912QWRE",
+			ThreadID:  suite.testStatuses["local_account_1_status_1"].ThreadID,
+			AccountID: receivingAccount.ID,
+		}
+	)
+
+	// Store the thread mute before processing new status.
+	if err := suite.db.PutThreadMute(ctx, threadMute); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Process the new status.
+	if err := suite.processor.Workers().ProcessFromClientAPI(
+		ctx,
+		messages.FromClientAPI{
+			APObjectType:   ap.ActivityAnnounce,
+			APActivityType: ap.ActivityCreate,
+			GTSModel:       status,
+			OriginAccount:  postingAccount,
+		},
+	); err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	// Ensure no notification received.
+	notif, err := suite.db.GetNotification(
+		ctx,
+		gtsmodel.NotificationReblog,
+		receivingAccount.ID,
+		postingAccount.ID,
+		status.ID,
+	)
+
+	suite.ErrorIs(err, db.ErrNoEntries)
+	suite.Nil(notif)
+}
+
 func (suite *FromClientAPITestSuite) TestProcessCreateStatusListRepliesPolicyListOnlyOK() {
 	// We're modifying the test list so take a copy.
 	testList := new(gtsmodel.List)

internal/processing/workers/fromfediapi.go

@@ -315,6 +315,11 @@ func (p *fediAPI) CreateLike(ctx context.Context, fMsg messages.FromFediAPI) err
 		return gtserror.Newf("%T not parseable as *gtsmodel.StatusFave", fMsg.GTSModel)
 	}
 
+	// Ensure fave populated.
+	if err := p.state.DB.PopulateStatusFave(ctx, fave); err != nil {
+		return gtserror.Newf("error populating status fave: %w", err)
+	}
+
 	if err := p.surface.notifyFave(ctx, fave); err != nil {
 		return gtserror.Newf("error notifying fave: %w", err)
 	}

internal/processing/workers/surfacenotify.go

@@ -28,15 +28,39 @@
 	"github.com/superseriousbusiness/gotosocial/internal/id"
 )
 
-// notifyMentions notifies each targeted account in
-// the given mentions that they have a new mention.
+// notifyMentions iterates through mentions on the
+// given status, and notifies each mentioned account
+// that they have a new mention.
 func (s *surface) notifyMentions(
 	ctx context.Context,
-	mentions []*gtsmodel.Mention,
+	status *gtsmodel.Status,
 ) error {
-	errs := gtserror.NewMultiError(len(mentions))
+	var (
+		mentions = status.Mentions
+		errs     = gtserror.NewMultiError(len(mentions))
+	)
 
 	for _, mention := range mentions {
+		// Ensure thread not muted
+		// by mentioned account.
+		muted, err := s.state.DB.IsThreadMutedByAccount(
+			ctx,
+			status.ThreadID,
+			mention.TargetAccountID,
+		)
+
+		if err != nil {
+			errs.Append(err)
+			continue
+		}
+
+		if muted {
+			// This mentioned account
+			// has muted the thread.
+			// Don't pester them.
+			continue
+		}
+
 		if err := s.notify(
 			ctx,
 			gtsmodel.NotificationMention,
@@ -114,6 +138,24 @@ func (s *surface) notifyFave(
 		return nil
 	}
 
+	// Ensure favee hasn't
+	// muted the thread.
+	muted, err := s.state.DB.IsThreadMutedByAccount(
+		ctx,
+		fave.Status.ThreadID,
+		fave.TargetAccountID,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	if muted {
+		// Boostee doesn't want
+		// notifs for this thread.
+		return nil
+	}
+
 	return s.notify(
 		ctx,
 		gtsmodel.NotificationFave,
@@ -134,11 +176,35 @@ func (s *surface) notifyAnnounce(
 		return nil
 	}
 
+	if status.BoostOf == nil {
+		// No boosted status
+		// set, nothing to do.
+		return nil
+	}
+
 	if status.BoostOfAccountID == status.AccountID {
 		// Self-boost, nothing to do.
 		return nil
 	}
 
+	// Ensure boostee hasn't
+	// muted the thread.
+	muted, err := s.state.DB.IsThreadMutedByAccount(
+		ctx,
+		status.BoostOf.ThreadID,
+		status.BoostOfAccountID,
+	)
+
+	if err != nil {
+		return err
+	}
+
+	if muted {
+		// Boostee doesn't want
+		// notifs for this thread.
+		return nil
+	}
+
 	return s.notify(
 		ctx,
 		gtsmodel.NotificationReblog,

internal/processing/workers/surfacetimeline.go

@@ -67,7 +67,7 @@ func (s *surface) timelineAndNotifyStatus(ctx context.Context, status *gtsmodel.
 	}
 
 	// Notify each local account that's mentioned by this status.
-	if err := s.notifyMentions(ctx, status.Mentions); err != nil {
+	if err := s.notifyMentions(ctx, status); err != nil {
 		return gtserror.Newf("error notifying status mentions for status %s: %w", status.ID, err)
 	}
 

internal/typeutils/util.go

@@ -52,7 +52,7 @@ func (c *Converter) interactionsWithStatusForAccount(ctx context.Context, s *gts
 		}
 		si.Reblogged = reblogged
 
-		muted, err := c.state.DB.IsStatusMutedBy(ctx, s, requestingAccount.ID)
+		muted, err := c.state.DB.IsThreadMutedByAccount(ctx, s.ThreadID, requestingAccount.ID)
 		if err != nil {
 			return nil, fmt.Errorf("error checking if requesting account has muted status: %s", err)
 		}

test/envparsing.sh

@@ -48,6 +48,7 @@ EXPECT=$(cat << "EOF"
         "status-fave-mem-ratio": 2,
         "status-mem-ratio": 5,
         "tag-mem-ratio": 2,
+        "thread-mute-mem-ratio": 0.2,
         "tombstone-mem-ratio": 0.5,
         "user-mem-ratio": 0.25,
         "visibility-mem-ratio": 2,

testrig/db.go

@@ -49,8 +49,10 @@
 	&gtsmodel.StatusToTag{},
 	&gtsmodel.StatusFave{},
 	&gtsmodel.StatusBookmark{},
-	&gtsmodel.StatusMute{},
 	&gtsmodel.Tag{},
+	&gtsmodel.Thread{},
+	&gtsmodel.ThreadMute{},
+	&gtsmodel.ThreadToStatus{},
 	&gtsmodel.User{},
 	&gtsmodel.Emoji{},
 	&gtsmodel.Instance{},
@@ -301,6 +303,18 @@ func StandardDBSetup(db db.DB, accounts map[string]*gtsmodel.Account) {
 		}
 	}
 
+	for _, v := range NewTestThreads() {
+		if err := db.Put(ctx, v); err != nil {
+			log.Panic(nil, err)
+		}
+	}
+
+	for _, v := range NewTestThreadToStatus() {
+		if err := db.Put(ctx, v); err != nil {
+			log.Panic(nil, err)
+		}
+	}
+
 	if err := db.CreateInstanceAccount(ctx); err != nil {
 		log.Panic(nil, err)
 	}

testrig/testmodels.go

@@ -1318,6 +1318,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH17FWEB39HZJ76B6VXSKF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDF2Q4HV5QC161C4TGQ0M3",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(false),
@@ -1343,6 +1344,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH17FWEB39HZJ76B6VXSKF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDQ1C7APSEY34B1HFVHVX7",
 			ContentWarning:           "open to see some puppies",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(true),
@@ -1370,6 +1372,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			InReplyToAccountID:       "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToURI:             "http://localhost:8080/users/the_mighty_zork/statuses/01F8MHAMCHF6Y650WCRSCP4WMY",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDKKBWECZJQ93E262N36VN",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(false),
 			Language:                 "en",
@@ -1396,6 +1399,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			InReplyToURI:             "",
 			BoostOfID:                "01F8MHAMCHF6Y650WCRSCP4WMY",
 			BoostOfAccountID:         "01F8MH1H7YV1Z7D2C8K2730QBF",
+			ThreadID:                 "",
 			ContentWarning:           "introduction post",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(true),
@@ -1420,6 +1424,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDKKBWECZJQ93E262N36VN",
 			ContentWarning:           "introduction post",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(true),
@@ -1444,6 +1449,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDVTW3HQWSX66VJQ91Z1RH",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityUnlocked,
 			Sensitive:                util.Ptr(false),
@@ -1468,6 +1474,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDY9PDNHDBDBBFTJKJY8XE",
 			ContentWarning:           "test: you shouldn't be able to interact with this post in any way",
 			Visibility:               gtsmodel.VisibilityMutualsOnly,
 			Sensitive:                util.Ptr(false),
@@ -1493,6 +1500,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE0H2GKH794Q7GDPANH91Q",
 			ContentWarning:           "eye contact, trent reznor gif, cow",
 			Visibility:               gtsmodel.VisibilityMutualsOnly,
 			Sensitive:                util.Ptr(false),
@@ -1518,6 +1526,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE1ERQSMMVWDD0BE491E2P",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityFollowersOnly,
 			Sensitive:                util.Ptr(false),
@@ -1542,6 +1551,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH5NBDF2MV7CTC4Q5128HF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE2Q24FWCZE41AS77SDFRZ",
 			ContentWarning:           "introduction post",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(true),
@@ -1566,6 +1576,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH5NBDF2MV7CTC4Q5128HF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE3P291Z3NJEJVFPW0K9ZQ",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(true),
@@ -1590,6 +1601,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH5NBDF2MV7CTC4Q5128HF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE4P0EW9HBA5WHW97D5YV0",
 			ContentWarning:           "you won't be able to like or reply to this",
 			Visibility:               gtsmodel.VisibilityUnlocked,
 			Sensitive:                util.Ptr(true),
@@ -1614,6 +1626,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH5NBDF2MV7CTC4Q5128HF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE5JXFPFP3P5W2QNHVVV27",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(true),
@@ -1642,6 +1655,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			InReplyToAccountID:       "01F8MH1H7YV1Z7D2C8K2730QBF",
 			InReplyToURI:             "http://localhost:8080/users/the_mighty_zork/statuses/01F8MHAMCHF6Y650WCRSCP4WMY",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWDKKBWECZJQ93E262N36VN",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityPublic,
 			Sensitive:                util.Ptr(false),
@@ -1669,6 +1683,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			InReplyToAccountID:       "",
 			InReplyToURI:             "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE71MGRRDSHBKXFD5DDSWR",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityDirect,
 			Sensitive:                util.Ptr(false),
@@ -1695,6 +1710,7 @@ func NewTestStatuses() map[string]*gtsmodel.Status {
 			AccountID:                "01F8MH5NBDF2MV7CTC4Q5128HF",
 			InReplyToID:              "",
 			BoostOfID:                "",
+			ThreadID:                 "01HCWE7ZNC2SS4P05WA5QYED23",
 			ContentWarning:           "",
 			Visibility:               gtsmodel.VisibilityFollowersOnly,
 			Sensitive:                util.Ptr(false),
@@ -1767,6 +1783,111 @@ func NewTestStatusToTags() map[string]*gtsmodel.StatusToTag {
 	}
 }
 
+func NewTestThreads() map[string]*gtsmodel.Thread {
+	return map[string]*gtsmodel.Thread{
+		"admin_account_status_1": {
+			ID: "01HCWDF2Q4HV5QC161C4TGQ0M3",
+		},
+		"admin_account_status_2": {
+			ID: "01HCWDQ1C7APSEY34B1HFVHVX7",
+		},
+		"local_account_1_status_1": {
+			ID: "01HCWDKKBWECZJQ93E262N36VN",
+		},
+		"local_account_1_status_2": {
+			ID: "01HCWDVTW3HQWSX66VJQ91Z1RH",
+		},
+		"local_account_1_status_3": {
+			ID: "01HCWDY9PDNHDBDBBFTJKJY8XE",
+		},
+		"local_account_1_status_4": {
+			ID: "01HCWE0H2GKH794Q7GDPANH91Q",
+		},
+		"local_account_1_status_5": {
+			ID: "01HCWE1ERQSMMVWDD0BE491E2P",
+		},
+		"local_account_2_status_1": {
+			ID: "01HCWE2Q24FWCZE41AS77SDFRZ",
+		},
+		"local_account_2_status_2": {
+			ID: "01HCWE3P291Z3NJEJVFPW0K9ZQ",
+		},
+		"local_account_2_status_3": {
+			ID: "01HCWE4P0EW9HBA5WHW97D5YV0",
+		},
+		"local_account_2_status_4": {
+			ID: "01HCWE5JXFPFP3P5W2QNHVVV27",
+		},
+		"local_account_2_status_6": {
+			ID: "01HCWE71MGRRDSHBKXFD5DDSWR",
+		},
+		"local_account_2_status_7": {
+			ID: "01HCWE7ZNC2SS4P05WA5QYED23",
+		},
+	}
+}
+
+func NewTestThreadToStatus() []*gtsmodel.ThreadToStatus {
+	return []*gtsmodel.ThreadToStatus{
+		{
+			ThreadID: "01HCWDF2Q4HV5QC161C4TGQ0M3",
+			StatusID: "01F8MH75CBF9JFX4ZAD54N0W0R",
+		},
+		{
+			ThreadID: "01HCWDQ1C7APSEY34B1HFVHVX7",
+			StatusID: "01F8MHAAY43M6RJ473VQFCVH37",
+		},
+		{
+			ThreadID: "01HCWDKKBWECZJQ93E262N36VN",
+			StatusID: "01FF25D5Q0DH7CHD57CTRS6WK0",
+		},
+		{
+			ThreadID: "01HCWDKKBWECZJQ93E262N36VN",
+			StatusID: "01F8MHAMCHF6Y650WCRSCP4WMY",
+		},
+		{
+			ThreadID: "01HCWDVTW3HQWSX66VJQ91Z1RH",
+			StatusID: "01F8MHAYFKS4KMXF8K5Y1C0KRN",
+		},
+		{
+			ThreadID: "01HCWDY9PDNHDBDBBFTJKJY8XE",
+			StatusID: "01F8MHBBN8120SYH7D5S050MGK",
+		},
+		{
+			ThreadID: "01HCWE0H2GKH794Q7GDPANH91Q",
+			StatusID: "01F8MH82FYRXD2RC6108DAJ5HB",
+		},
+		{
+			ThreadID: "01HCWE1ERQSMMVWDD0BE491E2P",
+			StatusID: "01FCTA44PW9H1TB328S9AQXKDS",
+		},
+		{
+			ThreadID: "01HCWE2Q24FWCZE41AS77SDFRZ",
+			StatusID: "01F8MHBQCBTDKN6X5VHGMMN4MA",
+		},
+		{
+			ThreadID: "01HCWE3P291Z3NJEJVFPW0K9ZQ",
+			StatusID: "01F8MHC0H0A7XHTVH5F596ZKBM",
+		},
+		{
+			ThreadID: "01HCWE4P0EW9HBA5WHW97D5YV0",
+			StatusID: "01F8MHC8VWDRBQR0N1BATDDEM5",
+		},
+		{
+			ThreadID: "01HCWDKKBWECZJQ93E262N36VN",
+			StatusID: "01FCQSQ667XHJ9AV9T27SJJSX5",
+		},
+		{
+			ThreadID: "01HCWE71MGRRDSHBKXFD5DDSWR",
+			StatusID: "01FN3VJGFH10KR7S2PB0GFJZYG",
+		},
+		{
+			ThreadID: "01HCWE7ZNC2SS4P05WA5QYED23",
+			StatusID: "01G20ZM733MGN8J344T4ZDDFY1",
+		},
+	}
+}
+
 // NewTestMentions returns a map of gts model mentions keyed by their name.
 func NewTestMentions() map[string]*gtsmodel.Mention {
 	return map[string]*gtsmodel.Mention{