//! `GET /_matrix/client/*/sync`
//!
//! Get all new events from all rooms since the last sync or a given point in time.

use js_int::UInt;
use ruma_common::OwnedUserId;
use serde::{self, Deserialize, Serialize};

pub mod v3;

#[cfg(feature = "unstable-msc3575")]
pub mod v4;

/// Unread notifications count.
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
pub struct UnreadNotificationsCount {
    /// The number of unread notifications with the highlight flag set.
    #[serde(skip_serializing_if = "Option::is_none")]
    pub highlight_count: Option<UInt>,

    /// The total number of unread notifications.
    #[serde(skip_serializing_if = "Option::is_none")]
    pub notification_count: Option<UInt>,
}

impl UnreadNotificationsCount {
    /// Creates an empty `UnreadNotificationsCount`.
    pub fn new() -> Self {
        Default::default()
    }

    /// Returns true if there are no notification count updates.
    pub fn is_empty(&self) -> bool {
        self.highlight_count.is_none() && self.notification_count.is_none()
    }
}

/// Information on E2E device updates.
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
pub struct DeviceLists {
    /// List of users who have updated their device identity keys or who now
    /// share an encrypted room with the client since the previous sync.
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    pub changed: Vec<OwnedUserId>,

    /// List of users who no longer share encrypted rooms since the previous sync
    /// response.
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    pub left: Vec<OwnedUserId>,
}

impl DeviceLists {
    /// Creates an empty `DeviceLists`.
    pub fn new() -> Self {
        Default::default()
    }

    /// Returns true if there are no device list updates.
    pub fn is_empty(&self) -> bool {
        self.changed.is_empty() && self.left.is_empty()
    }
}
