# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

swagger: '2.0'
info:
  title: "Matrix Federation Events API"
  version: "1.0.0"
host: localhost:8448
schemes:
  - https
basePath: /_matrix/federation/v1
produces:
  - application/json
securityDefinitions:
  $ref: definitions/security.yaml
paths:
  "/state/{roomId}":
    get:
      summary: Get all the state of a given room
      description: |-
        Retrieves a snapshot of a room's state at a given event.
      operationId: getRoomState
      security:
        - signedRequest: []
      parameters:
        - in: path
          name: roomId
          type: string
          description: The room ID to get state for.
          required: true
          x-example: "!abc123:matrix.org"
        - in: query
          name: event_id
          type: string
          description: An event ID in the room to retrieve the state at.
          required: true
          x-example: "$helloworld:matrix.org"
      responses:
        200:
          description: |-
            The fully resolved state for the room, prior to considering any state
            changes induced by the requested event. Includes the authorization
            chain for the events.
          schema:
            type: object
            properties:
              auth_chain:
                type: array
                description: |-
                  The full set of authorization events that make up the state
                  of the room, and their authorization events, recursively. Note that
                  events have a different format depending on the room version -
                  check the [room version specification](/rooms) for precise event formats.
                items:
                  type: object
                  title: PDU
                  description: |-
                    The [PDUs](/server-server-api/#pdus) contained in the auth chain. The event format
                    varies depending on the room version - check the [room version specification](/rooms)
                    for precise event formats.
                  properties: []
                  example:
                    $ref: "examples/minimal_pdu.json"
              pdus:
                type: array
                description: |-
                  The fully resolved state of the room at the given event. Note that
                  events have a different format depending on the room version -
                  check the [room version specification](/rooms) for precise event formats.
                items:
                  type: object
                  title: PDU
                  description: |-
                    The [PDUs](/server-server-api/#pdus) for the fully resolved state of the room. The event format
                    varies depending on the room version - check the [room version specification](/rooms)
                    for precise event formats.
                  properties: []
                  example:
                    $ref: "examples/minimal_pdu.json"
            required: ['auth_chain', 'pdus']
  "/state_ids/{roomId}":
    get:
      summary: Get all the state event IDs of a given room
      description: |-
        Retrieves a snapshot of a room's state at a given event, in the form of
        event IDs. This performs the same function as calling `/state/{roomId}`,
        however this returns just the event IDs rather than the full events.
      operationId: getRoomStateIds
      security:
        - signedRequest: []
      parameters:
        - in: path
          name: roomId
          type: string
          description: The room ID to get state for.
          required: true
          x-example: "!abc123:matrix.org"
        - in: query
          name: event_id
          type: string
          description: An event ID in the room to retrieve the state at.
          required: true
          x-example: "$helloworld:matrix.org"
      responses:
        200:
          description: |-
            The fully resolved state for the room, prior to considering any state
            changes induced by the requested event. Includes the authorization
            chain for the events.
          schema:
            type: object
            properties:
              auth_chain_ids:
                type: array
                description: |-
                  The full set of authorization events that make up the state
                  of the room, and their authorization events, recursively.
                items:
                  type: string
                example: ["$an_event:example.org"]
              pdu_ids:
                type: array
                description: |-
                  The fully resolved state of the room at the given event.
                items:
                  type: string
                example: ["$an_event:example.org"]
            required: ['auth_chain_ids', 'pdu_ids']
  "/event/{eventId}":
    get:
      summary: Get a single event
      description: |-
        Retrieves a single event.
      operationId: getEvent
      security:
        - signedRequest: []
      parameters:
        - in: path
          name: eventId
          type: string
          description: The event ID to get.
          required: true
          x-example: "$abc123:matrix.org"
      responses:
        200:
          description: A transaction containing a single PDU which is the event requested.
          schema:
            $ref: "definitions/single_pdu_transaction.yaml"
