/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.setupwizardlib.template;

import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.spy;

import android.content.Context;
import android.content.res.XmlResourceParser;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.util.Xml;
import android.view.View;
import android.widget.ImageView;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
import com.android.setupwizardlib.TemplateLayout;
import com.android.setupwizardlib.test.R;
import java.io.IOException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.xmlpull.v1.XmlPullParserException;

@RunWith(AndroidJUnit4.class)
@SmallTest
public class IconMixinTest {

  private Context mContext;
  private TemplateLayout mTemplateLayout;
  private ImageView mIconView;

  @Before
  public void setUp() {
    mContext = InstrumentationRegistry.getContext();
    mTemplateLayout =
        spy(new TemplateLayout(mContext, R.layout.test_template, R.id.suw_layout_content));

    mIconView = new ImageView(mContext);
    doReturn(mIconView).when(mTemplateLayout).findManagedViewById(eq(R.id.suw_layout_icon));
  }

  @Test
  public void testGetIconView() {
    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    assertSame(mIconView, mixin.getView());
  }

  @Test
  public void testSetIcon() {
    final ColorDrawable drawable = new ColorDrawable(Color.CYAN);
    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    mixin.setIcon(drawable);

    assertSame(drawable, mIconView.getDrawable());
    assertEquals(View.VISIBLE, mIconView.getVisibility());
  }

  @Test
  public void setIcon_resourceId_shouldSetIcon() {
    int icon = android.R.drawable.ic_menu_add;
    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    mixin.setIcon(icon);

    Drawable drawable = mIconView.getDrawable();
    assertThat(drawable).isInstanceOf(BitmapDrawable.class);
    assertEquals(View.VISIBLE, mIconView.getVisibility());
  }

  @Test
  public void setIcon_shouldSetVisibilityToGone_whenIconIsNull() {
    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    mixin.setIcon(null);

    assertEquals(View.GONE, mIconView.getVisibility());
  }

  @Test
  public void testGetIcon() {
    final ColorDrawable drawable = new ColorDrawable(Color.BLUE);
    mIconView.setImageDrawable(drawable);

    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    assertSame(drawable, mixin.getIcon());
  }

  @SuppressWarnings("ResourceType") // Needed to create attribute set from layout XML.
  @Test
  public void testSetIconFromXml() throws IOException, XmlPullParserException {
    final XmlResourceParser parser = mContext.getResources().getXml(R.layout.test_mixin_attributes);
    while (!TemplateLayout.class.getName().equals(parser.getName())) {
      parser.next();
    }
    new IconMixin(mTemplateLayout, Xml.asAttributeSet(parser), 0);

    // Check that the bitmaps themselves are equal because BitmapDrawable does not implement
    // equals()
    final BitmapDrawable expected =
        (BitmapDrawable) mContext.getResources().getDrawable(android.R.drawable.ic_menu_add);
    final BitmapDrawable actual = (BitmapDrawable) mIconView.getDrawable();
    assertEquals(expected.getBitmap(), actual.getBitmap());
    assertEquals(View.VISIBLE, mIconView.getVisibility());
  }

  @Test
  public void setContentDescription_shouldSetContentDescriptionOnIconView() {
    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    mixin.setContentDescription("hello world");
    assertThat(mIconView.getContentDescription()).isEqualTo("hello world");
  }

  @Test
  public void getContentDescription_shouldReturnContentDescriptionFromView() {
    IconMixin mixin = new IconMixin(mTemplateLayout, null, 0);
    mIconView.setContentDescription("aloha");
    assertThat(mixin.getContentDescription()).isEqualTo("aloha");
  }
}