/*
 * 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.systemui.keyguard.ui.binder

import android.testing.TestableLooper.RunWithLooper
import android.view.RemoteAnimationTarget
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.SmallTest
import com.android.keyguard.KeyguardViewController
import com.android.systemui.SysuiTestCase
import com.android.systemui.animation.AnimatorTestRule
import com.android.systemui.keyguard.domain.interactor.KeyguardSurfaceBehindInteractor
import com.android.systemui.keyguard.shared.model.KeyguardSurfaceBehindModel
import com.android.systemui.util.concurrency.FakeExecutor
import com.android.systemui.util.mockito.whenever
import com.android.systemui.util.time.FakeSystemClock
import junit.framework.Assert.assertFalse
import junit.framework.Assert.assertNull
import junit.framework.Assert.assertTrue
import org.junit.After
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
import org.mockito.Mock
import org.mockito.Mockito.anyBoolean
import org.mockito.Mockito.doAnswer
import org.mockito.MockitoAnnotations

@SmallTest
@RunWithLooper(setAsMainLooper = true)
@RunWith(AndroidJUnit4::class)
class KeyguardSurfaceBehindParamsApplierTest : SysuiTestCase() {
    @get:Rule val animatorTestRule = AnimatorTestRule(this)

    private lateinit var underTest: KeyguardSurfaceBehindParamsApplier
    private lateinit var executor: FakeExecutor

    @Mock private lateinit var keyguardViewController: KeyguardViewController

    @Mock private lateinit var interactor: KeyguardSurfaceBehindInteractor

    @Mock private lateinit var remoteAnimationTarget: RemoteAnimationTarget

    private var isAnimatingSurface: Boolean? = null

    @Before
    fun setUp() {
        MockitoAnnotations.initMocks(this)
        executor = FakeExecutor(FakeSystemClock())
        underTest =
            KeyguardSurfaceBehindParamsApplier(
                executor = executor,
                keyguardViewController = keyguardViewController,
                interactor = interactor,
                context = context,
            )

        doAnswer {
                (it.arguments[0] as Boolean).let { animating -> isAnimatingSurface = animating }
            }
            .whenever(interactor)
            .setAnimatingSurface(anyBoolean())
    }

    @After
    fun tearDown() {
        animatorTestRule.advanceTimeBy(1000.toLong())
    }

    @Test
    fun testNotAnimating_setParamsWithNoAnimation() {
        underTest.viewParams = KeyguardSurfaceBehindModel(alpha = 0.3f, translationY = 300f)

        // A surface has not yet been provided, so we shouldn't have set animating to false OR true
        // just yet.
        assertNull(isAnimatingSurface)

        underTest.applyParamsToSurface(remoteAnimationTarget)

        // We should now explicitly not be animating the surface.
        assertFalse(checkNotNull(isAnimatingSurface))
    }

    @Test
    fun testAnimating_paramsThenSurfaceProvided() {
        underTest.viewParams =
            KeyguardSurfaceBehindModel(
                animateFromAlpha = 0f,
                alpha = 0.3f,
                animateFromTranslationY = 0f,
                translationY = 300f,
            )

        // A surface has not yet been provided, so we shouldn't have set animating to false OR true
        // just yet.
        assertNull(isAnimatingSurface)

        underTest.applyParamsToSurface(remoteAnimationTarget)

        // We should now be animating the surface.
        assertTrue(checkNotNull(isAnimatingSurface))
    }

    @Test
    fun testAnimating_surfaceThenParamsProvided() {
        underTest.applyParamsToSurface(remoteAnimationTarget)

        // The default params (which do not animate) should have been applied, so we're explicitly
        // NOT animating yet.
        assertFalse(checkNotNull(isAnimatingSurface))

        underTest.viewParams =
            KeyguardSurfaceBehindModel(
                animateFromAlpha = 0f,
                alpha = 0.3f,
                animateFromTranslationY = 0f,
                translationY = 300f,
            )

        // We should now be animating the surface.
        assertTrue(checkNotNull(isAnimatingSurface))
    }

    @Test
    fun testAnimating_thenReleased_animatingIsFalse() {
        underTest.viewParams =
            KeyguardSurfaceBehindModel(
                animateFromAlpha = 0f,
                alpha = 0.3f,
                animateFromTranslationY = 0f,
                translationY = 300f,
            )
        underTest.applyParamsToSurface(remoteAnimationTarget)

        assertTrue(checkNotNull(isAnimatingSurface))

        underTest.notifySurfaceReleased()

        // Releasing the surface should immediately cancel animators.
        assertFalse(checkNotNull(isAnimatingSurface))
    }
}