use dotenv::dotenv;
use std::collections::HashMap;
use std::env;
use std::str::FromStr;
use tokio::{select, signal};
use tracing::Level;
use utils::consul_registration;
use utils::service_discovery::get_service_address;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    dotenv().ok();
    tracing_subscriber::fmt()
        .with_max_level(Level::from_str(&env::var("LOG_LEVEL").unwrap_or_else(|_| "info".to_string())).unwrap_or_else(|_| Level::INFO))
        .init();

    // Set the gRPC server address
    let addr = env::var("LISTEN_ADDR").unwrap_or_else(|_| "127.0.0.1".to_string());
    let port = env::var("WORLD_SERVICE_PORT").unwrap_or_else(|_| "50054".to_string());
    let health_port = env::var("HEALTH_CHECK_PORT").unwrap_or_else(|_| "8084".to_string());

    let consul_url = env::var("CONSUL_URL").unwrap_or_else(|_| "http://127.0.0.1:8500".to_string());
    let service_name = env::var("SERVICE_NAME").unwrap_or_else(|_| "world-service".to_string());
    let service_address = env::var("WORLD_SERVICE_ADDR").unwrap_or_else(|_| "127.0.0.1".to_string());
    let service_port = port.clone();
    let health_check_url = format!("http://{}:{}/health", service_address, health_port);
    let health_check_endpoint_addr = format!("{}:{}", service_address, health_port);
    let db_nodes = get_service_address(&consul_url, "database-service").await?;

    // Register service with Consul
    let service_id = consul_registration::generate_service_id();
    let tags = vec!["version-1.0".to_string()];
    let mut meta = HashMap::new();
    meta.insert("name".to_string(), "Athena".to_string());
    consul_registration::register_service(
        &consul_url,
        service_id.as_str(),
        service_name.as_str(),
        service_address.as_str(),
        service_port.parse().unwrap_or(50054),
        tags,
        meta,
        &health_check_url,
    )
        .await?;

    // Start health-check endpoint
    consul_registration::start_health_check(addr.as_str()).await?;

    let db_address = db_nodes.get(0).unwrap();
    let db_url = format!("http://{}:{}", db_address.ServiceAddress, db_address.ServicePort);

    select! {
        _ = signal::ctrl_c() => {},
    }

    consul_registration::deregister_service(&consul_url, service_id.as_str()).await.expect("");
    Ok(())
}