use diesel::{BoolExpressionMethods, ExpressionMethods, Insertable, QueryDsl, Queryable, RunQueryDsl};
use serde::{Serialize, Deserialize};
use uuid::Uuid;

use crate::schema::gamenight_participant;

use super::error::DatabaseError;
use super::DbConnection;

#[derive(Serialize, Deserialize, Debug, Insertable, Queryable)]
#[diesel(belongs_to(Gamenight))]
#[diesel(belongs_to(User))]
#[diesel(table_name = gamenight_participant)]
pub struct GamenightParticipant {
    pub gamenight_id: Uuid,
    pub user_id: Uuid,
}

pub fn get_participants(conn: &mut DbConnection, id: &Uuid) -> Result<Vec<Uuid>, DatabaseError> {
    Ok(gamenight_participant::table
        .filter(gamenight_participant::gamenight_id.eq(&id))
        .select(gamenight_participant::user_id)
        .get_results(conn)?)
}

pub fn insert_gamenight_participant(conn: &mut DbConnection, gp: GamenightParticipant) -> Result<usize, DatabaseError> {
    Ok(gp.insert_into(gamenight_participant::table).execute(conn)?)
}

pub fn delete_gamenight_participant(conn: &mut DbConnection, gp: GamenightParticipant) -> Result<usize, DatabaseError> {
    Ok(diesel::delete(gamenight_participant::table
        .filter(gamenight_participant::gamenight_id.eq(&gp.gamenight_id)
            .and(gamenight_participant::user_id.eq(gp.user_id))))
        .execute(conn)?)

}