import {z} from 'zod'

export type GetApiMerchantsMerchantIdCustomersCustomerIdContractsArgs = {Authorization: unknown, Accept: string, 'Content-Type': string, merchant_id: string, customer_id: string};

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

export const contract = z.object({customer_id: z.string().optional(), bill_amount: z.string().optional(), status: z.enum(["enabled", "disabled", "completed"]).optional(), start_date: z.string().optional(), end_date: z.string().optional(), schedule: z.string().optional(), num_left: z.string().optional()});

export const version = z.string();

export const getApiMerchantsMerchantIdCustomersCustomerIdContractsResponse = z.object({contracts: z.array(contract).optional(), v: version.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 the contract for a Merchant's Customer
 * 
 * GET /merchants/{merchant_id}/customers/{customer_id}/contracts
 */
export const getApiMerchantsMerchantIdCustomersCustomerIdContracts = async (args: GetApiMerchantsMerchantIdCustomersCustomerIdContractsArgs, options?: GetApiMerchantsMerchantIdCustomersCustomerIdContractsOptions) => {
const {baseUrl = "https://tb.paymentfusion.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args.Accept != null) headers.set("Accept", String(args.Accept))
if (args['Content-Type'] != null) headers.set("Content-Type", String(args['Content-Type']))

const url = `${baseUrl.replace(/\/+$/, '')}/merchants/${encodeURIComponent(String(args.merchant_id))}/customers/${encodeURIComponent(String(args.customer_id))}/contracts${query.size > 0 ? `?${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(getApiMerchantsMerchantIdCustomersCustomerIdContractsResponse, await res.json())
};