<?php
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/scheduler.php';

$id = trim($_SERVER['REQUEST_METHOD'] === 'POST' ? ($_POST['id'] ?? '') : ($_GET['id'] ?? ''));

if (!$id || !preg_match('/^[a-zA-Z0-9_.\/\-]+\.sh$/', $id) || str_contains($id, '..')) {
    echo json_encode(['ok' => false, 'error' => 'Invalid job id']);
    exit;
}

$logFile = vv_job_log_path($id);

if ($_SERVER['REQUEST_METHOD'] === 'POST' && !empty($_POST['clear'])) {
    if (file_exists($logFile)) file_put_contents($logFile, '');
    echo json_encode(['ok' => true]);
    exit;
}

if (!file_exists($logFile)) {
    echo json_encode(['ok' => true, 'content' => '', 'ts' => 0]);
    exit;
}

$lines = array_slice(file($logFile) ?: [], -200);
echo json_encode([
    'ok'      => true,
    'content' => implode('', $lines),
    'ts'      => filemtime($logFile),
]);