// This file is part of Substrate.

// Copyright (C) 2017-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// 	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

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

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 {
		&node_template_runtime::VERSION
	}
}

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

	match &cli.subcommand {
		Some(Subcommand::Key(cmd)) => cmd.run(&cli),
		Some(Subcommand::BuildSpec(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.sync_run(|config| cmd.run(config.chain_spec, config.network))
		},
		Some(Subcommand::CheckBlock(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.async_run(|config| {
				let PartialComponents { client, task_manager, import_queue, ..}
					= service::new_partial(&config)?;
				Ok((cmd.run(client, import_queue), task_manager))
			})
		},
		Some(Subcommand::ExportBlocks(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.async_run(|config| {
				let PartialComponents { client, task_manager, ..}
					= service::new_partial(&config)?;
				Ok((cmd.run(client, config.database), task_manager))
			})
		},
		Some(Subcommand::ExportState(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.async_run(|config| {
				let PartialComponents { client, task_manager, ..}
					= service::new_partial(&config)?;
				Ok((cmd.run(client, config.chain_spec), task_manager))
			})
		},
		Some(Subcommand::ImportBlocks(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.async_run(|config| {
				let PartialComponents { client, task_manager, import_queue, ..}
					= service::new_partial(&config)?;
				Ok((cmd.run(client, import_queue), task_manager))
			})
		},
		Some(Subcommand::PurgeChain(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.sync_run(|config| cmd.run(config.database))
		},
		Some(Subcommand::Revert(cmd)) => {
			let runner = cli.create_runner(cmd)?;
			runner.async_run(|config| {
				let PartialComponents { client, task_manager, backend, ..}
					= service::new_partial(&config)?;
				Ok((cmd.run(client, backend), task_manager))
			})
		},
		Some(Subcommand::Benchmark(cmd)) => {
			if cfg!(feature = "runtime-benchmarks") {
				let runner = cli.create_runner(cmd)?;

				runner.sync_run(|config| cmd.run::<Block, service::Executor>(config))
			} else {
				Err("Benchmarking wasn't enabled when building the node. \
				You can enable it with `--features runtime-benchmarks`.".into())
			}
		},
		None => {
			let runner = cli.create_runner(&cli.run)?;
			runner.run_node_until_exit(|config| async move {
				match config.role {
					Role::Light => service::new_light(config),
					_ => service::new_full(config),
				}
			})
		}
	}
}
