import {z} from 'zod'

export type GetApiUserFollowingArgs = {page?: number | undefined, limit?: number | undefined};

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

export const user = z.object({active: z.boolean().optional(), avatar_url: z.string().optional(), created: z.string().optional(), description: z.string().optional(), email: z.string().optional(), followers_count: z.number().int().optional(), following_count: z.number().int().optional(), full_name: z.string().optional(), html_url: z.string().optional(), id: z.number().int().optional(), is_admin: z.boolean().optional(), language: z.string().optional(), last_login: z.string().optional(), location: z.string().optional(), login: z.string().optional(), login_name: z.string().optional(), prohibit_login: z.boolean().optional(), restricted: z.boolean().optional(), source_id: z.number().int().optional(), starred_repos_count: z.number().int().optional(), type: z.enum(["User", "Organization", "Bot"]).optional(), visibility: z.enum(["public", "limited", "private"]).optional(), website: z.string().optional()});

export const getApiUserFollowingResponse = z.array(user);

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
};

/**
 * List the users that the authenticated user is following
 * 
 * GET /user/following
 * 
 * Also accepts auth: Token, AccessToken, AuthorizationHeaderToken, SudoParam, SudoHeader, TOTPHeader
 */
export const getApiUserFollowing = async (args: GetApiUserFollowingArgs, options: GetApiUserFollowingOptions) => {
const {baseUrl, fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.limit != null) query.append("limit", String(args.limit))
if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

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