// Copyright 2015-2020 Parity Technologies (UK) Ltd.
// This file is part of OpenEthereum.

// OpenEthereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// OpenEthereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with OpenEthereum.  If not, see <http://www.gnu.org/licenses/>.

//! Eth rpc interface.
use ethereum_types::{H160, H256, H64, U256, U64};
use jsonrpc_core::{BoxFuture, Result};
use jsonrpc_derive::rpc;

use v1::types::{
    BlockNumber, Bytes, CallRequest, EthAccount, EthFeeHistory, Filter, FilterChanges, Index, Log,
    Receipt, RichBlock, SyncStatus, Transaction, Work,
};

/// Eth rpc interface.
#[rpc(server)]
pub trait Eth {
    /// RPC Metadata
    type Metadata;

    /// Returns protocol version encoded as a string (quotes are necessary).
    #[rpc(name = "eth_protocolVersion")]
    fn protocol_version(&self) -> Result<String>;

    /// Returns an object with data about the sync status or false. (wtf?)
    #[rpc(name = "eth_syncing")]
    fn syncing(&self) -> Result<SyncStatus>;

    /// Returns the number of hashes per second that the node is mining with.
    #[rpc(name = "eth_hashrate")]
    fn hashrate(&self) -> Result<U256>;

    /// Returns block author.
    #[rpc(name = "eth_coinbase")]
    fn author(&self) -> Result<H160>;

    /// Returns true if client is actively mining new blocks.
    #[rpc(name = "eth_mining")]
    fn is_mining(&self) -> Result<bool>;

    /// Returns the chain ID used for transaction signing at the
    /// current best block. None is returned if not
    /// available.
    #[rpc(name = "eth_chainId")]
    fn chain_id(&self) -> Result<Option<U64>>;

    /// Returns current gas_price.
    #[rpc(name = "eth_gasPrice")]
    fn gas_price(&self) -> BoxFuture<U256>;

    /// Returns transaction fee history.
    #[rpc(name = "eth_feeHistory")]
    fn fee_history(&self, _: U256, _: BlockNumber, _: Option<Vec<f64>>)
        -> BoxFuture<EthFeeHistory>;

    /// Returns accounts list.
    #[rpc(name = "eth_accounts")]
    fn accounts(&self) -> Result<Vec<H160>>;

    /// Returns highest block number.
    #[rpc(name = "eth_blockNumber")]
    fn block_number(&self) -> Result<U256>;

    /// Returns balance of the given account.
    #[rpc(name = "eth_getBalance")]
    fn balance(&self, _: H160, _: Option<BlockNumber>) -> BoxFuture<U256>;

    /// Returns the account- and storage-values of the specified account including the Merkle-proof
    #[rpc(name = "eth_getProof")]
    fn proof(&self, _: H160, _: Vec<H256>, _: Option<BlockNumber>) -> BoxFuture<EthAccount>;

    /// Returns content of the storage at given address.
    #[rpc(name = "eth_getStorageAt")]
    fn storage_at(&self, _: H160, _: U256, _: Option<BlockNumber>) -> BoxFuture<H256>;

    /// Returns block with given hash.
    #[rpc(name = "eth_getBlockByHash")]
    fn block_by_hash(&self, _: H256, _: bool) -> BoxFuture<Option<RichBlock>>;

    /// Returns block with given number.
    #[rpc(name = "eth_getBlockByNumber")]
    fn block_by_number(&self, _: BlockNumber, _: bool) -> BoxFuture<Option<RichBlock>>;

    /// Returns the number of transactions sent from given address at given time (block number).
    #[rpc(name = "eth_getTransactionCount")]
    fn transaction_count(&self, _: H160, _: Option<BlockNumber>) -> BoxFuture<U256>;

    /// Returns the number of transactions in a block with given hash.
    #[rpc(name = "eth_getBlockTransactionCountByHash")]
    fn block_transaction_count_by_hash(&self, _: H256) -> BoxFuture<Option<U256>>;

    /// Returns the number of transactions in a block with given block number.
    #[rpc(name = "eth_getBlockTransactionCountByNumber")]
    fn block_transaction_count_by_number(&self, _: BlockNumber) -> BoxFuture<Option<U256>>;

    /// Returns the number of uncles in a block with given hash.
    #[rpc(name = "eth_getUncleCountByBlockHash")]
    fn block_uncles_count_by_hash(&self, _: H256) -> BoxFuture<Option<U256>>;

    /// Returns the number of uncles in a block with given block number.
    #[rpc(name = "eth_getUncleCountByBlockNumber")]
    fn block_uncles_count_by_number(&self, _: BlockNumber) -> BoxFuture<Option<U256>>;

    /// Returns the code at given address at given time (block number).
    #[rpc(name = "eth_getCode")]
    fn code_at(&self, _: H160, _: Option<BlockNumber>) -> BoxFuture<Bytes>;

    /// Sends signed transaction, returning its hash.
    #[rpc(name = "eth_sendRawTransaction")]
    fn send_raw_transaction(&self, _: Bytes) -> Result<H256>;

    /// @alias of `eth_sendRawTransaction`.
    #[rpc(name = "eth_submitTransaction")]
    fn submit_transaction(&self, _: Bytes) -> Result<H256>;

    /// Call contract, returning the output data.
    #[rpc(name = "eth_call")]
    fn call(&self, _: CallRequest, _: Option<BlockNumber>) -> BoxFuture<Bytes>;

    /// Estimate gas needed for execution of given contract.
    #[rpc(name = "eth_estimateGas")]
    fn estimate_gas(&self, _: CallRequest, _: Option<BlockNumber>) -> BoxFuture<U256>;

    /// Get transaction by its hash.
    #[rpc(name = "eth_getTransactionByHash")]
    fn transaction_by_hash(&self, _: H256) -> BoxFuture<Option<Transaction>>;

    /// Returns transaction at given block hash and index.
    #[rpc(name = "eth_getTransactionByBlockHashAndIndex")]
    fn transaction_by_block_hash_and_index(
        &self,
        _: H256,
        _: Index,
    ) -> BoxFuture<Option<Transaction>>;

    /// Returns transaction by given block number and index.
    #[rpc(name = "eth_getTransactionByBlockNumberAndIndex")]
    fn transaction_by_block_number_and_index(
        &self,
        _: BlockNumber,
        _: Index,
    ) -> BoxFuture<Option<Transaction>>;

    /// Returns transaction receipt by transaction hash.
    #[rpc(name = "eth_getTransactionReceipt")]
    fn transaction_receipt(&self, _: H256) -> BoxFuture<Option<Receipt>>;

    /// Returns an uncles at given block and index.
    #[rpc(name = "eth_getUncleByBlockHashAndIndex")]
    fn uncle_by_block_hash_and_index(&self, _: H256, _: Index) -> BoxFuture<Option<RichBlock>>;

    /// Returns an uncles at given block and index.
    #[rpc(name = "eth_getUncleByBlockNumberAndIndex")]
    fn uncle_by_block_number_and_index(
        &self,
        _: BlockNumber,
        _: Index,
    ) -> BoxFuture<Option<RichBlock>>;

    /// Returns available compilers.
    /// @deprecated
    #[rpc(name = "eth_getCompilers")]
    fn compilers(&self) -> Result<Vec<String>>;

    /// Compiles lll code.
    /// @deprecated
    #[rpc(name = "eth_compileLLL")]
    fn compile_lll(&self, _: String) -> Result<Bytes>;

    /// Compiles solidity.
    /// @deprecated
    #[rpc(name = "eth_compileSolidity")]
    fn compile_solidity(&self, _: String) -> Result<Bytes>;

    /// Compiles serpent.
    /// @deprecated
    #[rpc(name = "eth_compileSerpent")]
    fn compile_serpent(&self, _: String) -> Result<Bytes>;

    /// Returns logs matching given filter object.
    #[rpc(name = "eth_getLogs")]
    fn logs(&self, _: Filter) -> BoxFuture<Vec<Log>>;

    /// Returns the hash of the current block, the seedHash, and the boundary condition to be met.
    #[rpc(name = "eth_getWork")]
    fn work(&self, _: Option<u64>) -> Result<Work>;

    /// Used for submitting a proof-of-work solution.
    #[rpc(name = "eth_submitWork")]
    fn submit_work(&self, _: H64, _: H256, _: H256) -> Result<bool>;

    /// Used for submitting mining hashrate.
    #[rpc(name = "eth_submitHashrate")]
    fn submit_hashrate(&self, _: U256, _: H256) -> Result<bool>;
}

/// Eth filters rpc api (polling).
// TODO: do filters api properly
#[rpc(server)]
pub trait EthFilter {
    /// Returns id of new filter.
    #[rpc(name = "eth_newFilter")]
    fn new_filter(&self, _: Filter) -> Result<U256>;

    /// Returns id of new block filter.
    #[rpc(name = "eth_newBlockFilter")]
    fn new_block_filter(&self) -> Result<U256>;

    /// Returns id of new block filter.
    #[rpc(name = "eth_newPendingTransactionFilter")]
    fn new_pending_transaction_filter(&self) -> Result<U256>;

    /// Returns filter changes since last poll.
    #[rpc(name = "eth_getFilterChanges")]
    fn filter_changes(&self, _: Index) -> BoxFuture<FilterChanges>;

    /// Returns all logs matching given filter (in a range 'from' - 'to').
    #[rpc(name = "eth_getFilterLogs")]
    fn filter_logs(&self, _: Index) -> BoxFuture<Vec<Log>>;

    /// Uninstalls filter.
    #[rpc(name = "eth_uninstallFilter")]
    fn uninstall_filter(&self, _: Index) -> Result<bool>;
}