use std::net::SocketAddr;
use std::sync::Arc;

use tokio::net::TcpListener;
use tower::make::Shared;
use tracing_subscriber::EnvFilter;

use backend::auth::jwt::JwtService;
use backend::config::AppConfig;
use backend::db;
use backend::routes;
use backend::s3::build_client;
use backend::state::AppState;
use backend::storage::S3Storage;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    dotenv::dotenv().ok();
    init_tracing();

    let config = AppConfig::from_env()?;
    let pool = db::init_pool(&config.database_url)?;
    let s3_client = build_client(&config).await?;
    let storage = Arc::new(S3Storage::new(s3_client, config.s3_bucket.clone()));
    let jwt = JwtService::from_config(&config)?;

    let state = AppState::new(pool, config, storage, jwt);

    let router = routes::create_router(state.clone());

    let addr: SocketAddr =
        format!("{}:{}", state.config.server_host, state.config.server_port).parse()?;
    let listener = TcpListener::bind(addr).await?;
    tracing::info!("listening on {}", addr);

    axum::serve(listener, Shared::new(router)).await?;
    Ok(())
}

fn init_tracing() {
    let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info"));
    tracing_subscriber::fmt()
        .with_env_filter(filter)
        .with_target(false)
        .compact()
        .init();
}