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// Copyright (c) The Diem Core Contributors
// SPDX-License-Identifier: Apache-2.0

// Copyright 2021 Conflux Foundation. All rights reserved.
// Conflux is free software and distributed under GNU General Public License.
// See http://www.gnu.org/licenses/

//! This module defines physical storage schema for consensus quorum certificate
//! (of a block).
//!
//! Serialized quorum certificate bytes identified by block_hash.
//! ```text
//! |<---key---->|<----value--->|
//! | block_hash |  QuorumCert  |
//! ```

use super::QC_CF_NAME;
use anyhow::Result;
use consensus_types::quorum_cert::{QuorumCert, QuorumCertUnchecked};
use diem_crypto::HashValue;
use schemadb::{
    define_schema,
    schema::{KeyCodec, ValueCodec},
};

define_schema!(QCSchema, HashValue, QuorumCert, QC_CF_NAME);

impl KeyCodec<QCSchema> for HashValue {
    fn encode_key(&self) -> Result<Vec<u8>> { Ok(self.to_vec()) }

    fn decode_key(data: &[u8]) -> Result<Self> {
        Ok(HashValue::from_slice(data)?)
    }
}

impl ValueCodec<QCSchema> for QuorumCert {
    fn encode_value(&self) -> Result<Vec<u8>> { Ok(bcs::to_bytes(self)?) }

    fn decode_value(data: &[u8]) -> Result<Self> {
        Ok(bcs::from_bytes::<QuorumCertUnchecked>(data).map(Into::into)?)
    }
}

#[cfg(test)]
mod test;