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 ScanManager from 'android.device.ScanManager';
import PropertyID from 'android.device.scanner.configuration.PropertyID';

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

export default class ScanBroadcastReceiver {
	private static instance : ScanBroadcastReceiver = new ScanBroadcastReceiver();
	
	private context : Context | null = null;
	
	private scanBroadcastReceiver: UrovoScanBroadcastReceiver | null = null;
	
	private scanManager: ScanManager | null = null;
	
	private intentFilter: IntentFilter | null = null;
	
	private constructor() {
	}
	
	static getInstance(context : Context | null) : ScanBroadcastReceiver {
		ScanBroadcastReceiver.instance.context = context;
		return ScanBroadcastReceiver.instance;
	}
	
	registerReceiver(callback: OnScanReceiverCallback) {
		this.scanBroadcastReceiver = new UrovoScanBroadcastReceiver(callback);
		if(this.scanManager == null) {
			this.scanManager = new ScanManager();
			this.scanManager!.openScanner();
			this.scanManager!.switchOutputMode(0);
		}
		this.intentFilter = new IntentFilter();
		let idbuf = intArrayOf(PropertyID.WEDGE_INTENT_ACTION_NAME, PropertyID.WEDGE_INTENT_DATA_STRING_TAG);
		let value_buf = this.scanManager!.getParameterString(idbuf);
		if (value_buf != null && value_buf[0] != null && !value_buf[0].equals("")) {
			this.intentFilter!.addAction(value_buf[0]);
		} else {
			this.intentFilter!.addAction(ScanManager.ACTION_DECODE);
		}
		//this.intentFilter!.addAction(ScanManager.ACTION_CAPTURE_IMAGE);

		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.scanManager != null){
			this.scanManager?.stopDecode();
		}
		
		this.scanBroadcastReceiver = null;
	}
}

class UrovoScanBroadcastReceiver extends BroadcastReceiver {

	private callback: OnScanReceiverCallback;
	
	constructor(callback: OnScanReceiverCallback) {
		super();		
		this.callback = callback;
	}
	
	override onReceive(context : Context, intent : Intent) {   
		let barcode = intent.getByteArrayExtra(ScanManager.DECODE_DATA_TAG);
		let barcodelen = intent.getIntExtra(ScanManager.BARCODE_LENGTH_TAG, 0);
		let temp = intent.getByteExtra(ScanManager.BARCODE_TYPE_TAG, 0);
		console.log("----codetype--:" + temp);
		if(barcode != null) {
			let barcodeStr : string = new String(barcode, 0, barcodelen.toInt());
			this.callback(barcodeStr);
		}
		
	}
}