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//! Types for the [`m.key.verification.mac`] event.
//!
//! [`m.key.verification.mac`]: https://spec.matrix.org/latest/client-server-api/#mkeyverificationmac

use std::collections::BTreeMap;

use ruma_common::{serde::Base64, OwnedTransactionId};
use ruma_macros::EventContent;
use serde::{Deserialize, Serialize};

use crate::relation::Reference;

/// The content of a to-device `m.key.verification.` event.
///
/// Sends the MAC of a device's key to the partner device.
#[derive(Clone, Debug, Deserialize, Serialize, EventContent)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
#[ruma_event(type = "m.key.verification.mac", kind = ToDevice)]
pub struct ToDeviceKeyVerificationMacEventContent {
    /// An opaque identifier for the verification process.
    ///
    /// Must be the same as the one used for the `m.key.verification.start` message.
    pub transaction_id: OwnedTransactionId,

    /// A map of the key ID to the MAC of the key, using the algorithm in the verification process.
    ///
    /// The MAC is encoded as unpadded base64.
    pub mac: BTreeMap<String, Base64>,

    /// The MAC of the comma-separated, sorted, list of key IDs given in the `mac` property,
    /// encoded as unpadded base64.
    pub keys: Base64,
}

impl ToDeviceKeyVerificationMacEventContent {
    /// Creates a new `ToDeviceKeyVerificationMacEventContent` with the given transaction ID, key ID
    /// to MAC map and key MAC.
    pub fn new(
        transaction_id: OwnedTransactionId,
        mac: BTreeMap<String, Base64>,
        keys: Base64,
    ) -> Self {
        Self { transaction_id, mac, keys }
    }
}

/// The content of an in-room `m.key.verification.` event.
///
/// Sends the MAC of a device's key to the partner device.
#[derive(Clone, Debug, Deserialize, Serialize, EventContent)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
#[ruma_event(type = "m.key.verification.mac", kind = MessageLike)]
pub struct KeyVerificationMacEventContent {
    /// A map of the key ID to the MAC of the key, using the algorithm in the verification process.
    ///
    /// The MAC is encoded as unpadded base64.
    pub mac: BTreeMap<String, Base64>,

    /// The MAC of the comma-separated, sorted, list of key IDs given in the `mac` property,
    /// encoded as unpadded base64.
    pub keys: Base64,

    /// Information about the related event.
    #[serde(rename = "m.relates_to")]
    pub relates_to: Reference,
}

impl KeyVerificationMacEventContent {
    /// Creates a new `KeyVerificationMacEventContent` with the given key ID to MAC map, key MAC and
    /// reference.
    pub fn new(mac: BTreeMap<String, Base64>, keys: Base64, relates_to: Reference) -> Self {
        Self { mac, keys, relates_to }
    }
}