use serde::Serialize;
use sqlx::{FromRow, SqlitePool};

#[derive(FromRow, Serialize, Clone, Debug)]
pub struct Distance {
    pub id: i64,
    pub destination: String,
    pub distance_in_km: i64,
}

impl Distance {
    /// Return all default `distance`s, ordered by usage in logbook entries
    pub async fn all(db: &SqlitePool) -> Vec<Self> {
        sqlx::query_as!(
            Self,
            "SELECT 
    d.id,
    d.destination,
    d.distance_in_km
FROM 
    distance d
LEFT JOIN 
    logbook l ON d.destination = l.destination AND d.distance_in_km = l.distance_in_km
GROUP BY 
    d.id, d.destination, d.distance_in_km
ORDER BY 
    COUNT(l.id) DESC, d.destination ASC;"
        )
        .fetch_all(db)
        .await
        .unwrap()
    }
}