mod user;

use axum::Router;
use tokio::net::TcpListener;
use tracing::info;

use crate::{
    db::DbPool,
    models::{AppError, Environment},
};

#[derive(Clone)]
pub struct AppState {
    pool: DbPool,
    env: Environment,
}

impl AppState {
    pub fn new(pool: DbPool, env: Environment) -> Self {
        Self { pool, env }
    }

    pub fn pool(&self) -> &DbPool {
        &self.pool
    }

    pub fn env(&self) -> &Environment {
        &self.env
    }
}

pub async fn start_app(pool: DbPool, env: Environment) -> Result<(), AppError> {
    let address = env.hostname();
    let port = env.port();

    info!("Listening on {address}:{port}...");
    let listener = TcpListener::bind(format!("{address}:{port}"))
        .await
        .unwrap();

    let app_state = AppState::new(pool, env);
    let app = Router::new().merge(user::requests(app_state.clone()));

    info!("API started successfully.");
    axum::serve(listener, app)
        .await
        .map_err(AppError::app_startup)?;

    Ok(())
}