mod config;
mod logging;
mod server;

use std::net::{Ipv6Addr, SocketAddr};

use clap::Parser;
use tokio::net::TcpListener;
use tracing::info;

use crate::{config::Config, logging::initialise_logging, server::state::{AppState }};

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let cli = config::Cli::parse();
    let mut config: Config = if let Some(ref path) = cli.config {
        let contents = std::fs::read_to_string(path)?;
        toml::from_str(&contents)?
    } else {
        Default::default()
    };
    config.merge_with_cli(&cli);

    initialise_logging(&config);

    let state = AppState::new(&config).await?;
    let router = server::router(&config, state).await?;

    let addr = SocketAddr::from((Ipv6Addr::UNSPECIFIED, config.server.port));
    info!(port = addr.port(), "starting server");
    let listener = TcpListener::bind(addr).await?;

    // Run the server with graceful shutdown
    axum::serve(listener, router)
        .with_graceful_shutdown(server::shutdown::shutdown_signal())
        .await?;

    Ok(())
}