import {z} from 'zod'

export type GetApiV1VerificationTaxPayerTds206AbArgs = {pan_number: string};

export type GetApiV1VerificationTaxPayerTds206AbOptions = {baseUrl: string, Oauth2ClientCredentials?: string | undefined, fetch?: typeof fetch | undefined};

export const tdsComplianceCheckData = z.object({pan_number: z.string().optional(), compliant: z.boolean().optional(), pan_allotment_date: z.string().optional(), masked_name: z.string().optional(), pan_aadhaar_linked: z.string().optional(), specified_person_under_206: z.string().optional(), pan_status: z.string().optional(), valid_pan: z.string().optional()});

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

/**
 * Tds Compliance Check
 * 
 * GET /v1/verification/tax-payer/tds/206-ab
 */
export const getApiV1VerificationTaxPayerTds206Ab = async (args: GetApiV1VerificationTaxPayerTds206AbArgs, options: GetApiV1VerificationTaxPayerTds206AbOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Oauth2ClientCredentials} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/verification/tax-payer/tds/206-ab${query.size > 0 ? `?${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(rESPONSETDSCOMPLIANCECHECK, await res.json())
};