Files
hyprcrd/public/plugins/chat/backend.php
T
thandClaude Opus 4.6 6aa555cc6a fix(chat): group-message FK violation + receipt-cursor stall
Group inserts were using recipient_id=0 as a "no recipient" sentinel,
which fails the tenants FK (foreign_keys is ON) and 500s on every
group send. Use the sender's own id as the placeholder instead;
group GET queries already key off room_uid so there's no self-message
artefact from the value.

Also exclude group rows from /api/chat/sent so the client's
last_sent_relay_id cursor doesn't stall on group sends that never
reach seen=1 (group receipts aren't tracked in v1).

Client-side: surface a clearer error when a room create hits a 404
on the relay — almost always means the relay is running pre-group
code and needs a restart.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-15 20:57:18 +02:00

702 lines
32 KiB
PHP

<?php
/**
* Chat Plugin: backend.
*
* Local message cache + thin proxy over the relays /api/chat routes.
* The plugin keeps a local SQLite table so the UI can render conversation
* history without re-polling on every open. Reuses the existing relay_url /
* relay_username / relay_key settings (no new credentials).
*
* Routes:
* GET /api/chat/conversations → peer list with last msg + unread
* GET /api/chat/messages?peer=X → all messages with one peer (asc)
* POST /api/chat/send {peer,body} → encrypts + pushes via relay, stores local
* POST /api/chat/poll → pulls new from relay, returns count
* POST /api/chat/read {peer} → mark all incoming from peer as read
* GET /api/chat/recipients → proxy of relays /api/tenants
*/
(function () {
$db = Database::connect();
$db->exec("
CREATE TABLE IF NOT EXISTS chat_messages (
id INTEGER PRIMARY KEY AUTOINCREMENT,
peer TEXT NOT NULL,
direction TEXT NOT NULL CHECK(direction IN ('in','out')),
body TEXT NOT NULL,
relay_id INTEGER,
sent_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
is_read INTEGER NOT NULL DEFAULT 0
)
");
$db->exec("CREATE INDEX IF NOT EXISTS idx_chat_peer ON chat_messages(peer, sent_at)");
$db->exec("CREATE UNIQUE INDEX IF NOT EXISTS idx_chat_relay_id ON chat_messages(relay_id) WHERE relay_id IS NOT NULL");
// Read receipts for outgoing messages: `delivered` = recipient polled
// (single check), `seen` = recipient opened the thread (double check).
// Both filled in via /api/chat/sent receipt-poll on the relay side.
$cols = $db->query("PRAGMA table_info(chat_messages)")->fetchAll();
$colNames = array_column($cols, 'name');
if (!in_array('delivered', $colNames)) {
$db->exec("ALTER TABLE chat_messages ADD COLUMN delivered INTEGER NOT NULL DEFAULT 0");
}
if (!in_array('seen', $colNames)) {
$db->exec("ALTER TABLE chat_messages ADD COLUMN seen INTEGER NOT NULL DEFAULT 0");
}
// Group chat: `room_uid` set → message belongs to a room (group
// thread), and `peer` holds the author's username (always — 1:1
// messages use peer for the other party, group messages reuse the
// column for the sender). NULL room_uid = classic 1:1.
if (!in_array('room_uid', $colNames)) {
$db->exec("ALTER TABLE chat_messages ADD COLUMN room_uid TEXT");
$db->exec("CREATE INDEX IF NOT EXISTS idx_chat_room ON chat_messages(room_uid, id)");
}
// Chat rooms + membership, mirrored from the relay on poll. The
// client is the read-through cache; relay remains the source of
// truth so a second device can join a room just by polling.
$db->exec("
CREATE TABLE IF NOT EXISTS chat_rooms (
uid TEXT PRIMARY KEY,
name TEXT NOT NULL,
owner_username TEXT NOT NULL,
created_at TEXT NOT NULL,
synced_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
)
");
$db->exec("
CREATE TABLE IF NOT EXISTS chat_room_members (
room_uid TEXT NOT NULL,
username TEXT NOT NULL,
PRIMARY KEY (room_uid, username)
)
");
// Per-thread settings. Currently: `disposable` flag for 1:1 threads
// — when true, the relay drops the messages after the 7-day window
// instead of keeping them in the long-term store. Rooms are always
// persistent (enforced relay-side), so this only applies to peers.
$db->exec("
CREATE TABLE IF NOT EXISTS chat_thread_settings (
peer TEXT PRIMARY KEY,
disposable INTEGER NOT NULL DEFAULT 0
)
");
// Track the largest relay msg id we've ever seen (so the next poll uses since=that)
$db->exec("
CREATE TABLE IF NOT EXISTS chat_state (
key TEXT PRIMARY KEY,
value TEXT
)
");
})();
function chatJson($data, int $code = 200): void {
http_response_code($code);
header('Content-Type: application/json');
echo json_encode($data);
exit;
}
function chatRelaySettings(): array {
$db = Database::connect();
return [
'url' => $db->query("SELECT value FROM settings WHERE key = 'relay_url'")->fetchColumn() ?: '',
'user' => $db->query("SELECT value FROM settings WHERE key = 'relay_username'")->fetchColumn() ?: '',
'key' => $db->query("SELECT value FROM settings WHERE key = 'relay_key'")->fetchColumn() ?: '',
];
}
/** Same envelope format as the existing relay sync (HYPRCRD-RELAY-V1). */
function chatEncrypt(string $plain, string $relayKey): string {
$encKey = substr(hash('sha256', $relayKey), 0, 32);
$iv = random_bytes(16);
$cipher = openssl_encrypt($plain, 'aes-256-cbc', $encKey, OPENSSL_RAW_DATA, $iv);
return "HYPRCRD-RELAY-V1\n" . base64_encode($iv . $cipher);
}
function chatDecrypt(string $envelope, string $relayKey): string {
if (!str_starts_with($envelope, 'HYPRCRD-RELAY-V1')) return '';
$b64 = trim(substr($envelope, strlen('HYPRCRD-RELAY-V1') + 1));
$raw = base64_decode($b64);
if (!$raw || strlen($raw) < 17) return '';
$encKey = substr(hash('sha256', $relayKey), 0, 32);
$iv = substr($raw, 0, 16);
$cipher = substr($raw, 16);
$result = openssl_decrypt($cipher, 'aes-256-cbc', $encKey, OPENSSL_RAW_DATA, $iv);
return $result !== false ? $result : '';
}
function chatGetState(string $key, $default = null) {
$db = Database::connect();
$stmt = $db->prepare('SELECT value FROM chat_state WHERE key = :k');
$stmt->execute(['k' => $key]);
$v = $stmt->fetchColumn();
return $v === false ? $default : $v;
}
function chatSetState(string $key, $value): void {
$db = Database::connect();
$db->prepare('INSERT OR REPLACE INTO chat_state (key, value) VALUES (:k, :v)')
->execute(['k' => $key, 'v' => (string)$value]);
}
PluginManager::instance()->onApiRoute(function (string $route, string $method) {
if ($route === '/api/chat/conversations' && $method === 'GET') {
$db = Database::connect();
// 1:1 threads — one row per peer (room_uid IS NULL).
$oneOnOne = $db->query("
SELECT
'peer' AS kind,
peer AS key,
peer AS label,
MAX(sent_at) AS last_at,
(SELECT body FROM chat_messages c2 WHERE c2.peer = c1.peer AND c2.room_uid IS NULL ORDER BY id DESC LIMIT 1) AS last_body,
(SELECT direction FROM chat_messages c3 WHERE c3.peer = c1.peer AND c3.room_uid IS NULL ORDER BY id DESC LIMIT 1) AS last_direction,
SUM(CASE WHEN direction = 'in' AND is_read = 0 THEN 1 ELSE 0 END) AS unread
FROM chat_messages c1
WHERE room_uid IS NULL
GROUP BY peer
")->fetchAll();
// Group rooms — join rooms to their newest message (if any); rooms
// with no messages yet still render so the user can post there.
$rooms = $db->query("
SELECT
'room' AS kind,
r.uid AS key,
r.name AS label,
r.owner_username AS owner,
(SELECT MAX(sent_at) FROM chat_messages WHERE room_uid = r.uid) AS last_at,
(SELECT body FROM chat_messages WHERE room_uid = r.uid ORDER BY id DESC LIMIT 1) AS last_body,
(SELECT peer FROM chat_messages WHERE room_uid = r.uid ORDER BY id DESC LIMIT 1) AS last_author,
(SELECT COUNT(*) FROM chat_messages WHERE room_uid = r.uid AND direction = 'in' AND is_read = 0) AS unread
FROM chat_rooms r
")->fetchAll();
$rows = array_merge($oneOnOne, $rooms);
// Sort newest-first, nulls (empty rooms) to the bottom.
usort($rows, function ($a, $b) {
$al = $a['last_at'] ?? ''; $bl = $b['last_at'] ?? '';
if ($al === $bl) return 0;
if ($al === '') return 1;
if ($bl === '') return -1;
return strcmp($bl, $al);
});
$totalUnread = array_sum(array_map(fn($r) => (int)($r['unread'] ?? 0), $rows));
chatJson(['conversations' => $rows, 'total_unread' => $totalUnread]);
}
if ($route === '/api/chat/messages' && $method === 'GET') {
$peer = trim((string)($_GET['peer'] ?? ''));
$roomUid = trim((string)($_GET['room_uid'] ?? ''));
if ($peer === '' && $roomUid === '') chatJson(['error' => 'peer or room_uid required'], 400);
$db = Database::connect();
if ($roomUid !== '') {
// Group thread: return all messages for the room. `peer` is the
// author username; UI uses author === self to decide bubble
// alignment instead of the direction flag (direction is set
// from THIS device's perspective, so a message sent from
// another device comes in as direction='in' while peer==self).
$stmt = $db->prepare('SELECT id, peer, direction, body, sent_at, is_read, delivered, seen, room_uid FROM chat_messages WHERE room_uid = :r ORDER BY id ASC LIMIT 500');
$stmt->execute(['r' => $roomUid]);
} else {
$stmt = $db->prepare('SELECT id, peer, direction, body, sent_at, is_read, delivered, seen FROM chat_messages WHERE peer = :p AND room_uid IS NULL ORDER BY id ASC LIMIT 500');
$stmt->execute(['p' => $peer]);
}
chatJson(['messages' => $stmt->fetchAll()]);
}
if ($route === '/api/chat/send' && $method === 'POST') {
$input = json_decode(file_get_contents('php://input'), true) ?: [];
$peer = trim((string)($input['peer'] ?? ''));
$roomUid = trim((string)($input['room_uid'] ?? ''));
$body = (string)($input['body'] ?? '');
if ($body === '') chatJson(['error' => 'body required'], 400);
if ($peer === '' && $roomUid === '') chatJson(['error' => 'peer or room_uid required'], 400);
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) {
chatJson(['error' => 'relay not configured (set URL, username, and secret in settings)'], 400);
}
$db = Database::connect();
// Look up per-thread disposable flag (1:1 only; rooms are always
// persistent on the relay).
$disposable = 0;
if ($peer !== '') {
$stmt = $db->prepare('SELECT disposable FROM chat_thread_settings WHERE peer = :p');
$stmt->execute(['p' => $peer]);
$disposable = (int)($stmt->fetchColumn() ?: 0);
}
$envelope = chatEncrypt($body, $r['key']);
$payload = $roomUid !== ''
? ['room_uid' => $roomUid, 'body' => $envelope]
: ['recipient' => $peer, 'body' => $envelope, 'disposable' => $disposable];
$relayChatUrl = rtrim($r['url'], '/') . '/api/chat';
$ch = curl_init($relayChatUrl);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode($payload),
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 10,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($status !== 200) {
$relayErr = '';
$decoded = json_decode($response, true);
if (is_array($decoded) && !empty($decoded['error'])) $relayErr = ' — ' . $decoded['error'];
chatJson([
'ok' => false,
'error' => "relay returned HTTP $status$relayErr",
'url' => $relayChatUrl,
'response_body' => is_string($response) ? substr($response, 0, 500) : null,
]);
}
$resData = json_decode($response, true);
$relayId = isset($resData['id']) ? (int)$resData['id'] : null;
// Store the outgoing message locally so the UI can render it
// immediately. For group messages `peer` holds the author
// (= self); for 1:1 it holds the other party as before.
$localPeer = $roomUid !== '' ? $r['user'] : $peer;
$db->prepare('INSERT INTO chat_messages (peer, direction, body, relay_id, sent_at, is_read, delivered, seen, room_uid) VALUES (:p, "out", :b, :rid, datetime("now"), 1, 0, 0, :ru)')
->execute([
'p' => $localPeer,
'b' => $body,
'rid' => $relayId,
'ru' => $roomUid !== '' ? $roomUid : null,
]);
chatJson(['ok' => true, 'id' => (int)$db->lastInsertId()]);
}
if ($route === '/api/chat/poll' && $method === 'POST') {
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) {
chatJson(['ok' => true, 'new' => 0, 'note' => 'relay not configured']);
}
$since = (int)chatGetState('last_relay_id', 0);
$ch = curl_init(rtrim($r['url'], '/') . '/api/chat?since=' . $since);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => [
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 10,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($status !== 200) {
$relayErr = '';
$decoded = json_decode($response, true);
if (is_array($decoded) && !empty($decoded['error'])) $relayErr = ' — ' . $decoded['error'];
chatJson(['ok' => false, 'error' => "relay returned HTTP $status$relayErr"]);
}
$data = json_decode($response, true) ?: [];
$messages = $data['messages'] ?? [];
$maxId = (int)($data['max_id'] ?? $since);
$db = Database::connect();
$newCount = 0;
// `mine` on group messages (== came back from the relay because
// another device of ours sent it) gets direction='out' so the UI
// renders it aligned right; relay_id uniqueness dedupes against
// the local insert we did on send.
$insert = $db->prepare('
INSERT OR IGNORE INTO chat_messages
(peer, direction, body, relay_id, sent_at, is_read, room_uid)
VALUES (:p, :dir, :b, :rid, :ts, 0, :ru)
');
foreach ($messages as $m) {
$plain = chatDecrypt($m['body'] ?? '', $r['key']);
if ($plain === '') continue;
$isGroup = !empty($m['room_uid']);
$mine = !empty($m['mine']);
$insert->execute([
'p' => $m['sender_username'] ?? '?',
'dir' => $mine ? 'out' : 'in',
'b' => $plain,
'rid' => (int)$m['id'],
'ts' => $m['created_at'] ?? date('Y-m-d H:i:s'),
'ru' => $isGroup ? $m['room_uid'] : null,
]);
if ($insert->rowCount() > 0) $newCount++;
}
if ($maxId > $since) chatSetState('last_relay_id', $maxId);
// Mirror rooms + membership into the local cache on every poll.
// Cheap (one extra GET), and it lets a second device see a room
// it was just added to without a separate fetch.
$ch3 = curl_init(rtrim($r['url'], '/') . '/api/chat/rooms');
curl_setopt_array($ch3, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => ['X-Relay-User: ' . $r['user'], 'X-Relay-Key: ' . $r['key']],
CURLOPT_TIMEOUT => 10,
]);
$resp3 = curl_exec($ch3);
$st3 = curl_getinfo($ch3, CURLINFO_HTTP_CODE);
curl_close($ch3);
if ($st3 === 200) {
$roomsData = json_decode($resp3, true) ?: [];
$rooms = $roomsData['rooms'] ?? [];
$remoteUids = [];
$upsert = $db->prepare('INSERT OR REPLACE INTO chat_rooms (uid, name, owner_username, created_at, synced_at) VALUES (:u, :n, :o, :c, datetime("now"))');
$delMem = $db->prepare('DELETE FROM chat_room_members WHERE room_uid = :u');
$insMem = $db->prepare('INSERT OR IGNORE INTO chat_room_members (room_uid, username) VALUES (:u, :un)');
foreach ($rooms as $room) {
$uid = (string)($room['uid'] ?? '');
if ($uid === '') continue;
$remoteUids[] = $uid;
$upsert->execute([
'u' => $uid,
'n' => (string)($room['name'] ?? $uid),
'o' => (string)($room['owner_username'] ?? ''),
'c' => (string)($room['created_at'] ?? date('Y-m-d H:i:s')),
]);
$delMem->execute(['u' => $uid]);
foreach (($room['members'] ?? []) as $member) {
$insMem->execute(['u' => $uid, 'un' => (string)$member]);
}
}
// Drop local rooms we were removed from (owner kick / self-leave
// on another device). Messages for them stay on disk — harmless,
// UI won't list them without a room entry.
$existing = $db->query('SELECT uid FROM chat_rooms')->fetchAll(PDO::FETCH_COLUMN);
foreach ($existing as $uid) {
if (!in_array($uid, $remoteUids, true)) {
$db->prepare('DELETE FROM chat_rooms WHERE uid = :u')->execute(['u' => $uid]);
$db->prepare('DELETE FROM chat_room_members WHERE room_uid = :u')->execute(['u' => $uid]);
}
}
}
// ── Receipt poll for our SENT messages ──────────────────
// Pulls fetched/seen state for everything we've sent. Updates
// local outgoing rows by relay_id. Uses an independent `since`
// cursor so we keep getting state changes even on rows we
// already saw before.
$sentSince = (int)chatGetState('last_sent_relay_id', 0);
$ch2 = curl_init(rtrim($r['url'], '/') . '/api/chat/sent?since=' . $sentSince);
curl_setopt_array($ch2, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => [
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 10,
]);
$resp2 = curl_exec($ch2);
$st2 = curl_getinfo($ch2, CURLINFO_HTTP_CODE);
curl_close($ch2);
$receiptUpdates = 0;
if ($st2 === 200) {
$sentData = json_decode($resp2, true) ?: [];
$receipts = $sentData['receipts'] ?? [];
$sentMaxId = (int)($sentData['max_id'] ?? $sentSince);
$upd = $db->prepare('UPDATE chat_messages SET delivered = :d, seen = :s WHERE relay_id = :rid AND direction = "out"');
foreach ($receipts as $rcpt) {
$upd->execute([
'd' => (int)($rcpt['fetched'] ?? 0),
's' => (int)($rcpt['seen'] ?? 0),
'rid' => (int)$rcpt['id'],
]);
$receiptUpdates += $upd->rowCount();
}
// Cursor only advances when EVERY row's state is final (seen=1).
// Otherwise we need to keep re-polling those rows for updates.
// Cheap implementation: if every row in this batch is seen, bump
// cursor to maxId; else keep polling from the lowest non-seen id.
$allSeen = true;
$minPending = $sentMaxId;
foreach ($receipts as $rcpt) {
if ((int)($rcpt['seen'] ?? 0) !== 1) {
$allSeen = false;
if ((int)$rcpt['id'] - 1 < $minPending) $minPending = (int)$rcpt['id'] - 1;
}
}
if ($allSeen && $sentMaxId > $sentSince) {
chatSetState('last_sent_relay_id', $sentMaxId);
} else if (!$allSeen && $minPending > $sentSince) {
chatSetState('last_sent_relay_id', $minPending);
}
}
chatJson(['ok' => true, 'new' => $newCount, 'receipts' => $receiptUpdates]);
}
if ($route === '/api/chat/read' && $method === 'POST') {
$input = json_decode(file_get_contents('php://input'), true) ?: [];
$peer = trim((string)($input['peer'] ?? ''));
$roomUid = trim((string)($input['room_uid'] ?? ''));
if ($peer === '' && $roomUid === '') chatJson(['error' => 'peer or room_uid required'], 400);
$db = Database::connect();
if ($roomUid !== '') {
$db->prepare('UPDATE chat_messages SET is_read = 1 WHERE room_uid = :r AND direction = "in" AND is_read = 0')
->execute(['r' => $roomUid]);
// Group "seen" receipts aren't a thing in v1 — skip the relay
// notification. The local is_read flag is enough for badge UI.
chatJson(['ok' => true]);
}
$db->prepare('UPDATE chat_messages SET is_read = 1 WHERE peer = :p AND room_uid IS NULL AND direction = "in" AND is_read = 0')
->execute(['p' => $peer]);
// Tell the relay this peer's messages have been seen by us so the
// peer's next /api/chat/sent poll picks up the double-check state.
$r = chatRelaySettings();
if ($r['url'] && $r['user'] && $r['key']) {
$ch = curl_init(rtrim($r['url'], '/') . '/api/chat/seen');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode(['peer' => $peer]),
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 5,
]);
curl_exec($ch);
curl_close($ch);
// Failures are silent — the user already saw the messages
// locally, the relay state is just lagging.
}
chatJson(['ok' => true]);
}
if ($route === '/api/chat/recipients' && $method === 'GET') {
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) {
chatJson(['ok' => false, 'error' => 'relay not configured']);
}
$ch = curl_init(rtrim($r['url'], '/') . '/api/tenants');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => [
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 10,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($status !== 200) chatJson(['ok' => false, 'error' => "relay returned HTTP $status"]);
$data = json_decode($response, true) ?: [];
chatJson(['ok' => true, 'tenants' => $data['tenants'] ?? [], 'self' => $data['self'] ?? $r['user']]);
}
// ── Rooms CRUD (proxy to relay) ──────────────────────────────
if ($route === '/api/chat/rooms' && $method === 'GET') {
$db = Database::connect();
$rooms = $db->query('SELECT uid, name, owner_username, created_at FROM chat_rooms ORDER BY created_at DESC')->fetchAll();
$mstmt = $db->prepare('SELECT username FROM chat_room_members WHERE room_uid = :u ORDER BY username');
foreach ($rooms as &$room) {
$mstmt->execute(['u' => $room['uid']]);
$room['members'] = array_column($mstmt->fetchAll(), 'username');
}
chatJson(['ok' => true, 'rooms' => $rooms]);
}
if ($route === '/api/chat/rooms' && $method === 'POST') {
$input = json_decode(file_get_contents('php://input'), true) ?: [];
$name = trim((string)($input['name'] ?? ''));
$members = is_array($input['members'] ?? null) ? $input['members'] : [];
if ($name === '') chatJson(['error' => 'name required'], 400);
if (count(array_filter($members, fn($m) => trim((string)$m) !== '')) === 0) {
chatJson(['error' => 'at least one other member required'], 400);
}
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) chatJson(['error' => 'relay not configured'], 400);
// Client-generated UID, same convention as collab buckets.
$uid = bin2hex(random_bytes(8));
$relayUrl = rtrim($r['url'], '/') . '/api/chat/rooms';
$ch = curl_init($relayUrl);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode(['uid' => $uid, 'name' => $name, 'members' => $members]),
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 10,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($status !== 200) {
$err = json_decode($response, true);
$detail = $err['error'] ?? "relay HTTP $status";
// 404 on this path almost always means the relay is running a
// pre-group-chat build. Surface that explicitly so the user
// doesn't go hunting for data issues.
if ($status === 404) {
$detail = "relay does not know /api/chat/rooms — it's likely running old code. Restart the relay after pulling the latest commits.";
}
chatJson(['ok' => false, 'error' => $detail, 'url' => $relayUrl, 'relay_status' => $status]);
}
$data = json_decode($response, true) ?: [];
// Mirror locally right away so the next conversations list shows
// the room without waiting for a poll.
$db = Database::connect();
$db->prepare('INSERT OR REPLACE INTO chat_rooms (uid, name, owner_username, created_at, synced_at) VALUES (:u, :n, :o, datetime("now"), datetime("now"))')
->execute(['u' => $uid, 'n' => $name, 'o' => $r['user']]);
$db->prepare('DELETE FROM chat_room_members WHERE room_uid = :u')->execute(['u' => $uid]);
$insMem = $db->prepare('INSERT INTO chat_room_members (room_uid, username) VALUES (:u, :un)');
foreach (($data['members'] ?? []) as $mu) {
$insMem->execute(['u' => $uid, 'un' => $mu]);
}
chatJson(['ok' => true, 'uid' => $uid, 'members' => $data['members'] ?? []]);
}
if (preg_match('#^/api/chat/rooms/([a-zA-Z0-9_-]+)$#', $route, $m) && $method === 'PATCH') {
$uid = $m[1];
$input = json_decode(file_get_contents('php://input'), true) ?: [];
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) chatJson(['error' => 'relay not configured'], 400);
$ch = curl_init(rtrim($r['url'], '/') . '/api/chat/rooms/' . urlencode($uid));
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CUSTOMREQUEST => 'PATCH',
CURLOPT_POSTFIELDS => json_encode($input),
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'X-Relay-User: ' . $r['user'],
'X-Relay-Key: ' . $r['key'],
],
CURLOPT_TIMEOUT => 10,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
// The next poll will refresh the local room mirror with the new
// name / member list. No need to replay the update here.
chatJson(json_decode($response, true) ?: ['ok' => $status === 200]);
}
if (preg_match('#^/api/chat/rooms/([a-zA-Z0-9_-]+)$#', $route, $m) && $method === 'DELETE') {
$uid = $m[1];
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) chatJson(['error' => 'relay not configured'], 400);
$ch = curl_init(rtrim($r['url'], '/') . '/api/chat/rooms/' . urlencode($uid));
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CUSTOMREQUEST => 'DELETE',
CURLOPT_HTTPHEADER => ['X-Relay-User: ' . $r['user'], 'X-Relay-Key: ' . $r['key']],
CURLOPT_TIMEOUT => 10,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($status === 200) {
$db = Database::connect();
$db->prepare('DELETE FROM chat_rooms WHERE uid = :u')->execute(['u' => $uid]);
$db->prepare('DELETE FROM chat_room_members WHERE room_uid = :u')->execute(['u' => $uid]);
}
chatJson(json_decode($response, true) ?: ['ok' => $status === 200]);
}
// ── Backfill older messages for a thread (scrollback / cold start) ──
if ($route === '/api/chat/backfill' && $method === 'POST') {
$input = json_decode(file_get_contents('php://input'), true) ?: [];
$peer = trim((string)($input['peer'] ?? ''));
$roomUid = trim((string)($input['room_uid'] ?? ''));
$before = (int)($input['before'] ?? 0);
$limit = max(1, min(500, (int)($input['limit'] ?? 100)));
if ($peer === '' && $roomUid === '') chatJson(['error' => 'peer or room_uid required'], 400);
$r = chatRelaySettings();
if (!$r['url'] || !$r['user'] || !$r['key']) chatJson(['error' => 'relay not configured'], 400);
$qs = http_build_query(array_filter([
'room_uid' => $roomUid ?: null,
'peer' => $peer ?: null,
'before' => $before > 0 ? $before : null,
'limit' => $limit,
], fn($v) => $v !== null));
$ch = curl_init(rtrim($r['url'], '/') . '/api/chat/backfill?' . $qs);
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => ['X-Relay-User: ' . $r['user'], 'X-Relay-Key: ' . $r['key']],
CURLOPT_TIMEOUT => 15,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($status !== 200) {
$err = json_decode($response, true);
chatJson(['ok' => false, 'error' => $err['error'] ?? "relay HTTP $status"]);
}
$data = json_decode($response, true) ?: [];
$messages = $data['messages'] ?? [];
$db = Database::connect();
$newCount = 0;
$insert = $db->prepare('
INSERT OR IGNORE INTO chat_messages
(peer, direction, body, relay_id, sent_at, is_read, room_uid)
VALUES (:p, :dir, :b, :rid, :ts, 1, :ru)
');
foreach ($messages as $m) {
$plain = chatDecrypt($m['body'] ?? '', $r['key']);
if ($plain === '') continue;
$insert->execute([
'p' => $m['sender_username'] ?? '?',
'dir' => !empty($m['mine']) ? 'out' : 'in',
'b' => $plain,
'rid' => (int)$m['id'],
'ts' => $m['created_at'] ?? date('Y-m-d H:i:s'),
'ru' => !empty($m['room_uid']) ? $m['room_uid'] : null,
]);
if ($insert->rowCount() > 0) $newCount++;
}
chatJson(['ok' => true, 'backfilled' => $newCount]);
}
// ── Per-thread settings (currently just the disposable flag) ──
if ($route === '/api/chat/thread-settings' && $method === 'GET') {
$peer = trim((string)($_GET['peer'] ?? ''));
if ($peer === '') chatJson(['error' => 'peer required'], 400);
$db = Database::connect();
$stmt = $db->prepare('SELECT disposable FROM chat_thread_settings WHERE peer = :p');
$stmt->execute(['p' => $peer]);
$disposable = (int)($stmt->fetchColumn() ?: 0);
chatJson(['ok' => true, 'peer' => $peer, 'disposable' => $disposable]);
}
if ($route === '/api/chat/thread-settings' && $method === 'POST') {
$input = json_decode(file_get_contents('php://input'), true) ?: [];
$peer = trim((string)($input['peer'] ?? ''));
$disposable = !empty($input['disposable']) ? 1 : 0;
if ($peer === '') chatJson(['error' => 'peer required'], 400);
$db = Database::connect();
$db->prepare('INSERT OR REPLACE INTO chat_thread_settings (peer, disposable) VALUES (:p, :d)')
->execute(['p' => $peer, 'd' => $disposable]);
chatJson(['ok' => true, 'peer' => $peer, 'disposable' => $disposable]);
}
});