#[macro_use]
extern crate lazy_static;

use clap::{crate_description, crate_name, crate_version, App, AppSettings, Arg, SubCommand};
use solana_sdk::pubkey::Pubkey;

mod build_env;
mod command;
mod config;
mod defaults;
mod update_manifest;

fn main() -> Result<(), String> {
    solana_logger::setup();

    let matches = App::new(crate_name!())
        .about(crate_description!())
        .version(crate_version!())
        .setting(AppSettings::SubcommandRequiredElseHelp)
        .arg({
            let arg = Arg::with_name("config_file")
                .short("c")
                .long("config")
                .value_name("PATH")
                .takes_value(true)
                .help("Configuration file to use");
            match *defaults::CONFIG_FILE {
                Some(ref config_file) => arg.default_value(&config_file),
                None => arg.required(true),
            }
        })
        .subcommand(
            SubCommand::with_name("init")
                .about("initializes a new installation")
                .setting(AppSettings::DisableVersion)
                .arg({
                    let arg = Arg::with_name("data_dir")
                        .short("d")
                        .long("data_dir")
                        .value_name("PATH")
                        .takes_value(true)
                        .help("Directory to store install data");
                    match *defaults::DATA_DIR {
                        Some(ref data_dir) => arg.default_value(&data_dir),
                        None => arg.required(true),
                    }
                })
                .arg(
                    Arg::with_name("json_rpc_url")
                        .short("u")
                        .long("url")
                        .value_name("URL")
                        .takes_value(true)
                        .default_value(defaults::JSON_RPC_URL)
                        .help("JSON RPC URL for the solana cluster"),
                )
                .arg({
                    let arg = Arg::with_name("update_pubkey")
                        .short("p")
                        .long("pubkey")
                        .value_name("PUBKEY")
                        .takes_value(true)
                        .validator(|value| match value.parse::<Pubkey>() {
                            Ok(_) => Ok(()),
                            Err(err) => Err(format!("{:?}", err)),
                        })
                        .help("Public key of the update manifest");

                    match defaults::update_pubkey(build_env::TARGET) {
                        Some(default_value) => arg.default_value(default_value),
                        None => arg.required(true),
                    }
                }),
        )
        .subcommand(
            SubCommand::with_name("info")
                .about("displays information about the current installation")
                .setting(AppSettings::DisableVersion)
                .arg(
                    Arg::with_name("local_info_only")
                        .short("l")
                        .long("local")
                        .help(
                        "only display local information, don't check the cluster for new updates",
                    ),
                ),
        )
        .subcommand(
            SubCommand::with_name("deploy")
                .about("deploys a new update")
                .setting(AppSettings::DisableVersion)
                .arg(
                    Arg::with_name("download_url")
                        .index(1)
                        .required(true)
                        .help("URL to the solana release archive"),
                )
                .arg(
                    Arg::with_name("update_manifest_keypair")
                        .index(2)
                        .required(true)
                        .help("Keypair file for the update manifest (/path/to/keypair.json)"),
                ),
        )
        .subcommand(
            SubCommand::with_name("update")
                .about("checks for an update, and if available downloads and applies it")
                .setting(AppSettings::DisableVersion),
        )
        .subcommand(
            SubCommand::with_name("run")
                .about("Runs a program while periodically checking and applying software updates")
                .after_help("The program will be restarted upon a successful software update")
                .setting(AppSettings::DisableVersion)
                .arg(
                    Arg::with_name("program_name")
                        .index(1)
                        .required(true)
                        .help("program to run"),
                )
                .arg(
                    Arg::with_name("program_arguments")
                        .index(2)
                        .multiple(true)
                        .help("arguments to supply to the program"),
                ),
        )
        .get_matches();

    let config_file = matches.value_of("config_file").unwrap();

    match matches.subcommand() {
        ("init", Some(matches)) => {
            let json_rpc_url = matches.value_of("json_rpc_url").unwrap();
            let update_pubkey = matches
                .value_of("update_pubkey")
                .unwrap()
                .parse::<Pubkey>()
                .unwrap();
            let data_dir = matches.value_of("data_dir").unwrap();
            command::init(config_file, data_dir, json_rpc_url, &update_pubkey)
        }
        ("info", Some(matches)) => {
            let local_info_only = matches.is_present("local_info_only");
            command::info(config_file, local_info_only)
        }
        ("deploy", Some(matches)) => {
            let download_url = matches.value_of("download_url").unwrap();
            let update_manifest_keypair = matches.value_of("update_manifest_keypair").unwrap();
            command::deploy(config_file, download_url, update_manifest_keypair)
        }
        ("update", Some(_matches)) => command::update(config_file),
        ("run", Some(matches)) => {
            let program_name = matches.value_of("program_name").unwrap();
            let program_arguments = matches
                .values_of("program_arguments")
                .map(|iter| iter.collect())
                .unwrap_or_else(|| vec![]);

            command::run(config_file, program_name, program_arguments)
        }
        _ => unreachable!(),
    }
}