pub struct AppState {
    mp_tracks: Vec<Track>,
    p_tracks: Vec<Track>,
}

impl AppState {
    async fn try_new() -> Self {
        Self {
            mp_tracks: serde_json::from_str(
                &std::fs::read_to_string("content/mp-tracks.json")
                    .expect("mp-tracks.json non trouvé"),
            )
            .expect("JSON invalide"),
            p_tracks: serde_json::from_str(
                &std::fs::read_to_string("content/p-tracks.json")
                    .expect("p-tracks.json non trouvé"),
            )
            .expect("JSON invalide"),
        }
    }
}