Faves (#31)

* start on federating faves

* outbound federation of likes working

internal/db/db.go

@@ -270,7 +270,7 @@ type DB interface {
 
 	// FaveStatus faves the given status, using accountID as the faver.
 	// The returned fave will be nil if the status was already faved.
-	FaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error)
+	// FaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error)
 
 	// UnfaveStatus unfaves the given status, using accountID as the unfaver (sure, that's a word).
 	// The returned fave will be nil if the status was already not faved.

internal/db/pg/pg.go

@@ -1037,32 +1037,32 @@ func (ps *postgresService) StatusBookmarkedBy(status *gtsmodel.Status, accountID
 	return ps.conn.Model(&gtsmodel.StatusBookmark{}).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Exists()
 }
 
-func (ps *postgresService) FaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error) {
+// func (ps *postgresService) FaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error) {
-	// first check if a fave already exists, we can just return if so
+// 	// first check if a fave already exists, we can just return if so
-	existingFave := &gtsmodel.StatusFave{}
+// 	existingFave := &gtsmodel.StatusFave{}
-	err := ps.conn.Model(existingFave).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Select()
+// 	err := ps.conn.Model(existingFave).Where("status_id = ?", status.ID).Where("account_id = ?", accountID).Select()
-	if err == nil {
+// 	if err == nil {
-		// fave already exists so just return nothing at all
+// 		// fave already exists so just return nothing at all
-		return nil, nil
+// 		return nil, nil
-	}
+// 	}
 
-	// an error occurred so it might exist or not, we don't know
+// 	// an error occurred so it might exist or not, we don't know
-	if err != pg.ErrNoRows {
+// 	if err != pg.ErrNoRows {
-		return nil, err
+// 		return nil, err
-	}
+// 	}
 
-	// it doesn't exist so create it
+// 	// it doesn't exist so create it
-	newFave := &gtsmodel.StatusFave{
+// 	newFave := &gtsmodel.StatusFave{
-		AccountID:       accountID,
+// 		AccountID:       accountID,
-		TargetAccountID: status.AccountID,
+// 		TargetAccountID: status.AccountID,
-		StatusID:        status.ID,
+// 		StatusID:        status.ID,
-	}
+// 	}
-	if _, err = ps.conn.Model(newFave).Insert(); err != nil {
+// 	if _, err = ps.conn.Model(newFave).Insert(); err != nil {
-		return nil, err
+// 		return nil, err
-	}
+// 	}
 
-	return newFave, nil
+// 	return newFave, nil
-}
+// }
 
 func (ps *postgresService) UnfaveStatus(status *gtsmodel.Status, accountID string) (*gtsmodel.StatusFave, error) {
 	// if a fave doesn't exist, we don't need to do anything

internal/federation/federating_db.go

@@ -777,7 +777,7 @@ func (f *federatingDB) NewID(c context.Context, t vocab.Type) (id *url.URL, err
 				if iter.IsIRI() {
 					actorAccount := &gtsmodel.Account{}
 					if err := f.db.GetWhere([]db.Where{{Key: "uri", Value: iter.GetIRI().String()}}, actorAccount); err == nil { // if there's an error here, just use the fallback behavior -- we don't need to return an error here
-						return url.Parse(util.GenerateURIForFollow(actorAccount.Username, f.config.Protocol, f.config.Host))
+						return url.Parse(util.GenerateURIForFollow(actorAccount.Username, f.config.Protocol, f.config.Host, uuid.NewString()))
 					}
 				}
 			}
@@ -787,7 +787,7 @@ func (f *federatingDB) NewID(c context.Context, t vocab.Type) (id *url.URL, err
 		// ID might already be set on a note we've created, so check it here and return it if it is
 		note, ok := t.(vocab.ActivityStreamsNote)
 		if !ok {
-			return nil, errors.New("newid: follow couldn't be parsed into vocab.ActivityStreamsNote")
+			return nil, errors.New("newid: note couldn't be parsed into vocab.ActivityStreamsNote")
 		}
 		idProp := note.GetJSONLDId()
 		if idProp != nil {
@@ -795,6 +795,19 @@ func (f *federatingDB) NewID(c context.Context, t vocab.Type) (id *url.URL, err
 				return idProp.GetIRI(), nil
 			}
 		}
+	case gtsmodel.ActivityStreamsLike:
+		// LIKE aka FAVE
+		// ID might already be set on a fave we've created, so check it here and return it if it is
+		fave, ok := t.(vocab.ActivityStreamsLike)
+		if !ok {
+			return nil, errors.New("newid: fave couldn't be parsed into vocab.ActivityStreamsLike")
+		}
+		idProp := fave.GetJSONLDId()
+		if idProp != nil {
+			if idProp.IsIRI() {
+				return idProp.GetIRI(), nil
+			}
+		}
 	}
 
 	// fallback default behavior: just return a random UUID after our protocol and host

internal/gtsmodel/statusfave.go

@@ -32,7 +32,13 @@ type StatusFave struct {
 	TargetAccountID string `pg:",notnull"`
 	// database id of the status that has been 'faved'
 	StatusID string `pg:",notnull"`
+	// ActivityPub URI of this fave
+	URI string `pg:",notnull"`
 
-	// FavedStatus is the status being interacted with. It won't be put or retrieved from the db, it's just for conveniently passing a pointer around.
+	// GTSStatus is the status being interacted with. It won't be put or retrieved from the db, it's just for conveniently passing a pointer around.
-	FavedStatus *Status `pg:"-"`
+	GTSStatus *Status `pg:"-"`
+	// GTSTargetAccount is the account being interacted with. It won't be put or retrieved from the db, it's just for conveniently passing a pointer around.
+	GTSTargetAccount *Account `pg:"-"`
+	// GTSFavingAccount is the account doing the faving. It won't be put or retrieved from the db, it's just for conveniently passing a pointer around.
+	GTSFavingAccount *Account `pg:"-"`
 }

internal/message/accountprocess.go

@@ -22,6 +22,7 @@
 	"errors"
 	"fmt"
 
+	"github.com/google/uuid"
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
@@ -417,11 +418,15 @@ func (p *processor) AccountFollowCreate(authed *oauth.Auth, form *apimodel.Accou
 	}
 
 	// make the follow request
+
+	newFollowID := uuid.NewString()
+
 	fr := &gtsmodel.FollowRequest{
+		ID:              newFollowID,
 		AccountID:       authed.Account.ID,
 		TargetAccountID: form.TargetAccountID,
 		ShowReblogs:     true,
-		URI:             util.GenerateURIForFollow(authed.Account.Username, p.config.Protocol, p.config.Host),
+		URI:             util.GenerateURIForFollow(authed.Account.Username, p.config.Protocol, p.config.Host, newFollowID),
 		Notify:          false,
 	}
 	if form.Reblogs != nil {

internal/message/fromclientapiprocess.go

@@ -44,7 +44,7 @@ func (p *processor) processFromClientAPI(clientMsg gtsmodel.FromClientAPI) error
 				return err
 			}
 
-			if status.VisibilityAdvanced.Federated {
+			if status.VisibilityAdvanced != nil && status.VisibilityAdvanced.Federated {
 				return p.federateStatus(status)
 			}
 			return nil
@@ -60,6 +60,18 @@ func (p *processor) processFromClientAPI(clientMsg gtsmodel.FromClientAPI) error
 			}
 
 			return p.federateFollow(follow, clientMsg.OriginAccount, clientMsg.TargetAccount)
+		case gtsmodel.ActivityStreamsLike:
+			// CREATE LIKE/FAVE
+			fave, ok := clientMsg.GTSModel.(*gtsmodel.StatusFave)
+			if !ok {
+				return errors.New("fave was not parseable as *gtsmodel.StatusFave")
+			}
+
+			if err := p.notifyFave(fave); err != nil {
+				return err
+			}
+
+			return p.federateFave(fave, clientMsg.OriginAccount, clientMsg.TargetAccount)
 		}
 	case gtsmodel.ActivityStreamsUpdate:
 		// UPDATE
@@ -214,3 +226,23 @@ func (p *processor) federateAcceptFollowRequest(follow *gtsmodel.Follow, originA
 	_, err = p.federator.FederatingActor().Send(context.Background(), outboxIRI, accept)
 	return err
 }
+
+func (p *processor) federateFave(fave *gtsmodel.StatusFave, originAccount *gtsmodel.Account, targetAccount *gtsmodel.Account) error {
+	// if both accounts are local there's nothing to do here
+	if originAccount.Domain == "" && targetAccount.Domain == "" {
+		return nil
+	}
+
+	// create the AS fave
+	asFave, err := p.tc.FaveToAS(fave)
+	if err != nil {
+		return fmt.Errorf("federateFave: error converting fave to as format: %s", err)
+	}
+
+	outboxIRI, err := url.Parse(originAccount.OutboxURI)
+	if err != nil {
+		return fmt.Errorf("federateFave: error parsing outboxURI %s: %s", originAccount.OutboxURI, err)
+	}
+	_, err = p.federator.FederatingActor().Send(context.Background(), outboxIRI, asFave)
+	return err
+}

internal/message/fromcommonprocess.go

@@ -27,3 +27,7 @@ func (p *processor) notifyStatus(status *gtsmodel.Status) error {
 func (p *processor) notifyFollow(follow *gtsmodel.Follow) error {
 	return nil
 }
+
+func (p *processor) notifyFave(fave *gtsmodel.StatusFave) error {
+   return nil
+}

internal/message/statusprocess.go

@@ -25,6 +25,7 @@
 
 	"github.com/google/uuid"
 	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/oauth"
 	"github.com/superseriousbusiness/gotosocial/internal/util"
@@ -168,6 +169,14 @@ func (p *processor) StatusFave(authed *oauth.Auth, targetStatusID string) (*apim
 		return nil, fmt.Errorf("error fetching related accounts for status %s: %s", targetStatusID, err)
 	}
 
+	var boostOfStatus *gtsmodel.Status
+	if targetStatus.BoostOfID != "" {
+		boostOfStatus = &gtsmodel.Status{}
+		if err := p.db.GetByID(targetStatus.BoostOfID, boostOfStatus); err != nil {
+			return nil, fmt.Errorf("error fetching boosted status %s: %s", targetStatus.BoostOfID, err)
+		}
+	}
+
 	l.Trace("going to see if status is visible")
 	visible, err := p.db.StatusVisible(targetStatus, targetAccount, authed.Account, relevantAccounts) // requestingAccount might well be nil here, but StatusVisible knows how to take care of that
 	if err != nil {
@@ -185,20 +194,44 @@ func (p *processor) StatusFave(authed *oauth.Auth, targetStatusID string) (*apim
 		}
 	}
 
-	// it's visible! it's faveable! so let's fave the FUCK out of it
+	// first check if the status is already faved, if so we don't need to do anything
-	_, err = p.db.FaveStatus(targetStatus, authed.Account.ID)
+	newFave := true
-	if err != nil {
+	gtsFave := &gtsmodel.Status{}
-		return nil, fmt.Errorf("error faveing status: %s", err)
+	if err := p.db.GetWhere([]db.Where{{Key: "status_id", Value: targetStatus.ID}, {Key: "account_id", Value: authed.Account.ID}}, gtsFave); err == nil {
+		// we already have a fave for this status
+		newFave = false
 	}
 
-	var boostOfStatus *gtsmodel.Status
+	if newFave {
-	if targetStatus.BoostOfID != "" {
+		thisFaveID := uuid.NewString()
-		boostOfStatus = &gtsmodel.Status{}
+
-		if err := p.db.GetByID(targetStatus.BoostOfID, boostOfStatus); err != nil {
+		// we need to create a new fave in the database
-			return nil, fmt.Errorf("error fetching boosted status %s: %s", targetStatus.BoostOfID, err)
+		gtsFave := &gtsmodel.StatusFave{
+			ID:               thisFaveID,
+			AccountID:        authed.Account.ID,
+			TargetAccountID:  targetAccount.ID,
+			StatusID:         targetStatus.ID,
+			URI:              util.GenerateURIForLike(authed.Account.Username, p.config.Protocol, p.config.Host, thisFaveID),
+			GTSStatus:        targetStatus,
+			GTSTargetAccount: targetAccount,
+			GTSFavingAccount: authed.Account,
+		}
+
+		if err := p.db.Put(gtsFave); err != nil {
+			return nil, err
+		}
+
+		// send the new fave through the processor channel for federation etc
+		p.fromClientAPI <- gtsmodel.FromClientAPI{
+			APObjectType:   gtsmodel.ActivityStreamsLike,
+			APActivityType: gtsmodel.ActivityStreamsCreate,
+			GTSModel:       gtsFave,
+			OriginAccount:  authed.Account,
+			TargetAccount:  targetAccount,
 		}
 	}
 
+	// return the mastodon representation of the target status
 	mastoStatus, err := p.tc.StatusToMasto(targetStatus, targetAccount, authed.Account, relevantAccounts.BoostedAccount, relevantAccounts.ReplyToAccount, boostOfStatus)
 	if err != nil {
 		return nil, fmt.Errorf("error converting status %s to frontend representation: %s", targetStatus.ID, err)

internal/typeutils/converter.go

@@ -126,6 +126,9 @@ type TypeConverter interface {
 
 	// AttachmentToAS converts a gts model media attachment into an activity streams Attachment, suitable for federation
 	AttachmentToAS(a *gtsmodel.MediaAttachment) (vocab.ActivityStreamsDocument, error)
+
+	// FaveToAS converts a gts model status fave into an activityStreams LIKE, suitable for federation.
+	FaveToAS(f *gtsmodel.StatusFave) (vocab.ActivityStreamsLike, error)
 }
 
 type converter struct {

internal/typeutils/internaltoas.go

@@ -559,3 +559,84 @@ func (c *converter) AttachmentToAS(a *gtsmodel.MediaAttachment) (vocab.ActivityS
 
 	return doc, nil
 }
+
+/*
+	We want to end up with something like this:
+
+	{
+	"@context": "https://www.w3.org/ns/activitystreams",
+	"actor": "https://ondergrond.org/users/dumpsterqueer",
+	"id": "https://ondergrond.org/users/dumpsterqueer#likes/44584",
+	"object": "https://testingtesting123.xyz/users/gotosocial_test_account/statuses/771aea80-a33d-4d6d-8dfd-57d4d2bfcbd4",
+	"type": "Like"
+	}
+*/
+func (c *converter) FaveToAS(f *gtsmodel.StatusFave) (vocab.ActivityStreamsLike, error) {
+	// check if targetStatus is already pinned to this fave, and fetch it if not
+	if f.GTSStatus == nil {
+		s := &gtsmodel.Status{}
+		if err := c.db.GetByID(f.StatusID, s); err != nil {
+			return nil, fmt.Errorf("FaveToAS: error fetching target status from database: %s", err)
+		}
+		f.GTSStatus = s
+	}
+
+	// check if the targetAccount is already pinned to this fave, and fetch it if not
+	if f.GTSTargetAccount == nil {
+		a := &gtsmodel.Account{}
+		if err := c.db.GetByID(f.TargetAccountID, a); err != nil {
+			return nil, fmt.Errorf("FaveToAS: error fetching target account from database: %s", err)
+		}
+		f.GTSTargetAccount = a
+	}
+
+	// check if the faving account is already pinned to this fave, and fetch it if not
+	if f.GTSFavingAccount == nil {
+		a := &gtsmodel.Account{}
+		if err := c.db.GetByID(f.AccountID, a); err != nil {
+			return nil, fmt.Errorf("FaveToAS: error fetching faving account from database: %s", err)
+		}
+		f.GTSFavingAccount = a
+	}
+
+	// create the like
+	like := streams.NewActivityStreamsLike()
+
+	// set the actor property to the fave-ing account's URI
+	actorProp := streams.NewActivityStreamsActorProperty()
+	actorIRI, err := url.Parse(f.GTSFavingAccount.URI)
+	if err != nil {
+		return nil, fmt.Errorf("FaveToAS: error parsing uri %s: %s", f.GTSFavingAccount.URI, err)
+	}
+	actorProp.AppendIRI(actorIRI)
+	like.SetActivityStreamsActor(actorProp)
+
+	// set the ID property to the fave's URI
+	idProp := streams.NewJSONLDIdProperty()
+	idIRI, err := url.Parse(f.URI)
+	if err != nil {
+		return nil, fmt.Errorf("FaveToAS: error parsing uri %s: %s", f.URI, err)
+	}
+	idProp.Set(idIRI)
+	like.SetJSONLDId(idProp)
+
+	// set the object property to the target status's URI
+	objectProp := streams.NewActivityStreamsObjectProperty()
+	statusIRI, err := url.Parse(f.GTSStatus.URI)
+	if err != nil {
+		return nil, fmt.Errorf("FaveToAS: error parsing uri %s: %s", f.GTSStatus.URI, err)
+	}
+	objectProp.AppendIRI(statusIRI)
+	like.SetActivityStreamsObject(objectProp)
+
+	// set the TO property to the target account's IRI
+	toProp := streams.NewActivityStreamsToProperty()
+	toIRI, err := url.Parse(f.GTSTargetAccount.URI)
+	if err != nil {
+		return nil, fmt.Errorf("FaveToAS: error parsing uri %s: %s", f.GTSTargetAccount.URI, err)
+	}
+	toProp.AppendIRI(toIRI)
+	like.SetActivityStreamsTo(toProp)
+
+	return like, nil
+}

internal/util/regexes.go

@@ -85,13 +85,18 @@
 	// followingPathRegex parses a path that validates and captures the username part from eg /users/example_username/following
 	followingPathRegex = regexp.MustCompile(followingPathRegexString)
 
-	likedPathRegexString = fmt.Sprintf(`^/?%s/%s/%s$`, UsersPath, usernameRegexString, LikedPath)
-	// followingPathRegex parses a path that validates and captures the username part from eg /users/example_username/liked
-	likedPathRegex = regexp.MustCompile(likedPathRegexString)
-
 	// see https://ihateregex.io/expr/uuid/
 	uuidRegexString = `[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}`
 
+	likedPathRegexString = fmt.Sprintf(`^/?%s/(%s)/%s$`, UsersPath, usernameRegexString, LikedPath)
+	// likedPathRegex parses a path that validates and captures the username part from eg /users/example_username/liked
+	likedPathRegex = regexp.MustCompile(likedPathRegexString)
+
+	likePathRegexString = fmt.Sprintf(`^/?%s/(%s)/%s/(%s)$`, UsersPath, usernameRegexString, LikedPath, uuidRegexString)
+	// likePathRegex parses a path that validates and captures the username part and the uuid part
+	// from eg /users/example_username/liked/123e4567-e89b-12d3-a456-426655440000.
+	likePathRegex = regexp.MustCompile(likePathRegexString)
+
 	statusesPathRegexString = fmt.Sprintf(`^/?%s/(%s)/%s/(%s)$`, UsersPath, usernameRegexString, StatusesPath, uuidRegexString)
 	// statusesPathRegex parses a path that validates and captures the username part and the uuid part
 	// from eg /users/example_username/statuses/123e4567-e89b-12d3-a456-426655440000.

internal/util/uri.go

@@ -22,8 +22,6 @@
 	"fmt"
 	"net/url"
 	"strings"
-
-	"github.com/google/uuid"
 )
 
 const (
@@ -109,8 +107,14 @@ type UserURIs struct {
 
 // GenerateURIForFollow returns the AP URI for a new follow -- something like:
 // https://example.org/users/whatever_user/follow/41c7f33f-1060-48d9-84df-38dcb13cf0d8
-func GenerateURIForFollow(username string, protocol string, host string) string {
+func GenerateURIForFollow(username string, protocol string, host string, thisFollowID string) string {
-	return fmt.Sprintf("%s://%s/%s/%s/%s", protocol, host, UsersPath, FollowPath, uuid.NewString())
+	return fmt.Sprintf("%s://%s/%s/%s/%s", protocol, host, UsersPath, FollowPath, thisFollowID)
+}
+
+// GenerateURIForFollow returns the AP URI for a new like/fave -- something like:
+// https://example.org/users/whatever_user/liked/41c7f33f-1060-48d9-84df-38dcb13cf0d8
+func GenerateURIForLike(username string, protocol string, host string, thisFavedID string) string {
+	return fmt.Sprintf("%s://%s/%s/%s/%s", protocol, host, UsersPath, LikedPath, thisFavedID)
 }
 
 // GenerateURIsForAccount throws together a bunch of URIs for the given username, with the given protocol and host.
@@ -183,6 +187,11 @@ func IsLikedPath(id *url.URL) bool {
 	return likedPathRegex.MatchString(strings.ToLower(id.Path))
 }
 
+// IsLikedPath returns true if the given URL path corresponds to eg /users/example_username/liked/SOME_UUID_OF_A_STATUS
+func IsLikePath(id *url.URL) bool {
+	return likePathRegex.MatchString(strings.ToLower(id.Path))
+}
+
 // IsStatusesPath returns true if the given URL path corresponds to eg /users/example_username/statuses/SOME_UUID_OF_A_STATUS
 func IsStatusesPath(id *url.URL) bool {
 	return statusesPathRegex.MatchString(strings.ToLower(id.Path))
@@ -254,3 +263,15 @@ func ParseFollowingPath(id *url.URL) (username string, err error) {
 	username = matches[1]
 	return
 }
+
+// ParseLikedPath returns the username and uuid from a path such as /users/example_username/liked/SOME_UUID_OF_A_STATUS
+func ParseLikedPath(id *url.URL) (username string, uuid string, err error) {
+	matches := likePathRegex.FindStringSubmatch(id.Path)
+	if len(matches) != 3 {
+		err = fmt.Errorf("expected 3 matches but matches length was %d", len(matches))
+		return
+	}
+	username = matches[1]
+	uuid = matches[2]
+	return
+}