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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"
"errors"
"net/url"
"code.superseriousbusiness.org/activity/streams/vocab"
"code.superseriousbusiness.org/gotosocial/internal/config"
"code.superseriousbusiness.org/gotosocial/internal/gtscontext"
"code.superseriousbusiness.org/gotosocial/internal/gtserror"
"code.superseriousbusiness.org/gotosocial/internal/log"
"code.superseriousbusiness.org/gotosocial/internal/uris"
)
var ErrNotImplemented = errors.New("not implemented")
// Get returns the database entry for the specified id.
//
// The library makes this call only after acquiring a lock first.
//
// Implementation notes: in GoToSocial this function should *only*
// be used for internal dereference calls. Everything coming from the
// outside goes via the handlers defined in internal/api/activitypub.
//
// Normally with go-fed this function would get used in lots of
// places for the side effect callback handlers, but since we override
// everything and handle side effects ourselves, the only two places
// this function actually ends up getting called are:
//
// - vendor/code.superseriousbusiness.org/activity/pub/side_effect_actor.go
// to get outbox actor inside the prepare function.
// - internal/transport/controller.go to try to shortcut deref a local item.
//
// It may be useful in future to add more matching here so that more
// stuff can be shortcutted by the dereferencer, saving HTTP calls.
func (f *DB) Get(ctx context.Context, id *url.URL) (value vocab.Type, err error) {
log.DebugKV(ctx, "id", id)
// Ensure our host, for safety.
if id.Host != config.GetHost() {
return nil, gtserror.Newf("%s was not for our host", id)
}
if username, _ := uris.ParseUserPath(id); username != "" {
acct, err := f.state.DB.GetAccountByUsernameDomain(
gtscontext.SetBarebones(ctx),
username,
"",
)
if err != nil {
return nil, err
}
return f.converter.AccountToAS(ctx, acct)
} else if _, statusID, _ := uris.ParseStatusesPath(id); statusID != "" {
status, err := f.state.DB.GetStatusByID(ctx, statusID)
if err != nil {
return nil, err
}
return f.converter.StatusToAS(ctx, status)
} else if username, _ := uris.ParseFollowersPath(id); username != "" {
acct, err := f.state.DB.GetAccountByUsernameDomain(
gtscontext.SetBarebones(ctx),
username,
"",
)
if err != nil {
return nil, err
}
acctURI, err := url.Parse(acct.URI)
if err != nil {
return nil, err
}
return f.Followers(ctx, acctURI)
} else if username, _ := uris.ParseFollowingPath(id); username != "" {
acct, err := f.state.DB.GetAccountByUsernameDomain(
gtscontext.SetBarebones(ctx),
username,
"",
)
if err != nil {
return nil, err
}
acctURI, err := url.Parse(acct.URI)
if err != nil {
return nil, err
}
return f.Following(ctx, acctURI)
} else if uris.IsAcceptsPath(id) {
return f.GetAccept(ctx, id)
}
// Nothing found, the caller
// will have to deal with this.
return nil, ErrNotImplemented
}
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