import {z} from 'zod'

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

export const partnerContractBillingType = z.union([z.literal(1), z.literal(2)]);

export const partnerCustomerContractCurrency = z.union([z.literal(0), z.literal(1)]);

export const partnerCustomerListItemModel = z.object({Id: z.number().int().optional(), CustomerUserId: z.string().nullable().optional(), Email: z.string().nullable().optional(), CompanyName: z.string().nullable().optional(), ContractBillingType: partnerContractBillingType.nullable().optional(), ContractValue: z.number().nullable().optional(), Currency: partnerCustomerContractCurrency.nullable().optional(), ContractStartDate: z.string().nullable().optional(), ContractEndDate: z.string().nullable().optional()});

export const getApiPartnerCustomersResponse = z.array(partnerCustomerListItemModel);

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
};

/**
 * List Customers
 * 
 * GET /partner/customers
 * 
 * Also accepts auth: bearer
 */
export const getApiPartnerCustomers = async (options?: GetApiPartnerCustomersOptions) => {
const {baseUrl = "https://api.bunny.net", fetch: fetchFn = fetch, AccessKey} = options ?? {}

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

if (AccessKey !== undefined) headers.set("AccessKey", AccessKey)

const url = `${baseUrl.replace(/\/+$/, '')}/partner/customers${query.size > 0 ? `?${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(getApiPartnerCustomersResponse, await res.json())
};