use hero_websocket_server::{ServerBuilder, ServerConfig};
use clap::Parser;

#[derive(Parser, Debug)]
#[clap(author, version, about, long_about = None)]
struct Args {
    #[clap(short = 'H', long, value_parser, default_value = "127.0.0.1")]
    host: String,

    #[clap(short, long, value_parser, default_value_t = 8443)]
    port: u16,

    #[clap(long, value_parser, default_value = "redis://127.0.0.1/")]
    redis_url: String,

    #[clap(long, help = "Enable authentication")]
    auth: bool,

    #[clap(long, help = "Enable TLS/WSS")]
    tls: bool,

    #[clap(long, value_parser, help = "Path to TLS certificate file")]
    cert: Option<String>,

    #[clap(long, value_parser, help = "Path to TLS private key file")]
    key: Option<String>,

    #[clap(long, value_parser, help = "Separate port for TLS connections")]
    tls_port: Option<u16>,

    #[clap(short, long, action = clap::ArgAction::Count, help = "Increase verbosity (-v for debug, -vv for trace)")]
    verbose: u8,

    #[clap(long, help = "Remove timestamps from log output")]
    no_timestamp: bool,

    #[clap(long, help = "Enable webhook handling")]
    webhooks: bool,

    #[clap(short, long, value_parser, help = "Path to configuration file")]
    config: Option<String>,

    #[clap(long, help = "Generate a sample configuration file")]
    generate_config: bool,
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    let args = Args::parse();

    // Handle config file generation
    if args.generate_config {
        let sample_config = ServerConfig::create_sample();
        let config_path = "config.json";
        match sample_config.to_file(config_path) {
            Ok(_) => {
                println!("✅ Sample configuration file generated: {}", config_path);
                println!("📝 Edit the file to customize your server configuration.");
                return Ok(());
            }
            Err(e) => {
                eprintln!("❌ Failed to generate config file: {}", e);
                std::process::exit(1);
            }
        }
    }

    // Load configuration from file if provided, otherwise use CLI args
    let config = if let Some(config_path) = &args.config {
        match ServerConfig::from_file(config_path) {
            Ok(config) => {
                println!("📄 Loaded configuration from: {}", config_path);
                config
            }
            Err(e) => {
                eprintln!("❌ Failed to load config file {}: {}", config_path, e);
                std::process::exit(1);
            }
        }
    } else {
        // Create config from CLI arguments
        ServerConfig {
            host: args.host.clone(),
            port: args.port,
            redis_url: args.redis_url.clone(),
            auth: args.auth,
            tls: args.tls,
            cert: args.cert.clone(),
            key: args.key.clone(),
            tls_port: args.tls_port,
            webhooks: args.webhooks,
            circles: std::collections::HashMap::new(), // Empty circles when using CLI
        }
    };

    // Configure logging based on verbosity level
    let log_config = match args.verbose {
        0 => {
            // Default: suppress actix server logs, show only hero_websocket_server info and above
            "warn,hero_websocket_server=info"
        }
        1 => {
            // -v: show debug for hero_websocket_server, info for actix
            "info,hero_websocket_server=debug,actix_server=info"
        }
        2 => {
            // -vv: show debug for everything
            "debug"
        }
        _ => {
            // -vvv and above: show trace for everything
            "trace"
        }
    };
    
    std::env::set_var("RUST_LOG", log_config);
    
    // Configure env_logger with or without timestamps
    if args.no_timestamp {
        env_logger::Builder::from_default_env()
            .format_timestamp(None)
            .init();
    } else {
        env_logger::init();
    }

    // Validate configuration
    if let Err(e) = config.validate() {
        eprintln!("❌ Configuration validation failed: {}", e);
        std::process::exit(1);
    }

    // Build server from configuration
    let builder = ServerBuilder::new().from_config(config.clone());

    let server = match builder.build() {
        Ok(server) => server,
        Err(e) => {
            eprintln!("Error building server: {}", e);
            std::process::exit(1);
        }
    };

    println!("🚀 Starting Circles WebSocket Server");
    println!("📋 Configuration:");
    println!("   Host: {}", config.host);
    println!("   Port: {}", config.port);
    println!("   Redis URL: {}", config.redis_url);
    if let Some(tls_port) = config.tls_port {
        println!("   TLS Port: {}", tls_port);
    }
    println!("   Authentication: {}", if config.auth { "ENABLED" } else { "DISABLED" });
    println!("   TLS/WSS: {}", if config.tls { "ENABLED" } else { "DISABLED" });
    println!("   Webhooks: {}", if config.webhooks { "ENABLED" } else { "DISABLED" });
    println!("   Circles configured: {}", config.circles.len());
    
    if config.tls {
        if let (Some(cert), Some(key)) = (&config.cert, &config.key) {
            println!("   Certificate: {}", cert);
            println!("   Private Key: {}", key);
        }
    }
    
    if config.webhooks {
        println!("   Webhook secrets loaded from environment variables:");
        println!("     - STRIPE_WEBHOOK_SECRET");
        println!("     - IDENFY_WEBHOOK_SECRET");
    }
    
    if config.auth && !config.circles.is_empty() {
        println!("   Configured circles:");
        for (circle_name, members) in &config.circles {
            println!("     - {}: {} members", circle_name, members.len());
        }
    }
    println!();

    let (server_task, _server_handle) = server.spawn_circle_server()?;
    server_task.await?
}