// Copyright 2021 The Matrix.org Foundation C.I.C.
// Copyright 2021 Damir Jelić, Denis Kasak
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use serde::{Deserialize, Serialize};

use crate::Curve25519PublicKey;

/// The set of keys that were used to establish the Olm Session,
#[derive(Clone, Copy, Deserialize, Serialize, PartialEq, Eq)]
pub struct SessionKeys {
    pub identity_key: Curve25519PublicKey,
    pub base_key: Curve25519PublicKey,
    pub one_time_key: Curve25519PublicKey,
}

impl std::fmt::Debug for SessionKeys {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.debug_struct("SessionKeys")
            .field("identity_key", &self.identity_key.to_base64())
            .field("base_key", &self.base_key.to_base64())
            .field("one_time_key", &self.one_time_key.to_base64())
            .finish()
    }
}

#[cfg(feature = "libolm-compat")]
impl crate::utilities::Decode for SessionKeys {
    fn decode(
        reader: &mut impl std::io::Read,
    ) -> Result<Self, crate::utilities::LibolmDecodeError> {
        Ok(Self {
            identity_key: Curve25519PublicKey::decode(reader)?,
            base_key: Curve25519PublicKey::decode(reader)?,
            one_time_key: Curve25519PublicKey::decode(reader)?,
        })
    }
}