<?php
function wevia_resolve($msg) {
    // OPUS-FIX: Skip resolver for conversational/redaction requests -> let LLM handle
    $m_lower = mb_strtolower(trim($msg));
    if (mb_strlen($m_lower) > 60 && preg_match('/\b(redige|ecris|compose|prepare|formule|genere|propose|planifie|organise|convainc|argumente|resume|tradui|ameliore|rapport|email|lettre|message|strategie|plan|brainstorm)\b/iu', $m_lower)) {
        return null;
    }
    $registry = __DIR__ . '/wevia-tool-registry.json';
    if (!file_exists($registry)) return null;
    $data = json_decode(file_get_contents($registry), true);
    if (!is_array($data)) return null;
    $tools = $data['tools'] ?? $data;
    $msg_lower = mb_strtolower(trim($msg));
    $best = null;
    $best_score = 0;
    foreach ($tools as $tool) {
        if (empty($tool['kw'])) continue;
        $score = 0;
        if (@preg_match('/' . $tool['kw'] . '/i', $msg_lower)) {
            $score = 10;
        } else {
            $keywords = preg_split('/[|.*()]+/', $tool['kw']);
            foreach ($keywords as $kw) {
                $kw = trim($kw);
                if ($kw && mb_strpos($msg_lower, $kw) !== false) $score += 2;
            }
        }
        if ($score > 0 && mb_strlen($msg_lower) > 60 && preg_match("/reconcil|diagnostic|bilan|test_global/", $tool["id"] ?? "")) $score += 1; if ($score > $best_score || ($score == $best_score && !empty($tool["cmd"]) && empty($best["cmd"]))) {
            $best_score = $score;
            $best = $tool;
        }
    }
    if (!$best || $best_score < 3) return null;
    $result = '';
    // EXEC with sudo + timeout 15s to avoid CF 520
    if (!empty($best['cmd'])) {
        $result = shell_exec('sudo timeout 15 bash -c ' . escapeshellarg($best['cmd']) . ' 2>&1') ?? '';
        if (trim($result) === '') $result = '[timeout 15s] Commande lente. Essayez plus ciblé.';
    } elseif (strpos($best['api'] ?? '', 'GET:') === 0) {
        $ctx = stream_context_create(['http' => ['timeout' => 4]]);
        $result = @file_get_contents('http://127.0.0.1' . substr($best['api'], 4), false, $ctx) ?? '';
    } elseif (strpos($best['api'] ?? '', 'POST:') === 0) {
        $ctx = stream_context_create(['http' => ['method' => 'POST', 'timeout' => 4]]);
        $result = @file_get_contents('http://127.0.0.1' . substr($best['api'], 5), false, $ctx) ?? '';
    }
    if (!$result) return ["provider"=>"dynamic-resolver","content"=>"[" . ($best["id"] ?? "tool") . "] pas de reponse (timeout ou service down)","tool"=>$best["id"]??"unknown"];
    return ['provider' => 'dynamic-resolver', 'content' => trim($result), 'tool' => $best['id'] ?? 'unknown'];
}
function wevia_dynamic_resolve($msg) { return wevia_resolve($msg); }