import { create } from 'zustand'
import { persist } from 'zustand/middleware'
import type { Zone } from '@/app/types'

export interface DetectorType {
  detector_id: number
  name: string
  serial_number: string
  object: string
  status: string
  type: string
  detector_type: string
  location: string
  floor: number
  checked: boolean
  notifications: Array<{
    id: number
    type: string
    message: string
    timestamp: string
    acknowledged: boolean
    priority: string
  }>
}

interface NotificationType {
  id: number
  detector_id: number
  detector_name: string
  type: string
  status: string
  message: string
  timestamp: string
  location: string
  object: string
  acknowledged: boolean
  priority: string
}

interface AlertType {
  id: number
  detector_id: number
  detector_name: string
  type: string
  status: string
  message: string
  timestamp: string
  location: string
  object: string
  acknowledged: boolean
  priority: string
}

export interface NavigationStore {
  currentObject: { id: string | undefined; title: string | undefined }
  navigationHistory: string[]
  currentSubmenu: string | null
  currentModelPath: string | null
  
  // Состояния Зон
  currentZones: Zone[]
  zonesCache: Record<string, Zone[]>
  zonesLoading: boolean
  zonesError: string | null
  
  showMonitoring: boolean
  showFloorNavigation: boolean
  showNotifications: boolean
  showListOfDetectors: boolean
  showSensors: boolean
  showSensorHighlights: boolean
  
  selectedDetector: DetectorType | null
  showDetectorMenu: boolean
  selectedNotification: NotificationType | null
  showNotificationDetectorInfo: boolean
  selectedAlert: AlertType | null
  showAlertMenu: boolean
  
  setCurrentObject: (id: string | undefined, title: string | undefined) => void
  clearCurrentObject: () => void
  addToHistory: (path: string) => void
  goBack: () => string | null
  setCurrentModelPath: (path: string) => void
  
  setCurrentSubmenu: (submenu: string | null) => void
  clearSubmenu: () => void
  
  // Действия с зонами
  loadZones: (objectId: string) => Promise<void>
  setZones: (zones: Zone[]) => void
  clearZones: () => void
  
  openMonitoring: () => void
  closeMonitoring: () => void
  openFloorNavigation: () => void
  closeFloorNavigation: () => void
  openNotifications: () => void
  closeNotifications: () => void
  openListOfDetectors: () => void
  closeListOfDetectors: () => void
  openSensors: () => void
  closeSensors: () => void
  toggleSensorHighlights: () => void
  setSensorHighlights: (show: boolean) => void
  
  closeAllMenus: () => void
  clearSelections: () => void
  
  setSelectedDetector: (detector: DetectorType | null) => void
  setShowDetectorMenu: (show: boolean) => void
  setSelectedNotification: (notification: NotificationType | null) => void
  setShowNotificationDetectorInfo: (show: boolean) => void
  setSelectedAlert: (alert: AlertType | null) => void
  setShowAlertMenu: (show: boolean) => void
  
  isOnNavigationPage: () => boolean
  getCurrentRoute: () => string | null
  getActiveSidebarItem: () => number
  
  // Навигация к датчику на 3D-модели
  navigateToSensor: (sensorSerialNumber: string, floor: number | null, viewType: 'building' | 'floor') => Promise<string | null>
}

const useNavigationStore = create<NavigationStore>()(
  persist(
    (set, get) => ({ 
      currentObject: {
        id: undefined,
        title: undefined,
      },
      navigationHistory: [],
      currentSubmenu: null,
      currentModelPath: null,
      
      currentZones: [],
      zonesCache: {},
      zonesLoading: false,
      zonesError: null,
      
      showMonitoring: false,
      showFloorNavigation: false,
      showNotifications: false,
      showListOfDetectors: false,
      showSensors: false,
      showSensorHighlights: true,
      
      selectedDetector: null,
      showDetectorMenu: false,
      selectedNotification: null,
      showNotificationDetectorInfo: false,
      selectedAlert: null,
      showAlertMenu: false,

      setCurrentObject: (id: string | undefined, title: string | undefined) => 
        set({ currentObject: { id, title } }),
      
      clearCurrentObject: () => 
        set({ currentObject: { id: undefined, title: undefined } }),
      
      setCurrentModelPath: (path: string) => set({ currentModelPath: path }),

      addToHistory: (path: string) => {
        const { navigationHistory } = get()
        const newHistory = [...navigationHistory, path] 
        if (newHistory.length > 10) {
          newHistory.shift()
        }
        set({ navigationHistory: newHistory })
      },
      
      goBack: () => {
        const { navigationHistory } = get()
        if (navigationHistory.length > 1) {
          const newHistory = [...navigationHistory]
          newHistory.pop()  
          const previousPage = newHistory.pop() 
          set({ navigationHistory: newHistory })
          return previousPage || null
        }
        return null
      },
      
      setCurrentSubmenu: (submenu: string | null) => 
        set({ currentSubmenu: submenu }),
      
      clearSubmenu: () => 
        set({ currentSubmenu: null }),
      
      loadZones: async (objectId: string) => {
        const cache = get().zonesCache
        const cached = cache[objectId]
        const hasCached = Array.isArray(cached) && cached.length > 0
        if (hasCached) {
          // Показываем кэшированные зоны сразу, но обновляем в фоне
          set({ currentZones: cached, zonesLoading: true, zonesError: null })
        } else {
          set({ zonesLoading: true, zonesError: null })
        }
        try {
          const res = await fetch(`/api/get-zones?objectId=${encodeURIComponent(objectId)}`, { cache: 'no-store' })
          const text = await res.text()
          let payload: string | Record<string, unknown>
          try { payload = JSON.parse(text) } catch { payload = text }
          if (!res.ok) throw new Error(typeof payload === 'string' ? payload : (payload?.error as string || 'Не удалось получить зоны'))
          const zones: Zone[] = typeof payload === 'string' ? [] : 
            Array.isArray(payload?.data) ? payload.data as Zone[] : 
            (payload?.data && typeof payload.data === 'object' && 'zones' in payload.data ? (payload.data as { zones?: Zone[] }).zones : 
             payload?.zones ? payload.zones as Zone[] : []) || []
          const normalized = zones.map((z) => ({
            ...z,
            image_path: z.image_path ?? null,
          }))
          set((state) => ({
            currentZones: normalized,
            zonesCache: { ...state.zonesCache, [objectId]: normalized },
            zonesLoading: false,
            zonesError: null,
          }))
        } catch (e: unknown) {
          set({ zonesLoading: false, zonesError: (e as Error)?.message || 'Ошибка при загрузке зон' })
        }
      },
      
      setZones: (zones: Zone[]) => set({ currentZones: zones }),
      clearZones: () => set({ currentZones: [] }),
      
      openMonitoring: () => {
        set({ 
          showMonitoring: true, 
          showFloorNavigation: false, 
          showNotifications: false,
          showListOfDetectors: false,
          currentSubmenu: 'monitoring',
          showDetectorMenu: false,
          selectedDetector: null,
          showNotificationDetectorInfo: false,
          selectedNotification: null,
          zonesError: null // Очищаем ошибку зон при открытии мониторинга
        })
        const objId = get().currentObject.id
        if (objId) {
          // Вызываем загрузку зон сразу, но обновляем в фоне
          get().loadZones(objId)
        }
      },
      
      closeMonitoring: () => set({ 
        showMonitoring: false, 
        currentSubmenu: null 
      }),
      
      openFloorNavigation: () => set({ 
        showFloorNavigation: true, 
        showMonitoring: false, 
        showNotifications: false,
        showListOfDetectors: false,
        currentSubmenu: 'floors',
        showNotificationDetectorInfo: false,
        selectedNotification: null
      }),
      
      closeFloorNavigation: () => set({ 
        showFloorNavigation: false, 
        showDetectorMenu: false,
        selectedDetector: null,
        currentSubmenu: null 
      }),
      
      openNotifications: () => set({ 
        showNotifications: true, 
        showMonitoring: false, 
        showFloorNavigation: false,
        showListOfDetectors: false,
        currentSubmenu: 'notifications',
        showDetectorMenu: false,
        selectedDetector: null
      }),
      
      closeNotifications: () => set({ 
        showNotifications: false, 
        showNotificationDetectorInfo: false,
        selectedNotification: null,
        currentSubmenu: null 
      }),
      
      openListOfDetectors: () => set({ 
        showListOfDetectors: true, 
        showMonitoring: false, 
        showFloorNavigation: false,
        showNotifications: false,
        currentSubmenu: 'detectors',
        showDetectorMenu: false,
        selectedDetector: null,
        showNotificationDetectorInfo: false,
        selectedNotification: null
      }),
      
      closeListOfDetectors: () => set({ 
        showListOfDetectors: false, 
        showDetectorMenu: false,
        selectedDetector: null,
        currentSubmenu: null 
      }),
      
      openSensors: () => set({ 
        showSensors: true, 
        showMonitoring: false, 
        showFloorNavigation: false,
        showNotifications: false,
        showListOfDetectors: false,
        currentSubmenu: 'sensors',
        showDetectorMenu: false,
        selectedDetector: null,
        showNotificationDetectorInfo: false,
        selectedNotification: null
      }),
      
      closeSensors: () => set({ 
        showSensors: false, 
        showDetectorMenu: false,
        selectedDetector: null,
        currentSubmenu: null 
      }),
      
      toggleSensorHighlights: () => set((state) => ({ showSensorHighlights: !state.showSensorHighlights })),
      setSensorHighlights: (show: boolean) => set({ showSensorHighlights: show }),
      
      closeAllMenus: () => {
        set({
          showMonitoring: false,
          showFloorNavigation: false,
          showNotifications: false,
          showListOfDetectors: false,
          showSensors: false,
          currentSubmenu: null,
        });
        get().clearSelections();
      },
      
      clearSelections: () => set({
        selectedDetector: null,
        showDetectorMenu: false,
        selectedAlert: null,
        showAlertMenu: false,
      }),

      setSelectedDetector: (detector: DetectorType | null) => set({ selectedDetector: detector }),
      setShowDetectorMenu: (show: boolean) => set({ showDetectorMenu: show }),
      setSelectedNotification: (notification: NotificationType | null) => set({ selectedNotification: notification }),
      setShowNotificationDetectorInfo: (show: boolean) => set({ showNotificationDetectorInfo: show }),
      setSelectedAlert: (alert: AlertType | null) => set({ selectedAlert: alert }),
      setShowAlertMenu: (show: boolean) => set({ showAlertMenu: show }),
 
      isOnNavigationPage: () => {
        const { navigationHistory } = get()
        const currentRoute = navigationHistory[navigationHistory.length - 1]
        return currentRoute === '/navigation'
      },
      
      getCurrentRoute: () => {
        const { navigationHistory } = get()
        return navigationHistory[navigationHistory.length - 1] || null
      },
      
      getActiveSidebarItem: () => {
        const { showMonitoring, showFloorNavigation, showNotifications, showListOfDetectors, showSensors } = get()
        if (showMonitoring) return 3 // Зоны Мониторинга
        if (showFloorNavigation) return 4 // Навигация по этажам
        if (showNotifications) return 5 // Уведомления
        if (showListOfDetectors) return 7 // Список датчиков
        if (showSensors) return 8 // Сенсоры
        return 2 // Навигация (базовая)
      },
      
      // Навигация к датчику на 3D-модели
      navigateToSensor: async (sensorSerialNumber: string, floor: number | null, viewType: 'building' | 'floor') => {
        const { currentObject, loadZones } = get()
        
        if (!currentObject.id) {
          console.error('[navigateToSensor] No current object selected')
          return null
        }
        
        // Загружаем зоны для объекта (из кэша или API)
        await loadZones(currentObject.id)
        
        const { currentZones } = get()
        
        if (!currentZones || currentZones.length === 0) {
          console.error('[navigateToSensor] No zones available for object', currentObject.id)
          return null
        }
        
        let targetZone: Zone | undefined
        
        if (viewType === 'building') {
          // Для общего вида здания - ищем самую верхнюю зону (первую в списке)
          targetZone = currentZones[0]
          console.log('[navigateToSensor] Building view - selected first zone:', targetZone?.name)
        } else if (viewType === 'floor') {
          // Для вида на этаже - ищем зону, где есть этот датчик
          // Сначала проверяем зоны с sensors массивом
          for (const zone of currentZones) {
            if (zone.sensors && Array.isArray(zone.sensors)) {
              const hasSensor = zone.sensors.some(s => 
                s.serial_number === sensorSerialNumber || 
                s.name === sensorSerialNumber
              )
              if (hasSensor) {
                targetZone = zone
                console.log('[navigateToSensor] Found sensor in zone:', zone.name, 'sensors:', zone.sensors.length)
                break
              }
            }
          }
          
          // Если не нашли по sensors, пробуем по floor
          if (!targetZone && floor !== null) {
            // Ищем зоны с соответствующим floor (кроме общего вида)
            const floorZones = currentZones.filter(z => 
              z.floor === floor && 
              z.order !== 0 && 
              z.model_path
            )
            
            if (floorZones.length > 0) {
              targetZone = floorZones[0]
              console.log('[navigateToSensor] Found zone by floor:', targetZone.name, 'floor:', floor)
            }
          }
          
          // Fallback на общий вид, если не нашли зону этажа
          if (!targetZone) {
            console.warn(`[navigateToSensor] No zone found with sensor ${sensorSerialNumber} or floor ${floor}, falling back to building view`)
            targetZone = currentZones[0]
          }
        }
        
        if (!targetZone || !targetZone.model_path) {
          console.error('[navigateToSensor] No valid zone with model_path found')
          return null
        }
        
        // Устанавливаем состояние для навигации
        set({
          currentModelPath: targetZone.model_path,
          // Открываем Зоны контроля (Monitoring) - она автоматически закроется после загрузки модели
          showMonitoring: true,
          // Закрываем остальные меню
          showFloorNavigation: false,
          showNotifications: false,
          showListOfDetectors: false,
          // НЕ закрываем showSensors - оставляем как есть для подсветки датчиков
          // showSensors: false, <- Убрали!
          showDetectorMenu: false,
          showAlertMenu: false,
          selectedDetector: null,
          selectedAlert: null,
        })
        
        console.log('[navigateToSensor] Navigation prepared:', {
          sensorSerialNumber,
          floor,
          viewType,
          modelPath: targetZone.model_path,
          zoneName: targetZone.name,
          zoneId: targetZone.id
        })
        
        // Возвращаем serial_number для установки focusedSensorId в компоненте
        return sensorSerialNumber
      }
    }),
    {
      name: 'navigation-store',
    }
  )
)

export default useNavigationStore