#![allow(dead_code)]

use actix_cors::Cors;
use actix_web::middleware::Logger;
use actix_web::{web, App, HttpServer};
use dotenvy::dotenv;
use log::info;
use std::sync::{Arc, Mutex};

mod auth;
mod automation;
mod basic;
mod bot;
mod channels;
mod config;
mod context;
#[cfg(feature = "email")]
mod email;
mod file;
mod llm;
mod llm_legacy;
mod org;
mod session;
mod shared;
mod tools;
mod whatsapp;

use crate::bot::{
    create_session, get_session_history, get_sessions, index, set_mode_handler, static_files,
    voice_start, voice_stop, websocket_handler, whatsapp_webhook, whatsapp_webhook_verify,
};
use crate::channels::{VoiceAdapter, WebChannelAdapter};
use crate::config::AppConfig;
#[cfg(feature = "email")]
use crate::email::{
    get_emails, get_latest_email_from, list_emails, save_click, save_draft, send_email,
};
use crate::file::upload_file;
use crate::llm_legacy::llm_local::{
    chat_completions_local, embeddings_local, ensure_llama_servers_running,
};
use crate::shared::state::AppState;
use crate::whatsapp::WhatsAppAdapter;

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    dotenv().ok();
    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();

    info!("Starting General Bots 6.0...");

    // Load configuration and wrap it in an Arc for safe sharing across threads/closures
    let cfg = AppConfig::from_env();
    let config = std::sync::Arc::new(cfg.clone());

    // Main database connection pool
    let db_pool = match diesel::Connection::establish(&cfg.database_url()) {
        Ok(conn) => {
            info!("Connected to main database");
            Arc::new(Mutex::new(conn))
        }
        Err(e) => {
            log::error!("Failed to connect to main database: {}", e);
            return Err(std::io::Error::new(
                std::io::ErrorKind::ConnectionRefused,
                format!("Database connection failed: {}", e),
            ));
        }
    };

    // Build custom database URL from config members
    let custom_db_url = format!(
        "postgres://{}:{}@{}:{}/{}",
        cfg.database_custom.username,
        cfg.database_custom.password,
        cfg.database_custom.server,
        cfg.database_custom.port,
        cfg.database_custom.database
    );

    // Custom database connection pool
    let db_custom_pool = match diesel::Connection::establish(&custom_db_url) {
        Ok(conn) => {
            info!("Connected to custom database using constructed URL");
            Arc::new(Mutex::new(conn))
        }
        Err(e2) => {
            log::error!("Failed to connect to custom database: {}", e2);
            return Err(std::io::Error::new(
                std::io::ErrorKind::ConnectionRefused,
                format!("Custom Database connection failed: {}", e2),
            ));
        }
    };

    // Ensure local LLM servers are running
    ensure_llama_servers_running()
        .await
        .expect("Failed to initialize LLM local server.");

    // Optional Redis client
    let redis_client = match redis::Client::open("redis://127.0.0.1/") {
        Ok(client) => {
            info!("Connected to Redis");
            Some(Arc::new(client))
        }
        Err(e) => {
            log::warn!("Failed to connect to Redis: {}", e);
            None
        }
    };

    // Shared utilities
    let tool_manager = Arc::new(tools::ToolManager::new());
    let llm_provider = Arc::new(llm::MockLLMProvider::new());

    let web_adapter = Arc::new(WebChannelAdapter::new());
    let voice_adapter = Arc::new(VoiceAdapter::new(
        "https://livekit.example.com".to_string(),
        "api_key".to_string(),
        "api_secret".to_string(),
    ));

    let whatsapp_adapter = Arc::new(WhatsAppAdapter::new(
        "whatsapp_token".to_string(),
        "phone_number_id".to_string(),
        "verify_token".to_string(),
    ));

    let tool_api = Arc::new(tools::ToolApi::new());

    // Prepare the base AppState (without the orchestrator, which requires per‑worker construction)
    let base_app_state = AppState {
        s3_client: None,
        config: Some(cfg.clone()),
        conn: db_pool.clone(),
        custom_conn: db_custom_pool.clone(),
        redis_client: redis_client.clone(),
        orchestrator: Arc::new(bot::BotOrchestrator::new(
            // Temporary placeholder – will be replaced per worker
            session::SessionManager::new(
                diesel::Connection::establish(&cfg.database_url()).unwrap(),
                redis_client.clone(),
            ),
            (*tool_manager).clone(),
            llm_provider.clone(),
            auth::AuthService::new(
                diesel::Connection::establish(&cfg.database_url()).unwrap(),
                redis_client.clone(),
            ),
        )), // This placeholder will be shadowed inside the closure
        web_adapter,
        voice_adapter,
        whatsapp_adapter,
        tool_api,
    };

    info!(
        "Starting server on {}:{}",
        config.server.host, config.server.port
    );

    // Clone the Arc<AppConfig> for use inside the closure so the original `config`
    // remains available for binding later.
    let closure_config = config.clone();

    HttpServer::new(move || {
        // Clone again for this worker thread.
        let cfg = closure_config.clone();

        // Re‑create services that hold non‑Sync DB connections for each worker thread
        let auth_service = auth::AuthService::new(
            diesel::Connection::establish(&cfg.database_url()).unwrap(),
            redis_client.clone(),
        );
        let session_manager = session::SessionManager::new(
            diesel::Connection::establish(&cfg.database_url()).unwrap(),
            redis_client.clone(),
        );

        // Orchestrator for this worker
        let orchestrator = Arc::new(bot::BotOrchestrator::new(
            session_manager,
            (*tool_manager).clone(),
            llm_provider.clone(),
            auth_service,
        ));

        // Build the per‑worker AppState, cloning the shared resources
        let app_state = AppState {
            s3_client: base_app_state.s3_client.clone(),
            config: base_app_state.config.clone(),
            conn: base_app_state.conn.clone(),
            custom_conn: base_app_state.custom_conn.clone(),
            redis_client: base_app_state.redis_client.clone(),
            orchestrator,
            web_adapter: base_app_state.web_adapter.clone(),
            voice_adapter: base_app_state.voice_adapter.clone(),
            whatsapp_adapter: base_app_state.whatsapp_adapter.clone(),
            tool_api: base_app_state.tool_api.clone(),
        };

        let cors = Cors::default()
            .allow_any_origin()
            .allow_any_method()
            .allow_any_header()
            .max_age(3600);

        let app_state_clone = app_state.clone();

        let mut app = App::new()
            .wrap(cors)
            .wrap(Logger::default())
            .wrap(Logger::new("HTTP REQUEST: %a %{User-Agent}i"))
            .app_data(web::Data::new(app_state_clone));

        app = app
            .service(upload_file)
            .service(index)
            .service(static_files)
            .service(websocket_handler)
            .service(whatsapp_webhook_verify)
            .service(whatsapp_webhook)
            .service(voice_start)
            .service(voice_stop)
            .service(create_session)
            .service(get_sessions)
            .service(get_session_history)
            .service(set_mode_handler)
            .service(chat_completions_local)
            .service(embeddings_local);

        #[cfg(feature = "email")]
        {
            app = app
                .service(get_latest_email_from)
                .service(get_emails)
                .service(list_emails)
                .service(send_email)
                .service(save_draft)
                .service(save_click);
        }

        app
    })
    .bind((config.server.host.clone(), config.server.port))?
    .run()
    .await
}