const exec = require('child_process').exec; 
const config = require('../config');

class Utils{

    /**
     * 运行命令
     * @param cmdStr
     * @returns {Promise<unknown>}
     */
    execShell (cmdStr) {
        return new Promise((resolve,reject)=> {
            exec(cmdStr, function(err,stdout,stderr) {
                if(err) {
                    console.log('shell is run: '+ stderr);
                } else {
                    resolve(stdout)
                }
            });
        })
    }

    /**
     * 检查是否安装 ADBKeyboard.apk app
     * 否则无法输入中文
     * @constructor
     */
    async CheckAdbKeyboard() {
        let res = await this.execShell(config.baseShell.adbkeyboard);
        if (res.indexOf("com.android.adbkeyboard") > -1) {
            return true
        } else {
            console.error("请先安装 ADBKeyboard.apk")
            return false
        }
    }

    /**
     * 检查是否安装adb
     * @returns {Promise<void>}
     * @constructor
     */
    async CheckInstallAdb() {
        let res = await this.execShell(config.baseShell.adb)
        if (res.indexOf("Android Debug Bridge version") > -1) {
            return true
        } else {
            console.error("请先在PC电脑上安装adb工具！！")
            return false
        }
    }

}

module.exports = new Utils();