/**
 * CSV dışa / içe aktarma. İçe aktarma iki adım: deneme (`commit: false`) → onay (`true`).
 * Aktarımdan sonra dönem, rapor ve birikim verileri yenilenir.
 */
import { useMutation, useQueryClient } from '@tanstack/react-query'
import type { ImportReport } from '@/types/ImportReport'
import { api } from './api'
import { queryKeys } from './query'

export const TRANSFER_KINDS = ['entries', 'plan-items', 'asset-transactions'] as const
export type TransferKind = (typeof TRANSFER_KINDS)[number]

/** İndirme adresi (çerezle; tarayıcı dosya olarak kaydeder) */
export const exportUrl = (kind: TransferKind) => `/api/export/${kind}.csv`

export function useImport() {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: ({ kind, csv, commit }: { kind: TransferKind; csv: string; commit: boolean }) =>
      api.postCsv<ImportReport>(`/import/${kind}?commit=${commit}`, csv),
    onSuccess: (_, v) => {
      if (!v.commit) return
      void Promise.all([
        qc.invalidateQueries({ queryKey: queryKeys.periods }),
        qc.invalidateQueries({ queryKey: ['period'] }),
        qc.invalidateQueries({ queryKey: queryKeys.portfolio }),
        qc.invalidateQueries({ queryKey: queryKeys.reports }),
      ])
    },
  })
}