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// 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 federatingdb
import (
"context"
"fmt"
"net/url"
"codeberg.org/gruf/go-kv"
"github.com/superseriousbusiness/activity/streams/vocab"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/log"
)
// Following obtains the Following Collection for an actor with the
// given id.
//
// If modified, the library will then call Update.
//
// The library makes this call only after acquiring a lock first.
func (f *federatingDB) Following(ctx context.Context, actorIRI *url.URL) (following vocab.ActivityStreamsCollection, err error) {
l := log.WithContext(ctx).
WithFields(kv.Fields{
{"id", actorIRI},
}...)
l.Debug("entering Following")
acct, err := f.getAccountForIRI(ctx, actorIRI)
if err != nil {
return nil, err
}
acctFollowing, err := f.state.DB.GetAccountFollows(ctx, acct.ID)
if err != nil {
return nil, fmt.Errorf("Following: db error getting following for account id %s: %s", acct.ID, err)
}
iris := []*url.URL{}
for _, follow := range acctFollowing {
if follow.TargetAccount == nil {
a, err := f.state.DB.GetAccountByID(ctx, follow.TargetAccountID)
if err != nil {
errWrapped := fmt.Errorf("Following: db error getting account id %s: %s", follow.TargetAccountID, err)
if err == db.ErrNoEntries {
// no entry for this account id so it's probably been deleted and we haven't caught up yet
l.Error(errWrapped)
continue
} else {
// proper error
return nil, errWrapped
}
}
follow.TargetAccount = a
}
u, err := url.Parse(follow.TargetAccount.URI)
if err != nil {
return nil, err
}
iris = append(iris, u)
}
return f.collectIRIs(ctx, iris)
}
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