use actix::Actor;
use actix_cors::Cors;
use actix_identity::config::LogoutBehaviour;
use actix_identity::IdentityMiddleware;
use actix_multipart::form::tempfile::TempFileConfig;
use actix_multipart::form::MultipartFormConfig;
use actix_remote_ip::RemoteIPConfig;
use actix_session::storage::CookieSessionStore;
use actix_session::SessionMiddleware;
use actix_web::cookie::{Key, SameSite};
use actix_web::http::header;
use actix_web::middleware::Logger;
use actix_web::web::Data;
use actix_web::{web, App, HttpServer};
use light_openid::basic_state_manager::BasicStateManager;
use std::time::Duration;
use virtweb_backend::actors::libvirt_actor::LibVirtActor;
use virtweb_backend::actors::vnc_tokens_actor::VNCTokensManager;
use virtweb_backend::app_config::AppConfig;
use virtweb_backend::constants;
use virtweb_backend::constants::{
    MAX_INACTIVITY_DURATION, MAX_SESSION_DURATION, SESSION_COOKIE_NAME,
};
use virtweb_backend::controllers::{
    api_tokens_controller, auth_controller, groups_controller, iso_controller, network_controller,
    nwfilter_controller, server_controller, static_controller, vm_controller,
};
use virtweb_backend::libvirt_client::LibVirtClient;
use virtweb_backend::middlewares::auth_middleware::AuthChecker;
use virtweb_backend::nat::nat_conf_mode;
use virtweb_backend::utils::files_utils;

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));

    // Run in NAT configuration mode, if requested
    if std::env::var(constants::NAT_MODE_ENV_VAR_NAME).is_ok() {
        nat_conf_mode::sub_main().await.unwrap();
        return Ok(());
    }

    // Load additional config from file, if requested
    AppConfig::parse_env_file().unwrap();

    log::debug!("Create required directory, if missing");
    files_utils::create_directory_if_missing(AppConfig::get().iso_storage_path()).unwrap();
    files_utils::create_directory_if_missing(AppConfig::get().vnc_sockets_path()).unwrap();
    files_utils::set_file_permission(AppConfig::get().vnc_sockets_path(), 0o777).unwrap();
    files_utils::create_directory_if_missing(AppConfig::get().disks_storage_path()).unwrap();
    files_utils::create_directory_if_missing(AppConfig::get().nat_path()).unwrap();
    files_utils::create_directory_if_missing(AppConfig::get().definitions_path()).unwrap();
    files_utils::create_directory_if_missing(AppConfig::get().api_tokens_path()).unwrap();

    let conn = Data::new(LibVirtClient(
        LibVirtActor::connect()
            .await
            .expect("Failed to connect to hypervisor!")
            .start(),
    ));

    let vnc_tokens = Data::new(VNCTokensManager::start());

    log::info!("Start to listen on {}", AppConfig::get().listen_address);

    let state_manager = Data::new(BasicStateManager::new());

    HttpServer::new(move || {
        let session_mw = SessionMiddleware::builder(
            CookieSessionStore::default(),
            Key::from(AppConfig::get().secret().as_bytes()),
        )
        .cookie_name(SESSION_COOKIE_NAME.to_string())
        .cookie_secure(AppConfig::get().cookie_secure)
        .cookie_same_site(SameSite::Strict)
        .cookie_domain(AppConfig::get().cookie_domain())
        .cookie_http_only(true)
        .build();

        let identity_middleware = IdentityMiddleware::builder()
            .logout_behaviour(LogoutBehaviour::PurgeSession)
            .visit_deadline(Some(Duration::from_secs(MAX_INACTIVITY_DURATION)))
            .login_deadline(Some(Duration::from_secs(MAX_SESSION_DURATION)))
            .build();

        let mut cors = Cors::default()
            .allowed_origin(&AppConfig::get().website_origin)
            .allowed_methods(vec!["GET", "POST", "DELETE", "PUT", "PATCH"])
            .allowed_headers(vec![header::AUTHORIZATION, header::ACCEPT])
            .allowed_header(header::CONTENT_TYPE)
            .supports_credentials()
            .max_age(3600);

        for additional_origin in &AppConfig::get().additional_origins {
            cors = cors.allowed_origin(additional_origin);
        }

        App::new()
            .wrap(Logger::default())
            .wrap(AuthChecker)
            .wrap(identity_middleware)
            .wrap(session_mw)
            .wrap(cors)
            .app_data(state_manager.clone())
            .app_data(vnc_tokens.clone())
            .app_data(Data::new(RemoteIPConfig {
                proxy: AppConfig::get().proxy_ip.clone(),
            }))
            .app_data(conn.clone())
            // Uploaded files
            .app_data(MultipartFormConfig::default().total_limit(constants::ISO_MAX_SIZE))
            .app_data(TempFileConfig::default().directory(&AppConfig::get().temp_dir))
            // Server controller
            .route(
                "/api/server/static_config",
                web::get().to(server_controller::static_config),
            )
            .route(
                "/api/server/info",
                web::get().to(server_controller::server_info),
            )
            .route(
                "/api/server/network_hook_status",
                web::get().to(server_controller::network_hook_status),
            )
            .route(
                "/api/server/number_vcpus",
                web::get().to(server_controller::number_vcpus),
            )
            .route(
                "/api/server/networks",
                web::get().to(server_controller::networks_list),
            )
            // Auth controller
            .route(
                "/api/auth/local",
                web::post().to(auth_controller::local_auth),
            )
            .route(
                "/api/auth/start_oidc",
                web::get().to(auth_controller::start_oidc),
            )
            .route(
                "/api/auth/finish_oidc",
                web::post().to(auth_controller::finish_oidc),
            )
            .route(
                "/api/auth/user",
                web::get().to(auth_controller::current_user),
            )
            .route(
                "/api/auth/sign_out",
                web::get().to(auth_controller::sign_out),
            )
            // ISO controller
            .route(
                "/api/iso/upload",
                web::post().to(iso_controller::upload_file),
            )
            .route(
                "/api/iso/upload_from_url",
                web::post().to(iso_controller::upload_from_url),
            )
            .route("/api/iso/list", web::get().to(iso_controller::get_list))
            .route(
                "/api/iso/{filename}",
                web::get().to(iso_controller::download_file),
            )
            .route(
                "/api/iso/{filename}",
                web::delete().to(iso_controller::delete_file),
            )
            // Virtual machines controller
            .route("/api/vm/create", web::post().to(vm_controller::create))
            .route("/api/vm/list", web::get().to(vm_controller::list_all))
            .route("/api/vm/{uid}", web::get().to(vm_controller::get_single))
            .route(
                "/api/vm/{uid}/src",
                web::get().to(vm_controller::get_single_src_def),
            )
            .route(
                "/api/vm/{uid}/autostart",
                web::get().to(vm_controller::get_autostart),
            )
            .route(
                "/api/vm/{uid}/autostart",
                web::put().to(vm_controller::set_autostart),
            )
            .route("/api/vm/{uid}", web::put().to(vm_controller::update))
            .route("/api/vm/{uid}", web::delete().to(vm_controller::delete))
            .route("/api/vm/{uid}/start", web::get().to(vm_controller::start))
            .route(
                "/api/vm/{uid}/shutdown",
                web::get().to(vm_controller::shutdown),
            )
            .route("/api/vm/{uid}/kill", web::get().to(vm_controller::kill))
            .route("/api/vm/{uid}/reset", web::get().to(vm_controller::reset))
            .route(
                "/api/vm/{uid}/suspend",
                web::get().to(vm_controller::suspend),
            )
            .route("/api/vm/{uid}/resume", web::get().to(vm_controller::resume))
            .route("/api/vm/{uid}/state", web::get().to(vm_controller::state))
            .route(
                "/api/vm/{uid}/screenshot",
                web::get().to(vm_controller::screenshot),
            )
            .route(
                "/api/vm/{uid}/vnc_token",
                web::get().to(vm_controller::vnc_token),
            )
            .route("/api/vnc", web::get().to(vm_controller::vnc))
            // Groups controller
            .route("/api/group/list", web::get().to(groups_controller::list))
            // Network controller
            .route(
                "/api/network/create",
                web::post().to(network_controller::create),
            )
            .route("/api/network/list", web::get().to(network_controller::list))
            .route(
                "/api/network/{uid}",
                web::get().to(network_controller::get_single),
            )
            .route(
                "/api/network/{uid}/src",
                web::get().to(network_controller::single_src),
            )
            .route(
                "/api/network/{uid}",
                web::put().to(network_controller::update),
            )
            .route(
                "/api/network/{uid}",
                web::delete().to(network_controller::delete),
            )
            .route(
                "/api/network/{uid}/autostart",
                web::get().to(network_controller::get_autostart),
            )
            .route(
                "/api/network/{uid}/autostart",
                web::put().to(network_controller::set_autostart),
            )
            .route(
                "/api/network/{uid}/status",
                web::get().to(network_controller::status),
            )
            .route(
                "/api/network/{uid}/start",
                web::get().to(network_controller::start),
            )
            .route(
                "/api/network/{uid}/stop",
                web::get().to(network_controller::stop),
            )
            // Network filters controller
            .route(
                "/api/nwfilter/create",
                web::post().to(nwfilter_controller::create),
            )
            .route(
                "/api/nwfilter/list",
                web::get().to(nwfilter_controller::list),
            )
            .route(
                "/api/nwfilter/{uid}",
                web::get().to(nwfilter_controller::get_single),
            )
            .route(
                "/api/nwfilter/{uid}/src",
                web::get().to(nwfilter_controller::single_src),
            )
            .route(
                "/api/nwfilter/{uid}",
                web::put().to(nwfilter_controller::update),
            )
            .route(
                "/api/nwfilter/{uid}",
                web::delete().to(nwfilter_controller::delete),
            )
            // API tokens controller
            .route(
                "/api/token/create",
                web::post().to(api_tokens_controller::create),
            )
            .route(
                "/api/token/list",
                web::get().to(api_tokens_controller::list),
            )
            .route(
                "/api/token/{uid}",
                web::get().to(api_tokens_controller::get_single),
            )
            .route(
                "/api/token/{uid}",
                web::patch().to(api_tokens_controller::update),
            )
            .route(
                "/api/token/{uid}",
                web::delete().to(api_tokens_controller::delete),
            )
            // Static assets
            .route("/", web::get().to(static_controller::root_index))
            .route(
                "/{tail:.*}",
                web::get().to(static_controller::serve_static_content),
            )
    })
    .bind(&AppConfig::get().listen_address)?
    .run()
    .await
}