/*
 * Copyright (C) 2025 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.eyedropper.desktop

import android.content.ComponentName
import android.graphics.Bitmap
import android.os.IBinder
import androidx.test.ext.junit.runners.AndroidJUnit4
import com.google.common.truth.Truth.assertThat
import dagger.hilt.android.testing.HiltAndroidRule
import dagger.hilt.android.testing.HiltAndroidTest
import kotlinx.coroutines.Deferred
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
import org.mockito.kotlin.doReturn
import org.mockito.kotlin.eq
import org.mockito.kotlin.mock
import org.mockito.kotlin.verify

/**
 * Test class for [DesktopServiceConnectionTest]
 *
 * Usage: atest EyeDropperUnitTests:DesktopServiceConnectionTest
 */
@HiltAndroidTest
@RunWith(AndroidJUnit4::class)
class DesktopServiceConnectionTest {

    @get:Rule val hiltRule = HiltAndroidRule(this)

    private lateinit var serviceConnection: DesktopServiceConnection

    private val mockOnSelectColor = mock<((Int) -> Unit)>()
    private val mockOnAbort = mock<(() -> Unit)>()

    private val mockDesktopController = mock<DesktopControllerService>()
    private val mockBinder = mock<DesktopControllerService.LocalBinder> {
        on { getService() } doReturn mockDesktopController
    }
    private val mockIBinder: IBinder = mockBinder
    private val mockDeferredScreenshotsMap = mock<Map<Int, Deferred<Bitmap>>>()

    private val componentName = ComponentName("com.android.eyedropper.desktop", "DesktopController")

    @Before
    fun setUp() {
        hiltRule.inject()
        serviceConnection = DesktopServiceConnection(
            mockDeferredScreenshotsMap, mockOnSelectColor, mockOnAbort)
    }

    @Test
    fun constructor_initializesState() {
        assertThat(serviceConnection.isBound).isFalse()
    }

    @Test
    fun onServiceConnected_getsServiceAndShowsOverlay() {
        assertThat(serviceConnection.isBound).isFalse()

        serviceConnection.onServiceConnected(componentName, mockIBinder)

        verify(mockBinder).getService()
        verify(mockDesktopController).showUiOverlay(eq(mockOnSelectColor), eq(mockOnAbort))
        assertThat(serviceConnection.isBound).isTrue()
    }

    @Test
    fun onServiceDisconnected_updatesBoundState() {
        serviceConnection.onServiceConnected(componentName, mockIBinder)
        assertThat(serviceConnection.isBound).isTrue()

        serviceConnection.onServiceDisconnected(componentName)
        assertThat(serviceConnection.isBound).isFalse()
    }
}