package com.android.launcher3.model

import android.content.Context
import android.os.UserHandle
import android.platform.test.flag.junit.SetFlagsRule
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.SmallTest
import androidx.test.platform.app.InstrumentationRegistry
import com.android.launcher3.Flags
import com.android.launcher3.InvariantDeviceProfile
import com.android.launcher3.LauncherAppState
import com.android.launcher3.LauncherModel
import com.android.launcher3.LauncherModel.LoaderTransaction
import com.android.launcher3.icons.IconCache
import com.android.launcher3.icons.cache.CachingLogic
import com.android.launcher3.icons.cache.IconCacheUpdateHandler
import com.android.launcher3.pm.UserCache
import com.android.launcher3.util.Executors.MODEL_EXECUTOR
import com.android.launcher3.util.LooperIdleLock
import com.android.launcher3.util.UserIconInfo
import com.android.launcher3.util.rule.StaticMockitoRule
import com.google.common.truth.Truth
import java.util.concurrent.CountDownLatch
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
import org.mockito.ArgumentMatchers.any
import org.mockito.Mock
import org.mockito.Mockito
import org.mockito.Mockito.times
import org.mockito.Mockito.verify
import org.mockito.Mockito.`when`
import org.mockito.MockitoAnnotations
import org.mockito.Spy

private const val INSERTION_STATEMENT_FILE = "databases/workspace_items.sql"

@SmallTest
@RunWith(AndroidJUnit4::class)
class LoaderTaskTest {
    @Mock private lateinit var app: LauncherAppState
    @Mock private lateinit var bgAllAppsList: AllAppsList
    @Mock private lateinit var modelDelegate: ModelDelegate
    @Mock private lateinit var launcherBinder: LauncherBinder
    @Mock private lateinit var launcherModel: LauncherModel
    @Mock private lateinit var transaction: LoaderTransaction
    @Mock private lateinit var iconCache: IconCache
    @Mock private lateinit var idleLock: LooperIdleLock
    @Mock private lateinit var iconCacheUpdateHandler: IconCacheUpdateHandler
    @Mock private lateinit var userCache: UserCache

    @Spy private var userManagerState: UserManagerState? = UserManagerState()

    @get:Rule(order = 0) val staticMockitoRule = StaticMockitoRule(UserCache::class.java)
    @get:Rule(order = 1)
    val setFlagsRule = SetFlagsRule().apply { initAllFlagsToReleaseConfigDefault() }

    @Before
    fun setup() {
        val context = InstrumentationRegistry.getInstrumentation().targetContext
        val idp =
            InvariantDeviceProfile.INSTANCE[context].apply {
                numRows = 5
                numColumns = 6
                numDatabaseHotseatIcons = 5
            }

        MockitoAnnotations.initMocks(this)
        `when`(app.context).thenReturn(context)
        `when`(app.model).thenReturn(launcherModel)
        `when`(launcherModel.beginLoader(any(LoaderTask::class.java))).thenReturn(transaction)
        `when`(app.iconCache).thenReturn(iconCache)
        `when`(launcherModel.modelDbController)
            .thenReturn(FactitiousDbController(context, INSERTION_STATEMENT_FILE))
        `when`(app.invariantDeviceProfile).thenReturn(idp)
        `when`(launcherBinder.newIdleLock(any(LoaderTask::class.java))).thenReturn(idleLock)
        `when`(idleLock.awaitLocked(1000)).thenReturn(false)
        `when`(iconCache.updateHandler).thenReturn(iconCacheUpdateHandler)
        `when`(UserCache.getInstance(any(Context::class.java))).thenReturn(userCache)
    }

    @Test
    fun loadsDataProperly() =
        with(BgDataModel()) {
            LoaderTask(app, bgAllAppsList, this, modelDelegate, launcherBinder)
                .runSyncOnBackgroundThread()
            Truth.assertThat(workspaceItems.size).isAtLeast(25)
            Truth.assertThat(appWidgets.size).isAtLeast(7)
            Truth.assertThat(folders.size()).isAtLeast(8)
            Truth.assertThat(itemsIdMap.size()).isAtLeast(40)
        }

    @Test
    fun bindsLoadedDataCorrectly() {
        LoaderTask(app, bgAllAppsList, BgDataModel(), modelDelegate, launcherBinder)
            .runSyncOnBackgroundThread()

        verify(launcherBinder).bindWorkspace(true, false)
        verify(modelDelegate).workspaceLoadComplete()
        verify(modelDelegate).loadAndBindAllAppsItems(any(), any(), any())
        verify(launcherBinder).bindAllApps()
        verify(iconCacheUpdateHandler, times(4)).updateIcons(any(), any<CachingLogic<Any>>(), any())
        verify(launcherBinder).bindDeepShortcuts()
        verify(launcherBinder).bindWidgets()
        verify(modelDelegate).loadAndBindOtherItems(any())
        verify(iconCacheUpdateHandler).finish()
        verify(modelDelegate).modelLoadComplete()
        verify(transaction).commit()
    }

    @Test
    fun setsQuietModeFlagCorrectlyForWorkProfile() =
        with(BgDataModel()) {
            setFlagsRule.enableFlags(Flags.FLAG_ENABLE_PRIVATE_SPACE)
            val MAIN_HANDLE = UserHandle.of(0)
            val mockUserHandles = arrayListOf<UserHandle>(MAIN_HANDLE)
            `when`(userCache.userProfiles).thenReturn(mockUserHandles)
            `when`(userManagerState?.isUserQuiet(MAIN_HANDLE)).thenReturn(true)
            `when`(userCache.getUserInfo(MAIN_HANDLE)).thenReturn(UserIconInfo(MAIN_HANDLE, 1))

            LoaderTask(app, bgAllAppsList, this, modelDelegate, launcherBinder, userManagerState)
                .runSyncOnBackgroundThread()

            verify(bgAllAppsList)
                .setFlags(BgDataModel.Callbacks.FLAG_WORK_PROFILE_QUIET_MODE_ENABLED, true)
            verify(bgAllAppsList)
                .setFlags(BgDataModel.Callbacks.FLAG_PRIVATE_PROFILE_QUIET_MODE_ENABLED, false)
            verify(bgAllAppsList, Mockito.never())
                .setFlags(BgDataModel.Callbacks.FLAG_QUIET_MODE_ENABLED, true)
        }

    @Test
    fun setsQuietModeFlagCorrectlyForPrivateProfile() =
        with(BgDataModel()) {
            setFlagsRule.enableFlags(Flags.FLAG_ENABLE_PRIVATE_SPACE)
            val MAIN_HANDLE = UserHandle.of(0)
            val mockUserHandles = arrayListOf<UserHandle>(MAIN_HANDLE)
            `when`(userCache.userProfiles).thenReturn(mockUserHandles)
            `when`(userManagerState?.isUserQuiet(MAIN_HANDLE)).thenReturn(true)
            `when`(userCache.getUserInfo(MAIN_HANDLE)).thenReturn(UserIconInfo(MAIN_HANDLE, 3))

            LoaderTask(app, bgAllAppsList, this, modelDelegate, launcherBinder, userManagerState)
                .runSyncOnBackgroundThread()

            verify(bgAllAppsList)
                .setFlags(BgDataModel.Callbacks.FLAG_WORK_PROFILE_QUIET_MODE_ENABLED, false)
            verify(bgAllAppsList)
                .setFlags(BgDataModel.Callbacks.FLAG_PRIVATE_PROFILE_QUIET_MODE_ENABLED, true)
            verify(bgAllAppsList, Mockito.never())
                .setFlags(BgDataModel.Callbacks.FLAG_QUIET_MODE_ENABLED, true)
        }
}

private fun LoaderTask.runSyncOnBackgroundThread() {
    val latch = CountDownLatch(1)
    MODEL_EXECUTOR.execute {
        run()
        latch.countDown()
    }
    latch.await()
}