package com.fullproject.beanibazarhelpline.intro;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;

import com.fullproject.beanibazarhelpline.R;
import com.fullproject.beanibazarhelpline.model.ScreenItem;
import com.fullproject.beanibazarhelpline.categories.CategoriesActivity;

import java.util.ArrayList;
import java.util.List;

public class IntroActivity extends AppCompatActivity {

    private ViewPager mViewPager;
    private IntroViewPagerAdapter mIntroViewPagerAdapter;
    private List<ScreenItem> mScreenItemList;
    private TabLayout mTabIndicator;

    private Button mNextButton;
    private Button mGetStartedBtn;

    int position = 0;

    Animation mBtnAnimation;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setTheme(R.style.AppTheme);
        super.onCreate(savedInstanceState);

        //make the activity full screen remove status bar
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        //when the activity is about to lunch
        //we need to check boolean value true or false and this activity is opened before or not
        if (restorePrefData()) {
            Intent intent = new Intent(getApplicationContext(), CategoriesActivity.class);
            startActivity(intent);
            finish();
        }

        setContentView(R.layout.activity_intro);

        //init views
        mGetStartedBtn = findViewById(R.id.btn_getStarted);
        mNextButton = findViewById(R.id.btn_next);
        mTabIndicator = findViewById(R.id.tab_indicator);
        mBtnAnimation = AnimationUtils.loadAnimation(getApplicationContext(), R.anim.button_animation);

        //fill list screen
        mScreenItemList = new ArrayList<>();
        mScreenItemList.add(new ScreenItem(getResources().getString(R.string.needElectrician), getResources().getString(R.string.demoText), R.drawable.electrician));
        mScreenItemList.add(new ScreenItem(getResources().getString(R.string.needPlumber), getResources().getString(R.string.demoText), R.drawable.plumber));
        mScreenItemList.add(new ScreenItem(getResources().getString(R.string.needBuilder), getResources().getString(R.string.demoText), R.drawable.construction));

        mIntroViewPagerAdapter = new IntroViewPagerAdapter(this, mScreenItemList);
        //setup viewpager
        mViewPager = findViewById(R.id.intro_viewpager);
        mViewPager.setAdapter(mIntroViewPagerAdapter);

        //setup tablayout with viewpager
        mTabIndicator.setupWithViewPager(mViewPager);

        //next button
        mNextButton.setOnClickListener(v -> {
            position = mViewPager.getCurrentItem();

            if (position < mScreenItemList.size()) {
                position++;
                mViewPager.setCurrentItem(position);
            }

            //when we reacher last screen
            if (position == mScreenItemList.size() - 1) {
                //todo : show GETSTARTED button and hide the indicator also next button
                loadLastScreen();
            }
        });

        //tab layout change listener
        mTabIndicator.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
            @Override
            public void onTabSelected(TabLayout.Tab tab) {
                if (tab.getPosition() == mScreenItemList.size() - 1) {
                    loadLastScreen();
                } else {
                    mNextButton.setVisibility(View.VISIBLE);
                    mGetStartedBtn.setVisibility(View.INVISIBLE);
                    mTabIndicator.setVisibility(View.VISIBLE);
                }
            }

            @Override
            public void onTabUnselected(TabLayout.Tab tab) {

            }

            @Override
            public void onTabReselected(TabLayout.Tab tab) {

            }
        });

        //getstarted button clicked
        mGetStartedBtn.setOnClickListener(v -> {
            //open category activity
            startActivity(new Intent(IntroActivity.this, CategoriesActivity.class));

            //we have to save a boolean value to storage so next time when the user run the app
            //we could know that he is already chaked the intro activity
            //use shared pref for that
            savePrefData();
            finish();


        });

    }

    private boolean restorePrefData() {
        SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("mypref", MODE_PRIVATE);
        Boolean inIntroActivityOpenedBefore = sharedPreferences.getBoolean("isIntroOpened", false);
        return inIntroActivityOpenedBefore;
    }

    private void savePrefData() {
        SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences("mypref", MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();
        editor.putBoolean("isIntroOpened", true);
        editor.apply();
    }

    //show GETSTARTED button and hide the indicator also next button
    private void loadLastScreen() {

        mNextButton.setVisibility(View.INVISIBLE);
        mGetStartedBtn.setVisibility(View.VISIBLE);
        mTabIndicator.setVisibility(View.INVISIBLE);

        //todo: add an animation to getstarted button
        mGetStartedBtn.setAnimation(mBtnAnimation);

    }
}