/*
 * Copyright (c) 2019 Hemanth Savarala.
 *
 * Licensed under the GNU General Public License v3
 *
 * This 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.
 *
 * This software 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.
 */

package code.name.monkey.retromusic.activities;

import android.graphics.Color;
import android.os.Bundle;
import android.view.MenuItem;
import android.webkit.WebView;
import androidx.annotation.NonNull;
import androidx.appcompat.widget.Toolbar;
import code.name.monkey.appthemehelper.ThemeStore;
import code.name.monkey.appthemehelper.util.ATHUtil;
import code.name.monkey.appthemehelper.util.ColorUtil;
import code.name.monkey.appthemehelper.util.ToolbarContentTintHelper;
import code.name.monkey.retromusic.R;
import code.name.monkey.retromusic.activities.base.AbsBaseActivity;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import org.jetbrains.annotations.Nullable;

/** Created by hemanths on 2019-09-27. */
public class LicenseActivity extends AbsBaseActivity {

  @Override
  protected void onCreate(@Nullable Bundle savedInstanceState) {
    setDrawUnderStatusBar();
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_license);
    setStatusbarColorAuto();
    setNavigationbarColorAuto();
    setLightNavigationBar(true);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    ToolbarContentTintHelper.colorBackButton(toolbar);
    toolbar.setBackgroundColor(ATHUtil.INSTANCE.resolveColor(this, R.attr.colorSurface));
    WebView webView = findViewById(R.id.license);
    try {
      StringBuilder buf = new StringBuilder();
      InputStream json = getAssets().open("oldindex.html");
      BufferedReader in = new BufferedReader(new InputStreamReader(json, StandardCharsets.UTF_8));
      String str;
      while ((str = in.readLine()) != null) {
        buf.append(str);
      }
      in.close();

      // Inject color values for WebView body background and links
      final boolean isDark = ATHUtil.INSTANCE.isWindowBackgroundDark(this);
      final String backgroundColor =
          colorToCSS(
              ATHUtil.INSTANCE.resolveColor(
                  this, R.attr.colorSurface, Color.parseColor(isDark ? "#424242" : "#ffffff")));
      final String contentColor = colorToCSS(Color.parseColor(isDark ? "#ffffff" : "#000000"));
      final String changeLog =
          buf.toString()
              .replace(
                  "{style-placeholder}",
                  String.format(
                      "body { background-color: %s; color: %s; }", backgroundColor, contentColor))
              .replace("{link-color}", colorToCSS(ThemeStore.Companion.accentColor(this)))
              .replace(
                  "{link-color-active}",
                  colorToCSS(
                      ColorUtil.INSTANCE.lightenColor(ThemeStore.Companion.accentColor(this))));

      webView.loadData(changeLog, "text/html", "UTF-8");
    } catch (Throwable e) {
      webView.loadData(
          "<h1>Unable to load</h1><p>" + e.getLocalizedMessage() + "</p>", "text/html", "UTF-8");
    }
  }

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

  private String colorToCSS(int color) {
    return String.format(
        "rgb(%d, %d, %d)",
        Color.red(color),
        Color.green(color),
        Color.blue(color)); // on API 29, WebView doesn't load with hex colors
  }
}