/**
 * Composable para gestionar eventos de Frigate
 * Usa proxy backend para evitar problemas de CORS/cookies entre subdominios
 * API Proxy: /api/frigate/event, /api/frigate/events
 */

export interface FrigateEventParams {
  label: string
  sub_label?: string
  duration?: number
  include_recording?: boolean
  draw?: {
    boxes?: Array<{
      box: [number, number, number, number]
      color?: [number, number, number]
      score?: number
    }>
  }
}

export interface FrigateEventResponse {
  success: boolean
  event_id?: string
  message?: string
}

export interface FrigateEvent {
  id: string
  label: string
  sub_label?: string
  camera: string
  start_time: number
  end_time?: number
  has_clip: boolean
  has_snapshot: boolean
  zones: string[]
}

export const useFrigateEvents = () => {
  // Ya no usamos URL publica, todo va por proxy interno

  const isCreating = useState<boolean>('frigate_creating', () => false)
  const isLoadingEvents = useState<boolean>('frigate_loading_events', () => false)
  const error = useState<string | null>('frigate_error', () => null)
  const lastEventId = useState<string | null>('frigate_last_event', () => null)
  const events = useState<FrigateEvent[]>('frigate_events', () => [])

  /**
   * Obtiene los eventos recientes de una camara
   */
  const fetchEvents = async (camera?: string, limit: number = 10): Promise<FrigateEvent[]> => {
    isLoadingEvents.value = true
    error.value = null

    try {
      const params = new URLSearchParams()
      if (camera) {
        params.set('camera', camera)
      }
      params.set('limit', limit.toString())

      const response = await $fetch<FrigateEvent[]>(`/api/frigate/events?${params.toString()}`)

      events.value = response
      return response
    } catch (err: unknown) {
      const errorMessage = (err as Error)?.message || 'Error al obtener eventos'
      error.value = errorMessage
      console.error('[Frigate] Error fetching events:', err)
      return []
    } finally {
      isLoadingEvents.value = false
    }
  }

  /**
   * Genera la URL del clip de un evento (via proxy interno)
   */
  const getEventClipUrl = (eventId: string): string => {
    return `/api/frigate/events/${eventId}/clip`
  }

  /**
   * Genera la URL del snapshot de un evento (via proxy interno)
   */
  const getEventSnapshotUrl = (eventId: string): string => {
    return `/api/frigate/events/${eventId}/snapshot`
  }

  /**
   * Formatea la fecha de un evento
   */
  const formatEventTime = (timestamp: number): string => {
    const date = new Date(timestamp * 1000)
    return date.toLocaleString('es-ES', {
      day: '2-digit',
      month: '2-digit',
      hour: '2-digit',
      minute: '2-digit'
    })
  }

  /**
   * Crea un evento en Frigate para una camara especifica via proxy
   */
  const createEvent = async (
    camera: string,
    params: FrigateEventParams
  ): Promise<FrigateEventResponse> => {
    isCreating.value = true
    error.value = null

    try {
      const response = await $fetch<FrigateEventResponse>('/api/frigate/event', {
        method: 'POST',
        body: {
          camera,
          ...params
        }
      })

      if (response.event_id) {
        lastEventId.value = response.event_id
      }

      return { success: true, ...response }
    } catch (err: unknown) {
      const errorMessage = (err as Error)?.message || 'Error al crear evento'
      error.value = errorMessage
      console.error('[Frigate] Error creating event:', err)
      return { success: false, message: errorMessage }
    } finally {
      isCreating.value = false
    }
  }

  /**
   * Crea un evento rapido "eventoWhisper" de 1 minuto
   */
  const createQuickEvent = async (camera: string): Promise<FrigateEventResponse> => {
    return createEvent(camera, {
      label: 'eventoWhisper',
      duration: 60,
      include_recording: true
    })
  }

  /**
   * Limpia el error
   */
  const clearError = () => {
    error.value = null
  }

  return {
    // Estado
    isCreating: readonly(isCreating),
    isLoadingEvents: readonly(isLoadingEvents),
    error: readonly(error),
    lastEventId: readonly(lastEventId),
    events: readonly(events),

    // Métodos
    fetchEvents,
    getEventClipUrl,
    getEventSnapshotUrl,
    formatEventTime,
    createEvent,
    createQuickEvent,
    clearError
  }
}