//! OP-Reth CLI implementation.

#![doc(
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    html_favicon_url = "https://avatars0.githubusercontent.com/u/97369466?s=256",
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#![cfg_attr(all(not(test), feature = "optimism"), warn(unused_crate_dependencies))]
#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
// The `optimism` feature must be enabled to use this crate.
#![cfg(feature = "optimism")]

/// Optimism chain specification parser.
pub mod chainspec;
/// Optimism CLI commands.
pub mod commands;
/// Module with a codec for reading and encoding receipts in files.
///
/// Enables decoding and encoding `OpGethReceipt` type. See <https://github.com/testinprod-io/op-geth/pull/1>.
///
/// Currently configured to use codec [`OpGethReceipt`](receipt_file_codec::OpGethReceipt) based on
/// export of below Bedrock data using <https://github.com/testinprod-io/op-geth/pull/1>. Codec can
/// be replaced with regular encoding of receipts for export.
///
/// NOTE: receipts can be exported using regular op-geth encoding for `Receipt` type, to fit
/// reth's needs for importing. However, this would require patching the diff in <https://github.com/testinprod-io/op-geth/pull/1> to export the `Receipt` and not `OpGethReceipt` type (originally
/// made for op-erigon's import needs).
pub mod receipt_file_codec;

/// OVM block, same as EVM block at bedrock, except for signature of deposit transaction
/// not having a signature back then.
/// Enables decoding and encoding `Block` types within file contexts.
pub mod ovm_file_codec;

pub use commands::{import::ImportOpCommand, import_receipts::ImportReceiptsOpCommand};
use reth_optimism_chainspec::OpChainSpec;

use std::{ffi::OsString, fmt, sync::Arc};

use chainspec::OpChainSpecParser;
use clap::{command, value_parser, Parser};
use commands::Commands;
use futures_util::Future;
use reth_chainspec::EthChainSpec;
use reth_cli::chainspec::ChainSpecParser;
use reth_cli_commands::node::NoArgs;
use reth_cli_runner::CliRunner;
use reth_db::DatabaseEnv;
use reth_node_builder::{NodeBuilder, WithLaunchContext};
use reth_node_core::{
    args::LogArgs,
    version::{LONG_VERSION, SHORT_VERSION},
};
use reth_optimism_evm::OpExecutorProvider;
use reth_optimism_node::{OpNetworkPrimitives, OpNode};
use reth_tracing::FileWorkerGuard;
use tracing::info;

// This allows us to manually enable node metrics features, required for proper jemalloc metric
// reporting
use reth_node_metrics as _;
use reth_node_metrics::recorder::install_prometheus_recorder;

/// The main op-reth cli interface.
///
/// This is the entrypoint to the executable.
#[derive(Debug, Parser)]
#[command(author, version = SHORT_VERSION, long_version = LONG_VERSION, about = "Reth", long_about = None)]
pub struct Cli<Spec: ChainSpecParser = OpChainSpecParser, Ext: clap::Args + fmt::Debug = NoArgs> {
    /// The command to run
    #[command(subcommand)]
    pub command: Commands<Spec, Ext>,

    /// The chain this node is running.
    ///
    /// Possible values are either a built-in chain or the path to a chain specification file.
    #[arg(
        long,
        value_name = "CHAIN_OR_PATH",
        long_help = Spec::help_message(),
        default_value = Spec::SUPPORTED_CHAINS[0],
        value_parser = Spec::parser(),
        global = true,
    )]
    pub chain: Arc<Spec::ChainSpec>,

    /// Add a new instance of a node.
    ///
    /// Configures the ports of the node to avoid conflicts with the defaults.
    /// This is useful for running multiple nodes on the same machine.
    ///
    /// Max number of instances is 200. It is chosen in a way so that it's not possible to have
    /// port numbers that conflict with each other.
    ///
    /// Changes to the following port numbers:
    /// - `DISCOVERY_PORT`: default + `instance` - 1
    /// - `AUTH_PORT`: default + `instance` * 100 - 100
    /// - `HTTP_RPC_PORT`: default - `instance` + 1
    /// - `WS_RPC_PORT`: default + `instance` * 2 - 2
    #[arg(long, value_name = "INSTANCE", global = true, default_value_t = 1, value_parser = value_parser!(u16).range(..=200))]
    pub instance: u16,

    /// The logging configuration for the CLI.
    #[command(flatten)]
    pub logs: LogArgs,
}

impl Cli {
    /// Parsers only the default CLI arguments
    pub fn parse_args() -> Self {
        Self::parse()
    }

    /// Parsers only the default CLI arguments from the given iterator
    pub fn try_parse_args_from<I, T>(itr: I) -> Result<Self, clap::error::Error>
    where
        I: IntoIterator<Item = T>,
        T: Into<OsString> + Clone,
    {
        Self::try_parse_from(itr)
    }
}

impl<C, Ext> Cli<C, Ext>
where
    C: ChainSpecParser<ChainSpec = OpChainSpec>,
    Ext: clap::Args + fmt::Debug,
{
    /// Execute the configured cli command.
    ///
    /// This accepts a closure that is used to launch the node via the
    /// [`NodeCommand`](reth_cli_commands::node::NodeCommand).
    pub fn run<L, Fut>(mut self, launcher: L) -> eyre::Result<()>
    where
        L: FnOnce(WithLaunchContext<NodeBuilder<Arc<DatabaseEnv>, C::ChainSpec>>, Ext) -> Fut,
        Fut: Future<Output = eyre::Result<()>>,
    {
        // add network name to logs dir
        self.logs.log_file_directory =
            self.logs.log_file_directory.join(self.chain.chain().to_string());

        let _guard = self.init_tracing()?;
        info!(target: "reth::cli", "Initialized tracing, debug log directory: {}", self.logs.log_file_directory);

        // Install the prometheus recorder to be sure to record all metrics
        let _ = install_prometheus_recorder();

        let runner = CliRunner::default();
        match self.command {
            Commands::Node(command) => {
                runner.run_command_until_exit(|ctx| command.execute(ctx, launcher))
            }
            Commands::Init(command) => {
                runner.run_blocking_until_ctrl_c(command.execute::<OpNode>())
            }
            Commands::InitState(command) => {
                runner.run_blocking_until_ctrl_c(command.execute::<OpNode>())
            }
            Commands::ImportOp(command) => {
                runner.run_blocking_until_ctrl_c(command.execute::<OpNode>())
            }
            Commands::ImportReceiptsOp(command) => {
                runner.run_blocking_until_ctrl_c(command.execute::<OpNode>())
            }
            Commands::DumpGenesis(command) => runner.run_blocking_until_ctrl_c(command.execute()),
            Commands::Db(command) => runner.run_blocking_until_ctrl_c(command.execute::<OpNode>()),
            Commands::Stage(command) => runner.run_command_until_exit(|ctx| {
                command
                    .execute::<OpNode, _, _, OpNetworkPrimitives>(ctx, OpExecutorProvider::optimism)
            }),
            Commands::P2P(command) => {
                runner.run_until_ctrl_c(command.execute::<OpNetworkPrimitives>())
            }
            Commands::Config(command) => runner.run_until_ctrl_c(command.execute()),
            Commands::Recover(command) => {
                runner.run_command_until_exit(|ctx| command.execute::<OpNode>(ctx))
            }
            Commands::Prune(command) => runner.run_until_ctrl_c(command.execute::<OpNode>()),
            #[cfg(feature = "dev")]
            Commands::TestVectors(command) => runner.run_until_ctrl_c(command.execute()),
        }
    }

    /// Initializes tracing with the configured options.
    ///
    /// If file logging is enabled, this function returns a guard that must be kept alive to ensure
    /// that all logs are flushed to disk.
    pub fn init_tracing(&self) -> eyre::Result<Option<FileWorkerGuard>> {
        let guard = self.logs.init_tracing()?;
        Ok(guard)
    }
}

#[cfg(test)]
mod test {
    use crate::chainspec::OpChainSpecParser;
    use clap::Parser;
    use reth_cli_commands::{node::NoArgs, NodeCommand};
    use reth_optimism_chainspec::OP_DEV;

    #[test]
    fn parse_dev() {
        let cmd = NodeCommand::<OpChainSpecParser, NoArgs>::parse_from(["op-reth", "--dev"]);
        let chain = OP_DEV.clone();
        assert_eq!(cmd.chain.chain, chain.chain);
        assert_eq!(cmd.chain.genesis_hash, chain.genesis_hash);
        assert_eq!(
            cmd.chain.paris_block_and_final_difficulty,
            chain.paris_block_and_final_difficulty
        );
        assert_eq!(cmd.chain.hardforks, chain.hardforks);

        assert!(cmd.rpc.http);
        assert!(cmd.network.discovery.disable_discovery);

        assert!(cmd.dev.dev);
    }
}
