<?php
/**
 * WEVAL Support Tickets sovereign 21avr2026
 * Local JSONL + status tracking (open/resolved/closed)
 * Storage: /opt/weval-l99/data/tickets.jsonl
 */
header('Content-Type: application/json');

$STORAGE = '/opt/weval-l99/data/tickets.jsonl';
@mkdir(dirname($STORAGE), 0755, true);

$action = $_GET['action'] ?? ($_POST['action'] ?? 'stats');

if ($action === 'create' && $_SERVER['REQUEST_METHOD'] === 'POST') {
    $subject = substr(trim($_POST['subject'] ?? ''), 0, 200);
    $body = substr(trim($_POST['body'] ?? ''), 0, 2000);
    $user = substr(trim($_POST['user'] ?? 'anonymous'), 0, 60);
    $priority = in_array($_POST['priority'] ?? '', ['low','medium','high','critical']) ? $_POST['priority'] : 'medium';
    if (!$subject) {
        echo json_encode(['ok'=>false,'error'=>'subject_required']);
        exit;
    }
    $id = 'TKT-' . date('Ymd') . '-' . substr(md5($subject.microtime()), 0, 6);
    $record = ['ts'=>date('c'),'id'=>$id,'status'=>'open','subject'=>$subject,'body'=>$body,'user'=>$user,'priority'=>$priority,'resolved_at'=>null];
    @file_put_contents($STORAGE, json_encode($record)."\n", FILE_APPEND | LOCK_EX);
    echo json_encode(['ok'=>true,'ticket_id'=>$id]);
    exit;
}

$tickets = [];
if (is_readable($STORAGE)) {
    foreach (file($STORAGE) as $line) {
        $r = @json_decode(trim($line), true);
        if ($r) $tickets[] = $r;
    }
}

// Stats
$total = count($tickets);
$open = 0; $resolved = 0; $mttr_hours = 0; $mttr_count = 0;
foreach ($tickets as $t) {
    if ($t['status'] === 'open') $open++;
    elseif ($t['status'] === 'resolved' || $t['status'] === 'closed') {
        $resolved++;
        if (!empty($t['resolved_at'])) {
            $delta = (strtotime($t['resolved_at']) - strtotime($t['ts'])) / 3600;
            if ($delta > 0) { $mttr_hours += $delta; $mttr_count++; }
        }
    }
}
$mttr = $mttr_count > 0 ? round($mttr_hours / $mttr_count, 1) : 0;

echo json_encode([
    'ok'=>true,
    'source'=>'sovereign_jsonl',
    'ts'=>date('c'),
    'tickets_total'=>$total,
    'tickets_open'=>$open,
    'tickets_resolved'=>$resolved,
    'mttr_hours'=>$mttr,
    'status'=>$open === 0 && $total === 0 ? 'wire_needed' : ($open <= 5 ? 'ok' : 'warn'),
    'endpoint_create'=>'/api/tickets-api.php?action=create',
]);