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import android.annotation.SuppressLint;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;

import java.util.Stack;

import ir.madlearn.app.jedarapp.R;
import ir.madlearn.app.jedarapp.model.helper.LanguageHelper;
import ir.madlearn.app.jedarapp.view.activity_main.add_ads.FragmentAddAds;
import ir.madlearn.app.jedarapp.view.activity_main.category.FragmentCategory;
import ir.madlearn.app.jedarapp.view.activity_main.chat.FragmentChat;
import ir.madlearn.app.jedarapp.view.activity_main.home.FragmentHome;
import ir.madlearn.app.jedarapp.view.activity_main.profile.FragmentProfile;

public class ActivityMain extends AppCompatActivity {

    @SuppressLint("StaticFieldLeak")
    public static AppCompatActivity activity;

    public static Fragment currentFragment;

    private static Stack<Fragment> fragmentStack = new Stack<>();

    @SuppressLint("StaticFieldLeak")
    private static BottomNavigationView bottomNavigation;
    private static boolean customSelectItem = false;

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

        activity = this;

        initBottomNavigation();

        initHomeFragment();
    }

    @Override
    public void onBackPressed() {
        if (fragmentStack.empty()) {
            super.onBackPressed();
        } else {
            Fragment fragment = fragmentStack.pop();
            replaceContentWith(fragment, false);
            setSelectedBottomNavItem();
        }
    }

    public static void replaceContentWith(final Fragment fragment, boolean mustAddToStack) {
        if (mustAddToStack) {
            fragmentStack.push(currentFragment);
        }

        activity.getSupportFragmentManager().beginTransaction()
                .replace(R.id.contentMain, currentFragment = fragment)
                .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
                .commit();
    }

    /////// Home fragment

    private void initHomeFragment() {
        currentFragment = new FragmentHome();
        replaceContentWith(currentFragment, false);
    }

    /////// Bottom navigation

    private void initBottomNavigation() {
        BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
                = new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.navigation_home:
                        if (customSelectItem){
                            customSelectItem = false;
                            return true;
                        }
                        replaceContentWith(new FragmentHome(), true);
                        return true;
                    case R.id.navigation_category:
                        if (customSelectItem){
                            customSelectItem = false;
                            return true;
                        }
                        replaceContentWith(new FragmentCategory(), true);
                        return true;
                    case R.id.navigation_add:
                        if (customSelectItem){
                            customSelectItem = false;
                            return true;
                        }
                        replaceContentWith(new FragmentAddAds(), true);
                        return true;
                    case R.id.navigation_chat:
                        if (customSelectItem){
                            customSelectItem = false;
                            return true;
                        }
                        replaceContentWith(new FragmentChat(), true);
                        return true;
                    case R.id.navigation_profile:
                        if (customSelectItem){
                            customSelectItem = false;
                            return true;
                        }
                        replaceContentWith(new FragmentProfile(), true);
                        return true;
                }
                return false;
            }
        };

        bottomNavigation = findViewById(R.id.navigation);
        bottomNavigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
    }

    private static void setSelectedBottomNavItem() {
        customSelectItem = true;
        if (currentFragment instanceof FragmentHome) {
            bottomNavigation.setSelectedItemId(R.id.navigation_home);
        } else if (currentFragment instanceof FragmentCategory) {
            bottomNavigation.setSelectedItemId(R.id.navigation_category);
        } else if (currentFragment instanceof FragmentAddAds) {
            bottomNavigation.setSelectedItemId(R.id.navigation_add);
        } else if (currentFragment instanceof FragmentChat) {
            bottomNavigation.setSelectedItemId(R.id.navigation_chat);
        } else if (currentFragment instanceof FragmentProfile) {
            bottomNavigation.setSelectedItemId(R.id.navigation_profile);
        }
    }
}