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/*
GoToSocial
Copyright (C) 2021-2023 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 fedi
import (
"context"
"fmt"
"net/url"
"github.com/superseriousbusiness/activity/streams"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
// StatusGet handles the getting of a fedi/activitypub representation of a particular status, performing appropriate
// authentication before returning a JSON serializable interface to the caller.
func (p *Processor) StatusGet(ctx context.Context, requestedUsername string, requestedStatusID string) (interface{}, gtserror.WithCode) {
requestedAccount, requestingAccount, errWithCode := p.authenticate(ctx, requestedUsername)
if errWithCode != nil {
return nil, errWithCode
}
status, err := p.state.DB.GetStatusByID(ctx, requestedStatusID)
if err != nil {
return nil, gtserror.NewErrorNotFound(err)
}
if status.AccountID != requestedAccount.ID {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("status with id %s does not belong to account with id %s", status.ID, requestedAccount.ID))
}
visible, err := p.filter.StatusVisible(ctx, status, requestingAccount)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
if !visible {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("status with id %s not visible to user with id %s", status.ID, requestingAccount.ID))
}
asStatus, err := p.tc.StatusToAS(ctx, status)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
data, err := streams.Serialize(asStatus)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
// GetStatus handles the getting of a fedi/activitypub representation of replies to a status, performing appropriate
// authentication before returning a JSON serializable interface to the caller.
func (p *Processor) StatusRepliesGet(ctx context.Context, requestedUsername string, requestedStatusID string, page bool, onlyOtherAccounts bool, onlyOtherAccountsSet bool, minID string) (interface{}, gtserror.WithCode) {
requestedAccount, requestingAccount, errWithCode := p.authenticate(ctx, requestedUsername)
if errWithCode != nil {
return nil, errWithCode
}
status, err := p.state.DB.GetStatusByID(ctx, requestedStatusID)
if err != nil {
return nil, gtserror.NewErrorNotFound(err)
}
if status.AccountID != requestedAccount.ID {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("status with id %s does not belong to account with id %s", status.ID, requestedAccount.ID))
}
visible, err := p.filter.StatusVisible(ctx, status, requestingAccount)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
if !visible {
return nil, gtserror.NewErrorNotFound(fmt.Errorf("status with id %s not visible to user with id %s", status.ID, requestingAccount.ID))
}
var data map[string]interface{}
// now there are three scenarios:
// 1. we're asked for the whole collection and not a page -- we can just return the collection, with no items, but a link to 'first' page.
// 2. we're asked for a page but only_other_accounts has not been set in the query -- so we should just return the first page of the collection, with no items.
// 3. we're asked for a page, and only_other_accounts has been set, and min_id has optionally been set -- so we need to return some actual items!
switch {
case !page:
// scenario 1
// get the collection
collection, err := p.tc.StatusToASRepliesCollection(ctx, status, onlyOtherAccounts)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
data, err = streams.Serialize(collection)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
case page && !onlyOtherAccountsSet:
// scenario 2
// get the collection
collection, err := p.tc.StatusToASRepliesCollection(ctx, status, onlyOtherAccounts)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
// but only return the first page
data, err = streams.Serialize(collection.GetActivityStreamsFirst().GetActivityStreamsCollectionPage())
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
default:
// scenario 3
// get immediate children
replies, err := p.state.DB.GetStatusChildren(ctx, status, true, minID)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
// filter children and extract URIs
replyURIs := map[string]*url.URL{}
for _, r := range replies {
// only show public or unlocked statuses as replies
if r.Visibility != gtsmodel.VisibilityPublic && r.Visibility != gtsmodel.VisibilityUnlocked {
continue
}
// respect onlyOtherAccounts parameter
if onlyOtherAccounts && r.AccountID == requestedAccount.ID {
continue
}
// only show replies that the status owner can see
visibleToStatusOwner, err := p.filter.StatusVisible(ctx, r, requestedAccount)
if err != nil || !visibleToStatusOwner {
continue
}
// only show replies that the requester can see
visibleToRequester, err := p.filter.StatusVisible(ctx, r, requestingAccount)
if err != nil || !visibleToRequester {
continue
}
rURI, err := url.Parse(r.URI)
if err != nil {
continue
}
replyURIs[r.ID] = rURI
}
repliesPage, err := p.tc.StatusURIsToASRepliesPage(ctx, status, onlyOtherAccounts, minID, replyURIs)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
data, err = streams.Serialize(repliesPage)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
}
return data, nil
}
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