import {z} from 'zod'

export type GetApiV1VerificationGstinliteArgs = {gstin_number: string};

export type GetApiV1VerificationGstinliteOptions = {baseUrl: string, Oauth2ClientCredentials?: string | undefined, fetch?: typeof fetch | undefined};

export const gstibAddressObject = z.object({bnm: z.string().optional(), st: z.string().optional(), loc: z.string().optional(), bno: z.string().optional(), stcd: z.string().optional(), dst: z.string().optional(), city: z.string().optional(), flno: z.string().optional(), lt: z.string().optional(), pncd: z.string().optional(), lg: z.string().optional(), landMark: z.string().optional(), locality: z.string().optional(), geocodelvl: z.string().optional(), full_address: z.string().optional()});

export const gstRegAddress = z.object({addr: gstibAddressObject, ntr: z.string().optional()});

export const gstinVerificationData = z.object({stjCd: z.string().optional(), dty: z.string().optional(), stj: z.string().optional(), lgnm: z.string().optional(), adadr: z.array(gstRegAddress), cxdt: z.string().optional(), gstin: z.string(), nba: z.array(z.string()), lstupdt: z.string().optional(), ctb: z.string().optional(), rgdt: z.string().optional(), pradr: gstRegAddress, ctjCd: z.string().optional(), sts: z.string().optional(), tradeNam: z.string().optional(), ctj: z.string().optional(), einvoiceStatus: z.string().optional()});

export const rESPONSEGSTINVERIFICATIONSUCCESSFUL = z.object({data: gstinVerificationData, code: z.number().int(), timestamp: z.number().int(), transaction_id: z.string()});

export const searchGstinNoRecordsFound = z.object({error_code: z.string().optional(), message: z.string().optional()});

export const rESPONSEGSTINNORECORDSFOUND = z.object({code: z.number().int(), timestamp: z.number().int(), transaction_id: z.string(), data: searchGstinNoRecordsFound});

export const searchGstinInvalid = z.object({error_code: z.string().optional(), message: z.string().optional()});

export const rESPONSEGSTININVALID = z.object({code: z.number().int(), timestamp: z.number().int(), transaction_id: z.string(), data: searchGstinInvalid});

export const getApiV1VerificationGstinliteResponse = z.union([rESPONSEGSTINVERIFICATIONSUCCESSFUL, rESPONSEGSTINNORECORDSFOUND, rESPONSEGSTININVALID]);

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
};

/**
 * Gstin Basic Verification
 * 
 * GET /v1/verification/gstinlite
 */
export const getApiV1VerificationGstinlite = async (args: GetApiV1VerificationGstinliteArgs, options: GetApiV1VerificationGstinliteOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Oauth2ClientCredentials} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/verification/gstinlite${query.size > 0 ? `?${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(getApiV1VerificationGstinliteResponse, await res.json())
};