mod api;
mod config;
#[cfg(feature = "gui")]
mod gui;
mod token_store;

use api::ApiClient;
use config::{AppConfig, Command};
use std::env;
use std::process::ExitCode;
use token_store::keyring_identity;

fn main() -> ExitCode {
    let args: Vec<String> = env::args().collect();
    match run(&args) {
        Ok(()) => ExitCode::SUCCESS,
        Err(err) => {
            eprintln!("erreur: {err}");
            ExitCode::FAILURE
        }
    }
}

fn run(args: &[String]) -> Result<(), String> {
    let (config, command) = AppConfig::from_args(args)?;

    match command {
        Command::Capabilities => {
            let client = ApiClient::new(&config.server_url, config.token)?;
            let body = client.get_capabilities()?;
            println!("{body}");
        }
        Command::Status => {
            let client = ApiClient::new(&config.server_url, config.token)?;
            let body = client.get_system_status()?;
            println!("{body}");
        }
        Command::Metrics => {
            let client = ApiClient::new(&config.server_url, config.token)?;
            let body = client.get_system_metrics()?;
            println!("{body}");
        }
        Command::Machines => {
            let client = ApiClient::new(&config.server_url, config.token)?;
            let body = client.get_machines()?;
            println!("{body}");
        }
        Command::Gui => run_gui(config)?,
        Command::Help => print_help(),
    }

    Ok(())
}

#[cfg(feature = "gui")]
fn run_gui(config: AppConfig) -> Result<(), String> {
    gui::run(config);
    Ok(())
}

#[cfg(not(feature = "gui"))]
fn run_gui(_config: AppConfig) -> Result<(), String> {
    Err(
        "l'interface graphique n'est pas compilée. Lance: cargo run --features gui -- gui"
            .to_string(),
    )
}

fn print_help() {
    let (keyring_service, keyring_account) = keyring_identity();
    println!(
        "system-update-gnome\n\
         \n\
         Usage:\n\
          system-update-gnome --server http://127.0.0.1:8787 capabilities\n\
          system-update-gnome --server http://127.0.0.1:8787 status\n\
          system-update-gnome --server http://127.0.0.1:8787 metrics\n\
          system-update-gnome --server http://127.0.0.1:8787 machines\n\
          system-update-gnome --server http://127.0.0.1:8787 gui\n\
         \n\
         Variables:\n\
         SYSTEM_UPDATE_SERVER   URL du backend, défaut http://127.0.0.1:8787\n\
         SYSTEM_UPDATE_TOKEN    Token API optionnel\n\
         \n\
         Futur trousseau:\n\
           service: {keyring_service}\n\
           compte:  {keyring_account}\n"
    );
}