mod character_db_client;
mod character_service;
pub mod database {
    tonic::include_proto!("character_db_api");
}

use crate::character_db_client::CharacterDbClient;
use crate::character_service::character::character_service_server::CharacterServiceServer;
use crate::character_service::MyCharacterService;
use dotenv::dotenv;
use std::collections::HashMap;
use std::env;
use std::str::FromStr;
use std::sync::Arc;
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(|_| "0.0.0.0".to_string());
    let port = env::var("CHARACTER_SERVICE_PORT").unwrap_or_else(|_| "50053".to_string());
    let health_port = env::var("HEALTH_CHECK_PORT").unwrap_or_else(|_| "8083".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(|_| "character-service".to_string());
    let service_address =
        env::var("CHARACTER_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::get_or_generate_service_id(env!("CARGO_PKG_NAME"));
    let version = env!("CARGO_PKG_VERSION").to_string();
    let tags = vec![version];
    let mut meta = HashMap::new();
    meta.insert("name".to_string(), "Rose".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(50052),
        tags,
        meta,
        &health_check_url,
    )
    .await?;

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

    let full_addr = format!("{}:{}", &addr, port);
    let address = full_addr.parse().expect("Invalid address");
    let db_address = db_nodes.get(0).unwrap();
    let db_url = format!(
        "http://{}:{}",
        db_address.ServiceAddress, db_address.ServicePort
    );
    let character_db_client = Arc::new(CharacterDbClient::connect(&db_url).await?);
    let character_service = MyCharacterService {
        character_db_client,
    };

    tonic::transport::Server::builder()
        .add_service(CharacterServiceServer::new(character_service))
        .serve(address)
        .await?;

    utils::signal_handler::wait_for_signal().await;

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