fedilab-Android-App/app/src/main/java/app/fedilab/android/activities/InstanceActivity.java

package app.fedilab.android.activities;
/* Copyright 2022 Thomas Schneider
 *
 * This file is a part of Fedilab
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with Fedilab; if not,
 * see <http://www.gnu.org/licenses>. */


import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.text.Html;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.ForegroundColorSpan;
import android.text.style.UnderlineSpan;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.lifecycle.ViewModelProvider;
import androidx.preference.PreferenceManager;

import com.bumptech.glide.Glide;
import com.bumptech.glide.request.target.CustomTarget;
import com.bumptech.glide.request.transition.Transition;

import app.fedilab.android.BaseMainActivity;
import app.fedilab.android.R;
import app.fedilab.android.client.entities.api.Instance;
import app.fedilab.android.databinding.ActivityInstanceBinding;
import app.fedilab.android.helper.Helper;
import app.fedilab.android.helper.ThemeHelper;
import app.fedilab.android.viewmodel.mastodon.InstancesVM;


public class InstanceActivity extends BaseAlertDialogActivity {


    ActivityInstanceBinding binding;
    private boolean applyMaxChar = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityInstanceBinding.inflate(getLayoutInflater());

        setContentView(binding.getRoot());

        getWindow().setLayout(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        if (getSupportActionBar() != null)
            getSupportActionBar().hide();
        SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(InstanceActivity.this);


        final SpannableString contentAbout = new SpannableString(getString(R.string.action_about_instance));
        contentAbout.setSpan(new UnderlineSpan(), 0, contentAbout.length(), 0);
        contentAbout.setSpan(new ForegroundColorSpan(ThemeHelper.getAttColor(this, R.attr.colorPrimary)), 0, contentAbout.length(),
                Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
        binding.tos.setText(contentAbout);

        final SpannableString contentPrivacy = new SpannableString(getString(R.string.action_privacy_policy));
        contentPrivacy.setSpan(new UnderlineSpan(), 0, contentPrivacy.length(), 0);
        contentPrivacy.setSpan(new ForegroundColorSpan(ThemeHelper.getAttColor(this, R.attr.colorPrimary)), 0, contentPrivacy.length(),
                Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
        binding.privacy.setText(contentPrivacy);

        binding.tos.setOnClickListener(v -> Helper.openBrowser(InstanceActivity.this, "https://" + MainActivity.currentInstance + "/about"));
        binding.privacy.setOnClickListener(v -> Helper.openBrowser(InstanceActivity.this, "https://" + MainActivity.currentInstance + "/privacy-policy"));
        binding.close.setOnClickListener(

                view -> {
                    if (applyMaxChar) {
                        String max_char = binding.maxChar.getText().toString();

                        SharedPreferences.Editor editor = sharedpreferences.edit();
                        if (!max_char.isEmpty()) {
                            try {
                                editor.putInt(getString(R.string.SET_MAX_INSTANCE_CHAR) + MainActivity.currentInstance, Integer.parseInt(max_char));
                                editor.apply();
                            } catch (Exception ignored) {
                            }
                        }
                    }
                    finish();
                }

        );

        if (getSupportActionBar() != null) {
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
            getSupportActionBar().setDisplayShowHomeEnabled(true);
        }

        InstancesVM instancesVM = new ViewModelProvider(InstanceActivity.this).get(InstancesVM.class);
        instancesVM.getInstance(BaseMainActivity.currentInstance).observe(InstanceActivity.this, instanceInfo -> {
            binding.instanceContainer.setVisibility(View.VISIBLE);
            binding.loader.setVisibility(View.GONE);

            if (instanceInfo == null || instanceInfo.info == null || instanceInfo.info.description == null) {
                binding.maxCharContainer.setVisibility(View.VISIBLE);
                binding.instanceContainer.setVisibility(View.GONE);
                binding.instanceContact.setVisibility(View.GONE);
                int val = sharedpreferences.getInt(getString(R.string.SET_MAX_INSTANCE_CHAR) + MainActivity.currentInstance, -1);
                if (val != -1) {
                    binding.maxChar.setText(String.valueOf(val));
                }
                applyMaxChar = true;

            } else {
                Instance instance = instanceInfo.info;
                binding.instanceTitle.setText(instance.title);
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
                    binding.instanceDescription.setText(Html.fromHtml(instance.description, Html.FROM_HTML_MODE_LEGACY));
                else
                    binding.instanceDescription.setText(Html.fromHtml(instance.description));
                if (instance.description == null || instance.description.trim().length() == 0)
                    binding.instanceDescription.setText(getString(R.string.instance_no_description));
                binding.instanceVersion.setText(instance.version);
                binding.instanceUri.setText(instance.uri);
                if (instance.email == null) {
                    binding.instanceContact.hide();
                }
                Glide.with(InstanceActivity.this)
                        .asDrawable()
                        .load(instance.thumbnail)
                        .into(new CustomTarget<Drawable>() {
                            @Override
                            public void onResourceReady(@NonNull Drawable resource, @Nullable Transition<? super Drawable> transition) {
                                binding.background.setAlpha(0.2f);
                                binding.background.setBackground(resource);
                            }

                            @Override
                            public void onLoadCleared(@Nullable Drawable placeholder) {

                            }
                        });

                binding.instanceContact.setOnClickListener(v -> {
                    Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts("mailto", instance.email, null));
                    emailIntent.putExtra(Intent.EXTRA_SUBJECT, "[Mastodon] - " + instance.uri);
                    startActivity(Intent.createChooser(emailIntent, getString(R.string.send_email)));
                });
            }
        });
    }


    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            finish();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

}