package com.marko.horvat.telephonprobni;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private static final String TEL_PREFIX = "tel:";
    private static final int RECEIVE_SMS_PERMISSION = 1;
    private static final int SMS_REQUEST_CODE = 3;
    private static final int REQUEST_CALL = 4;

    private Button bPrepareSms;
    private Button bSendSms;
    private Button bCall;
    private Button bDial;
    private EditText etNumber;
    private EditText etBody;

    private String telBroj;

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

        initWidgets();
        setupListeners();
        checkReceiveSmsPermission();
    }

    private void initWidgets() {
        bCall = findViewById(R.id.bCall);
        bDial = findViewById(R.id.bDial);
        bPrepareSms = findViewById(R.id.bPrepareSms);
        bSendSms = findViewById(R.id.bSendSms);

        etBody = findViewById(R.id.etPoruka);
        etNumber = findViewById(R.id.etBroj);
    }





    private void setupListeners() {
        bCall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                makeCall();

            }
        });



        bDial.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if (hasNumber()) {
                    telBroj = TEL_PREFIX + etNumber.getText().toString();
                    Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(telBroj));
                    startActivity(intent);
                }

            }
        });

        bPrepareSms.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if (hasNumber() && hasText()) {

                    Intent intent = new Intent(Intent.ACTION_VIEW);
                    intent.putExtra("address", etNumber.getText().toString());
                    intent.putExtra("sms_body", etBody.getText().toString());
                    intent.setType("vnd.android-dir/mms-sms");

                    try {
                        startActivity(intent);
                    } catch (Exception e) {
                        Toast.makeText(MainActivity.this, "Aplikaicja ne postoji", Toast.LENGTH_SHORT).show();
                    }

                }

            }
        });

        bSendSms.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                SmsManager smsManager = SmsManager.getDefault();

                if (hasNumber() && hasText()) {

                    if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.SEND_SMS)
                            == PackageManager.PERMISSION_GRANTED) {
                        smsManager.sendTextMessage(etNumber.getText().toString(), null, etBody.getText().toString(), null, null);
                        Toast.makeText(MainActivity.this, "SMS sent", Toast.LENGTH_SHORT).show();
                        etNumber.setText("");
                        etBody.setText("");

                    } else {
                        ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.SEND_SMS},
                                SMS_REQUEST_CODE);

                    }

                }
            }
        });
    }




    private void makeCall() {

        String phoneNumber = TEL_PREFIX + etNumber.getText().toString();

        if (hasNumber()) {
            Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(phoneNumber));

            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE)
                    != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(MainActivity.this,
                        new String[]{Manifest.permission.CALL_PHONE}, REQUEST_CALL);

            } else {
                startActivity(intent);
            }

        }

    }




    private boolean checkReceiveSmsPermission() {

        if (ActivityCompat.checkSelfPermission(
                this, Manifest.permission.RECEIVE_SMS) == PackageManager.PERMISSION_GRANTED) {
            return true;
        } else {
            ActivityCompat.requestPermissions(
                    this, new String[]{Manifest.permission.RECEIVE_SMS},
                    RECEIVE_SMS_PERMISSION);
            return false;

        }

    }




    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

        if (requestCode == REQUEST_CALL) {

            if (grantResults.length >= 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                makeCall();
            } else {
                Toast.makeText(this, "Permission DENIED", Toast.LENGTH_SHORT).show();
            }
        }

    }



    private boolean hasNumber() {
        if (etNumber.getText().length() == 0) {
            Toast.makeText(this, "Unesite broj telefona", Toast.LENGTH_SHORT).show();
            return false;
        }
        return true;
    }

    private boolean hasText() {
        if (etBody.getText().length() == 0) {
            Toast.makeText(this, "Unesite poruku ", Toast.LENGTH_SHORT).show();
            return false;
        }
        return true;
    }

}