// 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 crate::{
    helpers::{password_from_file, password_prompt},
    params::SpecType,
};
use crypto::publickey;

use ethkey::Password;
use ethstore::PresaleWallet;
use std::num::NonZeroU32;

#[derive(Debug, PartialEq)]
pub struct ImportWallet {
    pub iterations: NonZeroU32,
    pub path: String,
    pub spec: SpecType,
    pub wallet_path: String,
    pub password_file: Option<String>,
}

pub fn execute(cmd: ImportWallet) -> Result<String, String> {
    let password = match cmd.password_file.clone() {
        Some(file) => password_from_file(file)?,
        None => password_prompt()?,
    };

    let wallet = PresaleWallet::open(cmd.wallet_path.clone())
        .map_err(|_| "Unable to open presale wallet.")?;
    let kp = wallet.decrypt(&password).map_err(|_| "Invalid password.")?;
    let address = kp.address();
    import_account(&cmd, kp, password);
    Ok(format!("{:?}", address))
}

#[cfg(feature = "accounts")]

pub fn import_account(cmd: &ImportWallet, kp: publickey::KeyPair, password: Password) {
    use accounts::{AccountProvider, AccountProviderSettings};
    use ethstore::{accounts_dir::RootDiskDirectory, EthStore};

    let dir = Box::new(RootDiskDirectory::create(cmd.path.clone()).unwrap());
    let secret_store = Box::new(EthStore::open_with_iterations(dir, cmd.iterations).unwrap());
    let acc_provider = AccountProvider::new(secret_store, AccountProviderSettings::default());
    acc_provider
        .insert_account(kp.secret().clone(), &password)
        .unwrap();
}

#[cfg(not(feature = "accounts"))]
pub fn import_account(_cmd: &ImportWallet, _kp: publickey::KeyPair, _password: Password) {}
