package com.someone.sendsms;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.telephony.SmsManager;
import com.facebook.react.bridge.Callback;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;



public class SendSMS extends ReactContextBaseJavaModule {
    private final ReactApplicationContext reactContext;
    private Callback callback = null;

    public SendSMS(ReactApplicationContext reactContext) {
        super(reactContext);
        this.reactContext = reactContext;
    }

    @Override
    public String getName() {
        return "SendSMS";
    }

    private void sendCallback(Integer messageId, String message){
        if (callback != null) {
            callback.invoke(message);
            callback = null;
        }
    }

    //---sends an SMS message to another device---
    @ReactMethod
    public void send(final Integer messageId, String phoneNumber, String message, final Callback cb ){

        try{

            this.callback = cb;
            String SENT = "SMS_SENT";
            String DELIVERED = "SMS_DELIVERED";

            PendingIntent sentPI = PendingIntent.getBroadcast(reactContext, 0,
                    new Intent(SENT), 0);

            PendingIntent deliveredPI = PendingIntent.getBroadcast(reactContext, 0,
                    new Intent(DELIVERED), 0);

            //---when the SMS has been sent---
            reactContext.registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            sendCallback(messageId, "Sent");
                            break;
                        case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                            sendCallback(messageId, "Generic failure");
                            break;
                        case SmsManager.RESULT_ERROR_NO_SERVICE:
                            sendCallback(messageId, "No Service");
                            break;
                        case SmsManager.RESULT_ERROR_NULL_PDU:
                            sendCallback(messageId, "Null PDU");
                            break;
                        case SmsManager.RESULT_ERROR_RADIO_OFF:
                            sendCallback(messageId, "Radio off");
                            break;
                    }
                }
            }, new IntentFilter(SENT));

            //---when the SMS has been delivered---
            reactContext.registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            System.out.println("SMS delivered");
                            sendCallback(messageId, "SMS delivered");
                            break;
                        case Activity.RESULT_CANCELED:
                            System.out.println("SMS not delivered");
                            sendCallback(messageId, "SMS not delivered");
                            break;
                    }
                }
            }, new IntentFilter(DELIVERED));

            SmsManager.getSmsManagerForSubscriptionId(messageId).sendTextMessage(phoneNumber,null,
            message, sentPI, deliveredPI);

        }catch (Exception e) {

            sendCallback(messageId, "Unknown error");
            throw e;

        }

    }

}