/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.fenix.settings.advanced

import android.app.Activity
import android.content.Context
import io.mockk.Runs
import io.mockk.every
import io.mockk.just
import io.mockk.mockk
import io.mockk.mockkObject
import io.mockk.mockkStatic
import io.mockk.verify
import mozilla.components.support.locale.LocaleManager
import mozilla.components.support.test.mock
import org.junit.Before
import org.junit.Test
import java.util.Locale

class LocaleSettingsControllerTest {

    private val context: Context = mockk<Activity>(relaxed = true)
    private val localeSettingsStore: LocaleSettingsStore = mockk(relaxed = true)

    private lateinit var controller: LocaleSettingsController

    @Before
    fun setup() {
        controller = DefaultLocaleSettingsController(context, localeSettingsStore)
    }

    @Test
    fun `don't set locale if same locale is chosen`() {
        val selectedLocale = Locale("en", "UK")
        every { localeSettingsStore.state } returns LocaleSettingsState(
            mockk(),
            mockk(),
            selectedLocale
        )
        mockkObject(LocaleManager)
        mockkStatic("org.mozilla.fenix.settings.advanced.LocaleManagerExtensionKt")
        every { LocaleManager.getCurrentLocale(context) } returns mockk()
        every { LocaleManager.isDefaultLocaleSelected(context) } returns false

        controller.handleLocaleSelected(selectedLocale)

        verify(
            inverse = true,
            verifyBlock = { localeSettingsStore.dispatch(LocaleSettingsAction.Select(selectedLocale)) })
        verify(
            inverse = true,
            verifyBlock = { LocaleManager.setNewLocale(context, selectedLocale.toLanguageTag()) })
        verify(
            inverse = true,
            verifyBlock = { LocaleManager.updateBaseConfiguration(context, selectedLocale) })
        verify(inverse = true, verifyBlock = { (context as Activity).recreate() })
    }

    @Test
    fun `set a new locale from the list`() {
        val selectedLocale = Locale("en", "UK")
        val otherLocale: Locale = mock()
        every { localeSettingsStore.state } returns LocaleSettingsState(
            mockk(),
            mockk(),
            otherLocale
        )
        mockkObject(LocaleManager)
        mockkStatic("org.mozilla.fenix.settings.advanced.LocaleManagerExtensionKt")
        every { LocaleManager.updateBaseConfiguration(context, selectedLocale) } just Runs
        every {
            LocaleManager.setNewLocale(
                context,
                selectedLocale.toLanguageTag()
            )
        } returns context

        controller.handleLocaleSelected(selectedLocale)

        verify { localeSettingsStore.dispatch(LocaleSettingsAction.Select(selectedLocale)) }
        verify { LocaleManager.setNewLocale(context, selectedLocale.toLanguageTag()) }
        verify { LocaleManager.updateBaseConfiguration(context, selectedLocale) }
        verify { (context as Activity).recreate() }
    }

    @Test
    fun `don't set default locale if default locale is already chosen`() {
        val selectedLocale = Locale("en", "UK")
        val localeList = ArrayList<Locale>()
        localeList.add(selectedLocale)
        every { localeSettingsStore.state } returns LocaleSettingsState(
            localeList,
            mockk(),
            mockk()
        )
        mockkStatic("org.mozilla.fenix.settings.advanced.LocaleManagerExtensionKt")
        every { LocaleManager.isDefaultLocaleSelected(context) } returns true

        controller.handleDefaultLocaleSelected()

        verify(
            inverse = true,
            verifyBlock = { localeSettingsStore.dispatch(LocaleSettingsAction.Select(selectedLocale)) })
        verify(
            inverse = true,
            verifyBlock = { LocaleManager.resetToSystemDefault(context) })
        verify(
            inverse = true,
            verifyBlock = { LocaleManager.updateBaseConfiguration(context, selectedLocale) })
        verify(inverse = true, verifyBlock = { (context as Activity).recreate() })
    }

    @Test
    fun `set the default locale as the new locale`() {
        val selectedLocale = Locale("en", "UK")
        val localeList = ArrayList<Locale>()
        localeList.add(selectedLocale)
        every { localeSettingsStore.state } returns LocaleSettingsState(
            localeList,
            mockk(),
            mockk()
        )
        mockkObject(LocaleManager)
        mockkStatic("org.mozilla.fenix.settings.advanced.LocaleManagerExtensionKt")
        every { LocaleManager.resetToSystemDefault(context) } just Runs
        every { LocaleManager.updateBaseConfiguration(context, selectedLocale) } just Runs

        controller.handleDefaultLocaleSelected()

        verify { localeSettingsStore.dispatch(LocaleSettingsAction.Select(selectedLocale)) }
        verify { LocaleManager.resetToSystemDefault(context) }
        verify { LocaleManager.updateBaseConfiguration(context, selectedLocale) }
        verify { (context as Activity).recreate() }
    }

    @Test
    fun `handle search query typed`() {
        val query = "Eng"

        controller.handleSearchQueryTyped(query)

        verify { localeSettingsStore.dispatch(LocaleSettingsAction.Search(query)) }
    }
}