GitNex-Android-App/app/src/main/java/org/mian/gitnex/activities/ProfileActivity.java

package org.mian.gitnex.activities;

import android.content.Intent;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.viewpager2.adapter.FragmentStateAdapter;
import androidx.viewpager2.widget.ViewPager2;
import com.google.android.material.tabs.TabLayout;
import com.google.android.material.tabs.TabLayoutMediator;
import com.google.gson.JsonElement;
import org.mian.gitnex.R;
import org.mian.gitnex.clients.RetrofitClient;
import org.mian.gitnex.fragments.BottomSheetUserProfileFragment;
import org.mian.gitnex.fragments.profile.DetailFragment;
import org.mian.gitnex.fragments.profile.FollowersFragment;
import org.mian.gitnex.fragments.profile.FollowingFragment;
import org.mian.gitnex.fragments.profile.OrganizationsFragment;
import org.mian.gitnex.fragments.profile.RepositoriesFragment;
import org.mian.gitnex.fragments.profile.StarredRepositoriesFragment;
import org.mian.gitnex.helpers.Authorization;
import org.mian.gitnex.helpers.Toasty;
import java.util.Objects;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

/**
 * Author M M Arif
 */

public class ProfileActivity extends BaseActivity implements BottomSheetUserProfileFragment.BottomSheetListener {

	private String username;
	private boolean following;

	@Override
	public void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_profile);
		Intent profileIntent = getIntent();
		Typeface myTypeface;

		Toolbar toolbar = findViewById(R.id.toolbar);
		TextView toolbarTitle = findViewById(R.id.toolbarTitle);

		if(profileIntent.getStringExtra("username") != null && !Objects.equals(profileIntent.getStringExtra("username"), "")) {
			username = profileIntent.getStringExtra("username");
		}
		else {
			Toasty.warning(ctx, ctx.getResources().getString(R.string.userInvalidUserName));
			finish();
		}

		setSupportActionBar(toolbar);
		Objects.requireNonNull(getSupportActionBar()).setTitle(username);
		getSupportActionBar().setDisplayHomeAsUpEnabled(true);

		ViewPager2 viewPager = findViewById(R.id.profileContainer);
		viewPager.setOffscreenPageLimit(1);
		TabLayout tabLayout = findViewById(R.id.tabs);

		switch(tinyDB.getInt("customFontId", -1)) {
			case 0:
				myTypeface = Typeface.createFromAsset(ctx.getAssets(), "fonts/roboto.ttf");
				break;
			case 2:
				myTypeface = Typeface.createFromAsset(ctx.getAssets(), "fonts/sourcecodeproregular.ttf");
				break;
			default:
				myTypeface = Typeface.createFromAsset(ctx.getAssets(), "fonts/manroperegular.ttf");
				break;
		}

		toolbarTitle.setTypeface(myTypeface);
		toolbarTitle.setText(username);

		viewPager.setAdapter(new ViewPagerAdapter(this));

		String[] tabTitles = {ctx.getResources().getString(R.string.tabTextInfo), ctx.getResources().getString(R.string.navRepos), ctx.getResources().getString(R.string.navStarredRepos), ctx.getResources().getString(R.string.navOrg), ctx.getResources().getString(R.string.profileTabFollowers), ctx.getResources().getString(R.string.profileTabFollowing)};
		new TabLayoutMediator(tabLayout, viewPager, (tab, position) -> tab.setText(tabTitles[position])).attach();

		ViewGroup vg = (ViewGroup) tabLayout.getChildAt(0);
		int tabsCount = vg.getChildCount();

		for (int j = 0; j < tabsCount; j++) {

			ViewGroup vgTab = (ViewGroup) vg.getChildAt(j);
			int tabChildCount = vgTab.getChildCount();

			for (int i = 0; i < tabChildCount; i++) {
				View tabViewChild = vgTab.getChildAt(i);
				if (tabViewChild instanceof TextView) {
					((TextView) tabViewChild).setTypeface(myTypeface);
				}
			}

			if(!username.equals(tinyDB.getString("userLogin"))) {
				checkFollowStatus();
			}
		}
	}

	@Override
	public void onButtonClicked(String text) {
		if(text.equals("follow")) {
			followUnfollow();
		}
	}

	private void checkFollowStatus() {
		RetrofitClient.getApiInterface(this).checkFollowing(Authorization.get(this), username).enqueue(new Callback<JsonElement>() {

			@Override
			public void onResponse(@NonNull Call<JsonElement> call, @NonNull Response<JsonElement> response) {
				if(response.code() == 204) {
					following = true;
				}
				else if(response.code() == 404) {
					following = false;
				}
				else {
					following = false;
				}
			}

			@Override
			public void onFailure(@NonNull Call<JsonElement> call, @NonNull Throwable t) {
				following = false;
			}
		});
	}

	private void followUnfollow() {
		Call<JsonElement> call;
		if (following) {
			call = RetrofitClient.getApiInterface(this).unfollowUser(Authorization.get(this), username);
		}
		else {
			call = RetrofitClient.getApiInterface(this).followUser(Authorization.get(this), username);
		}

		call.enqueue(new Callback<JsonElement>() {

			@Override
			public void onResponse(@NonNull Call<JsonElement> call, @NonNull Response<JsonElement> response) {
				if (response.isSuccessful()) {
					following = !following;
					if (following) {
						Toasty.success(ProfileActivity.this, String.format(getString(R.string.nowFollowUser), username));
					}
					else {
						Toasty.success(ProfileActivity.this, String.format(getString(R.string.unfollowedUser), username));
					}
				} else {
					if (following) {
						Toasty.error(ProfileActivity.this, getString(R.string.unfollowingFailed));
					}
					else {
						Toasty.error(ProfileActivity.this, getString(R.string.followingFailed));
					}
				}
			}

			@Override
			public void onFailure(@NonNull Call<JsonElement> call, @NonNull Throwable t) {
				if (following) {
					Toasty.error(ProfileActivity.this, getString(R.string.unfollowingFailed));
				}
				else {
					Toasty.error(ProfileActivity.this, getString(R.string.followingFailed));
				}
			}
		});
	}

	public class ViewPagerAdapter extends FragmentStateAdapter {

		public ViewPagerAdapter(@NonNull FragmentActivity fa) { super(fa); }

		@NonNull
		@Override
		public Fragment createFragment(int position) {
			switch(position) {
				case 0: // detail
					return DetailFragment.newInstance(username);
				case 1: // repos
					return RepositoriesFragment.newInstance(username);
				case 2: // starred repos
					return StarredRepositoriesFragment.newInstance(username);
				case 3: // organizations
					return OrganizationsFragment.newInstance(username);
				case 4: // followers
					return FollowersFragment.newInstance(username);
				case 5: // following
					return FollowingFragment.newInstance(username);
			}
			return null;
		}

		@Override
		public int getItemCount() {
			return 6;
		}
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {

		int id = item.getItemId();

		if(id == android.R.id.home) {
			finish();
			return true;
		}
		else if(id == R.id.genericMenu) {
			new BottomSheetUserProfileFragment(following).show(getSupportFragmentManager(), "userProfileBottomSheet");
			return true;
		}
		else {
			return super.onOptionsItemSelected(item);
		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		if(!username.equals(tinyDB.getString("userLogin"))) {
			getMenuInflater().inflate(R.menu.generic_nav_dotted_menu, menu);
		}
		return super.onCreateOptionsMenu(menu);
	}

}