// Copyright 2015-2019 Parity Technologies (UK) Ltd.
// This file is part of Parity Ethereum.

// Parity Ethereum 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.

// Parity Ethereum 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 Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

use ethcore::client::BlockChainClient;
use parity_ipfs_api::{self, error::ServerError, AccessControlAllowOrigin, Host, Listening};
use std::sync::Arc;

#[derive(Debug, PartialEq, Clone)]
pub struct Configuration {
    pub enabled: bool,
    pub port: u16,
    pub interface: String,
    pub cors: Option<Vec<String>>,
    pub hosts: Option<Vec<String>>,
}

impl Default for Configuration {
    fn default() -> Self {
        Configuration {
            enabled: false,
            port: 5001,
            interface: "127.0.0.1".into(),
            cors: Some(vec![]),
            hosts: Some(vec![]),
        }
    }
}

pub fn start_server(
    conf: Configuration,
    client: Arc<dyn BlockChainClient>,
) -> Result<Option<Listening>, ServerError> {
    if !conf.enabled {
        return Ok(None);
    }

    let cors = conf.cors.map(|cors| {
        cors.into_iter()
            .map(AccessControlAllowOrigin::from)
            .collect()
    });
    let hosts = conf
        .hosts
        .map(|hosts| hosts.into_iter().map(Host::from).collect());

    parity_ipfs_api::start_server(conf.port, conf.interface, cors.into(), hosts.into(), client)
        .map(Some)
}