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// Copyright (C) 2019-2023 Aleo Systems Inc.
// This file is part of the snarkOS library.

// 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 super::*;

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Disconnect {
    pub reason: DisconnectReason,
}

impl MessageTrait for Disconnect {
    /// Returns the message name.
    #[inline]
    fn name(&self) -> String {
        "Disconnect".to_string()
    }

    /// Serializes the message into the buffer.
    #[inline]
    fn serialize<W: Write>(&self, writer: &mut W) -> Result<()> {
        Ok(bincode::serialize_into(writer, &self.reason)?)
    }

    /// Deserializes the given buffer into a message.
    #[inline]
    fn deserialize(bytes: BytesMut) -> Result<Self> {
        if bytes.remaining() == 0 {
            Ok(Self { reason: DisconnectReason::NoReasonGiven })
        } else if let Ok(reason) = bincode::deserialize_from(&mut bytes.reader()) {
            Ok(Self { reason })
        } else {
            bail!("Invalid 'Disconnect' message");
        }
    }
}

impl From<DisconnectReason> for Disconnect {
    fn from(reason: DisconnectReason) -> Self {
        Self { reason }
    }
}