// 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/>.

extern crate ethereum_types;
extern crate ethstore;
extern crate parity_crypto as crypto;
extern crate rand;

mod util;

use std::str::FromStr;

use crypto::publickey::{verify_address, Generator, KeyPair, Random, Secret};
use ethereum_types::H160;
use ethstore::{
    accounts_dir::RootDiskDirectory, EthStore, SecretVaultRef, SimpleSecretStore, StoreAccountRef,
};
use util::TransientDir;

#[test]
fn secret_store_create() {
    let dir = TransientDir::create().unwrap();
    let _ = EthStore::open(Box::new(dir)).unwrap();
}

#[test]
#[should_panic]
fn secret_store_open_not_existing() {
    let dir = TransientDir::open();
    let _ = EthStore::open(Box::new(dir)).unwrap();
}

fn random_secret() -> Secret {
    Random.generate().secret().clone()
}

#[test]
fn secret_store_create_account() {
    let dir = TransientDir::create().unwrap();
    let store = EthStore::open(Box::new(dir)).unwrap();
    assert_eq!(store.accounts().unwrap().len(), 0);
    assert!(store
        .insert_account(SecretVaultRef::Root, random_secret(), &"".into())
        .is_ok());
    assert_eq!(store.accounts().unwrap().len(), 1);
    assert!(store
        .insert_account(SecretVaultRef::Root, random_secret(), &"".into())
        .is_ok());
    assert_eq!(store.accounts().unwrap().len(), 2);
}

#[test]
fn secret_store_sign() {
    let dir = TransientDir::create().unwrap();
    let store = EthStore::open(Box::new(dir)).unwrap();
    assert!(store
        .insert_account(SecretVaultRef::Root, random_secret(), &"".into())
        .is_ok());
    let accounts = store.accounts().unwrap();
    let message = [1u8; 32].into();
    assert_eq!(accounts.len(), 1);
    assert!(store.sign(&accounts[0], &"".into(), &message).is_ok());
    assert!(store.sign(&accounts[0], &"1".into(), &message).is_err());
}

#[test]
fn secret_store_change_password() {
    let dir = TransientDir::create().unwrap();
    let store = EthStore::open(Box::new(dir)).unwrap();
    assert!(store
        .insert_account(SecretVaultRef::Root, random_secret(), &"".into())
        .is_ok());
    let accounts = store.accounts().unwrap();
    let message = [1u8; 32].into();
    assert_eq!(accounts.len(), 1);
    assert!(store.sign(&accounts[0], &"".into(), &message).is_ok());
    assert!(store
        .change_password(&accounts[0], &"".into(), &"1".into())
        .is_ok());
    assert!(store.sign(&accounts[0], &"".into(), &message).is_err());
    assert!(store.sign(&accounts[0], &"1".into(), &message).is_ok());
}

#[test]
fn secret_store_remove_account() {
    let dir = TransientDir::create().unwrap();
    let store = EthStore::open(Box::new(dir)).unwrap();
    assert!(store
        .insert_account(SecretVaultRef::Root, random_secret(), &"".into())
        .is_ok());
    let accounts = store.accounts().unwrap();
    assert_eq!(accounts.len(), 1);
    assert!(store.remove_account(&accounts[0], &"".into()).is_ok());
    assert_eq!(store.accounts().unwrap().len(), 0);
    assert!(store.remove_account(&accounts[0], &"".into()).is_err());
}

fn test_path() -> &'static str {
    match ::std::fs::metadata("ethstore") {
        Ok(_) => "ethstore/tests/res/geth_keystore",
        Err(_) => "tests/res/geth_keystore",
    }
}

fn pat_path() -> &'static str {
    match ::std::fs::metadata("ethstore") {
        Ok(_) => "ethstore/tests/res/pat",
        Err(_) => "tests/res/pat",
    }
}

fn ciphertext_path() -> &'static str {
    match ::std::fs::metadata("ethstore") {
        Ok(_) => "ethstore/tests/res/ciphertext",
        Err(_) => "tests/res/ciphertext",
    }
}

#[test]
fn secret_store_laod_geth_files() {
    let dir = RootDiskDirectory::at(test_path());
    let store = EthStore::open(Box::new(dir)).unwrap();
    assert_eq!(
        store.accounts().unwrap(),
        vec![
            StoreAccountRef::root(
                H160::from_str("3f49624084b67849c7b4e805c5988c21a430f9d9").unwrap()
            ),
            StoreAccountRef::root(
                H160::from_str("5ba4dcf897e97c2bdf8315b9ef26c13c085988cf").unwrap()
            ),
            StoreAccountRef::root(
                H160::from_str("63121b431a52f8043c16fcf0d1df9cb7b5f66649").unwrap()
            ),
        ]
    );
}

#[test]
fn secret_store_load_pat_files() {
    let dir = RootDiskDirectory::at(pat_path());
    let store = EthStore::open(Box::new(dir)).unwrap();
    assert_eq!(
        store.accounts().unwrap(),
        vec![
            StoreAccountRef::root(
                H160::from_str("3f49624084b67849c7b4e805c5988c21a430f9d9").unwrap()
            ),
            StoreAccountRef::root(
                H160::from_str("5ba4dcf897e97c2bdf8315b9ef26c13c085988cf").unwrap()
            ),
        ]
    );
}

#[test]
fn test_decrypting_files_with_short_ciphertext() {
    // 31e9d1e6d844bd3a536800ef8d8be6a9975db509, 30
    let kp1 = KeyPair::from_secret(
        "000081c29e8142bb6a81bef5a92bda7a8328a5c85bb2f9542e76f9b0f94fc018"
            .parse()
            .unwrap(),
    )
    .unwrap();
    // d1e64e5480bfaf733ba7d48712decb8227797a4e , 31
    let kp2 = KeyPair::from_secret(
        "00fa7b3db73dc7dfdf8c5fbdb796d741e4488628c41fc4febd9160a866ba0f35"
            .parse()
            .unwrap(),
    )
    .unwrap();
    let dir = RootDiskDirectory::at(ciphertext_path());
    let store = EthStore::open(Box::new(dir)).unwrap();
    let accounts = store.accounts().unwrap();
    assert_eq!(
        accounts,
        vec![
            StoreAccountRef::root(
                H160::from_str("31e9d1e6d844bd3a536800ef8d8be6a9975db509").unwrap()
            ),
            StoreAccountRef::root(
                H160::from_str("d1e64e5480bfaf733ba7d48712decb8227797a4e").unwrap()
            ),
        ]
    );

    let message = [1u8; 32].into();

    let s1 = store.sign(&accounts[0], &"foo".into(), &message).unwrap();
    let s2 = store.sign(&accounts[1], &"foo".into(), &message).unwrap();
    assert!(verify_address(&accounts[0].address, &s1, &message).unwrap());
    assert!(verify_address(&kp1.address(), &s1, &message).unwrap());
    assert!(verify_address(&kp2.address(), &s2, &message).unwrap());
}
