import {z} from 'zod'

export type GetApiAliasesArgs = {aliases: string, storage?: string | undefined};

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

export const aliasFormat = z.enum(["ALPHANUMERIC_SIX_T_FOUR", "CUSTOM", "FPE_ACC_NUM_T_FOUR", "FPE_ALPHANUMERIC_ACC_NUM_T_FOUR", "FPE_SIX_T_FOUR", "FPE_SSN_T_FOUR", "FPE_T_FOUR", "GENERIC_T_FOUR", "JS", "NON_LUHN_FPE_ALPHANUMERIC", "NUM_LENGTH_PRESERVING", "PFPT", "RAW_UUID", "UUID", "VGS_FIXED_LEN_GENERIC"]).nullable();

export const aliasDto = z.object({alias: z.string().optional(), format: aliasFormat.optional()});

export const revealedData = z.object({value: z.string().optional(), classifiers: z.array(z.string()).optional(), aliases: z.array(aliasDto).optional(), created_at: z.string().nullable().optional(), storage: z.enum(["PERSISTENT", "VOLATILE"]).optional()});

export const getApiAliasesResponse = z.object({data: z.record(z.string(), revealedData).optional()});

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
};

/**
 * Reveal multiple aliases
 * 
 * GET /aliases
 */
export const getApiAliases = async (args: GetApiAliasesArgs, options?: GetApiAliasesOptions) => {
const {baseUrl = "https://sandbox.vgsapi.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

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