tag_string, $tag)) return true; } return false; } function fetch_post(): ?stdClass { $context = stream_context_create(['http' => [ 'user_agent' => 'pawpub yuribot ' ]]); $response = file_get_contents(API_BASE . '/posts.json?tags=' . QUERY . '&limit=1', context: $context); if (!$response) return null; $posts = json_decode($response); if (!$posts) return null; if (has_banned_tags($posts[0])) return null; return $posts[0]; } function fetch_specific_post(int $id): ?stdClass { $context = stream_context_create(['http' => [ 'user_agent' => 'pawpub yuribot ' ]]); $response = file_get_contents(API_BASE . "/posts/$id.json", context: $context); if (!$response) return null; $post = json_decode($response); if (!$post) return null; if (has_banned_tags($post)) return null; return $post; } function fetch_post_from_db(array $myPosts, int $id): ?stdClass { $uri = SELF_BASE . '?id=' . $id; foreach ($myPosts as $post) { if ($post->{'self'} == $uri) return $post; } return null; } function format_tags(string $tags): string { // "tag_1 tag_2" -> "tag 1, tag 2" return str_replace('_', ' ', str_replace(' ', ', ', $tags)); } function make_link(string $label, string $href, bool $markdown): string { if ($markdown) { return "[$label]($href)"; } else { return "$label: $href"; } } function post_to_content(stdClass $post, bool $markdown): string { $artists = format_tags($post->tag_string_artist); $characters = format_tags($post->tag_string_character); $media = format_tags($post->tag_string_copyright); $source = make_link('Source', $post->source, $markdown); $danbooru = make_link('Danbooru post', API_BASE . "/posts/$post->id", $markdown); return <<media_asset->variants[2]; return [ 'type' => 'note', 'self' => SELF_BASE . "?id=$post->id", 'created' => (new DateTimeImmutable)->format(DATE_ISO8601), 'author' => SELF_BASE, 'plainContent' => post_to_content($post, false), 'formattedContent' => [ 'text/markdown' => post_to_content($post, true) ], 'language' => 'en', 'privacy' => ['scope' => 'public', 'indexable' => false], 'attachments' => [[ 'type' => "image/$file->file_ext", 'href' => $file->url, 'description' => 'Danbooru tags: ' . format_tags($post->tag_string_general) ]] ]; } function get_my_posts_internal(): array { if (is_readable(DB_FILE)) { return json_decode(file_get_contents(DB_FILE)) ?? []; } return []; } function get_my_posts(): array { $posts = get_my_posts_internal(); if (needs_new_post($posts)) { while (!isset($newPost)) { $newPost = fetch_post(); sleep(0.25); // avoid ratelimit } $posts[] = post_to_ppnote($newPost); save_my_posts($posts); } return $posts; } function save_my_posts(array &$posts) { while (count($posts) > 12) { array_shift($posts); } file_put_contents(DB_FILE, json_encode($posts)); } function needs_new_post(array &$posts) { if (count($posts) == 0) return true; $lastDate = new DateTimeImmutable(array_slice($posts, -1)[0]->created); return (new DateTimeImmutable)->getTimestamp() - $lastDate->getTimestamp() > (60*60 /* 1 hour */); } // ---- main --------------------- header('Content-Type: application/json'); header('Cache-Control: no-cache'); if (isset($_GET['id'])) { $myPosts = get_my_posts(); header('Cache-Control: max-age=36000'); echo json_encode(fetch_post_from_db($myPosts, $_GET['id'])); } elseif (isset($_GET['basicFeed'])) { $myPosts = array_slice(get_my_posts(), -5); echo json_encode([ 'page' => 1, 'totalPages' => 1, 'totalItems' => count($myPosts), 'items' => array_map(fn($post) => $post->{'self'}, $myPosts) ]); } elseif (isset($_GET['fullFeed'])) { $myPosts = array_slice(get_my_posts(), -5); echo json_encode([ 'page' => 1, 'totalPages' => 1, 'totalItems' => count($myPosts), 'items' => $myPosts ]); } else { header('Cache-Control: max-age=36000'); echo json_encode([ 'type' => 'actor', 'self' => SELF_BASE, 'created' => '2025-05-11T21:44:00+01:00', 'handle' => 'yuribot', 'displayName' => 'yuri bot', 'bio' => "posts random sfw yuri every hour\nposts are only served for 12 hours after publishing\n\navatar source: https://danbooru.donmai.us/posts/6675581", 'avatar' => 'https://tools.entities.org.uk/pawpub-experiments/yuribot-avatar.png', 'automated' => true, 'endpoints' => [ 'basicFeed' => SELF_BASE . '?basicFeed=1', 'fullFeed' => SELF_BASE . '?fullFeed=1' ] ]); }