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/*
 * Copyright 2020 Nuclei Studio OÜ
 *
 * 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.
 */

//! Implement node specific RPC handlers.

use governance_os_primitives::{AccountId, Balance, Block, Index};
use jsonrpc_core::IoHandler;
pub use sc_rpc_api::DenyUnsafe;
use sp_api::ProvideRuntimeApi;
use sp_block_builder::BlockBuilder;
use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
use sp_transaction_pool::TransactionPool;
use std::sync::Arc;

/// Full client dependencies.
pub struct FullDeps<C, P> {
    /// The client instance to use.
    pub client: Arc<C>,
    /// Transaction pool instance.
    pub pool: Arc<P>,
    /// Whether to deny unsafe calls
    pub deny_unsafe: DenyUnsafe,
}

/// Instantiate all RPC extensions for a full node.
pub fn create_full<C, P>(deps: FullDeps<C, P>) -> IoHandler<sc_rpc::Metadata>
where
    C: ProvideRuntimeApi<Block>,
    C: HeaderBackend<Block> + HeaderMetadata<Block, Error = BlockChainError> + 'static,
    C: Send + Sync + 'static,
    C::Api: substrate_frame_rpc_system::AccountNonceApi<Block, AccountId, Index>,
    C::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>,
    C::Api: BlockBuilder<Block>,
    P: TransactionPool + 'static,
{
    use pallet_transaction_payment_rpc::{TransactionPayment, TransactionPaymentApi};
    use substrate_frame_rpc_system::{FullSystem, SystemApi};

    let mut io = IoHandler::default();
    let FullDeps {
        client,
        pool,
        deny_unsafe,
    } = deps;

    io.extend_with(SystemApi::to_delegate(FullSystem::new(
        client.clone(),
        pool,
        deny_unsafe,
    )));

    io.extend_with(TransactionPaymentApi::to_delegate(TransactionPayment::new(
        client.clone(),
    )));

    // Extend this RPC with a custom API by using the following syntax.
    // `YourRpcStruct` should have a reference to a client, which is needed
    // to call into the runtime.
    // `io.extend_with(YourRpcTrait::to_delegate(YourRpcStruct::new(ReferenceToClient, ...)));`

    io
}