<?php
declare(strict_types=1);
require_once __DIR__ . '/../../lib/bootstrap.php';

v2_validate_method('GET');
v2_auth_require('teacher');
mock_log('GET /api/teacher/live-status', $_GET ?: []);

// Mock: liest aus dem Mock-Log die letzten Telemetry-Events und baut Status-Snapshot
$logFile = __DIR__ . '/../../uploads/log.jsonl';
$status = [];
if (file_exists($logFile)) {
    $lines = file($logFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
    // letzte ~50 telemetry-Events
    $recent = array_slice($lines, -200);
    $perStudent = []; // simulieren: Mock-Plattform kennt keinen Student-Bezug per Token
    foreach ($recent as $line) {
        $e = json_decode($line, true);
        if (!$e || ($e['endpoint'] ?? '') !== 'POST /api/telemetry') continue;
        $b = $e['body'] ?? [];
        $sid = 42;  // Mock kennt nur Lena
        $perStudent[$sid] = [
            'studentId' => $sid, 'displayName' => 'Lena', 'avatarSlug' => 'fuchs-explorer',
            'nachteilsausgleich' => false,
            'moduleSlug' => $b['moduleSlug'] ?? '?',
            'eventType' => $b['type'] ?? '?',
            'phase' => $b['phase'] ?? null,
            'phaseLabel' => $b['phaseLabel'] ?? null,
            'currentScore' => $b['currentScore'] ?? null,
            'scoreMax' => $b['scoreMax'] ?? null,
            'idleS' => $b['idleS'] ?? null,
            'lastTs' => $e['ts'],
            'isStuck' => ($b['type'] ?? '') === 'stuck',
        ];
    }
    $status = array_values($perStudent);
}

v2_response_ok([
    'studentStatus' => $status,
    'newEvents' => [],
    'maxId' => 0,
    '_mock' => 'Live-Status aus mock/uploads/log.jsonl rekonstruiert.',
]);