'use server'

import { revalidatePath } from 'next/cache'
import { z } from 'zod'
import { requireUser } from '@/lib/auth/current'
import { AccessError } from '@/lib/errors'
import { createDepartment, updateDepartment } from '@/lib/departments/service'
import { de } from '@/lib/i18n/de'

export type ActionResult = { ok: true } | { ok: false; error: string }

function toMessage(error: unknown): string {
  if (error instanceof AccessError) {
    return de.actionErrors[error.code] ?? de.actionErrors.default!
  }
  console.error('[abteilungen] unerwartet', error)
  return de.actionErrors.default!
}

const createSchema = z.object({
  key: z.string().min(1).max(21),
  name: z.string().min(1).max(120),
  description: z.string().max(500).optional(),
  minClearance: z.coerce.number().int().min(0).max(5),
})

export async function createDepartmentAction(
  _prev: ActionResult | null,
  formData: FormData,
): Promise<ActionResult> {
  const user = await requireUser()
  const parsed = createSchema.safeParse(Object.fromEntries(formData))
  if (!parsed.success) return { ok: false, error: de.actionErrors.default! }

  try {
    await createDepartment(user.permissions, parsed.data)
    revalidatePath('/admin/abteilungen')
    revalidatePath('/abteilungen')
    return { ok: true }
  } catch (error) {
    return { ok: false, error: toMessage(error) }
  }
}

const updateSchema = z.object({
  id: z.string().min(1),
  name: z.string().min(1).max(120),
  description: z.string().max(500).optional(),
  minClearance: z.coerce.number().int().min(0).max(5),
  isArchived: z.union([z.literal('on'), z.undefined()]).transform((wert) => wert === 'on'),
})

export async function updateDepartmentAction(
  _prev: ActionResult | null,
  formData: FormData,
): Promise<ActionResult> {
  const user = await requireUser()
  const parsed = updateSchema.safeParse(Object.fromEntries(formData))
  if (!parsed.success) return { ok: false, error: de.actionErrors.default! }

  try {
    await updateDepartment(user.permissions, parsed.data)
    revalidatePath('/admin/abteilungen')
    revalidatePath('/abteilungen')
    return { ok: true }
  } catch (error) {
    return { ok: false, error: toMessage(error) }
  }
}