diff options
Diffstat (limited to 'lib/posts.php')
| -rw-r--r-- | lib/posts.php | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/lib/posts.php b/lib/posts.php new file mode 100644 index 0000000..bf8d149 --- /dev/null +++ b/lib/posts.php @@ -0,0 +1,188 @@ +<?php + +class posts { + + public static function getPostsCount(bool $include_hidden = false): int { + $db = getDb(); + $sql = "SELECT COUNT(*) FROM posts"; + if (!$include_hidden) { + $sql .= " WHERE visible=1"; + } + return (int)$db->result($db->query($sql)); + } + + public static function getPostsCountByTagId(int $tag_id, bool $include_hidden = false): int { + $db = getDb(); + if ($include_hidden) { + $sql = "SELECT COUNT(*) FROM posts_tags WHERE tag_id=?"; + } else { + $sql = "SELECT COUNT(*) FROM posts_tags + LEFT JOIN posts ON posts.id=posts_tags.post_id + WHERE posts_tags.tag_id=? AND posts.visible=1"; + } + return (int)$db->result($db->query($sql, $tag_id)); + } + + public static function getPosts(int $offset = 0, int $count = -1, bool $include_hidden = false): array { + $db = getDb(); + $sql = "SELECT * FROM posts"; + if (!$include_hidden) + $sql .= " WHERE visible=1"; + $sql .= " ORDER BY ts DESC"; + if ($offset != 0 && $count != -1) + $sql .= "LIMIT $offset, $count"; + $q = $db->query($sql); + return array_map('Post::create_instance', $db->fetchAll($q)); + } + + /** + * @return Post[] + */ + public static function getPostsByTagId(int $tag_id, bool $include_hidden = false): array { + $db = getDb(); + $sql = "SELECT posts.* FROM posts_tags + LEFT JOIN posts ON posts.id=posts_tags.post_id + WHERE posts_tags.tag_id=?"; + if (!$include_hidden) + $sql .= " AND posts.visible=1"; + $sql .= " ORDER BY posts.ts DESC"; + $q = $db->query($sql, $tag_id); + return array_map('Post::create_instance', $db->fetchAll($q)); + } + + public static function add(array $data = []): int|bool { + $db = getDb(); + + $html = \markup::markdownToHtml($data['md']); + $text = \markup::htmlToText($html); + + $data += [ + 'ts' => time(), + 'html' => $html, + 'text' => $text, + ]; + + if (!$db->insert('posts', $data)) + return false; + + $id = $db->insertId(); + + $post = posts::get($id); + $post->updateImagePreviews(); + + return $id; + } + + public static function delete(Post $post): void { + $tags = $post->getTags(); + + $db = getDb(); + $db->query("DELETE FROM posts WHERE id=?", $post->id); + $db->query("DELETE FROM posts_tags WHERE post_id=?", $post->id); + + foreach ($tags as $tag) + self::recountPostsWithTag($tag->id); + } + + public static function getTagIds(array $tags): array { + $found_tags = []; + $map = []; + + $db = getDb(); + $q = $db->query("SELECT id, tag FROM tags + WHERE tag IN ('".implode("','", array_map(function($tag) use ($db) { return $db->escape($tag); }, $tags))."')"); + while ($row = $db->fetch($q)) { + $found_tags[] = $row['tag']; + $map[$row['tag']] = (int)$row['id']; + } + + $notfound_tags = array_diff($tags, $found_tags); + if (!empty($notfound_tags)) { + foreach ($notfound_tags as $tag) { + $db->insert('tags', ['tag' => $tag]); + $map[$tag] = $db->insertId(); + } + } + + return $map; + } + + public static function get(int $id): ?Post { + $db = getDb(); + $q = $db->query("SELECT * FROM posts WHERE id=?", $id); + return $db->numRows($q) ? new Post($db->fetch($q)) : null; + } + + public static function getPostByName(string $short_name): ?Post { + $db = getDb(); + $q = $db->query("SELECT * FROM posts WHERE short_name=?", $short_name); + return $db->numRows($q) ? new Post($db->fetch($q)) : null; + } + + public static function getPostsById(array $ids, bool $flat = false): array { + if (empty($ids)) { + return []; + } + + $db = getDb(); + $posts = array_fill_keys($ids, null); + + $q = $db->query("SELECT * FROM posts WHERE id IN(".implode(',', $ids).")"); + + while ($row = $db->fetch($q)) { + $posts[(int)$row['id']] = new Post($row); + } + + if ($flat) { + $list = []; + foreach ($ids as $id) { + $list[] = $posts[$id]; + } + unset($posts); + return $list; + } + + return $posts; + } + + public static function getAllTags(bool $include_hidden = false): array { + $db = getDb(); + $field = $include_hidden ? 'posts_count' : 'visible_posts_count'; + $q = $db->query("SELECT * FROM tags WHERE $field > 0 ORDER BY $field DESC, tag"); + return array_map('Tag::create_instance', $db->fetchAll($q)); + } + + public static function getTag(string $tag): ?Tag { + $db = getDb(); + $q = $db->query("SELECT * FROM tags WHERE tag=?", $tag); + return $db->numRows($q) ? new Tag($db->fetch($q)) : null; + } + + /** + * @param int $tag_id + */ + public static function recountPostsWithTag($tag_id) { + $db = getDb(); + $count = $db->result($db->query("SELECT COUNT(*) FROM posts_tags WHERE tag_id=?", $tag_id)); + $vis_count = $db->result($db->query("SELECT COUNT(*) FROM posts_tags + LEFT JOIN posts ON posts.id=posts_tags.post_id + WHERE posts_tags.tag_id=? AND posts.visible=1", $tag_id)); + $db->query("UPDATE tags SET posts_count=?, visible_posts_count=? WHERE id=?", + $count, $vis_count, $tag_id); + } + + public static function splitStringToTags(string $tags): array { + $tags = trim($tags); + if ($tags == '') { + return []; + } + + $tags = preg_split('/,\s+/', $tags); + $tags = array_filter($tags, function($tag) { return trim($tag) != ''; }); + $tags = array_map('trim', $tags); + $tags = array_map('mb_strtolower', $tags); + + return $tags; + } + +} |