use anyhow::Error;
use anyhow::Result;
use diesel::PgConnection;
use diesel::prelude::*;

use crate::schema::endpoints::*;
use crate::schema::endpoints;

#[derive(Identifiable, Queryable)]
pub struct Endpoint {
    pub id: i32,
    pub name: String,
}

#[derive(Insertable)]
#[table_name="endpoints"]
struct NewEndpoint<'a> {
    pub name: &'a str,
}

impl Endpoint {
    pub fn create_or_fetch(database_connection: &PgConnection, ep_name: &str) -> Result<Endpoint> {
        let new_ep = NewEndpoint { name: ep_name };

        diesel::insert_into(endpoints::table)
            .values(&new_ep)
            .on_conflict_do_nothing()
            .execute(database_connection)?;

        dsl::endpoints
            .filter(name.eq(ep_name))
            .first::<Endpoint>(database_connection)
            .map_err(Error::from)
    }
}