#[macro_use]
extern crate rocket;
#[macro_use]
extern crate diesel_migrations;

use figment::{
    providers::{Env, Format, Yaml},
    Figment,
};
use rb::auth::JwtConf;
use rocket::{
    fairing::AdHoc,
    http::Status,
    serde::json::{json, Value},
    Build, Request, Rocket,
};
use rocket_sync_db_pools::database;
use serde::{Deserialize, Serialize};

pub mod posts;
pub mod sections;

#[database("postgres_rb")]
pub struct RbDbConn(diesel::PgConnection);

#[catch(default)]
fn default_catcher(status: Status, _: &Request) -> Value
{
    json!({"status": status.code, "message": ""})
}

embed_migrations!();

async fn run_db_migrations(rocket: Rocket<Build>) -> Result<Rocket<Build>, Rocket<Build>>
{
    let conn = RbDbConn::get_one(&rocket)
        .await
        .expect("database connection");
    conn.run(|c| match embedded_migrations::run(c) {
        Ok(()) => Ok(rocket),
        Err(_) => Err(rocket),
    })
    .await
}

#[derive(Debug, Deserialize, Serialize)]
pub struct RbConfig
{
    admin_user: String,
    admin_pass: String,
    jwt: JwtConf,
}

#[launch]
fn rocket() -> _
{
    let figment = Figment::from(rocket::config::Config::default())
        .merge(Yaml::file("Rb.yaml").nested())
        .merge(Env::prefixed("RB_").global());

    // This mut is necessary when the "docs" or "web" feature is enabled, as these further modify
    // the instance variable
    rocket::custom(figment)
        .attach(RbDbConn::fairing())
        .attach(AdHoc::try_on_ignite(
            "Run database migrations",
            run_db_migrations,
        ))
        // .attach(AdHoc::try_on_ignite("Create admin user", create_admin_user))
        .attach(AdHoc::config::<JwtConf>())
        .register("/", catchers![default_catcher])
        .mount("/sections", routes![sections::create_section])
        .mount("/posts", routes![posts::get, posts::create])
}