import {z} from 'zod'

export type UserOptionalFields = 'None' | 'KnownLanguages' | 'MainPicture' | 'OldUsernames';

export type GetApiApiUsersCurrentArgs = {fields?: UserOptionalFields | undefined};

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

export const userGroupId = z.enum(["Nothing", "Limited", "Regular", "Trusted", "Moderator", "Admin"]);

export const userLanguageProficiency = z.enum(["Nothing", "Basics", "Intermediate", "Advanced", "Native"]);

export const userKnownLanguageContract = z.object({cultureCode: z.string().nullable().optional(), proficiency: userLanguageProficiency.optional()});

export const entryThumbForApiContract = z.object({mime: z.string().nullable().optional(), name: z.string().nullable().optional(), urlOriginal: z.string().nullable().optional(), urlSmallThumb: z.string().nullable().optional(), urlThumb: z.string().nullable().optional(), urlTinyThumb: z.string().nullable().optional()});

export const oldUsernameContract = z.object({date: z.string().optional(), oldName: z.string().nullable().optional()});

export const userForApiContract = z.object({active: z.boolean().optional(), groupId: userGroupId.optional(), knownLanguages: z.array(userKnownLanguageContract).nullable().optional(), mainPicture: entryThumbForApiContract.optional(), memberSince: z.string().optional(), oldUsernames: z.array(oldUsernameContract).nullable().optional(), verifiedArtist: z.boolean().optional(), id: z.number().int().optional(), name: z.string().nullable().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
};

/**
 * GET /api/users/current
 */
export const getApiApiUsersCurrent = async (args: GetApiApiUsersCurrentArgs, options: GetApiApiUsersCurrentOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

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

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