import {z} from 'zod'

export type GetApiUiapiV2OrgaoMediaAnoArgs = {ano: number};

export type GetApiUiapiV2OrgaoMediaAnoOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const uiapiPerCapitaData = z.object({descontos: z.number().optional(), outras_remuneracoes: z.number().optional(), remuneracao_base: z.number().optional(), remuneracoes: z.number().optional()});

export const uiapiAveragePerAgency = z.object({id_orgao: z.string().optional(), media_por_membro: uiapiPerCapitaData.optional()});

export const getApiUiapiV2OrgaoMediaAnoResponse = z.array(uiapiAveragePerAgency);

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
};

/**
 * Busca médias (remuneração base, outras remunerações, descontos e remuneração total) de cada órgão em um ano especificado.
 * 
 * GET /uiapi/v2/orgao/media/{ano}
 */
export const getApiUiapiV2OrgaoMediaAno = async (args: GetApiUiapiV2OrgaoMediaAnoArgs, options: GetApiUiapiV2OrgaoMediaAnoOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/uiapi/v2/orgao/media/${encodeURIComponent(String(args.ano))}${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(getApiUiapiV2OrgaoMediaAnoResponse, await res.json())
};