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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 text
import (
"errors"
"strings"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/id"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/uris"
)
// replaceMention takes a string in the form @username@domain.com or @localusername
func (r *customRenderer) replaceMention(text string) string {
mention, err := r.parseMention(r.ctx, text, r.accountID, r.statusID)
if err != nil {
log.Errorf(r.ctx, "error parsing mention %s from status: %s", text, err)
return text
}
if r.statusID != "" {
if err := r.f.db.PutMention(r.ctx, mention); err != nil {
log.Errorf(r.ctx, "error putting mention in db: %s", err)
return text
}
}
// only append if it's not been listed yet
listed := false
for _, m := range r.result.Mentions {
if mention.ID == m.ID {
listed = true
break
}
}
if !listed {
r.result.Mentions = append(r.result.Mentions, mention)
}
if mention.TargetAccount == nil {
// Fetch mention target account if not yet populated.
mention.TargetAccount, err = r.f.db.GetAccountByID(
gtscontext.SetBarebones(r.ctx),
mention.TargetAccountID,
)
if err != nil {
log.Errorf(r.ctx, "error populating mention target account: %v", err)
return text
}
}
// The mention's target is our target
targetAccount := mention.TargetAccount
var b strings.Builder
// replace the mention with the formatted mention content
// <span class="h-card"><a href="targetAccount.URL" class="u-url mention">@<span>targetAccount.Username</span></a></span>
b.WriteString(`<span class="h-card"><a href="`)
b.WriteString(targetAccount.URL)
b.WriteString(`" class="u-url mention">@<span>`)
b.WriteString(targetAccount.Username)
b.WriteString(`</span></a></span>`)
return b.String()
}
// replaceHashtag takes a string in the form #SomeHashtag, and will normalize
// it before adding it to the db (or just getting it from the db if it already
// exists) and turning it into HTML.
func (r *customRenderer) replaceHashtag(text string) string {
normalized, ok := NormalizeHashtag(text)
if !ok {
// Not a valid hashtag.
return text
}
tag, err := r.getOrCreateHashtag(normalized)
if err != nil {
log.Errorf(r.ctx, "error generating hashtags from status: %s", err)
return text
}
// Append tag to result if not done already.
//
// This prevents multiple uses of a tag in
// the same status generating multiple
// entries for the same tag in result.
func() {
for _, t := range r.result.Tags {
if tag.ID == t.ID {
// Already appended.
return
}
}
// Not appended yet.
r.result.Tags = append(r.result.Tags, tag)
}()
// Replace tag with the formatted tag content, eg. `#SomeHashtag` becomes:
// `<a href="https://example.org/tags/somehashtag" class="mention hashtag" rel="tag">#<span>SomeHashtag</span></a>`
var b strings.Builder
b.WriteString(`<a href="`)
b.WriteString(uris.GenerateURIForTag(normalized))
b.WriteString(`" class="mention hashtag" rel="tag">#<span>`)
b.WriteString(normalized)
b.WriteString(`</span></a>`)
return b.String()
}
func (r *customRenderer) getOrCreateHashtag(name string) (*gtsmodel.Tag, error) {
var (
tag *gtsmodel.Tag
err error
)
// Check if we have a tag with this name already.
tag, err = r.f.db.GetTagByName(r.ctx, name)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return nil, gtserror.Newf("db error getting tag %s: %w", name, err)
}
if tag != nil {
// We had it!
return tag, nil
}
// We didn't have a tag with
// this name, create one.
tag = >smodel.Tag{
ID: id.NewULID(),
Name: name,
}
if err = r.f.db.PutTag(r.ctx, tag); err != nil {
return nil, gtserror.Newf("db error putting new tag %s: %w", name, err)
}
return tag, nil
}
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