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package org.mozc.android.inputmethod.japanese;

import static org.easymock.EasyMock.eq;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.isA;

import org.mozc.android.inputmethod.japanese.CandidateView.ConversionCandidateSelectListener;
import org.mozc.android.inputmethod.japanese.CandidateView.ConversionCandidateWordView;
import org.mozc.android.inputmethod.japanese.protobuf.ProtoCandidates.CandidateList;
import org.mozc.android.inputmethod.japanese.protobuf.ProtoCandidates.CandidateWord;
import org.mozc.android.inputmethod.japanese.testing.InstrumentationTestCaseWithMock;
import org.mozc.android.inputmethod.japanese.testing.MozcLayoutUtil;
import org.mozc.android.inputmethod.japanese.ui.CandidateLayout;
import org.mozc.android.inputmethod.japanese.ui.CandidateLayout.Row;
import org.mozc.android.inputmethod.japanese.ui.CandidateLayouter;
import org.mozc.android.inputmethod.japanese.ui.InputFrameFoldButtonView;
import org.mozc.android.inputmethod.japanese.ui.ScrollGuideView;
import org.mozc.android.inputmethod.japanese.view.Skin;
import com.google.common.base.Optional;

import android.test.suitebuilder.annotation.SmallTest;
import android.view.View;
import android.widget.LinearLayout;

import org.easymock.EasyMock;

import java.util.Collections;

/**
 */
public class CandidateViewTest extends InstrumentationTestCaseWithMock {
  @SmallTest
  public void testConversionCandidateSelectListener() {
    ViewEventListener viewEventListener = createMock(ViewEventListener.class);
    ConversionCandidateSelectListener conversionCandidateSelectListener =
        new ConversionCandidateSelectListener(viewEventListener);

    viewEventListener.onConversionCandidateSelected(0, Optional.<Integer>of(1));
    replayAll();

    conversionCandidateSelectListener.onCandidateSelected(
        CandidateWord.newBuilder().setId(0).buildPartial(), Optional.<Integer>of(1));

    verifyAll();
  }

  @SmallTest
  public void testOnFinishInflate() {
    ConversionCandidateWordView mockCandidateWordView =
        new ConversionCandidateWordView(getInstrumentation().getTargetContext(), null);
    ScrollGuideView mockScrollGuideView = createViewMock(ScrollGuideView.class);
    InputFrameFoldButtonView mockInputFrameFoldButtonView =
        createViewMock(InputFrameFoldButtonView.class);
    CandidateView candidateView = createViewMockBuilder(CandidateView.class)
        .addMockedMethods(
            "getConversionCandidateWordView", "getScrollGuideView", "getInputFrameFoldButton")
        .createMock();

    expect(candidateView.getConversionCandidateWordView()).andStubReturn(mockCandidateWordView);
    expect(candidateView.getScrollGuideView()).andStubReturn(mockScrollGuideView);
    expect(candidateView.getInputFrameFoldButton()).andStubReturn(mockInputFrameFoldButtonView);

    mockScrollGuideView.setScroller(mockCandidateWordView.scroller);
    mockInputFrameFoldButtonView.setChecked(false);
    mockInputFrameFoldButtonView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    replayAll();

    candidateView.onFinishInflate();

    verifyAll();
  }

  @SmallTest
  public void testCandidateWordView_update() {
    ConversionCandidateWordView candidateWordView =
        new ConversionCandidateWordView(getInstrumentation().getTargetContext(), null);
    candidateWordView.setCandidateTextDimension(1, 1);
    candidateWordView.layout(0, 0, 320, 240);
    candidateWordView.scrollTo(100, 100);

    // Setup layouter.
    CandidateList candidateList = CandidateList.newBuilder()
        .addCandidates(CandidateWord.newBuilder().setId(0).setValue("cand1"))
        .addCandidates(CandidateWord.newBuilder().setId(1).setValue("cand2"))
        .build();
    candidateWordView.update(candidateList);

    // Check postcondition.
    assertEquals(0, candidateWordView.getScrollX());
    assertEquals(0, candidateWordView.getScrollY());
    assertNotNull(candidateWordView.calculatedLayout);
    assertSame(candidateList, candidateWordView.currentCandidateList);
  }

  @SmallTest
  public void testCandidateWordView_updateZeroRow() {
    ConversionCandidateWordView candidateWordView =
        new ConversionCandidateWordView(getInstrumentation().getTargetContext(), null);

    // Setup precondition, which should be overriden by calling update method.
    candidateWordView.scrollTo(100, 100);

    // Setup mock layouter.
    CandidateLayout layout = MozcLayoutUtil.createNiceCandidateLayoutMock(getMockSupport());
    expect(layout.getRowList()).andStubReturn(Collections.<Row>emptyList());
    CandidateLayouter layouter = createMock(CandidateLayouter.class);
    expect(layouter.layout(isA(CandidateList.class))).andReturn(Optional.of(layout));
    expect(layouter.getPageHeight()).andReturn(100);
    candidateWordView.layouter = layouter;
    replayAll();

    candidateWordView.update(CandidateList.getDefaultInstance());

    // Check postcondition.
    verifyAll();
    assertEquals(0, candidateWordView.getScrollX());
    assertEquals(0, candidateWordView.getScrollY());
    assertNotNull(candidateWordView.calculatedLayout);
    assertSame(CandidateList.getDefaultInstance(), candidateWordView.currentCandidateList);
  }

  @SmallTest
  public void testCandidateWordView_updateDoNothing() {
    ConversionCandidateWordView candidateWordView =
        new ConversionCandidateWordView(getInstrumentation().getTargetContext(), null);

    // Setup precondition
    candidateWordView.scrollTo(100, 100);

    // Clear the layouter.
    candidateWordView.layouter = null;

    // Calling before setting up a layouter.
    candidateWordView.update(CandidateList.getDefaultInstance());
    assertEquals(0, candidateWordView.getScrollX());
    assertEquals(0, candidateWordView.getScrollY());
    assertNull(candidateWordView.calculatedLayout);

    // Set currentCandidateList field.
    candidateWordView.currentCandidateList = CandidateList.getDefaultInstance();

    // Setup precondition
    candidateWordView.scrollTo(100, 100);

    // Calling with the same value as previous.
    candidateWordView.update(CandidateList.getDefaultInstance());
    assertEquals(0, candidateWordView.getScrollX());
    assertEquals(0, candidateWordView.getScrollY());
    assertNull(candidateWordView.calculatedLayout);
  }

  @SmallTest
  public void testConversionCandidateWordView_inputFrameFoldButtonVisibility() {
    ConversionCandidateWordView conversionCandidateWordView =
        new ConversionCandidateWordView(getInstrumentation().getTargetContext(), null);
    InputFrameFoldButtonView mockInputFrameFoldButtonView =
        createViewMock(InputFrameFoldButtonView.class);
    conversionCandidateWordView.inputFrameFoldButtonView = mockInputFrameFoldButtonView;
    conversionCandidateWordView.foldButtonBackgroundVisibilityThreshold = 50;
    conversionCandidateWordView.layout(0, 0, 320, 240);
    conversionCandidateWordView.update(CandidateList.getDefaultInstance());

    conversionCandidateWordView.scrollTo(0, 0);

    // Background should be invisible in [0, 50].
    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(false));
    replayAll();
    conversionCandidateWordView.scrollTo(10, 10);
    verifyAll();

    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(false));
    replayAll();
    conversionCandidateWordView.scrollTo(50, 50);
    verifyAll();

    // Background becomes visible after 50 and stays invisible in (50, 100).
    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(true));
    replayAll();
    conversionCandidateWordView.scrollTo(51, 51);
    verifyAll();

    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(true));
    replayAll();
    conversionCandidateWordView.scrollTo(90, 90);
    verifyAll();

    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(true));
    replayAll();
    conversionCandidateWordView.scrollTo(100, 100);
    verifyAll();

    // Test scrolling backward.
    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(true));
    replayAll();
    conversionCandidateWordView.scrollTo(51, 51);
    verifyAll();

    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(false));
    replayAll();
    conversionCandidateWordView.scrollTo(50, 50);
    verifyAll();

    resetAll();
    mockInputFrameFoldButtonView.showBackgroundForScrolled(eq(false));
    replayAll();
    conversionCandidateWordView.scrollTo(0, 0);
    verifyAll();
  }

  @SmallTest
  public void testSetSkin() {
    ConversionCandidateWordView mockCandidateWordView =
        new ConversionCandidateWordView(getInstrumentation().getTargetContext(), null);
    ScrollGuideView mockScrollGuideView = createViewMock(ScrollGuideView.class);
    InputFrameFoldButtonView mockInputFrameFoldButtonView =
        createViewMockBuilder(InputFrameFoldButtonView.class)
        .addMockedMethods("setSkin")
        .createMock();
    LinearLayout mockCandidateWordFrame = createViewMockBuilder(LinearLayout.class)
        .addMockedMethods("setBackgroundColor")
        .createMock();
    CandidateView candidateView = createViewMockBuilder(CandidateView.class)
        .addMockedMethods(
            "getConversionCandidateWordView", "getScrollGuideView", "getInputFrameFoldButton",
            "getCandidateWordFrame")
        .createMock();
    expect(candidateView.getConversionCandidateWordView()).andStubReturn(mockCandidateWordView);
    expect(candidateView.getScrollGuideView()).andStubReturn(mockScrollGuideView);
    expect(candidateView.getInputFrameFoldButton()).andStubReturn(mockInputFrameFoldButtonView);
    expect(candidateView.getCandidateWordFrame()).andStubReturn(mockCandidateWordFrame);
    Skin skin = new Skin();
    mockCandidateWordView.setSkin(skin);
    mockScrollGuideView.setSkin(skin);
    mockInputFrameFoldButtonView.setSkin(skin);
    mockCandidateWordFrame.setBackgroundColor(EasyMock.anyInt());
    replayAll();

    candidateView.setSkin(skin);

    verifyAll();
  }
}