/*
 * 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.items;

import static org.hamcrest.Matchers.hasItem;
import static org.hamcrest.Matchers.not;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.robolectric.RuntimeEnvironment.application;

import android.support.v7.widget.SwitchCompat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.TextView;

import com.android.setupwizardlib.BuildConfig;
import com.android.setupwizardlib.R;
import com.android.setupwizardlib.robolectric.SuwLibRobolectricTestRunner;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.annotation.Config;

import java.util.ArrayList;

@RunWith(SuwLibRobolectricTestRunner.class)
@Config(constants = BuildConfig.class, sdk = { Config.OLDEST_SDK, Config.NEWEST_SDK })
public class ExpandableSwitchItemTest {

    private TextView mSummaryView;
    private ExpandableSwitchItem mItem;

    @Before
    public void setUp() {
        mItem = new ExpandableSwitchItem();
        mItem.setTitle("TestTitle");
        mItem.setCollapsedSummary("TestSummary");
        mItem.setExpandedSummary("TestSummaryExpanded");
    }

    @Test
    public void testInitialState() {
        View view = createLayout();
        mItem.onBindView(view);

        assertEquals("Collapsed summary should be TestSummary",
                "TestSummary", mItem.getCollapsedSummary());
        assertEquals("Expanded summary should be TestSummaryExpanded",
                "TestSummaryExpanded", mItem.getExpandedSummary());

        assertEquals("Should be collapsed initially", "TestSummary", mItem.getSummary());
        assertEquals("Summary view should display collapsed summary",
                "TestSummary", mSummaryView.getText());

        assertFalse("Expandable switch item itself should not be focusable", view.isFocusable());
    }

    @Test
    public void testExpanded() {
        View view = createLayout();
        mItem.onBindView(view);

        mItem.setExpanded(true);

        assertEquals("Collapsed summary should be TestSummary",
                "TestSummary", mItem.getCollapsedSummary());
        assertEquals("Expanded summary should be TestSummaryExpanded",
                "TestSummaryExpanded", mItem.getExpandedSummary());

        assertTrue("Should be expanded", mItem.isExpanded());
        assertEquals("getSummary should be expanded summary",
                "TestSummaryExpanded", mItem.getSummary());
    }

    @Test
    public void testCollapsed() {
        View view = createLayout();
        mItem.onBindView(view);

        mItem.setExpanded(true);
        assertTrue("Should be expanded", mItem.isExpanded());

        mItem.setExpanded(false);

        assertEquals("Collapsed summary should be TestSummary",
                "TestSummary", mItem.getCollapsedSummary());
        assertEquals("Expanded summary should be TestSummaryExpanded",
                "TestSummaryExpanded", mItem.getExpandedSummary());

        assertFalse("Should be expanded", mItem.isExpanded());
        assertEquals("getSummary should be collapsed summary",
                "TestSummary", mItem.getSummary());
    }

    @Test
    public void testClick() {
        View view = createLayout();
        mItem.onBindView(view);

        assertFalse("Should not be expanded initially", mItem.isExpanded());

        final View content = view.findViewById(R.id.suw_items_expandable_switch_content);
        content.performClick();
        assertTrue("Should be expanded after clicking", mItem.isExpanded());

        content.performClick();
        assertFalse("Should be collapsed again after clicking", mItem.isExpanded());
    }

    @Test
    public void testDrawableState() {
        final View view =
                LayoutInflater.from(application).inflate(mItem.getLayoutResource(), null);
        mItem.onBindView(view);

        final View titleView = view.findViewById(R.id.suw_items_title);
        assertThat("state_checked should not be set initially",
                toArrayList(titleView.getDrawableState()),
                not(hasItem(android.R.attr.state_checked)));

        mItem.setExpanded(true);
        mItem.onBindView(view);
        assertThat("state_checked should not be set initially",
                toArrayList(titleView.getDrawableState()),
                hasItem(android.R.attr.state_checked));

        mItem.setExpanded(false);
        mItem.onBindView(view);
        assertThat("state_checked should not be set initially",
                toArrayList(titleView.getDrawableState()),
                not(hasItem(android.R.attr.state_checked)));
    }

    private ArrayList<Integer> toArrayList(int[] array) {
        ArrayList<Integer> arrayList = new ArrayList<>(array.length);
        for (int i : array) {
            arrayList.add(i);
        }
        return arrayList;
    }

    private ViewGroup createLayout() {
        ViewGroup root = new FrameLayout(application);

        ViewGroup content = new FrameLayout(application);
        content.setId(R.id.suw_items_expandable_switch_content);
        root.addView(content);

        TextView titleView = new TextView(application);
        titleView.setId(R.id.suw_items_title);
        content.addView(titleView);

        mSummaryView = new TextView(application);
        mSummaryView.setId(R.id.suw_items_summary);
        content.addView(mSummaryView);

        FrameLayout iconContainer = new FrameLayout(application);
        iconContainer.setId(R.id.suw_items_icon_container);
        content.addView(iconContainer);

        ImageView iconView = new ImageView(application);
        iconView.setId(R.id.suw_items_icon);
        iconContainer.addView(iconView);

        SwitchCompat switchView = new SwitchCompat(application);
        switchView.setId(R.id.suw_items_switch);
        root.addView(switchView);

        return root;
    }
}
