import {z} from 'zod'

export type GetApiApplicationCartPricingArgs = {applicationId?: number | undefined};

export type GetApiApplicationCartPricingOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const appStatus = z.object({applicationId: z.string().nullable().optional(), status: z.string().nullable().optional(), approvalAmount: z.number().optional(), isOkToDeliver: z.boolean().optional(), merchantCustomerId: z.string().nullable().optional()});

export const pricingDetails = z.object({appStatus: appStatus.optional(), cashPrice: z.number().optional(), costOfRental: z.number().optional(), depositAmount: z.number().optional(), depositSalesTax: z.number().optional(), effectiveLeaseBalance: z.number().optional(), estimatedTax: z.number().optional(), initialBalance: z.number().optional(), initialBalancePlusEstimatedTax: z.number().optional(), initialPaymentAmount: z.number().optional(), invoiceTotal: z.number().optional(), invoiceRemaining: z.number().optional(), depositNet: z.number().optional(), nextPaymentDate: z.string().nullable().optional(), ninetyDayBuyout: z.number().optional(), totalNumberOfPayment: z.number().int().optional(), paymentFrequency: z.string().nullable().optional(), periodicPaymentAmount: z.number().optional(), salesTaxRate: z.number().optional(), sumOfAllPayments: z.number().optional(), termInMonths: z.number().int().optional(), totalLeasePrice: z.number().optional(), totalDueAtSigning: z.number().optional(), totalRetailerDeliveryFees: z.number().optional(), totalTax: z.number().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
};

/**
 * Get pricing information
 * 
 * GET /application/cart/pricing
 */
export const getApiApplicationCartPricing = async (args: GetApiApplicationCartPricingArgs, options?: GetApiApplicationCartPricingOptions) => {
const {baseUrl = "https://capi.beta.progleasing.com/api/v1", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.applicationId != null) query.append("applicationId", String(args.applicationId))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/application/cart/pricing${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

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

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