declare module '@/lib/utils/api-common' {
  export type UserDefineFetchStatus = 'success' | 'empty' | 'unauthenticated' | 'error'
  export type StorageBackend = 'auto' | 'yiban' | 'session'

  export interface StorageOptions {
    backend?: StorageBackend
  }

  export interface UserDefineFetchResult {
    status: UserDefineFetchStatus
    content: string
    code?: number
    message?: string
  }

  export function setUserDefine(
    lessonId: string | number,
    key: string | number,
    value: string,
    options?: StorageOptions
  ): void

  export function getUserDefineResult(
    lessonId: string | number,
    key: string | number,
    options?: StorageOptions
  ): Promise<UserDefineFetchResult>

  export function parseUserDefineContent<T>(content: string): T

  export function getUserDefine(
    lessonId: string | number,
    key: string | number,
    options?: StorageOptions
  ): Promise<string>

  export function getUsersDefine(
    lessonId: string | number,
    key: string | number
  ): Promise<string | { content?: string }[]>

  export function setCourseTimeProgress(order: number): Promise<boolean>
}