package cn.shuto.plugin.redlightscan;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.util.Log;

import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.CordovaWebView;
import org.apache.cordova.CordovaInterface;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.PluginResult;

import org.json.JSONArray;
import org.json.JSONException;

import com.hdhe.scan.ScanUtil;

/**
 * 红光扫码
 */
public class RedLightScan extends CordovaPlugin {
    private static String TAG = RedLightScan.class.getSimpleName();
    private ScanUtil scanUtil;
    private CallbackContext callbackContext;
    private boolean receiverRegisted = false;

    // BroadcastReceiver to receiver scan data
    private BroadcastReceiver receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (callbackContext == null) {
              return;
            }
            byte[] data = intent.getByteArrayExtra("data");
            if (data != null) {
                String barcode = new String(data);
                PluginResult result = new PluginResult(PluginResult.Status.OK, barcode);
                result.setKeepCallback(true);
                callbackContext.sendPluginResult(result);
            }
        }
    };

    @Override
    public void initialize(CordovaInterface cordova, CordovaWebView webView) {
        super.initialize(cordova, webView);
    }

    @Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
        this.callbackContext = callbackContext;
        switch (action) {
            case "startScan":
                this.startScan();
                break;
            case "stopScan":
                this.stopScan();
                callbackContext.success();
                break;
            case "registerReceiver":
                this.registerReceiver();
                break;
            case "unregisterReceiver":
                this.unregisterReceiver();
                callbackContext.success();
                break;
            default:
                callbackContext.error("UNKNOWN command: " + action);
                return false;
        }
        return true;
    }

    private void startScan() {
        if (scanUtil != null) {
            scanUtil.scan();
        }
    }

    private void stopScan() {
        if (scanUtil != null) {
            scanUtil.stopScan();
        }
    }

    private void registerReceiver() {
        Log.d(TAG, "RedLightScan registerReceiver");
        scanUtil = new ScanUtil(cordova.getActivity());
        //we must set mode to 0 : BroadcastReceiver mode
        scanUtil.setScanMode(0);
        IntentFilter filter = new IntentFilter();
        filter.addAction("com.rfid.SCAN");
        webView.getContext().registerReceiver(receiver, filter);
        this.receiverRegisted = true;
        this.startScan();
        Log.d(TAG, "RedLightScan receiver registed");
    }

    private void unregisterReceiver() {
        Log.d(TAG, "RedLightScan unregisterReceiver");
        if (scanUtil != null) {
            scanUtil.setScanMode(1);
            scanUtil.close();
            scanUtil = null;
        }
        if (this.receiverRegisted) {
            webView.getContext().unregisterReceiver(receiver);
            this.receiverRegisted = false;
            Log.d(TAG, "RedLightScan receiver unregisted");
        }
    }

    @Override
    public void onDestroy() {
        Log.d(TAG, "RedLightScan Destroy");
        super.onDestroy();
        this.unregisterReceiver();
    }

}