import { useCancelPromotion, useNadal, usePromotion } from '#lib/composables'
import type { GetFastPayRequest, SenpayResponse } from '#lib/types'
import { valueToNumber } from '#lib/utils'
import { ref } from 'vue'

/**
 * Provides methods and state related to Senpay transactions, including fetching promotion packages and requesting transfer information.
 * @returns {Object} An object containing state and methods for managing Senpay transactions.
 * @namespace
 */
export function useSenpay() {
  const { payment } = useNadal()
  const { isUsingPromotion, promotionPackages, fetchPromotionPackages } =
    usePromotion()
  const { openModalCancelPromotion } = useCancelPromotion()
  const isLoading = ref(false)

  /**
   * Requests transfer information for a Senpay transaction.
   * @async
   * @param {GetFastPayRequest} data - The request data for the Senpay transaction.
   * @returns {Promise<SenpayResponse>} A promise that resolves to the response from the Senpay transaction request.
   */

  const fetchTransferInfo = async (
    data: GetFastPayRequest,
  ): Promise<SenpayResponse | undefined> => {
    if (isUsingPromotion.value) {
      openModalCancelPromotion()
      return Promise.resolve(undefined)
    }
    const body = {
      ...data,
      amount: valueToNumber(data.amount.toString(), 1000),
    }
    return await payment.requestSenpayInvoice<
      GetFastPayRequest,
      SenpayResponse
    >(body)
  }

  /**
   * Fetches promotion packages and manages the loading state.
   * @returns {Promise<void>} A promise that resolves when the promotion packages have been fetched.
   */
  const fetchData = async (): Promise<void> => {
    isLoading.value = true
    return fetchPromotionPackages().finally(() => {
      isLoading.value = false
    })
  }

  return {
    isLoading,
    promotionPackages,
    fetchTransferInfo,
    fetchData,
  }
}