package com.roubao.autopilot

import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.SystemBarStyle
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
import androidx.activity.compose.BackHandler
import androidx.compose.animation.*
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.*
import androidx.compose.material.icons.outlined.*
import androidx.compose.material3.*
import androidx.compose.runtime.*
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.platform.LocalContext
import androidx.lifecycle.lifecycleScope
import android.net.Uri
import android.provider.Settings
import com.roubao.autopilot.agent.MobileAgent
import com.roubao.autopilot.controller.AppScanner
import com.roubao.autopilot.controller.DeviceController
import com.roubao.autopilot.data.*
import com.roubao.autopilot.readiness.DeviceReadinessChecker
import com.roubao.autopilot.readiness.DeviceReadinessSnapshot
import com.roubao.autopilot.readiness.PINDUODUO_PACKAGE
import com.roubao.autopilot.ui.screens.*
import com.roubao.autopilot.ui.theme.*
import androidx.compose.ui.graphics.toArgb
import androidx.core.view.WindowCompat
import com.roubao.autopilot.vlm.GUIOwlClient
import com.roubao.autopilot.vlm.MAIUIClient
import com.roubao.autopilot.vlm.VLMClient
import com.roubao.autopilot.task.RequirementProbeSource
import com.roubao.autopilot.vlm.AndroidRequirementVlmGateway
import com.roubao.autopilot.vlm.RequirementExtraction
import com.roubao.autopilot.vlm.RequirementExtractionFailureCode
import com.roubao.autopilot.vlm.RequirementExtractionInput
import com.roubao.autopilot.vlm.RequirementExtractionResult
import com.roubao.autopilot.vlm.RequirementExtractor
import com.roubao.autopilot.vlm.RequirementProbeState
import com.roubao.autopilot.vlm.RequirementProviderEndpointPolicy
import com.roubao.autopilot.vlm.AndroidCandidateEvaluationVlmGateway
import com.roubao.autopilot.vlm.CandidateBatchConclusion
import com.roubao.autopilot.vlm.CandidateEvaluationFailureCode
import com.roubao.autopilot.vlm.CandidateEvaluationImage
import com.roubao.autopilot.vlm.CandidateEvaluationInput
import com.roubao.autopilot.vlm.CandidateEvaluationResult
import com.roubao.autopilot.vlm.CandidateEvaluationState
import com.roubao.autopilot.vlm.CandidateEvaluator
import com.roubao.autopilot.vlm.CandidateReviewBatch
import com.roubao.autopilot.vlm.CandidateHumanReviewPolicy
import kotlinx.coroutines.CancellationException
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.Job
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import rikka.shizuku.Shizuku
import android.util.Log
import com.roubao.autopilot.pinduoduo.AndroidPinduoduoUiDriver
import com.roubao.autopilot.pinduoduo.AndroidPinduoduoCandidateDriver
import com.roubao.autopilot.pinduoduo.PinduoduoCandidateAutomation
import com.roubao.autopilot.pinduoduo.CandidateBrowsePhase
import com.roubao.autopilot.pinduoduo.PinduoduoCandidateEvidence
import com.roubao.autopilot.pinduoduo.PinduoduoCandidateWorkflow
import com.roubao.autopilot.pinduoduo.PinduoduoProbeAutomation
import com.roubao.autopilot.pinduoduo.PinduoduoSearchAutomation
import com.roubao.autopilot.pinduoduo.CandidateEvidenceSource
import com.roubao.autopilot.pinduoduo.SEARCH_PROBE_KEYWORD
import com.roubao.autopilot.workflow.WorkflowReport
import com.roubao.autopilot.workflow.WorkflowRunner
import com.roubao.autopilot.workflow.WorkflowState

private const val TAG = "MainActivity"

sealed class Screen(val route: String, val title: String, val icon: ImageVector, val selectedIcon: ImageVector) {
    object Device : Screen("device", "设备", Icons.Outlined.Build, Icons.Filled.Build)
    object Home : Screen("home", "探针", Icons.Outlined.Search, Icons.Filled.Search)
    object History : Screen("history", "记录", Icons.Outlined.List, Icons.Filled.List)
    object Settings : Screen("settings", "设置", Icons.Outlined.Settings, Icons.Filled.Settings)
}

class MainActivity : ComponentActivity() {

    private lateinit var deviceController: DeviceController
    private lateinit var settingsManager: SettingsManager
    private lateinit var executionRepository: ExecutionRepository
    private lateinit var readinessChecker: DeviceReadinessChecker
    private lateinit var requirementProbeSource: RequirementProbeSource
    private lateinit var candidateEvidenceSource: CandidateEvidenceSource

    private val mobileAgent = mutableStateOf<MobileAgent?>(null)
    private var shizukuAvailable = mutableStateOf(false)
    private val readinessSnapshot = mutableStateOf(DeviceReadinessSnapshot.empty())
    private val searchProbeState = mutableStateOf(WorkflowState.IDLE)
    private val searchProbeStepId = mutableStateOf<String?>(null)
    private val searchProbeReport = mutableStateOf<WorkflowReport?>(null)
    private val candidateEvidence =
        mutableStateOf<List<PinduoduoCandidateEvidence>>(emptyList())
    private val candidateSearchKeyword = mutableStateOf<String?>(null)
    private val candidateRequirementSnapshot =
        mutableStateOf<RequirementExtraction?>(null)
    private val requirementProbeState = mutableStateOf(RequirementProbeState.IDLE)
    private val requirementExtraction = mutableStateOf<RequirementExtraction?>(null)
    private val requirementFailureCode =
        mutableStateOf<RequirementExtractionFailureCode?>(null)
    private val candidateEvaluationState =
        mutableStateOf(CandidateEvaluationState.IDLE)
    private val candidateReviewBatch = mutableStateOf<CandidateReviewBatch?>(null)
    private val candidateEvaluationFailureCode =
        mutableStateOf<CandidateEvaluationFailureCode?>(null)
    private var searchProbeRunner: WorkflowRunner? = null
    private var searchProbeJob: Job? = null
    private var requirementProbeJob: Job? = null
    private var candidateEvaluationJob: Job? = null

    // 当前执行的协程 Job（用于停止任务）
    private var currentExecutionJob: kotlinx.coroutines.Job? = null

    // 执行记录列表
    private val executionRecords = mutableStateOf<List<ExecutionRecord>>(emptyList())

    // 是否正在执行（点击发送后立即为 true）
    private val isExecuting = mutableStateOf(false)

    // 当前执行的记录 ID（用于停止后跳转）
    private val currentRecordId = mutableStateOf<String?>(null)

    // 是否需要跳转到记录详情（悬浮窗停止后触发）
    private val shouldNavigateToRecord = mutableStateOf(false)

    private val binderReceivedListener = Shizuku.OnBinderReceivedListener {
        Log.d(TAG, "Shizuku binder received")
        shizukuAvailable.value = true
        if (checkShizukuPermission()) {
            Log.d(TAG, "Shizuku permission granted, binding service")
            deviceController.bindService()
        } else {
            Log.d(TAG, "Shizuku permission not granted")
        }
    }

    private val binderDeadListener = Shizuku.OnBinderDeadListener {
        Log.d(TAG, "Shizuku binder dead")
        shizukuAvailable.value = false
    }

    private val permissionResultListener = Shizuku.OnRequestPermissionResultListener { _, grantResult ->
        Log.d(TAG, "Shizuku permission result: $grantResult")
        if (grantResult == PackageManager.PERMISSION_GRANTED) {
            deviceController.bindService()
            Toast.makeText(this, "Shizuku 权限已获取", Toast.LENGTH_SHORT).show()
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        installSplashScreen()
        super.onCreate(savedInstanceState)

        // 设置边到边显示，深色状态栏和导航栏
        enableEdgeToEdge(
            statusBarStyle = SystemBarStyle.dark(android.graphics.Color.TRANSPARENT),
            navigationBarStyle = SystemBarStyle.dark(android.graphics.Color.TRANSPARENT)
        )

        deviceController = DeviceController(this)
        deviceController.setCacheDir(cacheDir)
        settingsManager = SettingsManager(this)
        executionRepository = ExecutionRepository(this)
        readinessChecker = DeviceReadinessChecker(this)
        requirementProbeSource = RequirementProbeSource(this)
        candidateEvidenceSource = CandidateEvidenceSource(this)
        refreshReadiness()

        // 加载执行记录
        lifecycleScope.launch {
            executionRecords.value = executionRepository.getAllRecords()
        }

        // 添加 Shizuku 监听器
        Shizuku.addBinderReceivedListenerSticky(binderReceivedListener)
        Shizuku.addBinderDeadListener(binderDeadListener)
        Shizuku.addRequestPermissionResultListener(permissionResultListener)

        // 检查 Shizuku 状态
        checkAndUpdateShizukuStatus()

        // 预加载已安装应用
        lifecycleScope.launch(Dispatchers.IO) {
            AppScanner(this@MainActivity).getApps()
        }

        setContent {
            val settings by settingsManager.settings.collectAsState()
            BaoziTheme(themeMode = settings.themeMode) {
                val colors = BaoziTheme.colors
                // 动态更新系统栏颜色
                SideEffect {
                    val window = this@MainActivity.window
                    window.statusBarColor = colors.background.toArgb()
                    window.navigationBarColor = colors.backgroundCard.toArgb()
                    WindowCompat.getInsetsController(window, window.decorView).apply {
                        isAppearanceLightStatusBars = !colors.isDark
                        isAppearanceLightNavigationBars = !colors.isDark
                    }
                }

                // 首次启动显示引导画面
                if (!settings.hasSeenOnboarding) {
                    OnboardingScreen(
                        onComplete = {
                            settingsManager.setOnboardingSeen()
                        }
                    )
                } else {
                    MainApp()
                }
            }
        }
    }

    @OptIn(ExperimentalMaterial3Api::class)
    @Composable
    fun MainApp() {
        var currentScreen by remember { mutableStateOf<Screen>(Screen.Home) }
        var selectedRecord by remember { mutableStateOf<ExecutionRecord?>(null) }

        val settings by settingsManager.settings.collectAsState()
        val colors = BaoziTheme.colors
        val records by remember { executionRecords }
        val isShizukuAvailable = shizukuAvailable.value && checkShizukuPermission()
        val navigateToRecord by remember { shouldNavigateToRecord }
        val recordId by remember { currentRecordId }
        val readiness by remember { readinessSnapshot }
        val probeState by remember { searchProbeState }
        val probeStepId by remember { searchProbeStepId }
        val probeReport by remember { searchProbeReport }
        val evidence by remember { candidateEvidence }
        val evidenceSearchKeyword by remember { candidateSearchKeyword }
        val evidenceRequirement by remember { candidateRequirementSnapshot }
        val extractionState by remember { requirementProbeState }
        val extraction by remember { requirementExtraction }
        val extractionFailure by remember { requirementFailureCode }
        val evaluationState by remember { candidateEvaluationState }
        val reviewBatch by remember { candidateReviewBatch }
        val evaluationFailure by remember { candidateEvaluationFailureCode }

        // 监听跳转事件
        LaunchedEffect(navigateToRecord, recordId) {
            if (navigateToRecord && recordId != null) {
                // 找到对应的记录并跳转
                val record = records.find { it.id == recordId }
                if (record != null) {
                    selectedRecord = record
                    currentScreen = Screen.History
                }
                shouldNavigateToRecord.value = false
            }
        }

        Scaffold(
            modifier = Modifier.background(colors.background),
            containerColor = colors.background,
            bottomBar = {
                if (selectedRecord == null) {
                    NavigationBar(
                        containerColor = colors.background,
                        contentColor = colors.textPrimary,
                        tonalElevation = 0.dp
                    ) {
                        listOf(Screen.Home, Screen.Device, Screen.History, Screen.Settings).forEach { screen ->
                            val selected = currentScreen == screen
                            NavigationBarItem(
                                icon = {
                                    Icon(
                                        imageVector = if (selected) screen.selectedIcon else screen.icon,
                                        contentDescription = screen.title
                                    )
                                },
                                label = { Text(screen.title) },
                                selected = selected,
                                onClick = { currentScreen = screen },
                                colors = NavigationBarItemDefaults.colors(
                                    selectedIconColor = if (colors.isDark) colors.textPrimary else Color.White,
                                    selectedTextColor = colors.primary,
                                    unselectedIconColor = colors.textSecondary,
                                    unselectedTextColor = colors.textSecondary,
                                    indicatorColor = colors.primary
                                )
                            )
                        }
                    }
                }
            }
        ) { padding ->
            Box(
                modifier = Modifier
                    .fillMaxSize()
                    .padding(padding)
            ) {
                // 处理系统返回手势
                BackHandler(enabled = selectedRecord != null) {
                    selectedRecord = null
                }

                // 详情页优先显示
                if (selectedRecord != null) {
                    HistoryDetailScreen(
                        record = selectedRecord!!,
                        onBack = { selectedRecord = null }
                    )
                } else {
                    // 主页面切换
                    AnimatedContent(
                        targetState = currentScreen,
                        transitionSpec = {
                            fadeIn() togetherWith fadeOut()
                        },
                        label = "screen"
                    ) { screen ->
                        when (screen) {
                            Screen.Device -> DeviceReadinessScreen(
                                snapshot = readiness,
                                onRefresh = { refreshReadiness() },
                                onOpenAccessibilitySettings = {
                                    startActivity(Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS))
                                },
                                onOpenPinduoduo = { openPinduoduo() }
                            )
                            Screen.Home -> SearchProbeScreen(
                                readiness = readiness,
                                state = probeState,
                                currentStepId = probeStepId,
                                report = probeReport,
                                candidateEvidenceCount = evidence.size,
                                searchKeyword = evidenceSearchKeyword
                                    ?: extraction?.searchQuery
                                    ?: SEARCH_PROBE_KEYWORD,
                                usesRequirementSearch =
                                    evidenceRequirement != null ||
                                        extractionState == RequirementProbeState.READY,
                                requirementState = extractionState,
                                requirement = extraction,
                                requirementFailureCode = extractionFailure,
                                candidateEvaluationState = evaluationState,
                                candidateReviewBatch = reviewBatch,
                                candidateEvaluationFailureCode = evaluationFailure,
                                canStartCandidateEvaluation =
                                    extractionState == RequirementProbeState.READY &&
                                        extraction != null &&
                                        evidenceRequirement == extraction &&
                                        evidenceSearchKeyword == extraction?.searchQuery &&
                                        probeReport?.state == WorkflowState.SUCCEEDED &&
                                        evidence.isNotEmpty(),
                                onStartRequirement = { startRequirementProbe() },
                                onStopRequirement = { stopRequirementProbe() },
                                onStartCandidateEvaluation = {
                                    startCandidateEvaluation()
                                },
                                onStopCandidateEvaluation = {
                                    stopCandidateEvaluation()
                                },
                                onAcceptCandidate = { acceptRecommendedCandidate() },
                                onRejectCandidates = { rejectCandidateReview() },
                                onStart = { startSearchProbe() },
                                onStop = { stopSearchProbe() }
                            )
                            Screen.History -> HistoryScreen(
                                records = records,
                                onRecordClick = { record -> selectedRecord = record },
                                onDeleteRecord = { id -> deleteRecord(id) }
                            )
                            Screen.Settings -> SettingsScreen(
                                settings = settings,
                                onUpdateApiKey = { settingsManager.updateApiKey(it) },
                                onUpdateBaseUrl = { settingsManager.updateBaseUrl(it) },
                                onUpdateModel = { settingsManager.updateModel(it) },
                                onUpdateCachedModels = { settingsManager.updateCachedModels(it) },
                                onUpdateThemeMode = { settingsManager.updateThemeMode(it) },
                                onUpdateMaxSteps = { settingsManager.updateMaxSteps(it) },
                                onUpdateRootModeEnabled = { settingsManager.updateRootModeEnabled(it) },
                                onUpdateSuCommandEnabled = { settingsManager.updateSuCommandEnabled(it) },
                                onSelectProvider = { settingsManager.selectProvider(it) },
                                shizukuAvailable = isShizukuAvailable,
                                shizukuPrivilegeLevel = if (isShizukuAvailable) {
                                    when (deviceController.getShizukuPrivilegeLevel()) {
                                        DeviceController.ShizukuPrivilegeLevel.ROOT -> "ROOT"
                                        DeviceController.ShizukuPrivilegeLevel.ADB -> "ADB"
                                        else -> "NONE"
                                    }
                                } else "NONE",
                                onFetchModels = { onSuccess, onError ->
                                    lifecycleScope.launch {
                                        val result = VLMClient.fetchModels(settings.baseUrl, settings.apiKey)
                                        result.onSuccess { models ->
                                            onSuccess(models)
                                        }.onFailure { error ->
                                            onError(error.message ?: "未知错误")
                                        }
                                    }
                                }
                            )
                        }
                    }
                }
            }
        }

    }

    private fun deleteRecord(id: String) {
        lifecycleScope.launch {
            executionRepository.deleteRecord(id)
            executionRecords.value = executionRepository.getAllRecords()
        }
    }

    override fun onResume() {
        super.onResume()
        if (::readinessChecker.isInitialized) {
            refreshReadiness()
            lifecycleScope.launch {
                delay(READINESS_RECHECK_DELAY_MS)
                refreshReadiness()
            }
        }
    }

    override fun onDestroy() {
        searchProbeRunner?.requestStop()
        requirementProbeJob?.cancel()
        candidateEvaluationJob?.cancel()
        super.onDestroy()
        Shizuku.removeBinderReceivedListener(binderReceivedListener)
        Shizuku.removeBinderDeadListener(binderDeadListener)
        Shizuku.removeRequestPermissionResultListener(permissionResultListener)
        deviceController.unbindService()
    }

    private fun refreshReadiness() {
        readinessSnapshot.value = readinessChecker.snapshot()
    }

    private fun openPinduoduo() {
        val launchIntent = packageManager.getLaunchIntentForPackage(PINDUODUO_PACKAGE)
        if (launchIntent == null) {
            Toast.makeText(this, "未安装拼多多", Toast.LENGTH_SHORT).show()
            refreshReadiness()
            return
        }
        startActivity(launchIntent)
    }

    private fun startSearchProbe() {
        val readiness = readinessChecker.snapshot()
        readinessSnapshot.value = readiness
        if (!readiness.canStartProbe) {
            Toast.makeText(this, "设备检查存在阻塞项", Toast.LENGTH_SHORT).show()
            return
        }
        if (searchProbeJob?.isActive == true) {
            return
        }
        if (candidateEvaluationJob?.isActive == true) {
            Toast.makeText(this, "请先停止候选评估", Toast.LENGTH_SHORT).show()
            return
        }

        val boundRequirement = requirementExtraction.value?.takeIf {
            requirementProbeState.value == RequirementProbeState.READY &&
                !it.manualReviewRequired
        }
        val searchKeyword = boundRequirement?.searchQuery ?: SEARCH_PROBE_KEYWORD
        val candidateAutomation = PinduoduoCandidateAutomation(
            AndroidPinduoduoCandidateDriver(this)
        )
        candidateAutomation.reset()
        val runner = WorkflowRunner(
            PinduoduoProbeAutomation(
                searchAutomation = PinduoduoSearchAutomation(
                    driver = AndroidPinduoduoUiDriver(this),
                    keyword = searchKeyword,
                    forceKeywordEntry = boundRequirement != null
                ),
                candidateAutomation = candidateAutomation
            )
        )
        searchProbeRunner = runner
        searchProbeReport.value = null
        searchProbeState.value = WorkflowState.IDLE
        searchProbeStepId.value = null
        candidateEvidence.value = emptyList()
        candidateSearchKeyword.value = searchKeyword
        candidateRequirementSnapshot.value = boundRequirement
        clearCandidateEvaluation()
        searchProbeJob = lifecycleScope.launch {
            val stateCollector = launch {
                runner.state.collect { state -> searchProbeState.value = state }
            }
            val stepCollector = launch {
                runner.currentStepId.collect { stepId -> searchProbeStepId.value = stepId }
            }
            val evidenceCollector = launch {
                candidateAutomation.evidence.collect { evidence ->
                    candidateEvidence.value = evidence
                }
            }
            val candidatePhaseCollector = launch {
                candidateAutomation.phase.collect { phase ->
                    if (phase != CandidateBrowsePhase.IDLE) {
                        Log.d(TAG, "Candidate probe phase: ${phase.name}")
                    }
                }
            }
            try {
                val report = runner.run(PinduoduoCandidateWorkflow.steps())
                searchProbeReport.value = report
                searchProbeState.value = report.state
            } finally {
                stateCollector.cancel()
                stepCollector.cancel()
                evidenceCollector.cancel()
                candidatePhaseCollector.cancel()
                searchProbeRunner = null
                refreshReadiness()
            }
        }
    }

    private fun stopSearchProbe() {
        searchProbeRunner?.requestStop()
    }

    private fun startRequirementProbe() {
        if (requirementProbeJob?.isActive == true) {
            return
        }
        if (searchProbeJob?.isActive == true) {
            Toast.makeText(this, "请先停止候选探针", Toast.LENGTH_SHORT).show()
            return
        }
        if (candidateEvaluationJob?.isActive == true) {
            Toast.makeText(this, "请先停止候选评估", Toast.LENGTH_SHORT).show()
            return
        }
        candidateEvidence.value = emptyList()
        candidateSearchKeyword.value = null
        candidateRequirementSnapshot.value = null
        searchProbeReport.value = null
        clearCandidateEvaluation()
        requirementExtraction.value = null
        requirementFailureCode.value = null

        val settings = settingsManager.settings.value
        val provider = settings.currentProvider
        if (!provider.supportsRequirementExtraction) {
            setRequirementFailure(RequirementExtractionFailureCode.PROVIDER_UNSUPPORTED)
            return
        }
        if (settings.baseUrl.isBlank() || settings.model.isBlank()) {
            setRequirementFailure(RequirementExtractionFailureCode.PROVIDER_NOT_CONFIGURED)
            return
        }
        if (
            !RequirementProviderEndpointPolicy.isAllowed(
                baseUrl = settings.baseUrl,
                apiKey = settings.apiKey
            )
        ) {
            setRequirementFailure(RequirementExtractionFailureCode.UNSAFE_PROVIDER_ENDPOINT)
            return
        }
        if (
            settings.apiKey.isNotBlank() &&
            !settingsManager.isSecureCredentialStorageAvailable
        ) {
            setRequirementFailure(
                RequirementExtractionFailureCode.SECURE_CREDENTIAL_STORAGE_UNAVAILABLE
            )
            return
        }
        if (provider.id != ApiProvider.CUSTOM.id && settings.apiKey.isBlank()) {
            setRequirementFailure(RequirementExtractionFailureCode.PROVIDER_NOT_CONFIGURED)
            return
        }

        requirementProbeState.value = RequirementProbeState.RUNNING
        requirementExtraction.value = null
        requirementFailureCode.value = null
        requirementProbeJob = lifecycleScope.launch {
            try {
                val fixture = requirementProbeSource.loadFirst().getOrElse {
                    setRequirementFailure(RequirementExtractionFailureCode.SOURCE_UNAVAILABLE)
                    return@launch
                } ?: run {
                    setRequirementFailure(RequirementExtractionFailureCode.SOURCE_UNAVAILABLE)
                    return@launch
                }
                val client = VLMClient(
                    apiKey = settings.apiKey,
                    baseUrl = settings.baseUrl,
                    model = settings.model
                )
                val result = RequirementExtractor(
                    gateway = AndroidRequirementVlmGateway(client),
                    providerId = provider.id,
                    model = settings.model
                ).extract(
                    RequirementExtractionInput.from(
                        task = fixture.task,
                        imageBytes = fixture.referenceImageBytes
                    )
                )
                when (result) {
                    is RequirementExtractionResult.Completed -> {
                        requirementExtraction.value = result.extraction
                        requirementProbeState.value =
                            if (result.extraction.manualReviewRequired) {
                                RequirementProbeState.MANUAL_REVIEW
                            } else {
                                RequirementProbeState.READY
                            }
                    }
                    is RequirementExtractionResult.Failed -> {
                        setRequirementFailure(result.code)
                    }
                }
            } catch (error: CancellationException) {
                requirementProbeState.value = RequirementProbeState.STOPPED
                throw error
            } finally {
                requirementProbeJob = null
            }
        }
    }

    private fun stopRequirementProbe() {
        requirementProbeJob?.cancel()
    }

    private fun setRequirementFailure(code: RequirementExtractionFailureCode) {
        requirementExtraction.value = null
        requirementFailureCode.value = code
        requirementProbeState.value = RequirementProbeState.FAILED
    }

    private fun startCandidateEvaluation() {
        if (candidateEvaluationJob?.isActive == true) {
            return
        }
        if (searchProbeJob?.isActive == true || requirementProbeJob?.isActive == true) {
            Toast.makeText(this, "请先停止其他探针", Toast.LENGTH_SHORT).show()
            return
        }
        val requirement = requirementExtraction.value
        if (
            requirement == null ||
            requirementProbeState.value != RequirementProbeState.READY ||
            requirement.manualReviewRequired
        ) {
            setCandidateEvaluationFailure(
                CandidateEvaluationFailureCode.REQUIREMENT_NOT_READY
            )
            return
        }
        val evidence = candidateEvidence.value
        if (
            searchProbeReport.value?.state != WorkflowState.SUCCEEDED ||
            evidence.isEmpty()
        ) {
            setCandidateEvaluationFailure(
                CandidateEvaluationFailureCode.EVIDENCE_UNAVAILABLE
            )
            return
        }
        if (
            candidateRequirementSnapshot.value != requirement ||
            candidateSearchKeyword.value != requirement.searchQuery
        ) {
            setCandidateEvaluationFailure(
                CandidateEvaluationFailureCode.EVIDENCE_REQUIREMENT_MISMATCH
            )
            return
        }

        val settings = settingsManager.settings.value
        val provider = settings.currentProvider
        when {
            !provider.supportsRequirementExtraction -> {
                setCandidateEvaluationFailure(
                    CandidateEvaluationFailureCode.PROVIDER_UNSUPPORTED
                )
                return
            }
            settings.baseUrl.isBlank() || settings.model.isBlank() -> {
                setCandidateEvaluationFailure(
                    CandidateEvaluationFailureCode.PROVIDER_NOT_CONFIGURED
                )
                return
            }
            !RequirementProviderEndpointPolicy.isAllowed(
                baseUrl = settings.baseUrl,
                apiKey = settings.apiKey
            ) -> {
                setCandidateEvaluationFailure(
                    CandidateEvaluationFailureCode.UNSAFE_PROVIDER_ENDPOINT
                )
                return
            }
            settings.apiKey.isNotBlank() &&
                !settingsManager.isSecureCredentialStorageAvailable -> {
                setCandidateEvaluationFailure(
                    CandidateEvaluationFailureCode
                        .SECURE_CREDENTIAL_STORAGE_UNAVAILABLE
                )
                return
            }
            provider.id != ApiProvider.CUSTOM.id && settings.apiKey.isBlank() -> {
                setCandidateEvaluationFailure(
                    CandidateEvaluationFailureCode.PROVIDER_NOT_CONFIGURED
                )
                return
            }
        }

        candidateEvaluationState.value = CandidateEvaluationState.RUNNING
        candidateReviewBatch.value = null
        candidateEvaluationFailureCode.value = null
        candidateEvaluationJob = lifecycleScope.launch {
            try {
                val validated = candidateEvidenceSource.load(evidence).getOrElse {
                    setCandidateEvaluationFailure(
                        CandidateEvaluationFailureCode.EVIDENCE_INVALID
                    )
                    return@launch
                }
                val client = VLMClient(
                    apiKey = settings.apiKey,
                    baseUrl = settings.baseUrl,
                    model = settings.model
                )
                val result = CandidateEvaluator(
                    gateway = AndroidCandidateEvaluationVlmGateway(client),
                    providerId = provider.id,
                    model = settings.model
                ).evaluate(
                    CandidateEvaluationInput(
                        requirement = requirement,
                        candidates = validated.map { candidate ->
                            CandidateEvaluationImage(
                                ordinal = candidate.ordinal,
                                mediaType = "image/png",
                                bytes = candidate.pngBytes,
                                sha256 = candidate.sha256
                            )
                        }
                    )
                )
                when (result) {
                    is CandidateEvaluationResult.Completed -> {
                        candidateReviewBatch.value = result.batch
                        candidateEvaluationState.value = when (
                            result.batch.conclusion
                        ) {
                            CandidateBatchConclusion.SUGGESTED ->
                                CandidateEvaluationState.AWAITING_CONFIRMATION
                            CandidateBatchConclusion.NO_MATCH ->
                                CandidateEvaluationState.NO_MATCH
                            CandidateBatchConclusion.MANUAL_REQUIRED ->
                                CandidateEvaluationState.MANUAL_REVIEW
                        }
                    }
                    is CandidateEvaluationResult.Failed -> {
                        setCandidateEvaluationFailure(result.code)
                    }
                }
            } catch (error: CancellationException) {
                candidateEvaluationState.value = CandidateEvaluationState.STOPPED
                throw error
            } finally {
                candidateEvaluationJob = null
            }
        }
    }

    private fun stopCandidateEvaluation() {
        candidateEvaluationJob?.cancel()
    }

    private fun acceptRecommendedCandidate() {
        candidateEvaluationState.value = CandidateHumanReviewPolicy.accept(
            currentState = candidateEvaluationState.value,
            batch = candidateReviewBatch.value
        )
    }

    private fun rejectCandidateReview() {
        candidateEvaluationState.value = CandidateHumanReviewPolicy.reject(
            candidateEvaluationState.value
        )
    }

    private fun setCandidateEvaluationFailure(
        code: CandidateEvaluationFailureCode
    ) {
        candidateReviewBatch.value = null
        candidateEvaluationFailureCode.value = code
        candidateEvaluationState.value = CandidateEvaluationState.FAILED
    }

    private fun clearCandidateEvaluation() {
        candidateEvaluationJob?.cancel()
        candidateReviewBatch.value = null
        candidateEvaluationFailureCode.value = null
        candidateEvaluationState.value = CandidateEvaluationState.IDLE
    }

    private fun checkShizukuPermission(): Boolean {
        return try {
            val granted = Shizuku.checkSelfPermission() == PackageManager.PERMISSION_GRANTED
            Log.d(TAG, "checkShizukuPermission: $granted")
            granted
        } catch (e: Exception) {
            Log.e(TAG, "checkShizukuPermission error", e)
            false
        }
    }

    private fun checkAndUpdateShizukuStatus(requestPermission: Boolean = false) {
        Log.d(TAG, "checkAndUpdateShizukuStatus called")
        try {
            val binderAlive = Shizuku.pingBinder()
            Log.d(TAG, "Shizuku pingBinder: $binderAlive")

            if (binderAlive) {
                shizukuAvailable.value = true
                val hasPermission = checkShizukuPermission()
                Log.d(TAG, "Shizuku hasPermission: $hasPermission")

                if (hasPermission) {
                    Log.d(TAG, "Binding Shizuku service")
                    deviceController.bindService()
                } else if (requestPermission) {
                    Log.d(TAG, "Requesting Shizuku permission")
                    requestShizukuPermission()
                }
            } else {
                Log.d(TAG, "Shizuku binder not alive")
                shizukuAvailable.value = false
            }
        } catch (e: Exception) {
            Log.e(TAG, "checkAndUpdateShizukuStatus error", e)
            shizukuAvailable.value = false
        }
    }

    private fun refreshShizukuStatus() {
        Log.d(TAG, "refreshShizukuStatus called by user")
        Toast.makeText(this, "正在检查 Shizuku 状态...", Toast.LENGTH_SHORT).show()
        checkAndUpdateShizukuStatus(requestPermission = true)

        if (shizukuAvailable.value && checkShizukuPermission()) {
            Toast.makeText(this, "Shizuku 已连接", Toast.LENGTH_SHORT).show()
        } else if (shizukuAvailable.value) {
            Toast.makeText(this, "请在弹窗中授权 Shizuku", Toast.LENGTH_SHORT).show()
        } else {
            Toast.makeText(this, "请先启动 Shizuku App", Toast.LENGTH_SHORT).show()
        }
    }

    private fun requestShizukuPermission() {
        try {
            if (!Shizuku.pingBinder()) {
                Toast.makeText(this, "请先启动 Shizuku App", Toast.LENGTH_SHORT).show()
                return
            }

            if (Shizuku.isPreV11()) {
                Toast.makeText(this, "Shizuku 版本过低", Toast.LENGTH_SHORT).show()
                return
            }

            if (Shizuku.checkSelfPermission() == PackageManager.PERMISSION_GRANTED) {
                Toast.makeText(this, "Shizuku 权限已获取", Toast.LENGTH_SHORT).show()
                shizukuAvailable.value = true
                deviceController.bindService()
                return
            }

            Shizuku.requestPermission(0)
        } catch (e: Exception) {
            Toast.makeText(this, "请先启动 Shizuku App", Toast.LENGTH_SHORT).show()
        }
    }

    private companion object {
        const val READINESS_RECHECK_DELAY_MS = 750L
    }

    private fun runAgent(
        instruction: String,
        apiKey: String,
        baseUrl: String,
        model: String,
        maxSteps: Int,
        isGUIAgent: Boolean = false,
        providerId: String = ""
    ) {
        if (instruction.isBlank()) {
            Toast.makeText(this, "请输入指令", Toast.LENGTH_SHORT).show()
            return
        }
        // MAI-UI 本地部署不需要 API Key
        val requiresApiKey = providerId != "mai_ui"
        if (requiresApiKey && apiKey.isBlank()) {
            Toast.makeText(this, "请输入 API Key", Toast.LENGTH_SHORT).show()
            return
        }

        // 检查悬浮窗权限
        if (!Settings.canDrawOverlays(this)) {
            Toast.makeText(this, "请授予悬浮窗权限", Toast.LENGTH_LONG).show()
            val intent = android.content.Intent(
                Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                Uri.parse("package:$packageName")
            )
            startActivity(intent)
            return
        }

        // 立即设置执行状态为 true，显示停止按钮
        isExecuting.value = true

        // 根据服务商类型创建相应的客户端
        if (isGUIAgent) {
            // GUI-Owl 模式
            val guiOwlClient = GUIOwlClient(
                apiKey = apiKey,
                model = model.ifBlank { "pre-gui_owl_7b" }
            )
            mobileAgent.value = MobileAgent(
                vlmClient = null,
                controller = deviceController,
                context = this,
                guiOwlClient = guiOwlClient
            )
        } else if (providerId == "mai_ui") {
            // MAI-UI 模式
            val maiuiClient = MAIUIClient(
                baseUrl = baseUrl.ifBlank { "http://localhost:8000/v1" },
                model = model.ifBlank { "MAI-UI-2B" }
            )
            mobileAgent.value = MobileAgent(
                vlmClient = null,
                controller = deviceController,
                context = this,
                maiuiClient = maiuiClient
            )
        } else {
            // OpenAI 兼容模式 (阿里云 Qwen-VL, OpenAI, OpenRouter 等)
            val vlmClient = VLMClient(
                apiKey = apiKey,
                baseUrl = baseUrl.ifBlank { "https://dashscope.aliyuncs.com/compatible-mode/v1" },
                model = model.ifBlank { "qwen3-vl-plus" }
            )
            mobileAgent.value = MobileAgent(vlmClient, deviceController, this)
        }

        // 设置停止回调，用于取消协程
        mobileAgent.value?.onStopRequested = {
            currentExecutionJob?.cancel()
            currentExecutionJob = null
        }

        // 创建执行记录
        val record = ExecutionRecord(
            title = generateTitle(instruction),
            instruction = instruction,
            startTime = System.currentTimeMillis(),
            status = ExecutionStatus.RUNNING
        )

        // 保存当前记录 ID，用于停止后跳转
        currentRecordId.value = record.id

        // 取消之前的任务（如果有）
        currentExecutionJob?.cancel()

        currentExecutionJob = lifecycleScope.launch {
            // 保存初始记录
            executionRepository.saveRecord(record)
            executionRecords.value = executionRepository.getAllRecords()

            try {
                val result = mobileAgent.value!!.runInstruction(instruction, maxSteps)

                // 更新记录状态
                val agentState = mobileAgent.value?.state?.value
                val steps = agentState?.executionSteps ?: emptyList()
                val currentLogs = mobileAgent.value?.logs?.value ?: emptyList()

                val updatedRecord = record.copy(
                    endTime = System.currentTimeMillis(),
                    status = if (result.success) ExecutionStatus.COMPLETED else ExecutionStatus.FAILED,
                    steps = steps,
                    logs = currentLogs,
                    resultMessage = result.message
                )
                executionRepository.saveRecord(updatedRecord)
                executionRecords.value = executionRepository.getAllRecords()

                Toast.makeText(this@MainActivity, result.message, Toast.LENGTH_LONG).show()

                // 重置执行状态
                isExecuting.value = false

                // 延迟3秒后清空日志，恢复默认状态
                kotlinx.coroutines.delay(3000)
                mobileAgent.value?.clearLogs()
            } catch (e: kotlinx.coroutines.CancellationException) {
                // 用户取消任务 - 使用 NonCancellable 确保清理操作完成
                kotlinx.coroutines.withContext(kotlinx.coroutines.NonCancellable) {
                    val agentState = mobileAgent.value?.state?.value
                    val steps = agentState?.executionSteps ?: emptyList()
                    val currentLogs = mobileAgent.value?.logs?.value ?: emptyList()

                    println("[MainActivity] 取消任务 - steps: ${steps.size}, logs: ${currentLogs.size}")

                    val updatedRecord = record.copy(
                        endTime = System.currentTimeMillis(),
                        status = ExecutionStatus.STOPPED,
                        steps = steps,
                        logs = currentLogs,
                        resultMessage = "已取消"
                    )
                    executionRepository.saveRecord(updatedRecord)
                    executionRecords.value = executionRepository.getAllRecords()

                    // 重置执行状态
                    isExecuting.value = false

                    Toast.makeText(this@MainActivity, "任务已停止", Toast.LENGTH_SHORT).show()
                    mobileAgent.value?.clearLogs()

                    // 触发跳转到记录详情页
                    shouldNavigateToRecord.value = true
                }
            } catch (e: Exception) {
                // 更新失败记录
                val currentLogs = mobileAgent.value?.logs?.value ?: emptyList()
                val updatedRecord = record.copy(
                    endTime = System.currentTimeMillis(),
                    status = ExecutionStatus.FAILED,
                    logs = currentLogs,
                    resultMessage = "错误: ${e.message}"
                )
                executionRepository.saveRecord(updatedRecord)
                executionRecords.value = executionRepository.getAllRecords()

                // 重置执行状态
                isExecuting.value = false

                Toast.makeText(this@MainActivity, "错误: ${e.message}", Toast.LENGTH_LONG).show()

                // 延迟3秒后清空日志，恢复默认状态
                kotlinx.coroutines.delay(3000)
                mobileAgent.value?.clearLogs()
            }
        }
    }

    private fun generateTitle(instruction: String): String {
        // 生成简短标题
        val keywords = listOf(
            "打开" to "打开应用",
            "点" to "点餐",
            "发" to "发送消息",
            "看" to "浏览内容",
            "搜" to "搜索",
            "设置" to "调整设置",
            "播放" to "播放媒体"
        )
        for ((key, title) in keywords) {
            if (instruction.contains(key)) {
                return title
            }
        }
        return if (instruction.length > 10) instruction.take(10) + "..." else instruction
    }
}