/* 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.components.toolbar

import android.content.Context
import android.content.Intent
import androidx.lifecycle.LifecycleCoroutineScope
import androidx.navigation.NavController
import androidx.navigation.NavDirections
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
import io.mockk.Runs
import io.mockk.every
import io.mockk.just
import io.mockk.mockk
import io.mockk.mockkStatic
import io.mockk.slot
import io.mockk.verify
import io.mockk.verifyOrder
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.newSingleThreadContext
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.test.resetMain
import kotlinx.coroutines.test.runBlockingTest
import kotlinx.coroutines.test.setMain
import mozilla.appservices.places.BookmarkRoot
import mozilla.components.browser.session.Session
import mozilla.components.browser.session.SessionManager
import mozilla.components.browser.state.state.BrowserState
import mozilla.components.browser.state.state.ReaderState
import mozilla.components.browser.state.state.createTab
import mozilla.components.browser.state.store.BrowserStore
import mozilla.components.concept.engine.EngineView
import mozilla.components.feature.search.SearchUseCases
import mozilla.components.feature.session.SessionUseCases
import mozilla.components.feature.tab.collections.TabCollection
import org.junit.After
import org.junit.Assert.assertEquals
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import org.mozilla.fenix.HomeActivity
import org.mozilla.fenix.R
import org.mozilla.fenix.browser.BrowserAnimator
import org.mozilla.fenix.browser.BrowserFragmentDirections
import org.mozilla.fenix.browser.readermode.ReaderModeController
import org.mozilla.fenix.collections.SaveCollectionStep
import org.mozilla.fenix.components.Analytics
import org.mozilla.fenix.components.FenixSnackbar
import org.mozilla.fenix.components.TabCollectionStorage
import org.mozilla.fenix.components.TopSiteStorage
import org.mozilla.fenix.components.metrics.Event
import org.mozilla.fenix.components.metrics.MetricController
import org.mozilla.fenix.ext.components
import org.mozilla.fenix.ext.nav
import org.mozilla.fenix.ext.settings
import org.mozilla.fenix.ext.toTab
import org.mozilla.fenix.helpers.FenixRobolectricTestRunner
import org.mozilla.fenix.home.Tab
import org.mozilla.fenix.settings.deletebrowsingdata.deleteAndQuit

@ExperimentalCoroutinesApi
@RunWith(FenixRobolectricTestRunner::class)
class DefaultBrowserToolbarControllerTest {

    private val mainThreadSurrogate = newSingleThreadContext("UI thread")
    private var swipeRefreshLayout: SwipeRefreshLayout = mockk(relaxed = true)
    private var activity: HomeActivity = mockk(relaxed = true)
    private var analytics: Analytics = mockk(relaxed = true)
    private var navController: NavController = mockk(relaxed = true)
    private var findInPageLauncher: () -> Unit = mockk(relaxed = true)
    private val engineView: EngineView = mockk(relaxed = true)
    private val currentSession: Session = mockk(relaxed = true)
    private val openInFenixIntent: Intent = mockk(relaxed = true)
    private val currentSessionAsTab: Tab = mockk(relaxed = true)
    private val metrics: MetricController = mockk(relaxed = true)
    private val searchUseCases: SearchUseCases = mockk(relaxed = true)
    private val sessionUseCases: SessionUseCases = mockk(relaxed = true)
    private val scope: LifecycleCoroutineScope = mockk(relaxed = true)
    private val browserAnimator: BrowserAnimator = mockk(relaxed = true)
    private val snackbar = mockk<FenixSnackbar>(relaxed = true)
    private val tabCollectionStorage = mockk<TabCollectionStorage>(relaxed = true)
    private val topSiteStorage = mockk<TopSiteStorage>(relaxed = true)
    private val readerModeController = mockk<ReaderModeController>(relaxed = true)
    private val store: BrowserStore = BrowserStore(initialState = BrowserState(
        listOf(
            createTab("https://www.mozilla.org", id = "reader-inactive-tab"),
            createTab("https://www.mozilla.org", id = "reader-active-tab", readerState = ReaderState(active = true))
        ))
    )

    private lateinit var controller: DefaultBrowserToolbarController

    @Before
    fun setUp() {
        Dispatchers.setMain(mainThreadSurrogate)

        controller = DefaultBrowserToolbarController(
            activity = activity,
            navController = navController,
            findInPageLauncher = findInPageLauncher,
            engineView = engineView,
            browserAnimator = browserAnimator,
            customTabSession = null,
            openInFenixIntent = openInFenixIntent,
            scope = scope,
            swipeRefresh = swipeRefreshLayout,
            tabCollectionStorage = tabCollectionStorage,
            topSiteStorage = topSiteStorage,
            bookmarkTapped = mockk(),
            readerModeController = readerModeController,
            sessionManager = mockk(),
            sharedViewModel = mockk(),
            onTabCounterClicked = { }
        )

        mockkStatic(
            "org.mozilla.fenix.ext.SessionKt"
        )
        every { any<Session>().toTab(any<Context>()) } returns currentSessionAsTab

        mockkStatic(
            "org.mozilla.fenix.settings.deletebrowsingdata.DeleteAndQuitKt"
        )
        every { deleteAndQuit(any(), any(), snackbar) } just Runs

        every { activity.components.analytics } returns analytics
        every { analytics.metrics } returns metrics
        every { activity.components.useCases.sessionUseCases } returns sessionUseCases
        every { activity.components.useCases.searchUseCases } returns searchUseCases
        every { activity.components.core.sessionManager.selectedSession } returns currentSession
        every { activity.components.core.store } returns store

        val onComplete = slot<() -> Unit>()
        every { browserAnimator.captureEngineViewAndDrawStatically(capture(onComplete)) } answers { onComplete.captured.invoke() }
    }

    @After
    fun tearDown() {
        Dispatchers.resetMain() // reset main dispatcher to the original Main dispatcher
        mainThreadSurrogate.close()
    }

    @Test
    fun handleBrowserToolbarPaste() {
        every { currentSession.id } returns "1"

        val pastedText = "Mozilla"
        controller.handleToolbarPaste(pastedText)

        verify {
            val directions = BrowserFragmentDirections.actionBrowserFragmentToSearchFragment(
                sessionId = "1",
                pastedText = pastedText
            )
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleBrowserToolbarPasteAndGoSearch() {
        val pastedText = "Mozilla"

        controller.handleToolbarPasteAndGo(pastedText)
        verifyOrder {
            currentSession.searchTerms = "Mozilla"
            searchUseCases.defaultSearch.invoke(pastedText)
        }
    }

    @Test
    fun handleBrowserToolbarPasteAndGoUrl() {
        val pastedText = "https://mozilla.org"

        controller.handleToolbarPasteAndGo(pastedText)
        verifyOrder {
            currentSession.searchTerms = ""
            sessionUseCases.loadUrl(pastedText)
        }
    }

    @Test
    fun `handle BrowserMenu dismissed with all options available`() = runBlockingTest {
        val itemList: List<ToolbarMenu.Item> = listOf(
            ToolbarMenu.Item.AddToHomeScreen,
            ToolbarMenu.Item.ReaderMode(true),
            ToolbarMenu.Item.OpenInApp
        )

        val activity = HomeActivity()

        controller = DefaultBrowserToolbarController(
            activity = activity,
            navController = navController,
            findInPageLauncher = findInPageLauncher,
            engineView = engineView,
            browserAnimator = browserAnimator,
            customTabSession = null,
            openInFenixIntent = openInFenixIntent,
            scope = this,
            swipeRefresh = swipeRefreshLayout,
            tabCollectionStorage = tabCollectionStorage,
            topSiteStorage = topSiteStorage,
            bookmarkTapped = mockk(),
            readerModeController = mockk(),
            sessionManager = mockk(),
            sharedViewModel = mockk(),
            onTabCounterClicked = { }
        )

        controller.handleBrowserMenuDismissed(itemList)

        assertEquals(true, activity.settings().installPwaOpened)
        assertEquals(true, activity.settings().readerModeOpened)
        assertEquals(true, activity.settings().openInAppOpened)
    }

    @Test
    fun handleToolbarClick() {
        every { currentSession.id } returns "1"

        controller.handleToolbarClick()

        verify { metrics.track(Event.SearchBarTapped(Event.SearchBarTapped.Source.BROWSER)) }
        verify {
            val directions = BrowserFragmentDirections.actionBrowserFragmentToSearchFragment(
                sessionId = "1"
            )
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleToolbarBackPress() {
        val item = ToolbarMenu.Item.Back

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.BACK)) }
        verify { sessionUseCases.goBack }
    }

    @Test
    fun handleToolbarForwardPress() {
        val item = ToolbarMenu.Item.Forward

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.FORWARD)) }
        verify { sessionUseCases.goForward }
    }

    @Test
    fun handleToolbarReloadPress() {
        val item = ToolbarMenu.Item.Reload

        every { activity.components.useCases.sessionUseCases } returns sessionUseCases

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.RELOAD)) }
        verify { sessionUseCases.reload }
    }

    @Test
    fun handleToolbarStopPress() {
        val item = ToolbarMenu.Item.Stop

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.STOP)) }
        verify { sessionUseCases.stopLoading }
    }

    @Test
    fun handleToolbarSettingsPress() = runBlocking {
        val item = ToolbarMenu.Item.Settings

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.SETTINGS)) }
        verify {
            val directions = BrowserFragmentDirections.actionBrowserFragmentToSettingsFragment()
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleToolbarBookmarksPress() {
        val item = ToolbarMenu.Item.Bookmarks

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.BOOKMARKS)) }
        verify {
            val directions = BrowserFragmentDirections.actionGlobalBookmarkFragment(BookmarkRoot.Mobile.id)
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleToolbarHistoryPress() {
        val item = ToolbarMenu.Item.History

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.HISTORY)) }
        verify {
            val directions = BrowserFragmentDirections.actionGlobalHistoryFragment()
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleToolbarRequestDesktopOnPress() {
        val requestDesktopSiteUseCase: SessionUseCases.RequestDesktopSiteUseCase =
            mockk(relaxed = true)
        val item = ToolbarMenu.Item.RequestDesktop(true)

        every { sessionUseCases.requestDesktopSite } returns requestDesktopSiteUseCase

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.DESKTOP_VIEW_ON)) }
        verify {
            requestDesktopSiteUseCase.invoke(
                true,
                currentSession
            )
        }
    }

    @Test
    fun handleToolbarRequestDesktopOffPress() {
        val requestDesktopSiteUseCase: SessionUseCases.RequestDesktopSiteUseCase =
            mockk(relaxed = true)
        val item = ToolbarMenu.Item.RequestDesktop(false)

        every { sessionUseCases.requestDesktopSite } returns requestDesktopSiteUseCase

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.DESKTOP_VIEW_OFF)) }
        verify {
            requestDesktopSiteUseCase.invoke(
                false,
                currentSession
            )
        }
    }

    @Test
    fun handleToolbarAddToTopSitesPressed() = runBlockingTest {
        val item = ToolbarMenu.Item.AddToTopSites

        controller = DefaultBrowserToolbarController(
            activity = activity,
            navController = navController,
            findInPageLauncher = findInPageLauncher,
            engineView = engineView,
            browserAnimator = browserAnimator,
            customTabSession = null,
            openInFenixIntent = openInFenixIntent,
            scope = this,
            swipeRefresh = swipeRefreshLayout,
            tabCollectionStorage = tabCollectionStorage,
            topSiteStorage = topSiteStorage,
            bookmarkTapped = mockk(),
            readerModeController = mockk(),
            sessionManager = mockk(),
            sharedViewModel = mockk(),
            onTabCounterClicked = { }
        )
        controller.ioScope = this

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.ADD_TO_TOP_SITES)) }
    }

    @Test
    fun handleToolbarAddonsManagerPress() = runBlockingTest {
        val item = ToolbarMenu.Item.AddonsManager

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.ADDONS_MANAGER)) }
    }

    @Test
    fun handleToolbarAddToHomeScreenPress() {
        val item = ToolbarMenu.Item.AddToHomeScreen

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.ADD_TO_HOMESCREEN)) }
    }

    @Test
    fun handleToolbarSharePress() {
        val item = ToolbarMenu.Item.Share

        every { currentSession.url } returns "https://mozilla.org"

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.SHARE)) }
        verify { navController.navigate(any<NavDirections>()) }
    }

    @Test
    fun handleToolbarFindInPagePress() {
        val item = ToolbarMenu.Item.FindInPage

        controller.handleToolbarItemInteraction(item)

        verify { findInPageLauncher() }
        verify { metrics.track(Event.FindInPageOpened) }
    }

    @Test
    fun handleToolbarSaveToCollectionPressWhenAtLeastOneCollectionExists() {
        val item = ToolbarMenu.Item.SaveToCollection
        val cachedTabCollections: List<TabCollection> = mockk(relaxed = true)
        every { activity.components.useCases.sessionUseCases } returns sessionUseCases
        every { activity.components.core.tabCollectionStorage.cachedTabCollections } returns cachedTabCollections

        controller.handleToolbarItemInteraction(item)

        verify {
            metrics.track(
                Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.SAVE_TO_COLLECTION)
            )
        }
        verify {
            metrics.track(
                Event.CollectionSaveButtonPressed(DefaultBrowserToolbarController.TELEMETRY_BROWSER_IDENTIFIER)
            )
        }
        verify {
            val directions =
                BrowserFragmentDirections.actionGlobalCollectionCreationFragment(
                    saveCollectionStep = SaveCollectionStep.SelectCollection,
                    tabIds = arrayOf(currentSession.id),
                    selectedTabIds = arrayOf(currentSession.id)
                )
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleToolbarSaveToCollectionPressWhenNoCollectionsExists() {
        val item = ToolbarMenu.Item.SaveToCollection
        val cachedTabCollectionsEmpty: List<TabCollection> = emptyList()
        every { activity.components.useCases.sessionUseCases } returns sessionUseCases
        every { activity.components.core.tabCollectionStorage.cachedTabCollections } returns cachedTabCollectionsEmpty

        controller.handleToolbarItemInteraction(item)

        verify { metrics.track(Event.BrowserMenuItemTapped(Event.BrowserMenuItemTapped.Item.SAVE_TO_COLLECTION)) }
        verify {
            metrics.track(
                Event.CollectionSaveButtonPressed(
                    DefaultBrowserToolbarController.TELEMETRY_BROWSER_IDENTIFIER
                )
            )
        }
        verify {
            val directions =
                BrowserFragmentDirections.actionGlobalCollectionCreationFragment(
                    saveCollectionStep = SaveCollectionStep.NameCollection,
                    tabIds = arrayOf(currentSession.id),
                    selectedTabIds = arrayOf(currentSession.id)
                )
            navController.nav(R.id.browserFragment, directions)
        }
    }

    @Test
    fun handleToolbarOpenInFenixPress() {
        controller = DefaultBrowserToolbarController(
            activity = activity,
            navController = navController,
            findInPageLauncher = findInPageLauncher,
            engineView = engineView,
            browserAnimator = browserAnimator,
            customTabSession = currentSession,
            openInFenixIntent = openInFenixIntent,
            scope = scope,
            swipeRefresh = swipeRefreshLayout,
            tabCollectionStorage = tabCollectionStorage,
            topSiteStorage = topSiteStorage,
            bookmarkTapped = mockk(),
            readerModeController = mockk(),
            sessionManager = mockk(),
            sharedViewModel = mockk(),
            onTabCounterClicked = { }
        )

        val sessionManager: SessionManager = mockk(relaxed = true)
        val item = ToolbarMenu.Item.OpenInFenix

        every { activity.components.core.sessionManager } returns sessionManager
        every { currentSession.customTabConfig } returns mockk()
        every { activity.startActivity(any()) } just Runs

        controller.handleToolbarItemInteraction(item)

        verify { engineView.release() }
        verify { currentSession.customTabConfig = null }
        verify { sessionManager.select(currentSession) }
        verify { activity.startActivity(openInFenixIntent) }
        verify { activity.finish() }
    }

    @Test
    fun handleToolbarQuitPress() = runBlockingTest {
        val item = ToolbarMenu.Item.Quit
        val testScope = this

        controller = DefaultBrowserToolbarController(
            activity = activity,
            navController = navController,
            findInPageLauncher = findInPageLauncher,
            engineView = engineView,
            browserAnimator = browserAnimator,
            customTabSession = null,
            openInFenixIntent = openInFenixIntent,
            scope = testScope,
            swipeRefresh = swipeRefreshLayout,
            tabCollectionStorage = tabCollectionStorage,
            topSiteStorage = topSiteStorage,
            bookmarkTapped = mockk(),
            readerModeController = mockk(),
            sessionManager = mockk(),
            sharedViewModel = mockk(),
            onTabCounterClicked = { }
        )

        controller.handleToolbarItemInteraction(item)

        verify { deleteAndQuit(activity, testScope, null) }
    }

    @Test
    fun handleToolbarReaderModePress() {
        val item = ToolbarMenu.Item.ReaderMode(false)

        every { currentSession.id } returns "reader-inactive-tab"
        controller.handleToolbarItemInteraction(item)
        verify { readerModeController.showReaderView() }

        every { currentSession.id } returns "reader-active-tab"
        controller.handleToolbarItemInteraction(item)
        verify { readerModeController.hideReaderView() }
    }
}