openapi: 3.0.0
info:
  version: 0.7.0
  title: WMF Node.JS Service Template
  description: A template for creating Node.JS services
  termsOfService: https://wikimediafoundation.org/wiki/Terms_of_Use
  contact:
    name: the Wikimedia Services team
    url: http://mediawiki.org/wiki/Services
  license:
    name: Apache2
    url: http://www.apache.org/licenses/LICENSE-2.0
x-default-params:
  domain: en.wikipedia.org

paths:
  # from routes/root.js
  /robots.txt:
    get:
      tags:
        - Root
        - Robots
      description: Gets robots.txt
      responses:
        200:
          description: Success
        default:
          description: Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: robots.txt check
          request: {}
          response:
            status: 200
  /:
    get:
      tags:
        - Root
      description: The root service end-point
      responses:
        200:
          description: Success
        default:
          description: Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: root with no query params
          request: {}
          response:
            status: 404
        - title: spec from root
          request:
            query:
              spec: true
          response:
            status: 200
        - title: doc from root
          request:
            query:
              doc: true
          response:
            status: 200
        - title: root with wrong query param
          request:
            query:
              fooo: true
          response:
            status: 404
  # from routes/v1.js
  /{domain}/v1/siteinfo:
    get:
      tags:
        - Site info
        - MW API call
        - Example
      description: Calls the MW API siteinfo action and returns the response
      parameters:
        - $ref: '#/components/parameters/domain'
      responses:
        200:
          description: Success
        404:
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
        504:
          description: Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: site info for default domain
          request: {}
          response:
            status: 200
            headers:
              content-type: application/json
        - title: site info for a non-existent domain
          request:
            params:
              domain: my.fake.domain
          response:
            status: 504
            headers:
              content-type: application/json
  /{domain}/v1/siteinfo/{prop}:
    get:
      tags:
        - Site info
        - MW API call
        - Example
      description: Calls the MW API siteinfo action and returns the response
      parameters:
        - $ref: '#/components/parameters/domain'
        - $ref: '#/components/parameters/prop'
      responses:
        200:
          description: Success
        404:
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
        504:
          description: Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: site info for default domain
          request: {}
          response:
            status: 200
            headers:
              content-type: application/json
        - title: site info for a non-existent domain
          request:
            params:
              domain: my.fake.domain
          response:
            status: 504
            headers:
              content-type: application/json
        - title: site info check for valid prop
          request:
            params:
              prop: sitename
          response:
            status: 200
            headers:
              content-type: application/json
            body:
              sitename: Wikipedia
        - title: site info check for invalid prop
          request:
            params:
              prop: blaprop
          response:
            status: 404
            headers:
              content-type: application/json
  /{domain}/v1/page/{title}:
    get:
      tags:
        - Page content
        - Example
      description: Gets the HTML for the page with the given title
      parameters:
        - $ref: '#/components/parameters/domain'
        - $ref: '#/components/parameters/title'
      responses:
        200:
          description: OK
        404:
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: get the Foobar page from en.wp.org
          request:
            params:
              title: Foobar
          response:
            status: 200
            headers:
              content-type: text/html
  /{domain}/v1/page/{title}/lead:
    get:
      tags:
        - Page content
        - Lead section
        - Example
      description: Gets the lead-section HTML for the page with the given title
      parameters:
        - $ref: '#/components/parameters/domain'
        - $ref: '#/components/parameters/title'
      responses:
        200:
          description: OK
        404:
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
        default:
          description: Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: get the lead section for Barack Obama
          request:
            params:
              title: Barack Obama
          response:
            status: 200
            headers:
              content-type: text/html
  # from routes/info.js
  /_info:
    get:
      tags:
        - Service information
      description: Gets information about the service
      responses:
        200:
          description: OK
      x-amples:
        - title: retrieve service info
          request: {}
          response:
            status: 200
            headers:
              content-type: application/json
            body:
              name: /.+/
              description: /.+/
              version: /.+/
              home: /.+/
  /_info/name:
    get:
      tags:
        - Service information
        - Service name
      description: Gets the name of the service
      responses:
        200:
          description: OK
      x-amples:
        - title: retrieve service name
          request: {}
          response:
            status: 200
            headers:
              content-type: application/json
            body:
              name: /.+/
  /_info/version:
    get:
      tags:
        - Service information
        - Service version
      description: Gets the running version of the service
      responses:
        200:
          description: OK
      x-amples:
        - title: retrieve service version
          request: {}
          response:
            status: 200
            headers:
              content-type: application/json
            body:
              version: /.+/
  /_info/home:
    get:
      tags:
        - Service information
        - Service homepage
      description: Redirects to the home page
      responses:
        301:
          description: Redirect
      x-amples:
        - title: redirect to the home page
          request: {}
          response:
            status: 301
  # from routes/ex.js
  /ex/err/array:
    get:
      tags:
        - Example
        - Error
        - Internal error
      description: Generates an internal error due to a wrong array declaration
      responses:
        500:
          description: Internal Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: wrong array declaration example
          request: {}
          response:
            status: 500
            headers:
              content-type: application/json
  /ex/err/file:
    get:
      tags:
        - Example
        - Error
        - Internal error
      description: Generates an internal error due to a non-existing file
      responses:
        500:
          description: Internal Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: non-existing file example
          request: {}
          response:
            status: 500
            headers:
              content-type: application/json
  /ex/err/manual/error:
    get:
      tags:
        - Example
        - Error
        - Internal error
      description: Generates an internal error due to a user-thrown error
      responses:
        500:
          description: Internal Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: user error example
          request: {}
          response:
            status: 500
            headers:
              content-type: application/json
  /ex/err/manual/deny:
    get:
      tags:
        - Example
        - Error
        - Access denied
      description: Generates an access-denied error
      responses:
        403:
          description: Access Denied
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: access denied error example
          request: {}
          response:
            status: 403
            headers:
              content-type: application/json
  /ex/err/manual/auth:
    get:
      tags:
        - Example
        - Error
        - Unauthorised access
      description: Generates an unauthorised error
      responses:
        401:
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/problem'
      x-amples:
        - title: unauthorised error example
          request: {}
          response:
            status: 401
            headers:
              content-type: application/json
  /ex/req/uri/{uri}:
    get:
      tags:
        - Example
        - Request issuing
      description: Issues a request to the given URI
      responses:
        200:
          description: OK
      x-amples:
        - title: Get example home page
          request:
            params:
              uri: 'http://www.example.com'

components:
  schemas:
    # A https://tools.ietf.org/html/draft-nottingham-http-problem
    problem:
      required:
        - type
      properties:
        status:
          type: integer
        type:
          type: string
        title:
          type: string
        detail:
          type: string
        method:
          type: string
        uri:
          type: string
  parameters:
    domain:
      in: path
      name: domain
      required: true
      schema:
        type: string
      description: |
        Project domain for the requested data.
    title:
      in: path
      name: title
      required: true
      schema:
        type: string
      description: |
        Page title. Use underscores instead of spaces. Example: `Main_Page`
    prop:
      in: path
      name: prop
      required: true
      schema:
        type: string
      description: |
        Site info prop.