/*
 * Copyright (c) 2023 New Vector Ltd
 *
 * 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 io.element.android.features.analytics.impl.preferences

import app.cash.molecule.RecompositionMode
import app.cash.molecule.moleculeFlow
import app.cash.turbine.test
import com.google.common.truth.Truth.assertThat
import io.element.android.features.analytics.api.AnalyticsOptInEvents
import io.element.android.libraries.matrix.test.core.aBuildMeta
import io.element.android.services.analytics.test.FakeAnalyticsService
import kotlinx.coroutines.test.runTest
import org.junit.Test

class AnalyticsPreferencesPresenterTest {
    @Test
    fun `present - initial state available`() = runTest {
        val presenter = DefaultAnalyticsPreferencesPresenter(
            FakeAnalyticsService(isEnabled = true, didAskUserConsent = true),
            aBuildMeta()
        )
        moleculeFlow(RecompositionMode.Immediate) {
            presenter.present()
        }.test {
            skipItems(1)
            val initialState = awaitItem()
            assertThat(initialState.isEnabled).isTrue()
            assertThat(initialState.policyUrl).isNotEmpty()
        }
    }

    @Test
    fun `present - initial state not available`() = runTest {
        val presenter = DefaultAnalyticsPreferencesPresenter(
            FakeAnalyticsService(isEnabled = false, didAskUserConsent = false),
            aBuildMeta()
        )
        moleculeFlow(RecompositionMode.Immediate) {
            presenter.present()
        }.test {
            val initialState = awaitItem()
            assertThat(initialState.isEnabled).isFalse()
        }
    }

    @Test
    fun `present - enable and disable`() = runTest {
        val presenter = DefaultAnalyticsPreferencesPresenter(
            FakeAnalyticsService(isEnabled = true, didAskUserConsent = true),
            aBuildMeta()
        )
        moleculeFlow(RecompositionMode.Immediate) {
            presenter.present()
        }.test {
            skipItems(1)
            val initialState = awaitItem()
            assertThat(initialState.isEnabled).isTrue()
            initialState.eventSink.invoke(AnalyticsOptInEvents.EnableAnalytics(false))
            assertThat(awaitItem().isEnabled).isFalse()
            initialState.eventSink.invoke(AnalyticsOptInEvents.EnableAnalytics(true))
            assertThat(awaitItem().isEnabled).isTrue()
        }
    }
}

