import {z} from 'zod'

export type GetApiV1GstTaxPayerLedgersItcArgs = {gstin_number: string, from_date: string, to_date: string};

export type GetApiV1GstTaxPayerLedgersItcOptions = {baseUrl: string, Oauth2ClientCredentials?: string | undefined, fetch?: typeof fetch | undefined};

export const igstBalObject = z.object({intr: z.number().int(), oth: z.number().int(), tx: z.number().int(), fee: z.number().int(), pen: z.number().int(), tot: z.number().int()});

export const sgstBalObject = z.object({intr: z.number().int(), oth: z.number().int(), tx: z.number().int(), fee: z.number().int(), pen: z.number().int(), tot: z.number().int()});

export const cessBalObject = z.object({intr: z.number().int(), oth: z.number().int(), tx: z.number().int(), fee: z.number().int(), pen: z.number().int(), tot: z.number().int()});

export const cgstBalObject = z.object({intr: z.number().int(), oth: z.number().int(), tx: z.number().int(), fee: z.number().int(), pen: z.number().int(), tot: z.number().int()});

export const clBalObject = z.object({igstbal: igstBalObject, sgstbal: sgstBalObject, cessbal: cessBalObject, tot_rng_bal: z.number().int(), cgstbal: cgstBalObject, desc: z.string()});

export const itcClTrObject = z.object({sgst: sgstBalObject, ref_no: z.string(), sgstbal: sgstBalObject, cessbal: cessBalObject, cgst: cgstBalObject, cess: cessBalObject, tot_rng_bal: z.number().int(), igst: igstBalObject, tr_typ: z.string(), dt: z.string(), igstbal: igstBalObject, tot_tr_amt: z.number().int(), dschrg_typ: z.string(), cgstbal: cgstBalObject, desc: z.string()});

export const itcLedgerData = z.object({ret_period: z.string(), cl_bal: clBalObject, gstin: z.string(), tr: z.array(itcClTrObject)});

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

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

export const getApiV1GstTaxPayerLedgersItcResponse = z.union([rESPONSEITCLEDGERSUCCESSFUL, rESPONSEGSTAUTHENTICATIONFAILED]);

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
};

/**
 * Itc Ledger
 * 
 * GET /v1/gst/tax-payer/ledgers/itc
 */
export const getApiV1GstTaxPayerLedgersItc = async (args: GetApiV1GstTaxPayerLedgersItcArgs, options: GetApiV1GstTaxPayerLedgersItcOptions) => {
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 (args.from_date != null) query.append("from_date", String(args.from_date))
if (args.to_date != null) query.append("to_date", String(args.to_date))
if (Oauth2ClientCredentials !== undefined) headers.set('authorization', `Bearer ${Oauth2ClientCredentials}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/gst/tax-payer/ledgers/itc${query.size > 0 ? `?${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(getApiV1GstTaxPayerLedgersItcResponse, await res.json())
};