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use bytes::Bytes;

/// XXX(hdevalence): hide merkle::proof and re-export its contents from merkle?
use crate::merkle::proof as merkle;
use crate::{abci::Code, block, prelude::*};

#[doc = include_str!("../doc/response-query.md")]
#[derive(Clone, PartialEq, Eq, Debug, Default)]
pub struct Query {
    /// The response code for the query.
    pub code: Code,
    /// The output of the application's logger.
    ///
    /// **May be non-deterministic**.
    pub log: String,
    /// Additional information.
    ///
    /// **May be non-deterministic**.
    pub info: String,
    /// The index of the key in the tree.
    pub index: i64,
    /// The key of the matching data.
    pub key: Bytes,
    /// The value of the matching data.
    pub value: Bytes,
    /// Serialized proof for the value data, if requested, to be verified against
    /// the app hash for the given `height`.
    pub proof: Option<merkle::ProofOps>,
    /// The block height from which data was derived.
    ///
    /// Note that this is the height of the block containing the application's
    /// Merkle root hash, which represents the state as it was after committing
    /// the block at `height - 1`.
    pub height: block::Height,
    /// The namespace for the `code`.
    pub codespace: String,
}

// =============================================================================
// Protobuf conversions
// =============================================================================

mod v1 {
    use super::Query;
    use cometbft_proto::abci::v1 as pb;
    use cometbft_proto::Protobuf;

    impl From<Query> for pb::QueryResponse {
        fn from(query: Query) -> Self {
            Self {
                code: query.code.into(),
                log: query.log,
                info: query.info,
                index: query.index,
                key: query.key,
                value: query.value,
                proof_ops: query.proof.map(Into::into),
                height: query.height.into(),
                codespace: query.codespace,
            }
        }
    }

    impl TryFrom<pb::QueryResponse> for Query {
        type Error = crate::Error;

        fn try_from(query: pb::QueryResponse) -> Result<Self, Self::Error> {
            Ok(Self {
                code: query.code.into(),
                log: query.log,
                info: query.info,
                index: query.index,
                key: query.key,
                value: query.value,
                proof: query.proof_ops.map(TryInto::try_into).transpose()?,
                height: query.height.try_into()?,
                codespace: query.codespace,
            })
        }
    }

    impl Protobuf<pb::QueryResponse> for Query {}
}

mod v1beta1 {
    use super::Query;
    use cometbft_proto::abci::v1beta1 as pb;
    use cometbft_proto::Protobuf;

    impl From<Query> for pb::ResponseQuery {
        fn from(query: Query) -> Self {
            Self {
                code: query.code.into(),
                log: query.log,
                info: query.info,
                index: query.index,
                key: query.key,
                value: query.value,
                proof_ops: query.proof.map(Into::into),
                height: query.height.into(),
                codespace: query.codespace,
            }
        }
    }

    impl TryFrom<pb::ResponseQuery> for Query {
        type Error = crate::Error;

        fn try_from(query: pb::ResponseQuery) -> Result<Self, Self::Error> {
            Ok(Self {
                code: query.code.into(),
                log: query.log,
                info: query.info,
                index: query.index,
                key: query.key,
                value: query.value,
                proof: query.proof_ops.map(TryInto::try_into).transpose()?,
                height: query.height.try_into()?,
                codespace: query.codespace,
            })
        }
    }

    impl Protobuf<pb::ResponseQuery> for Query {}
}