import {z} from 'zod'

export type GetApiV2VerificationEpfoUanToEmploymentHistoryArgs = {uan_number: string, generate_pdf?: boolean | undefined};

export type GetApiV2VerificationEpfoUanToEmploymentHistoryOptions = {baseUrl: string, Oauth2ClientCredentials?: string | undefined, fetch?: typeof fetch | undefined};

export const employmentDetails = z.object({name: z.string().optional(), guardian_name: z.string().optional(), establishment_name: z.string().optional(), member_id: z.string().optional(), date_of_joining: z.string().optional(), date_of_exit: z.string().optional(), last_pf_submitted: z.string().optional()});

export const employmentHistory = z.object({pdf_url: z.string().optional(), employment_history: z.array(employmentDetails).optional()});

export const rESPONSEUANTOEMPLOYMENTHISTORYSUCCESS = z.object({code: z.number().int().optional(), timestamp: z.number().int(), transaction_id: z.string(), sub_code: z.string().optional(), message: z.string().optional(), data: employmentHistory});

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
};

/**
 * Uan To Employment History Cashfree
 * 
 * GET /v2/verification/epfo/uan-to-employment-history
 */
export const getApiV2VerificationEpfoUanToEmploymentHistory = async (args: GetApiV2VerificationEpfoUanToEmploymentHistoryArgs, options: GetApiV2VerificationEpfoUanToEmploymentHistoryOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Oauth2ClientCredentials} = options ?? {}

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

if (args.uan_number != null) query.append("uan_number", String(args.uan_number))
if (args.generate_pdf != null) query.append("generate_pdf", String(args.generate_pdf))
if (Oauth2ClientCredentials !== undefined) headers.set('authorization', `Bearer ${Oauth2ClientCredentials}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/verification/epfo/uan-to-employment-history${query.size > 0 ? `?${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(rESPONSEUANTOEMPLOYMENTHISTORYSUCCESS, await res.json())
};