mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 18:12:46 +00:00
c9b6220fef
* [chore] Add interaction filter to complement existing visibility filter
* pass in ptr to visibility and interaction filters to Processor{} to ensure shared
* use int constants for for match type, cache db calls in filterctx
* function name typo 😇
---------
Co-authored-by: kim <grufwub@gmail.com>
171 lines
5.2 KiB
Go
171 lines
5.2 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package timeline
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import (
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"context"
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"errors"
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"strconv"
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apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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statusfilter "github.com/superseriousbusiness/gotosocial/internal/filter/status"
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"github.com/superseriousbusiness/gotosocial/internal/filter/usermute"
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"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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func (p *Processor) PublicTimelineGet(
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ctx context.Context,
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requester *gtsmodel.Account,
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maxID string,
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sinceID string,
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minID string,
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limit int,
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local bool,
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) (*apimodel.PageableResponse, gtserror.WithCode) {
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const maxAttempts = 3
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var (
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nextMaxIDValue string
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prevMinIDValue string
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items = make([]any, 0, limit)
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)
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var filters []*gtsmodel.Filter
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var compiledMutes *usermute.CompiledUserMuteList
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if requester != nil {
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var err error
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filters, err = p.state.DB.GetFiltersForAccountID(ctx, requester.ID)
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if err != nil {
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err = gtserror.Newf("couldn't retrieve filters for account %s: %w", requester.ID, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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mutes, err := p.state.DB.GetAccountMutes(gtscontext.SetBarebones(ctx), requester.ID, nil)
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if err != nil {
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err = gtserror.Newf("couldn't retrieve mutes for account %s: %w", requester.ID, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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compiledMutes = usermute.NewCompiledUserMuteList(mutes)
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}
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// Try a few times to select appropriate public
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// statuses from the db, paging up or down to
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// reattempt if nothing suitable is found.
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outer:
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for attempts := 1; ; attempts++ {
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// Select slightly more than the limit to try to avoid situations where
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// we filter out all the entries, and have to make another db call.
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// It's cheaper to select more in 1 query than it is to do multiple queries.
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statuses, err := p.state.DB.GetPublicTimeline(ctx, maxID, sinceID, minID, limit+5, local)
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if err != nil && !errors.Is(err, db.ErrNoEntries) {
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err = gtserror.Newf("db error getting statuses: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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count := len(statuses)
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if count == 0 {
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// Nothing relevant (left) in the db.
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return util.EmptyPageableResponse(), nil
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}
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// Page up from first status in slice
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// (ie., one with the highest ID).
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prevMinIDValue = statuses[0].ID
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inner:
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for _, s := range statuses {
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// Push back the next page down ID to
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// this status, regardless of whether
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// we end up filtering it out or not.
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nextMaxIDValue = s.ID
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timelineable, err := p.visFilter.StatusPublicTimelineable(ctx, requester, s)
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if err != nil {
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log.Errorf(ctx, "error checking status visibility: %v", err)
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continue inner
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}
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if !timelineable {
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continue inner
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}
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apiStatus, err := p.converter.StatusToAPIStatus(ctx, s, requester, statusfilter.FilterContextPublic, filters, compiledMutes)
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if errors.Is(err, statusfilter.ErrHideStatus) {
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continue
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}
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if err != nil {
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log.Errorf(ctx, "error converting to api status: %v", err)
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continue inner
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}
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// Looks good, add this.
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items = append(items, apiStatus)
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// We called the db with a little
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// more than the desired limit.
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//
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// Ensure we don't return more
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// than the caller asked for.
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if len(items) == limit {
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break outer
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}
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}
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if len(items) != 0 {
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// We've got some items left after
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// filtering, happily break + return.
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break
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}
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if attempts >= maxAttempts {
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// We reached our attempts limit.
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// Be nice + warn about it.
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log.Warn(ctx, "reached max attempts to find items in public timeline")
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break
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}
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// We filtered out all items before we
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// found anything we could return, but
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// we still have attempts left to try
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// fetching again. Set paging params
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// and allow loop to continue.
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if minID != "" {
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// Paging up.
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minID = prevMinIDValue
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} else {
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// Paging down.
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maxID = nextMaxIDValue
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}
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}
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return util.PackagePageableResponse(util.PageableResponseParams{
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Items: items,
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Path: "/api/v1/timelines/public",
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NextMaxIDValue: nextMaxIDValue,
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PrevMinIDValue: prevMinIDValue,
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Limit: limit,
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ExtraQueryParams: []string{
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"local=" + strconv.FormatBool(local),
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},
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})
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}
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