// 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 . package tags import ( "context" "errors" 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/id" ) // Follow follows the tag with the given name as the given account. // If there is no tag with that name, it creates a tag. func (p *Processor) Follow( ctx context.Context, account *gtsmodel.Account, name string, ) (*apimodel.Tag, gtserror.WithCode) { // Try to get an existing tag with that name. tag, err := p.state.DB.GetTagByName(ctx, name) if err != nil && !errors.Is(err, db.ErrNoEntries) { return nil, gtserror.NewErrorInternalError( gtserror.Newf("DB error getting tag with name %s: %w", name, err), ) } // If there is no such tag, create it. if tag == nil { tag = >smodel.Tag{ ID: id.NewULID(), Name: name, } if err := p.state.DB.PutTag(ctx, tag); err != nil { return nil, gtserror.NewErrorInternalError( gtserror.Newf("DB error creating tag with name %s: %w", name, err), ) } } // Follow the tag. if err := p.state.DB.PutFollowedTag(ctx, account.ID, tag.ID); err != nil { return nil, gtserror.NewErrorInternalError( gtserror.Newf("DB error following tag %s: %w", tag.ID, err), ) } return p.apiTag(ctx, tag, true) }