GoToSocial/internal/processing/timeline.go

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/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
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 processing
import (
"fmt"
"net/url"
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/oauth"
)
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func (p *processor) packageStatusResponse(statuses []*apimodel.Status, path string, nextMaxID string, prevMinID string, limit int) (*apimodel.StatusTimelineResponse, gtserror.WithCode) {
resp := &apimodel.StatusTimelineResponse{
Statuses: []*apimodel.Status{},
}
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resp.Statuses = statuses
// prepare the next and previous links
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if len(statuses) != 0 {
nextLink := &url.URL{
Scheme: p.config.Protocol,
Host: p.config.Host,
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Path: path,
RawQuery: fmt.Sprintf("limit=%d&max_id=%s", limit, nextMaxID),
}
next := fmt.Sprintf("<%s>; rel=\"next\"", nextLink.String())
prevLink := &url.URL{
Scheme: p.config.Protocol,
Host: p.config.Host,
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Path: path,
RawQuery: fmt.Sprintf("limit=%d&min_id=%s", limit, prevMinID),
}
prev := fmt.Sprintf("<%s>; rel=\"prev\"", prevLink.String())
resp.LinkHeader = fmt.Sprintf("%s, %s", next, prev)
}
return resp, nil
}
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func (p *processor) HomeTimelineGet(authed *oauth.Auth, maxID string, sinceID string, minID string, limit int, local bool) (*apimodel.StatusTimelineResponse, gtserror.WithCode) {
statuses, err := p.timelineManager.HomeTimeline(authed.Account.ID, maxID, sinceID, minID, limit, local)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
if len(statuses) == 0 {
return &apimodel.StatusTimelineResponse{
Statuses: []*apimodel.Status{},
}, nil
}
return p.packageStatusResponse(statuses, "api/v1/timelines/home", statuses[len(statuses)-1].ID, statuses[0].ID, limit)
}
func (p *processor) PublicTimelineGet(authed *oauth.Auth, maxID string, sinceID string, minID string, limit int, local bool) (*apimodel.StatusTimelineResponse, gtserror.WithCode) {
statuses, err := p.db.GetPublicTimelineForAccount(authed.Account.ID, maxID, sinceID, minID, limit, local)
if err != nil {
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if _, ok := err.(db.ErrNoEntries); ok {
// there are just no entries left
return &apimodel.StatusTimelineResponse{
Statuses: []*apimodel.Status{},
}, nil
}
// there's an actual error
return nil, gtserror.NewErrorInternalError(err)
}
s, err := p.filterPublicStatuses(authed, statuses)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return p.packageStatusResponse(s, "api/v1/timelines/public", s[len(s)-1].ID, s[0].ID, limit)
}
func (p *processor) FavedTimelineGet(authed *oauth.Auth, maxID string, minID string, limit int) (*apimodel.StatusTimelineResponse, gtserror.WithCode) {
statuses, nextMaxID, prevMinID, err := p.db.GetFavedTimelineForAccount(authed.Account.ID, maxID, minID, limit)
if err != nil {
if _, ok := err.(db.ErrNoEntries); ok {
// there are just no entries left
return &apimodel.StatusTimelineResponse{
Statuses: []*apimodel.Status{},
}, nil
}
// there's an actual error
return nil, gtserror.NewErrorInternalError(err)
}
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s, err := p.filterFavedStatuses(authed, statuses)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
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return p.packageStatusResponse(s, "api/v1/favourites", nextMaxID, prevMinID, limit)
}
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func (p *processor) filterPublicStatuses(authed *oauth.Auth, statuses []*gtsmodel.Status) ([]*apimodel.Status, error) {
l := p.log.WithField("func", "filterPublicStatuses")
apiStatuses := []*apimodel.Status{}
for _, s := range statuses {
targetAccount := &gtsmodel.Account{}
if err := p.db.GetByID(s.AccountID, targetAccount); err != nil {
if _, ok := err.(db.ErrNoEntries); ok {
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l.Debugf("filterPublicStatuses: skipping status %s because account %s can't be found in the db", s.ID, s.AccountID)
continue
}
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return nil, gtserror.NewErrorInternalError(fmt.Errorf("filterPublicStatuses: error getting status author: %s", err))
}
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timelineable, err := p.filter.StatusPublictimelineable(s, authed.Account)
if err != nil {
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l.Debugf("filterPublicStatuses: skipping status %s because of an error checking status visibility: %s", s.ID, err)
continue
}
if !timelineable {
continue
}
apiStatus, err := p.tc.StatusToMasto(s, authed.Account)
if err != nil {
l.Debugf("filterPublicStatuses: skipping status %s because it couldn't be converted to its mastodon representation: %s", s.ID, err)
continue
}
apiStatuses = append(apiStatuses, apiStatus)
}
return apiStatuses, nil
}
func (p *processor) filterFavedStatuses(authed *oauth.Auth, statuses []*gtsmodel.Status) ([]*apimodel.Status, error) {
l := p.log.WithField("func", "filterFavedStatuses")
apiStatuses := []*apimodel.Status{}
for _, s := range statuses {
targetAccount := &gtsmodel.Account{}
if err := p.db.GetByID(s.AccountID, targetAccount); err != nil {
if _, ok := err.(db.ErrNoEntries); ok {
l.Debugf("filterFavedStatuses: skipping status %s because account %s can't be found in the db", s.ID, s.AccountID)
continue
}
return nil, gtserror.NewErrorInternalError(fmt.Errorf("filterPublicStatuses: error getting status author: %s", err))
}
timelineable, err := p.filter.StatusVisible(s, authed.Account)
if err != nil {
l.Debugf("filterFavedStatuses: skipping status %s because of an error checking status visibility: %s", s.ID, err)
continue
}
if !timelineable {
continue
}
apiStatus, err := p.tc.StatusToMasto(s, authed.Account)
if err != nil {
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l.Debugf("filterFavedStatuses: skipping status %s because it couldn't be converted to its mastodon representation: %s", s.ID, err)
continue
}
apiStatuses = append(apiStatuses, apiStatus)
}
return apiStatuses, nil
}