public function download(Request $request)
{
$action = $request->input('action');
if (!$this->newVersionAvailable()) {
return;
}
$release_url = $this->getReleaseInfo($this->latestVersion)['release_url'];
$file_size = Utils::getRemoteFileSize($release_url);
$tmp_path = session('tmp_path');
switch ($action) {
case 'prepare-download':
$update_cache = storage_path('update_cache');
if (!is_dir($update_cache)) {
if (false === mkdir($update_cache)) {
exit('创建下载缓存文件夹失败，请检查目录权限。');
}
}
$tmp_path = $update_cache . "/update_" . time() . ".zip";
session(['tmp_path' => $tmp_path]);
return json(compact('release_url', 'tmp_path', 'file_size'));
break;
case 'start-download':
if (!session()->has('tmp_path')) {
return "No temp path is set.";
}
try {
Utils::download($release_url, $tmp_path);
} catch (\Exception $e) {
Storage::remove($tmp_path);
exit('发生错误：' . $e->getMessage());
}
return json(compact('tmp_path'));
break;
case 'get-file-size':
if (!session()->has('tmp_path')) {
return "No temp path is set.";
}
if (file_exists($tmp_path)) {
return json(['size' => filesize($tmp_path)]);
}
break;
case 'extract':
if (!file_exists($tmp_path)) {
exit('No file available');
}
$extract_dir = storage_path("update_cache/{$this->latestVersion}");
$zip = new ZipArchive();
$res = $zip->open($tmp_path);
if ($res === true) {
Log::info("[ZipArchive] Extracting file {$tmp_path}");
try {
$zip->extractTo($extract_dir);
} catch (\Exception $e) {
exit('发生错误：' . $e->getMessage());
}
} else {
exit('更新包解压缩失败。错误代码：' . $res);
}
$zip->close();
if (Storage::copyDir($extract_dir, base_path()) !== true) {
Storage::removeDir(storage_path('update_cache'));
exit('无法覆盖文件。');
} else {
Log::info("[Extracter] Covering files");
Storage::removeDir(storage_path('update_cache'));
Log::info("[Extracter] Cleaning cache");
}
return json('更新完成', 0);
break;
default:
# code...
break;
}
}
