1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74

//! Types for the [`m.room.tombstone`] event.
//!
//! [`m.room.tombstone`]: https://spec.matrix.org/v1.4/client-server-api/#mroomtombstone

use ruma_macros::EventContent;
use serde::{Deserialize, Serialize};

use crate::{
    events::{
        EmptyStateKey, EventContent, PossiblyRedactedStateEventContent, StateEventType,
        StaticEventContent,
    },
    OwnedRoomId,
};

/// The content of an `m.room.tombstone` event.
///
/// A state event signifying that a room has been upgraded to a different room version, and that
/// clients should go there.
#[derive(Clone, Debug, Deserialize, Serialize, EventContent)]
#[ruma_event(
    type = "m.room.tombstone",
    kind = State,
    state_key_type = EmptyStateKey,
    custom_possibly_redacted,
)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
pub struct RoomTombstoneEventContent {
    /// A server-defined message.
    ///
    /// If you activate the `compat` feature, this field being absent in JSON will result in an
    /// empty string here during deserialization.
    #[cfg_attr(feature = "compat", serde(default))]
    pub body: String,

    /// The new room the client should be visiting.
    pub replacement_room: OwnedRoomId,
}

impl RoomTombstoneEventContent {
    /// Creates a new `RoomTombstoneEventContent` with the given body and replacement room ID.
    pub fn new(body: String, replacement_room: OwnedRoomId) -> Self {
        Self { body, replacement_room }
    }
}

/// The possibly redacted form of [`RoomTombstoneEventContent`].
///
/// This type is used when it's not obvious whether the content is redacted or not.
#[derive(Clone, Debug, Deserialize, Serialize)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
pub struct PossiblyRedactedRoomTombstoneEventContent {
    /// A server-defined message.
    pub body: Option<String>,

    /// The new room the client should be visiting.
    pub replacement_room: Option<OwnedRoomId>,
}

impl EventContent for PossiblyRedactedRoomTombstoneEventContent {
    type EventType = StateEventType;

    fn event_type(&self) -> Self::EventType {
        StateEventType::RoomTombstone
    }
}

impl PossiblyRedactedStateEventContent for PossiblyRedactedRoomTombstoneEventContent {
    type StateKey = EmptyStateKey;
}

impl StaticEventContent for PossiblyRedactedRoomTombstoneEventContent {
    const TYPE: &'static str = "m.room.tombstone";
}