use directories::ProjectDirs;
use domasi::Alert;
use domasi::Pomodoro;
use std::fs;
use std::path::PathBuf;

fn main() {
    let mut args = std::env::args_os();

    if let Some(os_string) = args.nth(1) {
        match os_string.to_str() {
            Some("-C") | Some("--create-config") => {
                let _ = create_alert_directory();
            }
            None => {}
            arg => println!("Unsupported Argument: {}", arg.unwrap()),
        }
    }

    let mut domasi: Pomodoro = Default::default();

    match get_alert() {
        Some(alert) => domasi.start(Some(alert)).unwrap(),
        None => domasi.start(None).unwrap(),
    }
}

fn create_alert_directory() -> std::io::Result<()> {
    let alert_dir = ProjectDirs::from("moe", "paoda", "domasi")
        .unwrap()
        .data_dir()
        .to_path_buf()
        .join("alert");

    fs::create_dir_all(alert_dir)?;
    Ok(())
}

fn get_alert() -> Option<Alert> {
    let alert_dir = ProjectDirs::from("moe", "paoda", "domasi")
        .unwrap()
        .data_dir()
        .to_path_buf()
        .join("alert");

    let file = find_alert_file(alert_dir)?;
    Some(Alert::new(file))
}

fn find_alert_file(path: PathBuf) -> Option<PathBuf> {
    let items = fs::read_dir(path).ok()?;

    for entry_result in items {
        if let Ok(entry) = entry_result {
            if let Some(ext) = entry.path().extension() {
                if let Some("mp3") | Some("wav") | Some("ogg") | Some("flac") = ext.to_str() {
                    return Some(entry.path());
                }
            }
        }
    }

    None
}