package com.ltd.benoa.contactlister;

import android.Manifest;
import android.content.ContentResolver;
import android.database.Cursor;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.util.Log;
import android.widget.TextView;

import com.vistrav.ask.Ask;
import com.vistrav.ask.annotations.AskDenied;
import com.vistrav.ask.annotations.AskGranted;

public class MainActivity extends AppCompatActivity  {

    private TextView listContacts;

    private static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //askForPermissions;
        Ask.on(this)
                .forPermissions(Manifest.permission.READ_CONTACTS)
                .go();

        listContacts = findViewById(R.id.listContacts);
        listContacts.setMovementMethod(new ScrollingMovementMethod());
        listContacts.setText(loadContacts());
    }

    //optional
    @AskGranted(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    public void fileAccessGranted(int id) {
        Log.i(TAG, "FILE  GRANTED");
    }

    //optional
    @AskDenied(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    public void fileAccessDenied(int id) {
        Log.i(TAG, "FILE  DENiED");
    }

    //optional
    @AskGranted(Manifest.permission.ACCESS_COARSE_LOCATION)
    public void mapAccessGranted(int id) {
        Log.i(TAG, "MAP GRANTED");
    }

    //optional
    @AskDenied(Manifest.permission.ACCESS_COARSE_LOCATION)
    public void mapAccessDenied(int id) {
        Log.i(TAG, "MAP DENIED");
    }

    private String loadContacts()
    {
        StringBuilder builder = new StringBuilder();
        ContentResolver cr = getContentResolver();
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI,
                null, null,
                null, null);

        if (cursor.getCount() > 0){
            while (cursor.moveToNext()){
                String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
                String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

                String columns[] = {
                        ContactsContract.CommonDataKinds.Event.START_DATE,
                        ContactsContract.CommonDataKinds.Event.TYPE,
                        ContactsContract.CommonDataKinds.Event.MIMETYPE,
                };

                String where = ContactsContract.CommonDataKinds.Event.TYPE + "=" +
                        ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY +
                        " and " + ContactsContract.CommonDataKinds.Event.MIMETYPE +
                        " = '" + ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE +
                        "' and " + ContactsContract.Data.CONTACT_ID + " = " + id;

                String sortOrder = ContactsContract.CommonDataKinds.Event.START_DATE + " DESC ";

//                Log.i("msg ", sortOrder + "n");

                Cursor birthdayCur = cr.query(ContactsContract.Data.CONTENT_URI, columns, where,
                        null, sortOrder);

                if (birthdayCur.getCount() > 0) {
                    while (birthdayCur.moveToNext()) {
                        String birthday = birthdayCur.getString(birthdayCur.
                                getColumnIndex(ContactsContract.CommonDataKinds.Event.START_DATE));
//                        Log.i("INSIDE THE SEC CURSOR" +
//                                " ", birthday + "n");
                        builder.append("Contact: ").append(name).append(" ").append(birthday).append("nn");
                    }
                }
                birthdayCur.close();
            }
        }
        cursor.close();

        return builder.toString();
    }

}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //askForPermissions;
    Ask.on(this)
            .forPermissions(Manifest.permission.READ_CONTACTS)
            .go();

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.ltd.benoa.contactlister"
        minSdkVersion 19
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile 'com.vistrav:ask:2.5'
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}

<?xml version="1.0" encoding="utf-8"?>

<uses-permission android:name="android.permission.READ_CONTACTS" />

String sortOrder = ContactsContract.CommonDataKinds.Event.START_DATE + " DESC ";