'use server'

import { revalidatePath } from 'next/cache'
import { auth } from '@/lib/auth'
import { userService } from '@/services/users/user.service'
import { userStatsService } from '@/services/users/user-stats.service'
import { Role } from '@/prisma/generated/prisma/client'
import {
  ValidationError,
  NotFoundError,
  ConflictError,
} 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 updateUser(userId: string, data: {
  username?: string
  avatar?: string | null
  hpDelta?: number
  xpDelta?: number
  score?: number
  level?: number
  role?: string
}) {
  try {
    await checkAdminAccess()()

    // Valider username si fourni
    if (data.username !== undefined) {
      try {
        await userService.validateAndUpdateUserProfile(userId, { username: data.username })
      } catch (error) {
        if (error instanceof ValidationError || error instanceof ConflictError) {
          return { success: false, error: error.message }
        }
        throw error
      }
    }

    // Mettre à jour stats et profil
    const updatedUser = await userStatsService.updateUserStatsAndProfile(
      userId,
      {
        username: data.username,
        avatar: data.avatar,
        hpDelta: data.hpDelta,
        xpDelta: data.xpDelta,
        score: data.score,
        level: data.level,
        role: data.role ? (data.role as Role) : undefined,
      },
      {
        id: true,
        username: true,
        email: true,
        role: true,
        score: true,
        level: true,
        hp: true,
        maxHp: true,
        xp: true,
        maxXp: true,
        avatar: true,
      }
    )

    revalidatePath('/admin')
    revalidatePath('/leaderboard')

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

    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\'utilisateur' }
  }
}

export async function deleteUser(userId: string) {
  try {
    const session = await checkAdminAccess()()

    await userService.validateAndDeleteUser(userId, session.user.id)

    revalidatePath('/admin')
    revalidatePath('/leaderboard')

    return { success: true }
  } catch (error) {
    console.error('Error deleting user:', 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 suppression de l\'utilisateur' }
  }
}