use clap::{Arg, ArgMatches, Command};
use clap_complete::{generate, Shell};
use detee_cli::config::Config;
use detee_cli::*;
use std::io;
use utils::block_on;

const ABOUT: &str = r#"The DeTEE Admin CLI got created for the testnet.
It allows you to:
    - airdrop tokens to other accounts
    - list all accounts
    - list all contracts

The admin pubkeys are hardcoded in the brain."#;

shadow_rs::shadow!(build);

fn main() {
    let _ = rustls::crypto::aws_lc_rs::default_provider().install_default();
    let log_level = match std::env::var("LOG_LEVEL") {
        Ok(val) => match val.as_str() {
            "DEBUG" => log::LevelFilter::Debug,
            "INFO" => log::LevelFilter::Info,
            _ => log::LevelFilter::Error,
        },
        _ => log::LevelFilter::Warn,
    };
    env_logger::builder().filter_level(log_level).format_timestamp(None).init();

    let cmd = Command::new("super-detee-cli")
        .version(build::CLAP_LONG_VERSION)
        .author("https://detee.ltd")
        .about(ABOUT)
        .subcommand(
            Command::new("completion").about("generates shell completion scripts").arg(
                Arg::new("shell")
                    .help("The shell to generate the script for")
                    .value_parser(["bash", "zsh", "fish"])
                    .required(true),
            ),
        )
        .subcommand(Command::new("contract").about("list all vm contracts"))
        .subcommand(
            Command::new("airdrop")
                .about("give an airdrop to a user")
                .arg(Arg::new("wallet").help("pubkey of the wallet").long("wallet").required(true))
                .arg(
                    Arg::new("amount")
                        .help("the amount of token you want to airdrop")
                        .long("amount")
                        .value_parser(clap::value_parser!(u64).range(0..1_000_000))
                        .required(true),
                ),
        )
        .subcommand(
            Command::new("slash")
                .about("forcefully slash a user")
                .arg(
                    Arg::new("wallet")
                        .help("pubkey of the wallet you are slashing")
                        .long("wallet")
                        .required(true),
                )
                .arg(
                    Arg::new("amount")
                        .help("the amount of tokens you are slashing")
                        .long("amount")
                        .value_parser(clap::value_parser!(u64).range(0..1_000_000))
                        .required(true),
                ),
        )
        .subcommand(
            Command::new("account")
                .about("account and security data for this CLI")
                .subcommand(Command::new("list").about("list all accounts that exist in the brain"))
                .subcommand(
                    Command::new("show").about("show account data associated with this CLI"),
                )
                .subcommand(
                    Command::new("network")
                        .about("specify if you connect to testnet or staging")
                        .arg(
                            Arg::new("name")
                                .help("name of the network you are connecting to")
                                .required(true),
                        ),
                ),
        );

    let matches = cmd.clone().get_matches();

    match matches.subcommand() {
        Some(("completion", subcom_args)) => handle_completion(subcom_args, cmd),
        Some(("contract", subcom_args)) => handle_contracts(subcom_args),
        Some(("airdrop", subcom_args)) => handle_airdrop(subcom_args),
        Some(("slash", subcom_args)) => handle_slash(subcom_args),
        Some(("account", subcom_args)) => handle_account(subcom_args),
        _ => println!("No valid subcommand provided. Use --help for more information."),
    }
}

fn handle_completion(matches: &ArgMatches, mut cmd: Command) {
    if let Some(shell) = matches.get_one::<String>("shell") {
        let shell: Shell = shell.parse().expect("Invalid shell type");
        generate(shell, &mut cmd, "super-detee-cli", &mut io::stdout());
    }
}

fn handle_account(matches: &ArgMatches) {
    match matches.subcommand() {
        Some(("show", _)) => cli_print(Ok(config::Config::get_account_data())),
        Some(("list", _)) => match block_on(general::grpc::admin_list_accounts()) {
            Ok(accounts) => {
                for a in accounts {
                    println!("{} {} {}", a.pubkey, a.balance, a.tmp_locked);
                }
            }
            Err(e) => println!("Could not get contracts due to error: {e:?}"),
        },
        Some(("network", path_subcommand)) => {
            let name: String = path_subcommand.get_one::<String>("name").unwrap().clone();
            Config::set_network(&name);
        }
        _ => cli_print(Ok(config::Config::get_account_data())),
    }
}

fn handle_contracts(_matches: &ArgMatches) {
    match block_on(general::grpc::admin_list_contracts()) {
        Ok(contracts) => {
            for c in contracts {
                println!(
                    "{} {} {} {} {}",
                    c.admin_pubkey, c.created_at, c.hostname, c.nano_per_minute, c.locked_nano
                )
            }
        }
        Err(e) => println!("Could not get contracts due to error: {e:?}"),
    }
}

fn handle_airdrop(matches: &ArgMatches) {
    let wallet: String = matches.get_one::<String>("wallet").unwrap().clone();
    let tokens = *matches.get_one::<u64>("amount").unwrap();
    match block_on(general::grpc::admin_airdrop(wallet, tokens)) {
        Ok(()) => println!("Success."),
        Err(e) => println!("Could not give airdrop due to error: {e:?}"),
    }
}

fn handle_slash(matches: &ArgMatches) {
    let wallet: String = matches.get_one::<String>("wallet").unwrap().clone();
    let tokens = *matches.get_one::<u64>("amount").unwrap();
    match block_on(general::grpc::admin_slash(wallet, tokens)) {
        Ok(()) => println!("Success."),
        Err(e) => println!("Could not slash wallet due to error: {e:?}"),
    }
}