import {z} from 'zod'

export type GetApiCustomFieldsArgs = {limit?: number | undefined, starting_after?: string | undefined, sort_order?: ('asc' | 'desc') | undefined, start_date?: string | undefined, end_date?: string | undefined, key?: string | undefined, object_type?: (Array<'payment_order' | 'expected_payment' | 'transaction' | 'direct_debit_mandate' | 'internal_account' | 'external_account' | 'connected_account'>) | undefined, type?: ('select' | 'text') | undefined};

export type GetApiCustomFieldsOptions = {baseUrl?: string | undefined, sec0?: string | undefined, fetch?: typeof fetch | undefined};

export const customFieldValuesCreation = z.object({key: z.string(), name: z.string()});

export const customFieldDetails = z.object({key: z.string(), name: z.string(), type: z.enum(["select", "text"]), object_types: z.array(z.enum(["payment_order", "expected_payment", "transaction", "direct_debit_mandate", "internal_account", "external_account", "connected_account"])), values: z.array(customFieldValuesCreation), created_at: z.string()});

export const customFieldSearchResult = z.object({records: z.array(customFieldDetails).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
};

/**
 * List custom fields
 * 
 * GET /custom_fields
 */
export const getApiCustomFields = async (args: GetApiCustomFieldsArgs, options?: GetApiCustomFieldsOptions) => {
const {baseUrl = "https://sandbox.numeral.io/v1", fetch: fetchFn = fetch, sec0} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.starting_after != null) query.append("starting_after", String(args.starting_after))
if (args.sort_order != null) query.append("sort_order", String(args.sort_order))
if (args.start_date != null) query.append("start_date", String(args.start_date))
if (args.end_date != null) query.append("end_date", String(args.end_date))
if (args.key != null) query.append("key", String(args.key))
for (const item of args.object_type ?? []) query.append("object_type", String(item))
if (args.type != null) query.append("type", String(args.type))
if (sec0 !== undefined) headers.set("x-api-key", sec0)

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