<?php

require_once __DIR__ . '/../common/auth.php';

header('Content-Type: application/json; charset=utf-8');
header('Cache-Control: no-store');

custom_require_auth();

$config = custom_config();
$wakeConfig = $config['control']['wake_lan'] ?? [];
$controlBase = rtrim((string)($wakeConfig['base'] ?? ''), '/');
$controlToken = (string)($wakeConfig['token'] ?? '');
$targetMac = strtolower((string)($wakeConfig['mac'] ?? ''));
$timeout = max(2, (int)($wakeConfig['timeout'] ?? 8));

function wake_control_request(string $method, string $action, array $params): ?array
{
    global $controlBase, $controlToken, $timeout;

    if ($controlBase === '' || $controlToken === '') {
        return null;
    }

    $url = $controlBase . '/api.php?action=' . rawurlencode($action);
    $body = http_build_query($params, '', '&');

    if ($method === 'GET' && $body !== '') {
        $url .= '&' . $body;
    }

    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_CONNECTTIMEOUT => $timeout,
        CURLOPT_TIMEOUT => $timeout,
        CURLOPT_HTTPHEADER => [
            'Accept: application/json',
            'X-Control-API-Token: ' . $controlToken,
        ],
    ]);

    if ($method === 'POST') {
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Accept: application/json',
            'Content-Type: application/x-www-form-urlencoded',
            'X-Control-API-Token: ' . $controlToken,
        ]);
    }

    $raw = curl_exec($ch);
    $status = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if (!is_string($raw) || $raw === '') {
        return null;
    }

    $decoded = json_decode($raw, true);
    if (!is_array($decoded)) {
        return null;
    }

    $decoded['_http_status'] = $status;

    return $decoded;
}

if (isset($_GET['status'])) {
    $res = wake_control_request('GET', 'wake_lan_status', [
        'mac' => $targetMac,
    ]);

    if (!$res || empty($res['ok'])) {
        custom_json(['result' => 'error'], 502);
    }

    $wake = $res['data']['wake'] ?? [];

    custom_json([
        'result' => 'ok',
        'state' => (string)($wake['state'] ?? 'unknown'),
        'wake' => $wake,
    ]);
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $res = wake_control_request('POST', 'wake_lan', [
        'mac' => $targetMac,
    ]);

    if (!$res) {
        custom_json(['result' => 'error'], 502);
    }

    if (!empty($res['ok'])) {
        custom_json([
            'result' => 'sent',
            'wake' => $res['data']['wake'] ?? null,
        ]);
    }

    if (($res['message'] ?? '') === 'device_already_online') {
        custom_json([
            'result' => 'already',
            'state' => 'on',
        ]);
    }

    custom_json([
        'result' => 'error',
        'message' => $res['message'] ?? $res['error'] ?? 'control_wake_failed',
    ], 502);
}

custom_json(['result' => 'invalid_request'], 400);