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

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

use crate::events::EmptyStateKey;

/// The content of an `m.room.topic` event.
///
/// A topic is a short message detailing what is currently being discussed in the room.
#[derive(Clone, Debug, Deserialize, Serialize, EventContent)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
#[ruma_event(type = "m.room.topic", kind = State, state_key_type = EmptyStateKey)]
pub struct RoomTopicEventContent {
    /// The topic text.
    pub topic: String,
}

impl RoomTopicEventContent {
    /// Creates a new `RoomTopicEventContent` with the given topic.
    pub fn new(topic: String) -> Self {
        Self { topic }
    }
}