/*
 * 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.viewmodel

import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.SmallTest
import com.android.systemui.SysuiTestCase
import com.android.systemui.biometrics.data.repository.fingerprintPropertyRepository
import com.android.systemui.coroutines.collectLastValue
import com.android.systemui.flags.DisableSceneContainer
import com.android.systemui.keyguard.data.repository.biometricSettingsRepository
import com.android.systemui.keyguard.data.repository.fakeKeyguardTransitionRepository
import com.android.systemui.keyguard.shared.model.KeyguardState
import com.android.systemui.keyguard.shared.model.TransitionState
import com.android.systemui.keyguard.shared.model.TransitionStep
import com.android.systemui.keyguard.ui.StateToValue
import com.android.systemui.kosmos.testScope
import com.android.systemui.power.data.repository.powerRepository
import com.android.systemui.power.shared.model.WakeSleepReason
import com.android.systemui.power.shared.model.WakefulnessState
import com.android.systemui.testKosmos
import com.google.common.collect.Range
import com.google.common.truth.Truth.assertThat
import kotlinx.coroutines.test.runCurrent
import kotlinx.coroutines.test.runTest
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith

@SmallTest
@RunWith(AndroidJUnit4::class)
@DisableSceneContainer
class GoneToAodTransitionViewModelTest : SysuiTestCase() {
    private val kosmos = testKosmos()
    private val testScope = kosmos.testScope
    private val repository = kosmos.fakeKeyguardTransitionRepository
    private val fingerprintPropertyRepository = kosmos.fingerprintPropertyRepository
    private val biometricSettingsRepository = kosmos.biometricSettingsRepository
    private val powerRepository = kosmos.powerRepository
    private lateinit var underTest: GoneToAodTransitionViewModel

    @Before
    fun setup() {
        underTest = kosmos.goneToAodTransitionViewModel
    }

    @Test
    fun enterFromTopTranslationY_whenNotOnFold() =
        testScope.runTest {
            powerRepository.updateWakefulness(
                rawState = WakefulnessState.STARTING_TO_SLEEP,
                lastWakeReason = WakeSleepReason.POWER_BUTTON,
                lastSleepReason = WakeSleepReason.POWER_BUTTON,
                powerButtonLaunchGestureTriggered = false,
            )

            val pixels = -100f
            val enterFromTopTranslationY by
                collectLastValue(underTest.enterFromTopTranslationY(pixels.toInt()))
            runCurrent()

            // The animation should only start > .4f way through
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(enterFromTopTranslationY)
                .isEqualTo(
                    StateToValue(
                        from = KeyguardState.GONE,
                        to = KeyguardState.AOD,
                        transitionState = TransitionState.STARTED,
                        value = pixels,
                    )
                )

            repository.sendTransitionStep(step(.55f))
            assertThat(enterFromTopTranslationY!!.value ?: -1f).isIn(Range.closed(pixels, 0f))

            repository.sendTransitionStep(step(.85f))
            assertThat(enterFromTopTranslationY!!.value ?: -1f).isIn(Range.closed(pixels, 0f))

            // At the end, the translation should be complete and set to zero
            repository.sendTransitionStep(step(1f))
            assertThat(enterFromTopTranslationY)
                .isEqualTo(
                    StateToValue(
                        from = KeyguardState.GONE,
                        to = KeyguardState.AOD,
                        transitionState = TransitionState.RUNNING,
                        value = 0f,
                    )
                )
        }

    @Test
    fun enterFromTopTranslationY_whenOnFold_emitsNothing() =
        testScope.runTest {
            powerRepository.updateWakefulness(
                rawState = WakefulnessState.STARTING_TO_SLEEP,
                lastWakeReason = WakeSleepReason.POWER_BUTTON,
                lastSleepReason = WakeSleepReason.FOLD,
                powerButtonLaunchGestureTriggered = false,
            )

            val pixels = -100f
            val enterFromTopTranslationY by
                collectLastValue(underTest.enterFromTopTranslationY(pixels.toInt()))
            runCurrent()

            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(enterFromTopTranslationY).isNull()

            repository.sendTransitionStep(step(.55f))
            assertThat(enterFromTopTranslationY).isNull()

            repository.sendTransitionStep(step(.85f))
            assertThat(enterFromTopTranslationY).isNull()

            repository.sendTransitionStep(step(1f))
            assertThat(enterFromTopTranslationY).isNull()
        }

    @Test
    fun enterFromSideTranslationX_onFold() =
        testScope.runTest {
            powerRepository.updateWakefulness(
                rawState = WakefulnessState.STARTING_TO_SLEEP,
                lastWakeReason = WakeSleepReason.POWER_BUTTON,
                lastSleepReason = WakeSleepReason.FOLD,
                powerButtonLaunchGestureTriggered = false,
            )

            val pixels = -100f
            val enterFromSideTranslationX by
                collectLastValue(underTest.enterFromSideTranslationX(pixels.toInt()))
            runCurrent()

            // The animation should only start > .4f way through
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(enterFromSideTranslationX)
                .isEqualTo(
                    StateToValue(
                        from = KeyguardState.GONE,
                        to = KeyguardState.AOD,
                        transitionState = TransitionState.STARTED,
                        value = pixels,
                    )
                )

            repository.sendTransitionStep(step(.55f))
            assertThat(enterFromSideTranslationX!!.value ?: -1f).isIn(Range.closed(pixels, 0f))

            repository.sendTransitionStep(step(.85f))
            assertThat(enterFromSideTranslationX!!.value ?: -1f).isIn(Range.closed(pixels, 0f))

            // At the end, the translation should be complete and set to zero
            repository.sendTransitionStep(step(1f))
            assertThat(enterFromSideTranslationX)
                .isEqualTo(
                    StateToValue(
                        from = KeyguardState.GONE,
                        to = KeyguardState.AOD,
                        transitionState = TransitionState.RUNNING,
                        value = 0f,
                    )
                )
        }

    @Test
    fun enterFromTopAnimationAlpha() =
        testScope.runTest {
            val enterFromTopAnimationAlpha by collectLastValue(underTest.enterFromTopAnimationAlpha)
            runCurrent()

            // The animation should only start > .4f way through
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(enterFromTopAnimationAlpha).isEqualTo(0f)

            repository.sendTransitionStep(step(0.4f))
            assertThat(enterFromTopAnimationAlpha).isEqualTo(0f)

            repository.sendTransitionStep(step(.85f))
            assertThat(enterFromTopAnimationAlpha).isIn(Range.closed(0f, 1f))

            repository.sendTransitionStep(step(1f))
            assertThat(enterFromTopAnimationAlpha).isEqualTo(1f)
        }

    @Test
    fun deviceEntryBackgroundViewAlpha() =
        testScope.runTest {
            val deviceEntryBackgroundViewAlpha by
                collectLastValue(underTest.deviceEntryBackgroundViewAlpha)
            runCurrent()

            // immediately 0f
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(deviceEntryBackgroundViewAlpha).isEqualTo(0f)

            repository.sendTransitionStep(step(0.4f))
            assertThat(deviceEntryBackgroundViewAlpha).isEqualTo(0f)

            repository.sendTransitionStep(step(.85f))
            assertThat(deviceEntryBackgroundViewAlpha).isEqualTo(0f)

            repository.sendTransitionStep(step(1f))
            assertThat(deviceEntryBackgroundViewAlpha).isEqualTo(0f)
        }

    @Test
    fun deviceEntryParentViewAlpha_udfpsEnrolled() =
        testScope.runTest {
            fingerprintPropertyRepository.supportsUdfps()
            biometricSettingsRepository.setIsFingerprintAuthEnrolledAndEnabled(true)
            val deviceEntryParentViewAlpha by collectLastValue(underTest.deviceEntryParentViewAlpha)
            runCurrent()

            // immediately 1f
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(deviceEntryParentViewAlpha).isEqualTo(1f)

            repository.sendTransitionStep(step(0.4f))
            assertThat(deviceEntryParentViewAlpha).isEqualTo(1f)

            repository.sendTransitionStep(step(.85f))
            assertThat(deviceEntryParentViewAlpha).isEqualTo(1f)

            repository.sendTransitionStep(step(1f))
            assertThat(deviceEntryParentViewAlpha).isEqualTo(1f)
        }

    @Test
    fun deviceEntryParentViewAlpha_rearFpEnrolled() =
        testScope.runTest {
            fingerprintPropertyRepository.supportsRearFps()
            biometricSettingsRepository.setIsFingerprintAuthEnrolledAndEnabled(true)
            val deviceEntryParentViewAlpha by collectLastValue(underTest.deviceEntryParentViewAlpha)
            runCurrent()

            // animation doesn't start until the end
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(0.5f))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(.95f))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(1f))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(1f, TransitionState.FINISHED))
            assertThat(deviceEntryParentViewAlpha).isNull()
        }

    @Test
    fun deviceEntryParentViewAlpha_udfpsNotEnrolled_noUpdates() =
        testScope.runTest {
            fingerprintPropertyRepository.supportsUdfps()
            biometricSettingsRepository.setIsFingerprintAuthEnrolledAndEnabled(false)
            val deviceEntryParentViewAlpha by collectLastValue(underTest.deviceEntryParentViewAlpha)
            runCurrent()

            // animation doesn't start until the end
            repository.sendTransitionStep(step(0f, TransitionState.STARTED))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(0.5f))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(.95f))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(1f))
            assertThat(deviceEntryParentViewAlpha).isNull()

            repository.sendTransitionStep(step(1f, TransitionState.FINISHED))
            assertThat(deviceEntryParentViewAlpha).isNull()
        }

    private fun step(
        value: Float,
        state: TransitionState = TransitionState.RUNNING,
    ): TransitionStep {
        return TransitionStep(
            from = KeyguardState.GONE,
            to = KeyguardState.AOD,
            value = value,
            transitionState = state,
            ownerName = "GoneToAodTransitionViewModelTest",
        )
    }
}