import {z} from 'zod'

export type GetApiTinVerificationsArgs = {limit?: number | undefined, offset?: number | undefined, q?: (string | null) | undefined};

export type GetApiTinVerificationsOptions = {baseUrl?: string | undefined, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const taskState = z.enum(["PENDING", "EXECUTING", "COMPLETED", "FAILED", "CANCELLED"]);

export const iRSTINMatchType = z.enum(["SSN", "EIN", "UNKNOWN"]);

export const v1TINVerificationResponse = z.object({id: z.string(), state: taskState, name: z.string(), tin: z.string().min(9).max(9), address: z.string().max(500).nullable().optional(), tin_matched: z.boolean().nullable().optional(), warnings: z.array(z.string()).optional(), created_at: z.string(), tin_match_type: iRSTINMatchType.nullable().optional()});

export const getApiTinVerificationsResponse = z.array(v1TINVerificationResponse);

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
};

/**
 * List Tin Verifications
 * 
 * GET /tin_verifications
 */
export const getApiTinVerifications = async (args: GetApiTinVerificationsArgs, options?: GetApiTinVerificationsOptions) => {
const {baseUrl = "https://api.baselayer.com", fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.q != null) query.append("q", String(args.q))
if (APIKeyHeader !== undefined) headers.set("X-API-Key", APIKeyHeader)

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