<?php
// OPUS5 WEVIA MASTER DISPATCH PROXY v2 - with task-log integration
// Routes chat messages: match stub triggers → exec cmd → log to task-log → proxy fallback

header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('X-Content-Type-Options: nosniff');

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') { http_response_code(200); exit; }

$raw = file_get_contents('php://input');
$in = @json_decode($raw, true) ?: [];
$msg = trim($in['message'] ?? ($_POST['message'] ?? ''));
$session = $in['session'] ?? ('dispatch-' . substr(md5(uniqid()), 0, 8));

function log_task($data) {
    $line = json_encode($data, JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES) . "\n";
    @file_put_contents('/tmp/opus5-task-log.jsonl', $line, FILE_APPEND | LOCK_EX);
}

if (empty($msg)) {
    http_response_code(200);
    echo json_encode(['success'=>false, 'error'=>'message required']);
    exit;
}

$msg_lower = mb_strtolower($msg);
$t_start = microtime(true);

// === STEP 1: try opus4 stub trigger match ===
$stubs = @glob('/var/www/html/api/wired-pending/intent-opus4-*.php') ?: [];

foreach ($stubs as $s) {
    $info = @include $s;
    if (!is_array($info) || empty($info['triggers'])) continue;
    $status = $info['status'] ?? '';
    if (!in_array($status, ['EXECUTED', 'PENDING_APPROVAL'])) continue;
    
    foreach ($info['triggers'] as $trg) {
        $trg = trim($trg);
        if ($trg === '') continue;
        if (stripos($msg_lower, mb_strtolower($trg)) !== false) {
            $cmd = $info['cmd'] ?? '';
            
            // Safety whitelist
            $safe = false;
            foreach (['/var/www/html/', 'echo ', 'curl ', 'php8.4 ', 'grep ', 'psql '] as $p) {
                if (stripos($cmd, $p) === 0 || stripos($cmd, " $p") !== false) { $safe = true; break; }
            }
            if (!$safe) continue;
            
            $out = @shell_exec('timeout 15 ' . $cmd . ' 2>&1');
            $ms = round((microtime(true) - $t_start) * 1000);
            
            log_task([
                'ts' => date('c'),
                'session' => $session,
                'user' => $in['user'] ?? 'yacine',
                'type' => 'dispatch',
                'intent' => $info['name'],
                'provider' => 'opus5-dispatch-proxy',
                'trigger_matched' => $trg,
                'message' => substr($msg, 0, 500),
                'response' => substr(trim((string)$out), 0, 500),
                'ms' => $ms,
                'status' => 'ok'
            ]);
            
            http_response_code(200);
            echo json_encode([
                'response' => "Intent '{$info['name']}' executed (trigger: $trg)\n" . trim((string)$out),
                'executed' => true,
                'provider' => 'opus5-dispatch-proxy',
                'intent' => $info['name'],
                'trigger_matched' => $trg,
                'ms' => $ms,
                'session' => $session,
                'output' => trim((string)$out)
            ], JSON_UNESCAPED_SLASHES|JSON_UNESCAPED_UNICODE);
            exit;
        }
    }
}

// === STEP 2: proxy to wevia-master-api ===
$ch = curl_init('http://127.0.0.1/api/wevia-master-api.php');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => $raw,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 60
]);
$resp = curl_exec($ch);
$http = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

$ms = round((microtime(true) - $t_start) * 1000);
$decoded = @json_decode($resp, true);

log_task([
    'ts' => date('c'),
    'session' => $session,
    'user' => $in['user'] ?? 'yacine',
    'type' => 'proxy',
    'intent' => $decoded['intent'] ?? $decoded['tool'] ?? null,
    'provider' => $decoded['provider'] ?? 'master-api',
    'message' => substr($msg, 0, 500),
    'response' => substr((string)($decoded['content'] ?? $decoded['response'] ?? ''), 0, 500),
    'ms' => $ms,
    'status' => ($http === 200 ? 'ok' : 'upstream_error'),
    'http' => $http
]);

http_response_code(200);
echo $resp ?: json_encode(['success'=>false, 'error'=>'upstream_error', 'http'=>$http, 'ms'=>$ms]);