import {z} from 'zod'

export type GetApiStratumMethodsSmCodeArgs = {sm_code: string, with_nested?: boolean | undefined, create_parquet?: boolean | undefined};

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

export const stratumMethodFull = z.object({count: z.number().int().optional(), data: z.array(z.object({sm_code: z.string().optional(), stratum_method_name: z.string().optional(), stratum_method_description: z.string().optional(), stratum_assignment: z.string().optional(), rf_code: z.string().optional(), rf_label: z.string().optional()})).optional()});

export const stratumMethodFullNested = z.object({count: z.number().int().optional(), data: z.array(z.object({sm_code: z.string().optional(), stratum_method_name: z.string().optional(), stratum_method_description: z.string().optional(), stratum_assignment: z.string().optional(), rf_code: z.string().optional(), rf_label: z.string().optional(), stratum_types: z.array(z.object({sy_code: z.string().optional(), stratum_index: z.string().optional(), stratum_name: z.string().optional(), stratum_description: z.string().optional()})).optional()})).optional()});

export const getApiStratumMethodsSmCodeResponse = z.union([stratumMethodFull, stratumMethodFullNested]);

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
};

/**
 * Get stratum method
 * 
 * GET /stratum-methods/{sm_code}
 */
export const getApiStratumMethodsSmCode = async (args: GetApiStratumMethodsSmCodeArgs, options?: GetApiStratumMethodsSmCodeOptions) => {
const {baseUrl = "https://api.vegbank.org", fetch: fetchFn = fetch} = options ?? {}

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

if (args.with_nested != null) query.append("with_nested", String(args.with_nested))
if (args.create_parquet != null) query.append("create_parquet", String(args.create_parquet))

const url = `${baseUrl.replace(/\/+$/, '')}/stratum-methods/${encodeURIComponent(String(args.sm_code))}${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(getApiStratumMethodsSmCodeResponse, await res.json())
};