package com.example.sean.asnsmsapp;
import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.os.Build;
import android.provider.ContactsContract;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    ListView listView ;
    List<Contact> contactList = new ArrayList<Contact>();
    ArrayAdapter<String> arrayAdapter ;
    Cursor cursor ;
    String name, phonenumber ;
    public static final int RequestPermissionCode  = 1 ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        listView = (ListView)findViewById(R.id.lvContacts);

        EnableRuntimePermission();

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                Intent intent = new Intent(MainActivity.this,SMSActivity.class);
                //intent.putExtra("CONTACT", contactList.get(position));
                startActivity(intent);
            }
        });
    }

    public void GetContactsIntoArrayList(){

        cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null, null, null);

        while (cursor.moveToNext()) {

            name = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
            phonenumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

            String contactName = name;
            String contactNum = phonenumber;
            contactNum = contactNum.replaceAll("\\s+","");
            contactNum = contactNum.replace("-", "");
            boolean contactExists = false;
            for(int i = 0; i<contactList.size(); i++)
            {
                Contact objContact = contactList.get(i);
                String contactNumber = objContact.getContactNum();
                contactNumber = contactNumber.replaceAll("\\s+","");
                contactNumber = contactNumber.replace("-", "");
                if(contactNumber.equals(contactNum))
                {
                    contactExists = true;
                    break;
                }
            }
            if(!contactExists) {
                contactList.add(new Contact(contactName, contactNum));
            }
        }
        cursor.close();
    }

    public void EnableRuntimePermission(){
        if (ActivityCompat.checkSelfPermission(getBaseContext(), Manifest.permission.READ_CONTACTS)
           != PackageManager.PERMISSION_GRANTED
           || ActivityCompat.checkSelfPermission(getBaseContext(), Manifest.permission.READ_SMS)
           != PackageManager.PERMISSION_GRANTED) {

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                    //ask user for permission if Android Os is newer than Lollipop
                    requestPermissions(new String[]{Manifest.permission.READ_CONTACTS,
                            Manifest.permission.READ_SMS}, RequestPermissionCode);
                } else {
                    Toast.makeText(MainActivity.this,"Permission denied. Change settings manually", Toast.LENGTH_LONG).show();
                }
        }
        else{
            setContactList(contactList);
        }
    }

    protected void setContactList(List<Contact> contacts) {
        GetContactsIntoArrayList();
        Collections.sort(contactList, new Comparator<Contact>() {
            @Override
            public int compare(Contact contact, Contact t1) {
                return contact.getContactName().compareToIgnoreCase(t1.getContactName());
            }
        });
        ListView listView = (ListView)findViewById(R.id.lvContacts);
        listView.setAdapter(new ContactListAdapter(this, R.layout.listviewtemplate, contacts));
    }

    @Override
    public void onRequestPermissionsResult(int RC, String permissions[], int[] PResult) {
        switch (RC) {
            case RequestPermissionCode:
                if (PResult.length > 0 && PResult[0] == PackageManager.PERMISSION_GRANTED) {
                    setContactList(contactList);
                } else {
                    Toast.makeText(MainActivity.this,"Permission denied. Change settings manually", Toast.LENGTH_LONG).show();
                }
                break;
        }
    }


}