/*
 * Copyright (c) 2025 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { execCommand } from './commandExecutor';

/**
 * Utility methods for managing devices and processes
 */
export class DeviceUtil {
  /**
   * Gets the PID of a process on the device by process name
   *
   * @param deviceId Device identifier
   * @param processName Process name
   * @returns Process ID
   */
  static async getPidByProcessName(deviceId: string, processName: string): Promise<number | null> {
    let cmd = `xcrun devicectl device info processes --device ${deviceId} | grep "/${processName}.app/${processName}" | awk '{print $1}'`;
    try {
      let execResult = await execCommand(cmd);
      if (!execResult) {
        return null;
      }
      let pid = parseInt(execResult.output.split('\n')[0], 10);
      return isNaN(pid) ? null : pid;
    } catch {
      return null;
    }
  }

  /**
   * Gets the PID of a process on the device by bundle identifier
   *
   * @param deviceId Device identifier
   * @param bundleId Application bundle identifier
   * @returns Process ID
   */
  static async getPidByBundleId(deviceId: string, bundleId: string): Promise<number | null> {
    try {
      let cmd = `xcrun devicectl device info apps --device ${deviceId} 2>/dev/null | awk 'tolower($2)==tolower("${bundleId}"){print $1}'`;
      let execResult = await execCommand(cmd);
      if (!execResult) {
        return null;
      }
      return await this.getPidByProcessName(deviceId, execResult.output.trim());
    } catch {
      return null;
    }
  }
}