get:
  tags:
    - topics
  summary: Get external topics
  description: Returns a list of external topics known to the local instance
  parameters:
    - name: filter
      in: path
      required: true
      schema:
        type: string
      example: all
  responses:
    "200":
      description: An array of topic objects sorted by timestamp.
      content:
        application/json:
          schema:
            allOf:
              - $ref: ../components/schemas/CategoryObject.yaml#/CategoryObject
              - type: object
                properties:
                  tagWhitelist:
                    type: array
                    items:
                      type: string
                  posts:
                    allOf:
                      - $ref: ../components/schemas/PostsObject.yaml#/PostsObject
                      - type: object
                        properties:
                          bookmarks:
                            type: number
                  selectedCategory:
                    $ref: ../components/schemas/CategoryObject.yaml#/CategoryObject
                    nullable: true
                  showThumbs:
                    type: boolean
                  showTopicTools:
                    type: boolean
                  showSelect:
                    type: boolean
                  isWatched:
                    type: boolean
                  isTracked:
                    type: boolean
                  isNotWatched:
                    type: boolean
                  isIgnored:
                    type: boolean
                  hasFollowers:
                    type: boolean
                    nullable: true
                  privileges:
                    type: object
                    properties:
                      topics:create:
                        type: boolean
                      topics:read:
                        type: boolean
                      topics:schedule:
                        type: boolean
                      topics:tag:
                        type: boolean
                      read:
                        type: boolean
                      posts:view_deleted:
                        type: boolean
                      cid:
                        type: string
                        example: '-1'
                      uid:
                        type: number
                        description: A user identifier
                      editable:
                        type: boolean
                      view_deleted:
                        type: boolean
                      isAdminOrMod:
                        type: boolean
                  title:
                    type: string
                  topicCount:
                    type: number
                  categories:
                    type: array
                    items:
                      $ref: ../components/schemas/CategoryObject.yaml#/CategoryObject
              - $ref: ../components/schemas/Pagination.yaml#/Pagination
              - $ref: ../components/schemas/Breadcrumbs.yaml#/Breadcrumbs
              - $ref: ../components/schemas/CommonProps.yaml#/CommonProps