mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-10-19 16:55:29 +02:00
178 lines
5.2 KiB
Go
178 lines
5.2 KiB
Go
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/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package typeutils
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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"github.com/gorilla/feeds"
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"github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/config"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/text"
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)
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const (
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rssMaxTitleChars = 128
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rssDescriptionMaxChars = 256
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)
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func (c *converter) StatusToRSSItem(ctx context.Context, s *gtsmodel.Status) (*feeds.Item, error) {
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// see https://cyber.harvard.edu/rss/rss.html
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// Title -- The title of the item.
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// example: Venice Film Festival Tries to Quit Sinking
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var title string
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if s.ContentWarning != "" {
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title = trimTo(s.ContentWarning, rssMaxTitleChars)
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} else {
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title = trimTo(s.Text, rssMaxTitleChars)
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}
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// Link -- The URL of the item.
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// example: http://nytimes.com/2004/12/07FEST.html
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link := &feeds.Link{
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Href: s.URL,
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}
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// Author -- Email address of the author of the item.
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// example: oprah\@oxygen.net
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if s.Account == nil {
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a, err := c.db.GetAccountByID(ctx, s.AccountID)
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if err != nil {
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return nil, fmt.Errorf("error getting status author: %s", err)
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}
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s.Account = a
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}
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authorName := "@" + s.Account.Username + "@" + config.GetAccountDomain()
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author := &feeds.Author{
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Name: authorName,
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}
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// Source -- The RSS channel that the item came from.
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source := &feeds.Link{
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Href: s.Account.URL + "/feed.rss",
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}
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// Description -- The item synopsis.
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// example: Some of the most heated chatter at the Venice Film Festival this week was about the way that the arrival of the stars at the Palazzo del Cinema was being staged.
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descriptionBuilder := strings.Builder{}
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descriptionBuilder.WriteString(authorName + " ")
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attachmentCount := len(s.Attachments)
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if len(s.AttachmentIDs) > attachmentCount {
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attachmentCount = len(s.AttachmentIDs)
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}
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switch {
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case attachmentCount > 1:
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descriptionBuilder.WriteString(fmt.Sprintf("posted [%d] attachments", attachmentCount))
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case attachmentCount == 1:
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descriptionBuilder.WriteString("posted 1 attachment")
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default:
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descriptionBuilder.WriteString("made a new post")
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}
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if s.Text != "" {
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descriptionBuilder.WriteString(": \"")
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descriptionBuilder.WriteString(s.Text)
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descriptionBuilder.WriteString("\"")
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}
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description := trimTo(descriptionBuilder.String(), rssDescriptionMaxChars)
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// ID -- A string that uniquely identifies the item.
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// example: http://inessential.com/2002/09/01.php#a2
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id := s.URL
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// Enclosure -- Describes a media object that is attached to the item.
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enclosure := &feeds.Enclosure{}
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// get first attachment if present
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var attachment *gtsmodel.MediaAttachment
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if len(s.Attachments) > 0 {
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attachment = s.Attachments[0]
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} else if len(s.AttachmentIDs) > 0 {
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a, err := c.db.GetAttachmentByID(ctx, s.AttachmentIDs[0])
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if err == nil {
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attachment = a
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}
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}
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if attachment != nil {
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enclosure.Type = attachment.File.ContentType
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enclosure.Length = strconv.Itoa(attachment.File.FileSize)
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enclosure.Url = attachment.URL
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}
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// Content
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apiEmojis := []model.Emoji{}
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// the status might already have some gts emojis on it if it's not been pulled directly from the database
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// if so, we can directly convert the gts emojis into api ones
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if s.Emojis != nil {
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for _, gtsEmoji := range s.Emojis {
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apiEmoji, err := c.EmojiToAPIEmoji(ctx, gtsEmoji)
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if err != nil {
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log.Errorf("error converting emoji with id %s: %s", gtsEmoji.ID, err)
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continue
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}
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apiEmojis = append(apiEmojis, apiEmoji)
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}
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// the status doesn't have gts emojis on it, but it does have emoji IDs
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// in this case, we need to pull the gts emojis from the db to convert them into api ones
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} else {
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for _, e := range s.EmojiIDs {
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gtsEmoji := >smodel.Emoji{}
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if err := c.db.GetByID(ctx, e, gtsEmoji); err != nil {
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log.Errorf("error getting emoji with id %s: %s", e, err)
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continue
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}
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apiEmoji, err := c.EmojiToAPIEmoji(ctx, gtsEmoji)
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if err != nil {
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log.Errorf("error converting emoji with id %s: %s", gtsEmoji.ID, err)
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continue
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}
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apiEmojis = append(apiEmojis, apiEmoji)
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}
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}
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content := text.Emojify(apiEmojis, s.Content)
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return &feeds.Item{
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Title: title,
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Link: link,
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Author: author,
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Source: source,
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Description: description,
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Id: id,
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Updated: s.UpdatedAt,
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Created: s.CreatedAt,
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Enclosure: enclosure,
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Content: content,
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}, nil
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}
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func trimTo(in string, to int) string {
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if len(in) <= to {
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return in
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}
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return in[:to-3] + "..."
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}
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