use silentdragonlitelib::lightclient::{self, LightClientConfig};
use silentdragonlite_cli::{configure_clapapp,
                    report_permission_error,
                    startup,
                    start_interactive,
                    attempt_recover_seed};
use log::error;

pub fn main() {
    // Get command line arguments
    use clap::{App, Arg};
    let fresh_app = App::new("SilentDragonLite CLI");
    let configured_app = configure_clapapp!(fresh_app);
    let matches = configured_app.get_matches();
    if matches.is_present("recover") {
        // Create a Light Client Config in an attempt to recover the file.
        attempt_recover_seed();
        return;
    }

    let command = matches.value_of("COMMAND");
    let params = matches.values_of("PARAMS").map(|v| v.collect()).or(Some(vec![])).unwrap();

    let maybe_server   = matches.value_of("server").map(|s| s.to_string());

    let seed           = matches.value_of("seed").map(|s| s.to_string());
    let maybe_birthday = matches.value_of("birthday");
    
    if seed.is_some() && maybe_birthday.is_none() {
        eprintln!("ERROR!");
        eprintln!("Please specify the wallet birthday (eg. '--birthday 600000') to restore from seed.");
        eprintln!("This should be the block height where the wallet was created. If you don't remember the block height, you can pass '--birthday 0' to scan from the start of the blockchain.");
        return;
    }

    let birthday = match maybe_birthday.unwrap_or("0").parse::<u64>() {
                        Ok(b) => b,
                        Err(e) => {
                            eprintln!("Couldn't parse birthday. This should be a block number. Error={}", e);
                            return;
                        }
                    };

    let server = LightClientConfig::get_server_or_default(maybe_server);

    // Test to make sure the server has all of scheme, host and port
    if server.scheme_str().is_none() || server.host().is_none() || server.port().is_none() {
        eprintln!("Please provide the --server parameter as [scheme]://[host]:[port].\nYou provided: {}", server);
        return;
    }

    let dangerous = matches.is_present("dangerous");
    let nosync = matches.is_present("nosync");
    let (command_tx, resp_rx) = match startup(server, dangerous, seed, birthday, !nosync, command.is_none()) {
        Ok(c) => c,
        Err(e) => {
            eprintln!("Error during startup: {}", e);
            error!("Error during startup: {}", e);
            if cfg!(target_os = "unix" ) {
                match e.raw_os_error() {
                    Some(13) => report_permission_error(),
                    _        => {},
                }
            };
            return;
        }
    };

    if command.is_none() {
        start_interactive(command_tx, resp_rx);
    } else {
        command_tx.send(
            (command.unwrap().to_string(),
                params.iter().map(|s| s.to_string()).collect::<Vec<String>>()))
            .unwrap();

        match resp_rx.recv() {
            Ok(s) => println!("{}", s),
            Err(e) => {
                let e = format!("Error executing command {}: {}", command.unwrap(), e);
                eprintln!("{}", e);
                error!("{}", e);
            }
        }

        // Save before exit
        command_tx.send(("save".to_string(), vec![])).unwrap();
        resp_rx.recv().unwrap();
    }
}