import Activity from 'android.app.Activity';
import IntentFilter from 'android.content.IntentFilter';
import BroadcastReceiver from 'android.content.BroadcastReceiver';
import Context from 'android.content.Context';
import Intent from 'android.content.Intent';

import { OnScanReceiverCallback } from '../../interface.uts';

export default class ScanBroadcastReceiver {
	
	private static instance : ScanBroadcastReceiver = new ScanBroadcastReceiver();
	
	private context : Context | null = null;
	
	private scanBroadcastReceiver: ChainwayScanBroadcastReceiver | null = null;
	
	private intentFilter: IntentFilter | null = null;
	
	private isOpenScan: boolean = false;
	
	private constructor() {
	}
	
	static getInstance(context : Context | null) : ScanBroadcastReceiver {
		ScanBroadcastReceiver.instance.context = context;
		return ScanBroadcastReceiver.instance;
	}
	
	registerReceiver(callback: OnScanReceiverCallback) {
		this.scanBroadcastReceiver = new ChainwayScanBroadcastReceiver(callback);
		if(this.isOpenScan == false) {
			this.isOpenScan = true;
		}
		this.intentFilter = new IntentFilter();
		this.intentFilter!.addCategory(Intent.CATEGORY_DEFAULT);
		this.intentFilter!.addAction("com.infowedge.data");

		UTSAndroid.getUniActivity()!.registerReceiver(this.scanBroadcastReceiver, this.intentFilter);
	}
	
	unregisterReceiver () {
		let uniActivity: Activity | null = UTSAndroid.getUniActivity();
		if(this.scanBroadcastReceiver != null) {
			uniActivity!.unregisterReceiver(this.scanBroadcastReceiver);
		}
		
		//停止扫描
		if (this.isOpenScan){
			this.isOpenScan = false;
		}
		
		this.scanBroadcastReceiver = null;
	}
}

class ChainwayScanBroadcastReceiver extends BroadcastReceiver {

	private callback: OnScanReceiverCallback;
	
	constructor(callback: OnScanReceiverCallback) {
		super();		
		this.callback = callback;
	}
	
	override onReceive(context : Context, intent : Intent) {
		let action  = intent.getAction();
		if(action == "com.infowedge.data") {
			//let result = intent.getIntExtra("result", -1);
			//console.log("result: " + result);
			let data = intent.getStringExtra("data_string");
			//let decode_data = intent.getByteArrayExtra("decode_data");
			//console.log("decode_data: " + decode_data.toString());
			//let symbol = intent.getIntExtra("symbology", -1);
			//console.log("symbol: " + symbol)
			//let time = intent.getIntExtra("decode_time", -1)
			//console.log("time: " + time + "ms");
			if(data != null) {
				this.callback(data);
			}
		}
		
	}
}