import {z} from 'zod'

export type APIClientID = string;

export type APISecret = string;

export type UserToken = string;

export type NewUserID = string;

export type CreditEmploymentGetRequest = {client_id?: APIClientID | undefined, secret?: APISecret | undefined, user_token?: UserToken | undefined, user_id?: NewUserID | undefined};

export type CreateApiCreditEmploymentGetArgs = {body: CreditEmploymentGetRequest};

export type CreateApiCreditEmploymentGetOptions = {baseUrl?: string | undefined, clientId?: string | undefined, secret?: string | undefined, plaidVersion?: string | undefined, fetch?: typeof fetch | undefined};

export const itemId = z.string();

export const creditEmploymentVerificationStatus = z.string().nullable();

export const creditEmployerVerification = z.object({name: z.string().nullable()}).and(z.record(z.string(), z.unknown()));

export const creditPlatformIds = z.object({employee_id: z.string().nullable(), payroll_id: z.string().nullable(), position_id: z.string().nullable()}).and(z.record(z.string(), z.unknown()));

export const creditEmploymentEmployeeType = z.string().nullable();

export const creditEmploymentVerification = z.object({account_id: z.string().nullable(), status: creditEmploymentVerificationStatus, start_date: z.string().nullable(), end_date: z.string().nullable(), employer: creditEmployerVerification, title: z.string().nullable(), platform_ids: creditPlatformIds, employee_type: creditEmploymentEmployeeType, last_paystub_date: z.string().nullable()}).and(z.record(z.string(), z.unknown()));

export const creditEmploymentItem = z.object({item_id: itemId, employments: z.array(creditEmploymentVerification), employment_report_token: z.string().optional()}).and(z.record(z.string(), z.unknown()));

export const requestID = z.string();

export const creditEmploymentGetResponse = z.object({items: z.array(creditEmploymentItem), request_id: requestID}).and(z.record(z.string(), z.unknown()));

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
};

/**
 * Retrieve a summary of an individual's employment information
 * 
 * POST /credit/employment/get
 */
export const createApiCreditEmploymentGet = async (args: CreateApiCreditEmploymentGetArgs, options?: CreateApiCreditEmploymentGetOptions) => {
const {baseUrl = "https://production.plaid.com", fetch: fetchFn = fetch, clientId, secret, plaidVersion} = options ?? {}

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

if (clientId !== undefined) headers.set("PLAID-CLIENT-ID", clientId)
if (secret !== undefined) headers.set("PLAID-SECRET", secret)
if (plaidVersion !== undefined) headers.set("Plaid-Version", plaidVersion)

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