use std::process::Command;

mod config;
mod learner;
mod state;
mod trajectory;

use crate::{config::default_state_path, state::State};

fn mpc_load_and_play(path: &str) {
    _ = Command::new("mpc")
        .arg("clear")
        .output()
        .expect("failed to execute mpc clear");

    _ = Command::new("mpc")
        .args(["add", path])
        .output()
        .expect("failed to execute mpc add");

    _ = Command::new("mpc")
        .arg("play")
        .output()
        .expect("failed to execute mpc play");
}

fn notify(text: &str) {
    if let Err(e) = Command::new("notify-send")
        .args(["-t", "5000", "-a", "mood", &text])
        .status()
    {
        eprintln!("Failed to show notification: {e}");
    }
}

fn main() {
    let state = State::load(&default_state_path());
    let mut state = match state {
        Err(e) => {
            eprintln!("Failed to load state: {e}");
            State::default()
        }
        Ok(s) => s,
    };

    let ur = state.update_albums();
    println!("Update result: {ur}");

    if let Some((next_album, prob)) = state.next() {
        let text = format!("Now playing: {next_album} ({:.2}%)", prob * 100.0);
        println!("{text}");
        mpc_load_and_play(&next_album);
        notify(&text);
    } else {
        println!("No next album available.");
    }

    if let Err(e) = state.try_save() {
        eprintln!("Failed to save state: {e}");
    }
}