import {z} from 'zod'

export type PaymentV1PreviewTopupRequest = {amountMicros?: string | undefined, credits?: string | undefined, currency?: string | undefined, packageId?: string | undefined};

export type CreateApiV1ConsolePaymentTopupPreviewArgs = {body: PaymentV1PreviewTopupRequest};

export type CreateApiV1ConsolePaymentTopupPreviewOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const paymentV1PreviewTopupReply = z.object({appliedMultiplierBps: z.number().int().optional(), baseCreditedMicros: z.string().optional(), bonusCreditsApplied: z.string().optional(), creditedMicros: z.string().optional(), currency: z.string().optional(), internalCredits: z.string().optional(), matchedRuleId: z.string().optional(), payAmountMicros: z.string().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * PreviewTopup 充值预览：输入金额返回到账积分 + 阶梯赠送报价（不下单、不调支付）。
 * 
 * POST /v1/console/payment/topup/preview
 */
export const createApiV1ConsolePaymentTopupPreview = async (args: CreateApiV1ConsolePaymentTopupPreviewArgs, options: CreateApiV1ConsolePaymentTopupPreviewOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

const url = `${baseUrl.replace(/\/+$/, '')}/v1/console/payment/topup/preview${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(paymentV1PreviewTopupReply, await res.json())
};