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/*
 * ‌
 * Hedera Rust SDK
 * ​
 * Copyright (C) 2022 - 2023 Hedera Hashgraph, LLC
 * ​
 * 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 async_trait::async_trait;
use hedera_proto::services;
use hedera_proto::services::smart_contract_service_client::SmartContractServiceClient;
use tonic::transport::Channel;

use crate::query::{
    AnyQueryData,
    QueryExecute,
    ToQueryProtobuf,
};
use crate::{
    ContractId,
    ContractInfo,
    Query,
    ToProtobuf,
};

/// Get information about a smart contract instance.
pub type ContractInfoQuery = Query<ContractInfoQueryData>;

#[cfg_attr(feature = "ffi", serde_with::skip_serializing_none)]
#[derive(Default, Debug, Clone)]
#[cfg_attr(feature = "ffi", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "ffi", serde(rename_all = "camelCase"))]
pub struct ContractInfoQueryData {
    /// The contract for which information is requested.
    contract_id: Option<ContractId>,
}

impl ContractInfoQuery {
    /// Sets the contract for which information is requested.
    pub fn contract_id(&mut self, contract_id: ContractId) -> &mut Self {
        self.data.contract_id = Some(contract_id);
        self
    }
}

impl From<ContractInfoQueryData> for AnyQueryData {
    #[inline]
    fn from(data: ContractInfoQueryData) -> Self {
        Self::ContractInfo(data)
    }
}

impl ToQueryProtobuf for ContractInfoQueryData {
    fn to_query_protobuf(&self, header: services::QueryHeader) -> services::Query {
        let contract_id = self.contract_id.to_protobuf();

        services::Query {
            query: Some(services::query::Query::ContractGetInfo(services::ContractGetInfoQuery {
                contract_id,
                header: Some(header),
            })),
        }
    }
}

#[async_trait]
impl QueryExecute for ContractInfoQueryData {
    type Response = ContractInfo;

    async fn execute(
        &self,
        channel: Channel,
        request: services::Query,
    ) -> Result<tonic::Response<services::Response>, tonic::Status> {
        SmartContractServiceClient::new(channel).get_contract_info(request).await
    }
}