/*
 * Copyright (C) 2023 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.settings.accessibility;

import static com.android.settings.accessibility.FlashNotificationsUtil.ACTION_FLASH_NOTIFICATION_START_PREVIEW;
import static com.android.settings.accessibility.FlashNotificationsUtil.EXTRA_FLASH_NOTIFICATION_PREVIEW_TYPE;
import static com.android.settings.accessibility.FlashNotificationsUtil.TYPE_LONG_PREVIEW;
import static com.android.settings.accessibility.FlashNotificationsUtil.TYPE_SHORT_PREVIEW;
import static com.android.settings.accessibility.ShadowFlashNotificationsUtils.setFlashNotificationsState;
import static com.android.settings.core.BasePreferenceController.AVAILABLE;

import static com.google.common.truth.Truth.assertThat;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.provider.Settings;

import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleOwner;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import androidx.test.core.app.ApplicationProvider;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.Spy;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;

@RunWith(RobolectricTestRunner.class)
@Config(shadows = ShadowFlashNotificationsUtils.class)
public class FlashNotificationsPreviewPreferenceControllerTest {
    private static final String PREFERENCE_KEY = "preference_key";

    @Rule
    public MockitoRule mMockitoRule = MockitoJUnit.rule();
    @Spy
    private final Context mContext = ApplicationProvider.getApplicationContext();
    @Mock
    private PreferenceScreen mPreferenceScreen;
    @Mock
    private Preference mPreference;
    @Spy
    private ContentResolver mContentResolver = mContext.getContentResolver();

    private FlashNotificationsPreviewPreferenceController mController;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        when(mPreferenceScreen.findPreference(PREFERENCE_KEY)).thenReturn(mPreference);
        when(mPreference.getKey()).thenReturn(PREFERENCE_KEY);

        when(mContext.getContentResolver()).thenReturn(mContentResolver);
        mController = new FlashNotificationsPreviewPreferenceController(mContext, PREFERENCE_KEY);
    }

    @After
    public void tearDown() {
        ShadowFlashNotificationsUtils.reset();
    }

    @Test
    public void testGetAvailabilityStatus() {
        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
    }

    @Test
    public void testDisplayPreference_torchPresent_cameraOff_screenOff_verifyDisabled() {
        setFlashNotificationsState(FlashNotificationsUtil.State.OFF);

        mController.displayPreference(mPreferenceScreen);
        verify(mPreference).setEnabled(eq(false));
    }

    @Test
    public void testDisplayPreference_torchPresent_cameraOn_screenOff_verifyEnabled() {
        setFlashNotificationsState(FlashNotificationsUtil.State.CAMERA);

        mController.displayPreference(mPreferenceScreen);
        verify(mPreference).setEnabled(eq(true));
    }

    @Test
    public void testDisplayPreference_torchPresent_cameraOff_screenOn_verifyEnabled() {
        setFlashNotificationsState(FlashNotificationsUtil.State.SCREEN);

        mController.displayPreference(mPreferenceScreen);
        verify(mPreference).setEnabled(eq(true));
    }

    @Test
    public void testDisplayPreference_torchPresent_cameraOn_screenOn_verifyEnabled() {
        setFlashNotificationsState(FlashNotificationsUtil.State.CAMERA_SCREEN);

        mController.displayPreference(mPreferenceScreen);
        verify(mPreference).setEnabled(eq(true));
    }

    @Test
    public void testHandlePreferenceTreeClick_invalidPreference() {
        mController.handlePreferenceTreeClick(mock(Preference.class));
        verify(mContext, never()).sendBroadcastAsUser(any(), any());
    }

    @Test
    public void handlePreferenceTreeClick_assertAction() {
        mController.handlePreferenceTreeClick(mPreference);

        ArgumentCaptor<Intent> captor = ArgumentCaptor.forClass(Intent.class);
        verify(mContext).sendBroadcastAsUser(captor.capture(), any());
        Intent captured = captor.getValue();

        assertThat(captured.getAction()).isEqualTo(ACTION_FLASH_NOTIFICATION_START_PREVIEW);
    }

    @Test
    public void handlePreferenceTreeClick_assertExtra() {
        mController.handlePreferenceTreeClick(mPreference);

        ArgumentCaptor<Intent> captor = ArgumentCaptor.forClass(Intent.class);
        verify(mContext).sendBroadcastAsUser(captor.capture(), any());
        Intent captured = captor.getValue();

        assertThat(captured.getIntExtra(EXTRA_FLASH_NOTIFICATION_PREVIEW_TYPE, TYPE_LONG_PREVIEW))
                .isEqualTo(TYPE_SHORT_PREVIEW);
    }

    @Test
    public void onStateChanged_onResume_cameraUri_verifyRegister() {
        mController.onStateChanged(mock(LifecycleOwner.class), Lifecycle.Event.ON_RESUME);
        verify(mContentResolver).registerContentObserver(
                eq(Settings.System.getUriFor(Settings.System.CAMERA_FLASH_NOTIFICATION)),
                anyBoolean(), eq(mController.mContentObserver));
    }

    @Test
    public void onStateChanged_onResume_screenUri_verifyRegister() {
        mController.onStateChanged(mock(LifecycleOwner.class), Lifecycle.Event.ON_RESUME);
        verify(mContentResolver).registerContentObserver(
                eq(Settings.System.getUriFor(Settings.System.SCREEN_FLASH_NOTIFICATION)),
                anyBoolean(), eq(mController.mContentObserver));
    }

    @Test
    public void onStateChanged_onPause_verifyUnregister() {
        mController.onStateChanged(mock(LifecycleOwner.class), Lifecycle.Event.ON_PAUSE);
        verify(mContentResolver).unregisterContentObserver(eq(mController.mContentObserver));
    }
}