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<?php
class Post extends Model {
const DB_TABLE = 'posts';
public int $id;
public string $title;
public string $md;
public string $html;
public string $tocHtml;
public string $text;
public int $ts;
public int $updateTs;
public bool $visible;
public bool $toc;
public string $shortName;
public function edit(array $data) {
$cur_ts = time();
if (!$this->visible && $data['visible'])
$data['ts'] = $cur_ts;
$data['update_ts'] = $cur_ts;
if ($data['md'] != $this->md) {
$data['html'] = markup::markdownToHtml($data['md']);
$data['text'] = markup::htmlToText($data['html']);
}
if ((isset($data['toc']) && $data['toc']) || $this->toc) {
$data['toc_html'] = markup::toc($data['md']);
}
parent::edit($data);
$this->updateImagePreviews();
}
public function updateHtml() {
$html = markup::markdownToHtml($this->md);
$this->html = $html;
getDb()->query("UPDATE posts SET html=? WHERE id=?", $html, $this->id);
}
public function updateText() {
$html = markup::markdownToHtml($this->md);
$text = markup::htmlToText($html);
$this->text = $text;
getDb()->query("UPDATE posts SET text=? WHERE id=?", $text, $this->id);
}
public function getDescriptionPreview(int $len): string {
if (mb_strlen($this->text) >= $len)
return mb_substr($this->text, 0, $len-3).'...';
return $this->text;
}
public function getFirstImage(): ?Upload {
if (!preg_match('/\{image:([\w]{8})/', $this->md, $match))
return null;
return uploads::getByRandomId($match[1]);
}
public function getUrl(): string {
return $this->shortName != '' ? "/{$this->shortName}/" : "/{$this->id}/";
}
public function getDate(): string {
return date('j M', $this->ts);
}
public function getYear(): int {
return (int)date('Y', $this->ts);
}
public function getFullDate(): string {
return date('j F Y', $this->ts);
}
public function getUpdateDate(): string {
return date('j M', $this->updateTs);
}
public function getFullUpdateDate(): string {
return date('j F Y', $this->updateTs);
}
public function getHtml(bool $is_retina, string $theme): string {
$html = $this->html;
$html = markup::htmlImagesFix($html, $is_retina, $theme);
return $html;
}
public function getToc(): ?string {
return $this->toc ? $this->tocHtml : null;
}
public function isUpdated(): bool {
return $this->updateTs && $this->updateTs != $this->ts;
}
/**
* @return Tag[]
*/
public function getTags(): array {
$db = getDb();
$q = $db->query("SELECT tags.* FROM posts_tags
LEFT JOIN tags ON tags.id=posts_tags.tag_id
WHERE posts_tags.post_id=?
ORDER BY posts_tags.tag_id", $this->id);
return array_map('Tag::create_instance', $db->fetchAll($q));
}
/**
* @return int[]
*/
public function getTagIds(): array {
$ids = [];
$db = getDb();
$q = $db->query("SELECT tag_id FROM posts_tags WHERE post_id=? ORDER BY tag_id", $this->id);
while ($row = $db->fetch($q)) {
$ids[] = (int)$row['tag_id'];
}
return $ids;
}
public function setTagIds(array $new_tag_ids) {
$cur_tag_ids = $this->getTagIds();
$add_tag_ids = array_diff($new_tag_ids, $cur_tag_ids);
$rm_tag_ids = array_diff($cur_tag_ids, $new_tag_ids);
$db = getDb();
if (!empty($add_tag_ids)) {
$rows = [];
foreach ($add_tag_ids as $id)
$rows[] = ['post_id' => $this->id, 'tag_id' => $id];
$db->multipleInsert('posts_tags', $rows);
}
if (!empty($rm_tag_ids))
$db->query("DELETE FROM posts_tags WHERE post_id=? AND tag_id IN(".implode(',', $rm_tag_ids).")", $this->id);
$upd_tag_ids = array_merge($new_tag_ids, $rm_tag_ids);
$upd_tag_ids = array_unique($upd_tag_ids);
foreach ($upd_tag_ids as $id)
posts::recountPostsWithTag($id);
}
/**
* @param bool $update Whether to overwrite preview if already exists
* @return int
*/
public function updateImagePreviews(bool $update = false): int {
$images = [];
if (!preg_match_all('/\{image:([\w]{8}),(.*?)}/', $this->md, $matches))
return 0;
for ($i = 0; $i < count($matches[0]); $i++) {
$id = $matches[1][$i];
$w = $h = null;
$opts = explode(',', $matches[2][$i]);
foreach ($opts as $opt) {
if (strpos($opt, '=') !== false) {
list($k, $v) = explode('=', $opt);
if ($k == 'w')
$w = (int)$v;
else if ($k == 'h')
$h = (int)$v;
}
}
$images[$id][] = [$w, $h];
}
if (empty($images))
return 0;
$images_affected = 0;
$uploads = uploads::getUploadsByRandomId(array_keys($images), true);
foreach ($uploads as $u) {
foreach ($images[$u->randomId] as $s) {
list($w, $h) = $s;
list($w, $h) = $u->getImagePreviewSize($w, $h);
if ($u->createImagePreview($w, $h, $update, $u->imageMayHaveAlphaChannel()))
$images_affected++;
}
}
return $images_affected;
}
}
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