// Copyright 2019-2020 Parity Technologies (UK) Ltd.
// This file is part of substrate-subxt.
//
// subxt 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.
//
// subxt 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 substrate-subxt.  If not, see <http://www.gnu.org/licenses/>.

use crate::{
    chain_spec,
    cli::{
        Cli,
        Subcommand,
    },
    service,
};
use sc_cli::{
    ChainSpec,
    Role,
    RuntimeVersion,
    SubstrateCli,
};

impl SubstrateCli for Cli {
    fn impl_name() -> String {
        "Substrate Node".into()
    }

    fn impl_version() -> String {
        env!("SUBSTRATE_CLI_IMPL_VERSION").into()
    }

    fn description() -> String {
        env!("CARGO_PKG_DESCRIPTION").into()
    }

    fn author() -> String {
        env!("CARGO_PKG_AUTHORS").into()
    }

    fn support_url() -> String {
        "support.anonymous.an".into()
    }

    fn copyright_start_year() -> i32 {
        2017
    }

    fn load_spec(&self, id: &str) -> Result<Box<dyn sc_service::ChainSpec>, String> {
        Ok(match id {
            "dev" => Box::new(chain_spec::development_config()?),
            "" | "local" => Box::new(chain_spec::local_testnet_config()?),
            path => {
                Box::new(chain_spec::ChainSpec::from_json_file(
                    std::path::PathBuf::from(path),
                )?)
            }
        })
    }

    fn native_runtime_version(_: &Box<dyn ChainSpec>) -> &'static RuntimeVersion {
        &test_node_runtime::VERSION
    }
}

/// Parse and run command line arguments
pub fn run() -> sc_cli::Result<()> {
    let cli = Cli::from_args();

    match &cli.subcommand {
        Some(Subcommand::BuildSpec(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.sync_run(|config| cmd.run(config.chain_spec, config.network))
        }
        Some(Subcommand::PurgeChain(cmd)) => {
            let runner = cli.create_runner(cmd)?;
            runner.sync_run(|config| cmd.run(config.database))
        }
        None => {
            let runner = cli.create_runner(&cli.run)?;
            runner.run_node_until_exit(|config| {
                match config.role {
                    Role::Light => service::new_light(config),
                    _ => service::new_full(config),
                }
                .map(|service| service.0)
            })
        }
    }
}