use std::time::SystemTime;

use ruma_events_macros::Event;
use ruma_identifiers::{EventId, RoomId, UserId};

use crate::{
    BasicEventContent, EphemeralRoomEventContent, EventContent, MessageEventContent,
    StateEventContent, UnsignedData,
};

/// A basic event – one that consists only of it's type and the `content` object.
#[derive(Clone, Debug, Event)]
pub struct BasicEvent<C: BasicEventContent> {
    /// Data specific to the event type.
    pub content: C,
}

/// Ephemeral room event.
#[derive(Clone, Debug, Event)]
pub struct EphemeralRoomEvent<C: EphemeralRoomEventContent> {
    /// Data specific to the event type.
    pub content: C,

    /// The ID of the room associated with this event.
    pub room_id: RoomId,
}

/// Message event.
#[derive(Clone, Debug, Event)]
pub struct MessageEvent<C: MessageEventContent> {
    /// Data specific to the event type.
    pub content: C,

    /// The globally unique event identifier for the user who sent the event.
    pub event_id: EventId,

    /// The fully-qualified ID of the user who sent this event.
    pub sender: UserId,

    /// Timestamp in milliseconds on originating homeserver when this event was sent.
    pub origin_server_ts: SystemTime,

    /// The ID of the room associated with this event.
    pub room_id: RoomId,

    /// Additional key-value pairs not signed by the homeserver.
    pub unsigned: UnsignedData,
}

/// State event.
#[derive(Clone, Debug, Event)]
pub struct StateEvent<C: StateEventContent> {
    /// Data specific to the event type.
    pub content: C,

    /// The globally unique event identifier for the user who sent the event.
    pub event_id: EventId,

    /// The fully-qualified ID of the user who sent this event.
    pub sender: UserId,

    /// Timestamp in milliseconds on originating homeserver when this event was sent.
    pub origin_server_ts: SystemTime,

    /// The ID of the room associated with this event.
    pub room_id: RoomId,

    /// A unique key which defines the overwriting semantics for this piece of room state.
    ///
    /// This is often an empty string, but some events send a `UserId` to show
    /// which user the event affects.
    pub state_key: String,

    /// Optional previous content for this event.
    pub prev_content: Option<C>,

    /// Additional key-value pairs not signed by the homeserver.
    pub unsigned: UnsignedData,
}

#[derive(Clone, Debug, Event)]
pub struct ToDeviceEvent<C: EventContent> {
    /// Data specific to the event type.
    pub content: C,

    /// The fully-qualified ID of the user who sent this event.
    pub sender: UserId,
}