<?php

/* V137: log widget/master/form sessions to wevia_db public.conversations + messages */
if (!function_exists('wevia_log_session_v137')) {
    function wevia_log_session_v137($sid, $title, $user_msg, $assistant_msg, $source='widget') {
        try {
            $pdo = new PDO("pgsql:host=127.0.0.1;dbname=wevia_db;connect_timeout=3","admin","admin123",[PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_TIMEOUT => 3]);
            if (!$sid) return false;
            $ip = $_SERVER['REMOTE_ADDR'] ?? '';
            $ua = substr($_SERVER['HTTP_USER_AGENT'] ?? '', 0, 240);
            $lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? '', 0, 20);
            $device = (stripos($ua, 'Mobile') !== false) ? 'mobile' : 'desktop';
            $browser = 'other';
            if (stripos($ua, 'Chrome') !== false) $browser = 'chrome';
            elseif (stripos($ua, 'Firefox') !== false) $browser = 'firefox';
            elseif (stripos($ua, 'Safari') !== false) $browser = 'safari';
            elseif (stripos($ua, 'Edge') !== false) $browser = 'edge';
            /* find existing conversation or create */
            $stmt = $pdo->prepare("SELECT id FROM public.conversations WHERE session_id=? ORDER BY updated_at DESC LIMIT 1");
            $stmt->execute([$sid]);
            $cid = $stmt->fetchColumn();
            if (!$cid) {
                $stmt = $pdo->prepare("INSERT INTO public.conversations (session_id, title, ip_address, user_agent, device, browser, language, source) VALUES (?,?,?,?,?,?,?,?) RETURNING id");
                $stmt->execute([$sid, mb_substr($title ?: '(sans titre)', 0, 200), $ip, $ua, $device, $browser, $lang, $source]);
                $cid = $stmt->fetchColumn();
            } else {
                $pdo->prepare("UPDATE public.conversations SET updated_at=NOW(), source=COALESCE(source,?) WHERE id=?")->execute([$source, $cid]);
            }
            if ($cid) {
                if ($user_msg !== '') $pdo->prepare("INSERT INTO public.messages (conversation_id, role, content) VALUES (?,?,?)")->execute([$cid, 'user', mb_substr($user_msg, 0, 8000)]);
                if ($assistant_msg !== '') $pdo->prepare("INSERT INTO public.messages (conversation_id, role, content) VALUES (?,?,?)")->execute([$cid, 'assistant', mb_substr($assistant_msg, 0, 32000)]);
            }
            return true;
        } catch (Throwable $e) { error_log("WEVIA_LOG_V137 fail: ".$e->getMessage()); return false; }
    }
}

require_once __DIR__ . '/_secrets.php'; error_reporting(E_ALL);ini_set("display_errors",0);
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Headers: Content-Type');
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') exit;
if ($_SERVER['REQUEST_METHOD'] !== 'POST') die(json_encode(['error'=>'POST only']));

$data = json_decode(file_get_contents('php://input'), true);
$email = filter_var($data['email'] ?? '', FILTER_VALIDATE_EMAIL);
$name = substr($data['name'] ?? '', 0, 100);
$form_id = substr($data['form_id'] ?? 'default', 0, 50);

/* V142 early-log: trace ALL form submits including validation failures */
try {
    $__v142_sid = "form-" . ($data["form_id"] ?? "unknown") . "-" . substr(md5(($data["email"] ?? "") . ($_SERVER["REMOTE_ADDR"] ?? "")), 0, 12);
    $__v142_title = "Form " . ($data["form_id"] ?? "?") . " · " . ($data["email"] ?? "anon");
    $__v142_msg = "name=" . ($data["name"] ?? "") . " email=" . ($data["email"] ?? "(invalid)") . " msg=" . substr($data["message"] ?? "", 0, 500);
    @wevia_log_session_v137($__v142_sid, $__v142_title, $__v142_msg, "", "form-inline");
} catch (Throwable $__e_v142) { /* silent */ }

if (!$email) die(json_encode(['error'=>'Invalid email']));

$db = new PDO('pgsql:host=10.1.0.3;port=5432;dbname=adx_system','admin',weval_secret('WEVAL_PG_ADMIN_PASS'));
$db->exec("SET search_path TO admin");

try {
    $db->exec("CREATE TABLE IF NOT EXISTS form_submissions (id SERIAL PRIMARY KEY, form_id TEXT, email TEXT, name TEXT, ip TEXT, created_at TIMESTAMP DEFAULT NOW())");
    $db->prepare("INSERT INTO form_submissions (form_id, email, name, ip) VALUES (?, ?, ?, ?)")
        ->execute([$form_id, $email, $name, $_SERVER['REMOTE_ADDR'] ?? '']);
    
    // Also add to send_contacts if not exists
    $exists = $db->prepare("SELECT COUNT(*) FROM send_contacts WHERE email = ?");
    $exists->execute([$email]);
    if ($exists->fetchColumn() == 0) {
        $db->prepare("INSERT INTO send_contacts (email, first_name, status, source, score) VALUES (?, ?, 'active', ?, 100)")
            ->execute([$email, $name, 'form_' . $form_id]);
    }
    
    echo json_encode(['ok'=>1, 'message'=>'Subscribed']);
} catch (Exception $e) {
    echo json_encode(['error'=>'Server error']);
}

/* V137: log form submission to unified sessions */
try {
    $__form_sid = "form-" . ($_POST["form_id"] ?? "unknown") . "-" . substr(md5($_POST["email"] ?? $_SERVER["REMOTE_ADDR"] ?? ""), 0, 12);
    $__form_title = "Form " . ($_POST["form_id"] ?? "?") . " · " . ($_POST["email"] ?? "anon");
    $__form_msg = "name=" . ($_POST["name"] ?? "") . " email=" . ($_POST["email"] ?? "") . " msg=" . substr($_POST["message"] ?? "", 0, 500);
    @wevia_log_session_v137($__form_sid, $__form_title, $__form_msg, "", "form-inline");
} catch (Throwable $__e) { /* silent */ }