import {z} from 'zod'

export type GetApiLdapUsersSearchArgs = {'X-Request-Id'?: string | undefined, username?: string | undefined};

export type GetApiLdapUsersSearchOptions = {baseUrl?: string | undefined, basic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const ldapUser = z.object({username: z.string().optional(), realname: z.string().optional(), email: z.string().optional()});

export const getApiLdapUsersSearchResponse = z.array(ldapUser);

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
};

/**
 * Search available ldap users.
 * 
 * GET /ldap/users/search
 */
export const getApiLdapUsersSearch = async (args: GetApiLdapUsersSearchArgs, options?: GetApiLdapUsersSearchOptions) => {
const {baseUrl = "http://localhost/api/v2.0", fetch: fetchFn = fetch, basic} = options ?? {}

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

if (args['X-Request-Id'] != null) headers.set("X-Request-Id", String(args['X-Request-Id']))
if (args.username != null) query.append("username", String(args.username))
if (basic !== undefined) headers.set('authorization', `Basic ${btoa(`${basic.username}:${basic.password}`)}`)

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