// 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 std::{str::FromStr, sync::Arc};

use accounts::AccountProvider;
use bytes::ToPretty;
use crypto::publickey::Secret;
use ethcore::client::TestBlockChainClient;
use ethereum_types::{Address, H520, U256};
use hash::keccak;
use jsonrpc_core::IoHandler;
use parity_runtime::Runtime;
use parking_lot::Mutex;
use types::transaction::{Action, Transaction, TypedTransaction};

use serde_json::to_value;
use v1::{
    helpers::{
        dispatch::{eth_data_hash, FullDispatcher},
        eip191, nonce,
    },
    tests::helpers::TestMinerService,
    types::{EIP191Version, PresignedTransaction},
    Metadata, Personal, PersonalClient,
};

struct PersonalTester {
    _runtime: Runtime,
    accounts: Arc<AccountProvider>,
    io: IoHandler<Metadata>,
    miner: Arc<TestMinerService>,
}

fn blockchain_client() -> Arc<TestBlockChainClient> {
    let client = TestBlockChainClient::new();
    Arc::new(client)
}

fn accounts_provider() -> Arc<AccountProvider> {
    Arc::new(AccountProvider::transient_provider())
}

fn miner_service() -> Arc<TestMinerService> {
    Arc::new(TestMinerService::default())
}

fn setup() -> PersonalTester {
    setup_with(Config {
        allow_experimental_rpcs: true,
    })
}

struct Config {
    pub allow_experimental_rpcs: bool,
}

fn setup_with(c: Config) -> PersonalTester {
    let runtime = Runtime::with_thread_count(1);
    let accounts = accounts_provider();
    let client = blockchain_client();
    let miner = miner_service();
    let reservations = Arc::new(Mutex::new(nonce::Reservations::new(runtime.executor())));

    let dispatcher = FullDispatcher::new(client, miner.clone(), reservations, 50);
    let personal = PersonalClient::new(&accounts, dispatcher, c.allow_experimental_rpcs);

    let mut io = IoHandler::default();
    io.extend_with(personal.to_delegate());

    let tester = PersonalTester {
        _runtime: runtime,
        accounts: accounts,
        io: io,
        miner: miner,
    };

    tester
}

#[test]
fn accounts() {
    let tester = setup();
    let address = tester.accounts.new_account(&"".into()).unwrap();
    let request = r#"{"jsonrpc": "2.0", "method": "personal_listAccounts", "params": [], "id": 1}"#;
    let response = r#"{"jsonrpc":"2.0","result":[""#.to_owned()
        + &format!("0x{:x}", address)
        + r#""],"id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request),
        Some(response.to_owned())
    );
}

#[test]
fn new_account() {
    let tester = setup();
    let request =
        r#"{"jsonrpc": "2.0", "method": "personal_newAccount", "params": ["pass"], "id": 1}"#;

    let res = tester.io.handle_request_sync(request);

    let accounts = tester.accounts.accounts().unwrap();
    assert_eq!(accounts.len(), 1);
    let address = accounts[0];
    let response = r#"{"jsonrpc":"2.0","result":""#.to_owned()
        + format!("0x{:x}", address).as_ref()
        + r#"","id":1}"#;

    assert_eq!(res, Some(response));
}

fn invalid_password_test(method: &str) {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();

    let request = r#"{
		"jsonrpc": "2.0",
		"method": ""#
        .to_owned()
        + method
        + r#"",
		"params": [{
			"from": ""#
        + format!("0x{:x}", address).as_ref()
        + r#"",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a"
		}, "password321"],
		"id": 1
	}"#;

    let response = r#"{"jsonrpc":"2.0","error":{"code":-32021,"message":"Account password is invalid or account does not exist.","data":"SStore(InvalidPassword)"},"id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response.into())
    );
}

#[test]
fn sign() {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();
    let data = vec![5u8];

    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_sign",
		"params": [
			""#
    .to_owned()
        + format!("0x{}", data.to_hex()).as_ref()
        + r#"",
			""# + format!("0x{:x}", address).as_ref()
        + r#"",
			"password123"
		],
		"id": 1
	}"#;

    let hash = eth_data_hash(data);
    let signature = H520(
        tester
            .accounts
            .sign(address, Some("password123".into()), hash)
            .unwrap()
            .into_electrum(),
    );
    let signature = format!("{:?}", signature);

    let response = r#"{"jsonrpc":"2.0","result":""#.to_owned() + &signature + r#"","id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response)
    );
}

#[test]
fn sign_with_invalid_password() {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();

    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_sign",
		"params": [
			"0x0000000000000000000000000000000000000000000000000000000000000005",
			""#
    .to_owned()
        + format!("0x{:x}", address).as_ref()
        + r#"",
			""
		],
		"id": 1
	}"#;

    let response = r#"{"jsonrpc":"2.0","error":{"code":-32021,"message":"Account password is invalid or account does not exist.","data":"SStore(InvalidPassword)"},"id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response.into())
    );
}

#[test]
fn sign_transaction_with_invalid_password() {
    invalid_password_test("personal_signTransaction");
}

#[test]
fn sign_and_send_transaction_with_invalid_password() {
    invalid_password_test("personal_sendTransaction");
}

#[test]
fn send_transaction() {
    sign_and_send_test("personal_sendTransaction");
}

#[test]
fn sign_and_send_transaction() {
    sign_and_send_test("personal_signAndSendTransaction");
}

fn sign_and_send_test(method: &str) {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();

    let request = r#"{
		"jsonrpc": "2.0",
		"method": ""#
        .to_owned()
        + method
        + r#"",
		"params": [{
			"from": ""#
        + format!("0x{:x}", address).as_ref()
        + r#"",
			"to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
			"gas": "0x76c0",
			"gasPrice": "0x9184e72a000",
			"value": "0x9184e72a"
		}, "password123"],
		"id": 1
	}"#;

    let t = TypedTransaction::Legacy(Transaction {
        nonce: U256::zero(),
        gas_price: U256::from(0x9184e72a000u64),
        gas: U256::from(0x76c0),
        action: Action::Call(
            Address::from_str("d46e8dd67c5d32be8058bb8eb970870f07244567").unwrap(),
        ),
        value: U256::from(0x9184e72au64),
        data: vec![],
    });
    tester
        .accounts
        .unlock_account_temporarily(address, "password123".into())
        .unwrap();
    let signature = tester
        .accounts
        .sign(address, None, t.signature_hash(None))
        .unwrap();
    let t = t.with_signature(signature, None);

    let response = r#"{"jsonrpc":"2.0","result":""#.to_owned()
        + format!("0x{:x}", t.hash()).as_ref()
        + r#"","id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response)
    );

    tester.miner.increment_nonce(&address);

    let t = TypedTransaction::Legacy(Transaction {
        nonce: U256::one(),
        gas_price: U256::from(0x9184e72a000u64),
        gas: U256::from(0x76c0),
        action: Action::Call(
            Address::from_str("d46e8dd67c5d32be8058bb8eb970870f07244567").unwrap(),
        ),
        value: U256::from(0x9184e72au64),
        data: vec![],
    });
    tester
        .accounts
        .unlock_account_temporarily(address, "password123".into())
        .unwrap();
    let signature = tester
        .accounts
        .sign(address, None, t.signature_hash(None))
        .unwrap();
    let t = t.with_signature(signature, None);

    let response = r#"{"jsonrpc":"2.0","result":""#.to_owned()
        + format!("0x{:x}", t.hash()).as_ref()
        + r#"","id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response)
    );
}

#[test]
fn ec_recover() {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();
    let data = vec![5u8];

    let hash = eth_data_hash(data.clone());
    let signature = H520(
        tester
            .accounts
            .sign(address, Some("password123".into()), hash)
            .unwrap()
            .into_electrum(),
    );
    let signature = format!("{:?}", signature);

    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_ecRecover",
		"params": [
			""#
    .to_owned()
        + format!("0x{}", data.to_hex()).as_ref()
        + r#"",
			""# + &signature
        + r#""
		],
		"id": 1
	}"#;

    let address = format!("0x{:x}", address);
    let response = r#"{"jsonrpc":"2.0","result":""#.to_owned() + &address + r#"","id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response.into())
    );
}

#[test]
fn ec_recover_invalid_signature() {
    let tester = setup();
    let data = vec![5u8];

    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_ecRecover",
		"params": [
			""#
    .to_owned()
        + format!("0x{}", data.to_hex()).as_ref()
        + r#"",
			"0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
		],
		"id": 1
	}"#;

    let response = r#"{"jsonrpc":"2.0","error":{"code":-32055,"message":"Encryption error.","data":"InvalidSignature"},"id":1}"#;

    assert_eq!(
        tester.io.handle_request_sync(request.as_ref()),
        Some(response.into())
    );
}

#[test]
fn should_unlock_account_permanently() {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();
    let message = [1u8; 32].into();

    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_unlockAccount",
		"params": [
			""#
    .to_owned()
        + &format!("0x{:x}", address)
        + r#"",
			"password123",
			null
		],
		"id": 1
	}"#;
    let response = r#"{"jsonrpc":"2.0","result":true,"id":1}"#;
    assert_eq!(
        tester.io.handle_request_sync(&request),
        Some(response.into())
    );
    assert!(
        tester.accounts.sign(address, None, message).is_ok(),
        "Should unlock account."
    );
}

#[test]
fn sign_eip191_with_validator() {
    let tester = setup();
    let address = tester.accounts.new_account(&"password123".into()).unwrap();
    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_sign191",
		"params": [
			"0x00",
			{
				"validator": ""#
        .to_owned()
        + &format!("0x{:x}", address)
        + r#"",
				"data": ""#
        + &format!("0x{:x}", keccak("hello world"))
        + r#""
			},
			""# + &format!("0x{:x}", address)
        + r#"",
			"password123"
		],
		"id": 1
	}"#;
    let with_validator = to_value(PresignedTransaction {
        validator: address.into(),
        data: keccak("hello world").as_bytes().to_vec().into(),
    })
    .unwrap();
    let result = eip191::hash_message(EIP191Version::PresignedTransaction, with_validator).unwrap();
    let result = tester
        .accounts
        .sign(address, Some("password123".into()), result)
        .unwrap()
        .into_electrum();
    let expected = r#"{"jsonrpc":"2.0","result":""#.to_owned()
        + &format!("0x{}", result.to_hex())
        + r#"","id":1}"#;
    let response = tester.io.handle_request_sync(&request).unwrap();
    assert_eq!(response, expected)
}

#[test]
fn sign_eip191_structured_data() {
    let tester = setup();
    let secret: Secret = keccak("cow").into();
    let address = tester
        .accounts
        .insert_account(secret, &"lol".into())
        .unwrap();
    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_sign191",
		"params": [
			"0x01",
			{
				"primaryType": "Mail",
				"domain": {
					"name": "Ether Mail",
					"version": "1",
					"chainId": "0x1",
					"verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
				},
				"message": {
					"from": {
						"name": "Cow",
						"wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
					},
					"to": {
						"name": "Bob",
						"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
					},
					"contents": "Hello, Bob!"
				},
				"types": {
					"EIP712Domain": [
						{ "name": "name", "type": "string" },
						{ "name": "version", "type": "string" },
						{ "name": "chainId", "type": "uint256" },
						{ "name": "verifyingContract", "type": "address" }
					],
					"Person": [
						{ "name": "name", "type": "string" },
						{ "name": "wallet", "type": "address" }
					],
					"Mail": [
						{ "name": "from", "type": "Person" },
						{ "name": "to", "type": "Person" },
						{ "name": "contents", "type": "string" }
					]
				}
			},
			""#
    .to_owned()
        + &format!("0x{:x}", address)
        + r#"",
			"lol"
		],
		"id": 1
	}"#;
    let expected = r#"{"jsonrpc":"2.0","result":"0x4355c47d63924e8a72e509b65029052eb6c299d53a04e167c5775fd466751c9d07299936d304c153f6443dfa05f40ff007d72911b6f72307f996231605b915621c","id":1}"#;
    let response = tester.io.handle_request_sync(&request).unwrap();
    assert_eq!(response, expected)
}

#[test]
fn sign_structured_data() {
    let tester = setup();
    let secret: Secret = keccak("cow").into();
    let address = tester
        .accounts
        .insert_account(secret, &"lol".into())
        .unwrap();
    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_signTypedData",
		"params": [
			{
				"primaryType": "Mail",
				"domain": {
					"name": "Ether Mail",
					"version": "1",
					"chainId": "0x1",
					"verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
				},
				"message": {
					"from": {
						"name": "Cow",
						"wallet": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826"
					},
					"to": {
						"name": "Bob",
						"wallet": "0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB"
					},
					"contents": "Hello, Bob!"
				},
				"types": {
					"EIP712Domain": [
						{ "name": "name", "type": "string" },
						{ "name": "version", "type": "string" },
						{ "name": "chainId", "type": "uint256" },
						{ "name": "verifyingContract", "type": "address" }
					],
					"Person": [
						{ "name": "name", "type": "string" },
						{ "name": "wallet", "type": "address" }
					],
					"Mail": [
						{ "name": "from", "type": "Person" },
						{ "name": "to", "type": "Person" },
						{ "name": "contents", "type": "string" }
					]
				}
			},
			""#
    .to_owned()
        + &format!("0x{:x}", address)
        + r#"",
			"lol"
		],
		"id": 1
	}"#;
    let expected = r#"{"jsonrpc":"2.0","result":"0x4355c47d63924e8a72e509b65029052eb6c299d53a04e167c5775fd466751c9d07299936d304c153f6443dfa05f40ff007d72911b6f72307f996231605b915621c","id":1}"#;
    let response = tester.io.handle_request_sync(&request).unwrap();
    assert_eq!(response, expected)
}

#[test]
fn should_disable_experimental_apis() {
    // given
    let tester = setup_with(Config {
        allow_experimental_rpcs: false,
    });

    // when
    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_sign191",
		"params": [
			"0x01",
			{},
			"0x1234567891234567891234567891234567891234",
			"lol"
		],
		"id": 1
	}"#;
    let r1 = tester.io.handle_request_sync(&request).unwrap();
    let request = r#"{
		"jsonrpc": "2.0",
		"method": "personal_signTypedData",
		"params": [
			{
				"types": {},
				"message": {},
				"domain": {
					"name": "",
					"version": "1",
					"chainId": "0x1",
					"verifyingContract": "0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC"
				},
				"primaryType": ""
			},
			"0x1234567891234567891234567891234678912344",
			"lol"
		],
		"id": 1
	}"#;
    let r2 = tester.io.handle_request_sync(&request).unwrap();

    // then
    let expected = r#"{"jsonrpc":"2.0","error":{"code":-32071,"message":"This method is not part of the official RPC API yet (EIP-191). Run with `--jsonrpc-experimental` to enable it.","data":"See EIP: https://eips.ethereum.org/EIPS/eip-191"},"id":1}"#;
    assert_eq!(r1, expected);

    let expected = r#"{"jsonrpc":"2.0","error":{"code":-32071,"message":"This method is not part of the official RPC API yet (EIP-712). Run with `--jsonrpc-experimental` to enable it.","data":"See EIP: https://eips.ethereum.org/EIPS/eip-712"},"id":1}"#;
    assert_eq!(r2, expected);
}