/*
 * Copyright (c) 2024 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.login.impl.screens.qrcode.intro

import androidx.activity.ComponentActivity
import androidx.compose.ui.test.junit4.AndroidComposeTestRule
import androidx.compose.ui.test.junit4.createAndroidComposeRule
import androidx.test.ext.junit.runners.AndroidJUnit4
import io.element.android.libraries.ui.strings.CommonStrings
import io.element.android.tests.testutils.EnsureNeverCalled
import io.element.android.tests.testutils.EventsRecorder
import io.element.android.tests.testutils.clickOn
import io.element.android.tests.testutils.ensureCalledOnce
import io.element.android.tests.testutils.pressBack
import io.element.android.tests.testutils.pressBackKey
import org.junit.Rule
import org.junit.Test
import org.junit.rules.TestRule
import org.junit.runner.RunWith

@RunWith(AndroidJUnit4::class)
class QrCodeIntroViewTest {
    @get:Rule
    val rule = createAndroidComposeRule<ComponentActivity>()

    @Test
    fun `on back pressed - calls the expected callback`() {
        ensureCalledOnce { callback ->
            rule.setQrCodeIntroView(
                state = aQrCodeIntroState(),
                onBackClicked = callback
            )
            rule.pressBackKey()
        }
    }

    @Test
    fun `on back button clicked - calls the expected callback`() {
        ensureCalledOnce { callback ->
            rule.setQrCodeIntroView(
                state = aQrCodeIntroState(),
                onBackClicked = callback
            )
            rule.pressBack()
        }
    }

    @Test
    fun `when can continue - calls the expected callback`() {
        ensureCalledOnce { callback ->
            rule.setQrCodeIntroView(
                state = aQrCodeIntroState(canContinue = true),
                onContinue = callback
            )
        }
    }

    @Test
    fun `on continue button clicked - emits the Continue event`() {
        val eventRecorder = EventsRecorder<QrCodeIntroEvents>()
        rule.setQrCodeIntroView(
            state = aQrCodeIntroState(eventSink = eventRecorder),
        )
        rule.clickOn(CommonStrings.action_continue)
        eventRecorder.assertSingle(QrCodeIntroEvents.Continue)
    }

    private fun <R : TestRule> AndroidComposeTestRule<R, ComponentActivity>.setQrCodeIntroView(
        state: QrCodeIntroState,
        onBackClicked: () -> Unit = EnsureNeverCalled(),
        onContinue: () -> Unit = EnsureNeverCalled(),
    ) {
        setContent {
            QrCodeIntroView(
                state = state,
                onBackClick = onBackClicked,
                onContinue = onContinue,
            )
        }
    }
}
