import { WriteApi } from '../interface';
import SimpleDateFormat from 'java.text.SimpleDateFormat';
import Locale from 'java.util.Locale';
import FileOutputStream from 'java.io.FileOutputStream';
import File from 'java.io.File';
import Date from "java.util.Date";
import OutputStreamWriter from 'java.io.OutputStreamWriter';
import Log from 'android.util.Log';
const LOG_DISPLAY_NAME = "app_log.txt";

// 字符串转Uint8Array
function stringToUint8Array(str: string) : ByteArray{
  const arr: ByteArray = new ByteArray(str.length);
  for (let i = 0; i < str.length; i++) {
    arr.set(i.toInt(), str.charCodeAt(i)!!.toByte());
  }
  return arr
}

// 创建消息格式
function createMessage(logMessage : string) : string {
	const timestamp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS", Locale.getDefault()).format(new Date());
	const logEntry = timestamp + " - " + logMessage + "\n";
	Log.d("systech",logMessage);
	return logEntry
}

// 写入日志
export const write : WriteApi = (logMessage : string) => {
	const context = UTSAndroid.getAppContext();
	// 获取应用的私有外部存储目录  
	const externalFilesDir = context!!.getExternalFilesDir(null); // type为null表示根目录  
	if (externalFilesDir == null) {
		// 外部存储不可用或未挂载  
		return;
	}

	// 指定放在 应用的私有外部存储目录/Logs 目录中
	const logDir = new File(externalFilesDir, `Logs`);
	if (!logDir.exists()) {
		logDir.mkdirs();
	}

	const nowDay = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()).format(new Date());
	const fileName = `${nowDay}_${LOG_DISPLAY_NAME}`;
	const logFile = new File(logDir, fileName);
	try {
		const fos = new FileOutputStream(logFile, true)
		const oStreamWriter = OutputStreamWriter(fos, 'UTF-8')
		oStreamWriter.append(createMessage(logMessage));
		oStreamWriter.close()
	} catch (e) {
		console.log(e);
	}
}