/*
 * Copyright (C) 2015 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 androidx.leanback.widget;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import android.content.Context;
import android.graphics.Bitmap;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.MediumTest;
import android.support.test.runner.AndroidJUnit4;
import android.view.ContextThemeWrapper;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.FrameLayout;

import androidx.leanback.R;
import androidx.leanback.app.HeadersFragment;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

@MediumTest
@RunWith(AndroidJUnit4.class)
public class PresenterTest {
    private Context mContext;

    @Before
    public void setup() throws Exception {
        mContext = InstrumentationRegistry.getTargetContext();
    }

    @Test
    public void testZoomFactors() throws Throwable {
        new ListRowPresenter(FocusHighlight.ZOOM_FACTOR_SMALL);
        new ListRowPresenter(FocusHighlight.ZOOM_FACTOR_MEDIUM);
        new ListRowPresenter(FocusHighlight.ZOOM_FACTOR_LARGE);
        new ListRowPresenter(FocusHighlight.ZOOM_FACTOR_XSMALL);
        try {
            new ListRowPresenter(100);
            fail("Should have thrown exception");
        } catch (IllegalArgumentException exception) {
        }
    }

    private void testHeaderPresenter(RowHeaderPresenter p) {
        int expectedVisibility;
        Presenter.ViewHolder vh = p.onCreateViewHolder(new FrameLayout(mContext));
        p.onBindViewHolder(vh, null);
        expectedVisibility = p.isNullItemVisibilityGone() ? View.GONE : View.VISIBLE;
        assertTrue("Header visibility",
                vh.view.getVisibility() == expectedVisibility);
        p.onBindViewHolder(vh, new Row(null));
        assertTrue("Header visibility",
                vh.view.getVisibility() == expectedVisibility);
        p.onBindViewHolder(vh, new Row(new HeaderItem("")));
        assertTrue("Header visibility",
                vh.view.getVisibility() == View.VISIBLE);
    }

    @Test
    public void testHeaderPresenter() throws Throwable {
        HeadersFragment hf = new HeadersFragment();
        PresenterSelector ps = hf.getPresenterSelector();

        Presenter p = ps.getPresenter(new Row());
        assertTrue("Row header instance",
                p instanceof RowHeaderPresenter);
        assertFalse("isNullItemVisibilityGone",
                ((RowHeaderPresenter) p).isNullItemVisibilityGone());
        testHeaderPresenter((RowHeaderPresenter) p);

        p = ps.getPresenter(new SectionRow("Section Name"));
        assertTrue("Row header instance",
                p instanceof RowHeaderPresenter);
        assertFalse("isNullItemVisibilityGone",
                ((RowHeaderPresenter) p).isNullItemVisibilityGone());
        testHeaderPresenter((RowHeaderPresenter) p);

        p = ps.getPresenter(new DividerRow());
        assertTrue("Row header instance",
                p instanceof DividerPresenter);

        ListRowPresenter lrp = new ListRowPresenter();
        assertTrue("Row header instance",
                lrp.getHeaderPresenter() instanceof RowHeaderPresenter);
        RowHeaderPresenter rhp = (RowHeaderPresenter) lrp.getHeaderPresenter();
        assertTrue("isNullItemVisibilityGone",
                rhp.isNullItemVisibilityGone());
        testHeaderPresenter(rhp);
    }

    @Test
    public void testRowHeaderPresenter() {
        RowHeaderPresenter p = new RowHeaderPresenter();
        p.setNullItemVisibilityGone(true);
        RowHeaderPresenter.ViewHolder vh = (RowHeaderPresenter.ViewHolder)
                p.onCreateViewHolder(new FrameLayout(mContext));
        p.onBindViewHolder(vh, null);
        assertEquals("Header visibility", View.GONE, vh.view.getVisibility());
        p.onBindViewHolder(vh, new Row(null));
        assertEquals("Header visibility", View.GONE, vh.view.getVisibility());

        p.onBindViewHolder(vh, new Row(new HeaderItem("")));
        assertEquals("Header visibility", View.VISIBLE, vh.view.getVisibility());
        assertEquals("Header Description visibility", View.GONE,
                vh.mDescriptionView.getVisibility());

        HeaderItem item = new HeaderItem("");
        item.setDescription("description");
        p.onBindViewHolder(vh, new Row(item));
        assertEquals("Header visibility", View.VISIBLE, vh.view.getVisibility());
        assertEquals("Header Description visibility", View.VISIBLE,
                vh.mDescriptionView.getVisibility());
    }

    @Test
    public void testSingleRowHeaderPresenter() {
        RowHeaderPresenter p = new RowHeaderPresenter();
        RowHeaderPresenter.ViewHolder vh = new RowHeaderPresenter.ViewHolder(
                new RowHeaderView(mContext));
        HeaderItem item = new HeaderItem("");
        p.onBindViewHolder(vh, new Row(item));
        assertEquals("Header visibility", View.VISIBLE, vh.view.getVisibility());
    }

    @Test
    public void testPlaybackControlsRowPresenter() {
        Context context = new ContextThemeWrapper(mContext, R.style.Theme_Leanback);
        Presenter detailsPresenter = new AbstractDetailsDescriptionPresenter() {
            @Override
            protected void onBindDescription(ViewHolder vh, Object item) {
                vh.getTitle().setText("The quick brown fox jumped over the lazy dog");
                vh.getSubtitle().setText("Subtitle");
            }
        };
        PlaybackControlsRowPresenter controlsRowPresenter = new PlaybackControlsRowPresenter(
                detailsPresenter);
        PlaybackControlsRowPresenter.ViewHolder vh = (PlaybackControlsRowPresenter.ViewHolder)
                controlsRowPresenter.onCreateViewHolder(new FrameLayout(context));

        Object item = new Object();
        PlaybackControlsRow controlsRow = new PlaybackControlsRow(item);

        controlsRowPresenter.onBindRowViewHolder(vh, controlsRow);
        assertEquals("Controls card right panel layout height",
                vh.view.findViewById(R.id.controls_card_right_panel).getLayoutParams().height,
                LayoutParams.WRAP_CONTENT);
        assertEquals("Description dock layout height",
                vh.view.findViewById(R.id.description_dock).getLayoutParams().height,
                LayoutParams.WRAP_CONTENT);
        controlsRowPresenter.onUnbindRowViewHolder(vh);

        controlsRow.setImageBitmap(
                context, Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888));
        controlsRowPresenter.onBindRowViewHolder(vh, controlsRow);
        AssertHelper.assertGreaterThan("Controls card right panel layout height",
                vh.view.findViewById(R.id.controls_card_right_panel).getLayoutParams().height, 0);
        assertEquals("Description dock layout height",
                vh.view.findViewById(R.id.description_dock).getLayoutParams().height, 0);
        controlsRowPresenter.onUnbindRowViewHolder(vh);
    }
}