'use server'

import { revalidatePath } from 'next/cache'
import { auth } from '@/lib/auth'
import { eventService } from '@/services/events/event.service'
import { Role, EventType } from '@/prisma/generated/prisma/client'
import { ValidationError, NotFoundError } from '@/services/errors'

function checkAdminAccess() {
  return async () => {
    const session = await auth()
    if (!session?.user || session.user.role !== Role.ADMIN) {
      throw new Error('Accès refusé')
    }
    return session
  }
}

export async function createEvent(data: {
  date: string
  name: string
  description?: string | null
  type: string
  room?: string | null
  time?: string | null
  maxPlaces?: number | null
}) {
  try {
    await checkAdminAccess()()

    const event = await eventService.validateAndCreateEvent({
      date: data.date,
      name: data.name,
      description: data.description ?? '',
      type: data.type as EventType,
      room: data.room ?? undefined,
      time: data.time ?? undefined,
      maxPlaces: data.maxPlaces ?? undefined,
    })

    revalidatePath('/admin')
    revalidatePath('/events')
    revalidatePath('/')

    return { success: true, data: event }
  } catch (error) {
    console.error('Error creating event:', error)

    if (error instanceof ValidationError) {
      return { success: false, error: error.message }
    }
    if (error instanceof Error && error.message === 'Accès refusé') {
      return { success: false, error: 'Accès refusé' }
    }

    return { success: false, error: 'Erreur lors de la création de l\'événement' }
  }
}

export async function updateEvent(eventId: string, data: {
  date?: string
  name?: string
  description?: string | null
  type?: string
  room?: string | null
  time?: string | null
  maxPlaces?: number | null
}) {
  try {
    await checkAdminAccess()()

    const event = await eventService.validateAndUpdateEvent(eventId, {
      date: data.date,
      name: data.name,
      description: data.description ?? undefined,
      type: data.type as EventType,
      room: data.room ?? undefined,
      time: data.time ?? undefined,
      maxPlaces: data.maxPlaces ?? undefined,
    })

    revalidatePath('/admin')
    revalidatePath('/events')
    revalidatePath('/')

    return { success: true, data: event }
  } catch (error) {
    console.error('Error updating event:', error)

    if (error instanceof ValidationError) {
      return { success: false, error: error.message }
    }
    if (error instanceof NotFoundError) {
      return { success: false, error: error.message }
    }
    if (error instanceof Error && error.message === 'Accès refusé') {
      return { success: false, error: 'Accès refusé' }
    }

    return { success: false, error: 'Erreur lors de la mise à jour de l\'événement' }
  }
}

export async function deleteEvent(eventId: string) {
  try {
    await checkAdminAccess()()

    const existingEvent = await eventService.getEventById(eventId)

    if (!existingEvent) {
      return { success: false, error: 'Événement non trouvé' }
    }

    await eventService.deleteEvent(eventId)

    revalidatePath('/admin')
    revalidatePath('/events')
    revalidatePath('/')

    return { success: true }
  } catch (error) {
    console.error('Error deleting event:', error)

    if (error instanceof Error && error.message === 'Accès refusé') {
      return { success: false, error: 'Accès refusé' }
    }

    return { success: false, error: 'Erreur lors de la suppression de l\'événement' }
  }
}