package com.example.dylanazzopardi.sms_application_v20;

import android.Manifest;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.design.widget.Snackbar;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    SmsManager smsManager = SmsManager.getDefault();
    Button btnSend;
    Snackbar sb;
    EditText txtNumber;
    EditText sendText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnSend = (Button) findViewById(R.id.btnSend);
        sendText = (EditText) findViewById(R.id.txtText);
        txtNumber = (EditText) findViewById(R.id.txtNumber);

        this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

        sb = Snackbar.make(findViewById(android.R.id.content), "You are not connected to the internet", Snackbar.LENGTH_INDEFINITE);

        getPermissionToReadSMS();

        //onReceive(this,MainActivity);


        btnSend.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                onSendClick(view);
            }
        });
    }

    private BroadcastReceiver networkReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
                NetworkInfo networkInfo = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
                if (networkInfo != null && networkInfo.getDetailedState() == NetworkInfo.DetailedState.CONNECTED) {
                    if(sb != null)
                    {
                        sb.dismiss();
                    }
                } else if (networkInfo != null && networkInfo.getDetailedState() == NetworkInfo.DetailedState.DISCONNECTED)
                {
                    sb.show();
                }
            }
        }
    };

    @Override
    protected void onResume() {
        super.onResume();
        IntentFilter intentFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
        registerReceiver(networkReceiver, intentFilter);
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (networkReceiver != null)
            unregisterReceiver(networkReceiver);
    }

    private static final int READ_SMS_PERMISSIONS_REQUEST = 1;

    public void getPermissionToReadSMS() {
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_SMS)
                != PackageManager.PERMISSION_GRANTED) {
            if (shouldShowRequestPermissionRationale(
                    Manifest.permission.READ_SMS)) {
                Toast.makeText(this, "Please allow permission!", Toast.LENGTH_SHORT).show();
            }
            requestPermissions(new String[]{Manifest.permission.READ_SMS},
                    READ_SMS_PERMISSIONS_REQUEST);
        }
    }


    public void onSendClick(View view) {

        if (ContextCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS)
                != PackageManager.PERMISSION_GRANTED)
        {
            getPermissionToReadSMS();
        }
        else
        {
            smsManager.sendTextMessage(txtNumber.getText().toString(),null,sendText.getText().toString(),null,null);
            Toast.makeText(this, "Message sent!", Toast.LENGTH_SHORT).show();
        }
    }
}