// 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/>.

use bytes::Bytes;
use ethereum_types::{Address, H256, U256, U64};

use v1::types::{AccessList, Origin, TransactionCondition};

/// Transaction request coming from RPC
#[derive(Debug, Clone, Default, Eq, PartialEq, Hash)]
pub struct TransactionRequest {
    /// type of transaction.
    pub transaction_type: Option<U64>,
    /// Sender
    pub from: Option<Address>,
    /// Recipient
    pub to: Option<Address>,
    /// Gas Price
    pub gas_price: Option<U256>,
    /// Max fee per gas
    pub max_fee_per_gas: Option<U256>,
    /// Gas
    pub gas: Option<U256>,
    /// Value of transaction in wei
    pub value: Option<U256>,
    /// Additional data sent with transaction
    pub data: Option<Bytes>,
    /// Transaction's nonce
    pub nonce: Option<U256>,
    /// Delay until this condition is met.
    pub condition: Option<TransactionCondition>,
    /// Access list
    pub access_list: Option<AccessList>,
    /// Miner bribe
    pub max_priority_fee_per_gas: Option<U256>,
}

/// Transaction request coming from RPC with default values filled in.
#[derive(Debug, Clone, Default, Eq, PartialEq, Hash)]
pub struct FilledTransactionRequest {
    /// type of transaction.
    pub transaction_type: Option<U64>,
    /// Sender
    pub from: Address,
    /// Indicates if the sender was filled by default value.
    pub used_default_from: bool,
    /// Recipient
    pub to: Option<Address>,
    /// Gas Price
    pub gas_price: Option<U256>,
    /// Max fee per gas
    pub max_fee_per_gas: Option<U256>,
    /// Gas
    pub gas: U256,
    /// Value of transaction in wei
    pub value: U256,
    /// Additional data sent with transaction
    pub data: Bytes,
    /// Transaction's nonce
    pub nonce: Option<U256>,
    /// Delay until this condition is met.
    pub condition: Option<TransactionCondition>,
    /// Access list
    pub access_list: Option<AccessList>,
    /// Miner bribe
    pub max_priority_fee_per_gas: Option<U256>,
}

impl From<FilledTransactionRequest> for TransactionRequest {
    fn from(r: FilledTransactionRequest) -> Self {
        TransactionRequest {
            transaction_type: r.transaction_type,
            from: Some(r.from),
            to: r.to,
            gas_price: r.gas_price,
            max_fee_per_gas: r.max_fee_per_gas,
            gas: Some(r.gas),
            value: Some(r.value),
            data: Some(r.data),
            nonce: r.nonce,
            condition: r.condition,
            access_list: r.access_list.map(Into::into),
            max_priority_fee_per_gas: r.max_priority_fee_per_gas,
        }
    }
}

/// Call request
#[derive(Debug, Default, PartialEq)]
pub struct CallRequest {
    /// type of transaction.
    pub transaction_type: Option<U64>,
    /// From
    pub from: Option<Address>,
    /// To
    pub to: Option<Address>,
    /// Gas Price
    pub gas_price: Option<U256>,
    /// Max fee per gas
    pub max_fee_per_gas: Option<U256>,
    /// Gas
    pub gas: Option<U256>,
    /// Value
    pub value: Option<U256>,
    /// Data
    pub data: Option<Vec<u8>>,
    /// Nonce
    pub nonce: Option<U256>,
    /// Access list
    pub access_list: Option<AccessList>,
    /// Miner bribe
    pub max_priority_fee_per_gas: Option<U256>,
}

/// Confirmation object
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct ConfirmationRequest {
    /// Id of this confirmation
    pub id: U256,
    /// Payload to confirm
    pub payload: ConfirmationPayload,
    /// Request origin
    pub origin: Origin,
}

/// Payload to confirm in Trusted Signer
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub enum ConfirmationPayload {
    /// Transaction
    SendTransaction(FilledTransactionRequest),
    /// Sign Transaction
    SignTransaction(FilledTransactionRequest),
    /// Sign a message with an Ethereum specific security prefix.
    EthSignMessage(Address, Bytes),
    /// Sign a message
    SignMessage(Address, H256),
    /// Decrypt request
    Decrypt(Address, Bytes),
}

impl ConfirmationPayload {
    pub fn sender(&self) -> Address {
        match *self {
            ConfirmationPayload::SendTransaction(ref request) => request.from,
            ConfirmationPayload::SignTransaction(ref request) => request.from,
            ConfirmationPayload::EthSignMessage(ref address, _) => *address,
            ConfirmationPayload::SignMessage(ref address, _) => *address,
            ConfirmationPayload::Decrypt(ref address, _) => *address,
        }
    }
}