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# Chat API
Base endpoint is: `/ocs/v2.php/apps/spreed/api/v1`
## Receive chat messages of a conversation
* Method: `GET`
* Endpoint: `/chat/{token}`
* Data:
field | type | Description
------|------|------------
`lookIntoFuture` | int | `1` Poll and wait for new message or `0` get history of a conversation
`limit` | int | Number of chat messages to receive (100 by default, 200 at most)
`lastKnownMessageId` | int | Serves as an offset for the query. The lastKnownMessageId for the next page is available in the `X-Chat-Last-Given` header.
`timeout` | int | `$lookIntoFuture = 1` only, Number of seconds to wait for new messages (30 by default, 60 at most)
`setReadMarker` | int | `1` to automatically set the read timer after fetching the messages, use `0` when your client calls `Mark chat as read` manually. (Default: `1`)
`includeLastKnown` | int | `1` to include the last known message as well (Default: `0`)
* Response:
- Status code:
+ `200 OK`
+ `304 Not Modified` When there were no older/newer messages
+ `404 Not Found` When the conversation could not be found for the participant
+ `412 Precondition Failed` When the lobby is active and the user is not a moderator
- Header:
field | type | Description
------|------|------------
`X-Chat-Last-Given` | int | Offset (lastKnownMessageId) for the next page.
- Data:
Array of messages, each message has at least:
field | type | Description
------|------|------------
`id` | int | ID of the comment
`token` | string | Conversation token
`actorType` | string | `guests` or `users`
`actorId` | string | User id of the message author
`actorDisplayName` | string | Display name of the message author
`timestamp` | int | Timestamp in seconds and UTC time zone
`systemMessage` | string | empty for normal chat message or the type of the system message (untranslated)
`messageType` | string | Currently known types are `comment`, `system` and `command`
`message` | string | Message string with placeholders (see [Rich Object String](https://github.com/nextcloud/server/issues/1706))
`messageParameters` | array | Message parameters for `message` (see [Rich Object String](https://github.com/nextcloud/server/issues/1706))
## Sending a new chat message
* Method: `POST`
* Endpoint: `/chat/{token}`
* Data:
field | type | Description
------|------|------------
`message` | string | The message the user wants to say
`actorDisplayName` | string | Guest display name (ignored for logged in users)
`replyTo` | int | The message ID this message is a reply to (only allowed for messages from the same conversation and when the message type is not `system` or `command`)
* Response:
- Header:
+ `201 Created`
+ `400 Bad Request` In case of any other error
+ `403 Forbidden` When the conversation is read-only
+ `404 Not Found` When the conversation could not be found for the participant
+ `412 Precondition Failed` When the lobby is active and the user is not a moderator
+ `413 Payload Too Large` When the message was longer than the allowed limit of 32000 characters (or 1000 until Nextcloud 16.0.1, check the `spreed => config => chat => max-length` capability for the limit)
- Data:
The full message array of the new message, as defined in [Receive chat messages of a conversation](#receive-chat-messages-of-a-conversation)
## Mark chat as read
* Method: `POST`
* Endpoint: `/chat/{token}/read`
* Data:
field | type | Description
------|------|------------
`lastReadMessage` | int | The last read message ID
* Response:
- Header:
+ `200 OK`
+ `404 Not Found` When the room could not be found for the participant,
or the participant is a guest.
## Get mention autocomplete suggestions
* Method: `GET`
* Endpoint: `/chat/{token}/mentions`
* Data:
field | type | Description
------|------|------------
`search` | string | Search term for name suggestions (should at least be 1 character)
`limit` | int | Number of suggestions to receive (20 by default)
* Response:
- Status code:
+ `200 OK`
+ `403 Forbidden` When the conversation is read-only
+ `404 Not Found` When the conversation could not be found for the participant
+ `412 Precondition Failed` When the lobby is active and the user is not a moderator
- Data:
Array of suggestions, each suggestion has at least:
field | type | Description
------|------|------------
`id` | string | The user id which should be sent as `@<id>` in the message (user ids that contain spaces as well as guest ids need to be wrapped in double-quotes when sending in a message: `@"space user"` and `@"guest/random-string"`)
`label` | string | The displayname of the user
`source` | string | The type of the user, currently only `users`, `guests` or `calls` (for mentioning the whole conversation
## System messages
* `conversation_created` - {actor} created the conversation
* `conversation_renamed` - {actor} renamed the conversation from "foo" to "bar"
* `call_started` - {actor} started a call
* `call_joined` - {actor} joined the call
* `call_left` - {actor} left the call
* `call_ended` - Call with {user1}, {user2}, {user3}, {user4} and {user5} (Duration 30:23)
* `read_only_off` - {actor} unlocked the conversation
* `read_only` - {actor} locked the conversation
* `lobby_timer_reached` - The conversation is now open to everyone
* `lobby_none` - {actor} opened the conversation to everyone
* `lobby_non_moderators` - {actor} restricted the conversation to moderators
* `guests_allowed` - {actor} allowed guests in the conversation
* `guests_disallowed` - {actor} disallowed guests in the conversation
* `password_set` - {actor} set a password for the conversation
* `password_removed` - {actor} removed the password for the conversation
* `user_added` - {actor} added {user} to the conversation
* `user_removed` - {actor} removed {user} from the conversation
* `moderator_promoted` - {actor} promoted {user} to moderator
* `moderator_demoted` - {actor} demoted {user} from moderator
* `guest_moderator_promoted` - {actor} promoted {user} to moderator
* `guest_moderator_demoted` - {actor} demoted {user} from moderator
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