use core::time::Duration;
use std::sync::Arc;

use actix::Actor;
use actix_identity::config::LogoutBehaviour;
use actix_identity::IdentityMiddleware;
use actix_session::SessionMiddleware;
use actix_session::storage::CookieSessionStore;
use actix_web::{App, get, HttpResponse, HttpServer, middleware, web};
use actix_web::cookie::{Key, SameSite};
use actix_web::middleware::Logger;
use clap::Parser;

use basic_oidc::actors::bruteforce_actor::BruteForceActor;
use basic_oidc::actors::openid_sessions_actor::OpenIDSessionsActor;
use basic_oidc::actors::users_actor::UsersActor;
use basic_oidc::constants::*;
use basic_oidc::controllers::*;
use basic_oidc::controllers::assets_controller::assets_route;
use basic_oidc::data::app_config::AppConfig;
use basic_oidc::data::client::ClientManager;
use basic_oidc::data::entity_manager::EntityManager;
use basic_oidc::data::jwt_signer::JWTSigner;
use basic_oidc::data::user::{hash_password, User};
use basic_oidc::data::webauthn_manager::WebAuthManager;
use basic_oidc::middlewares::auth_middleware::AuthMiddleware;

#[get("/health")]
async fn health() -> &'static str {
    "Running"
}

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

    let mut config: AppConfig = AppConfig::parse();

    // In debug mode only, use dummy token
    if cfg!(debug_assertions) && config.token_key.is_empty() {
        config.token_key = String::from_utf8_lossy(&[32; 64]).to_string();
    }

    if !config.storage_path().exists() {
        log::error!(
            "Specified storage path {:?} does not exists!",
            config.storage_path()
        );
        panic!()
    }

    let mut users = EntityManager::<User>::open_or_create(config.users_file())
        .expect("Failed to load users list!");

    // Create initial user if required
    if users.is_empty() {
        log::info!("Create default {} user", DEFAULT_ADMIN_USERNAME);
        let default_admin = User {
            username: DEFAULT_ADMIN_USERNAME.to_string(),
            password: hash_password(DEFAULT_ADMIN_PASSWORD).unwrap(),
            need_reset_password: true,
            authorized_clients: None,
            admin: true,
            ..Default::default()
        };

        users
            .insert(default_admin)
            .expect("Failed to create initial user!");
    }

    let users_actor = UsersActor::new(users).start();
    let bruteforce_actor = BruteForceActor::default().start();
    let openid_sessions_actor = OpenIDSessionsActor::default().start();
    let jwt_signer = JWTSigner::gen_from_memory()
        .expect("Failed to generate JWKS key");
    let webauthn_manager = Arc::new(WebAuthManager::init(&config));

    log::info!("Server will listen on {}", config.listen_address);
    let listen_address = config.listen_address.to_string();

    HttpServer::new(move || {
        let mut clients = ClientManager::open_or_create(config.clients_file())
            .expect("Failed to load clients list!");
        clients.apply_environment_variables();

        let session_mw =
            SessionMiddleware::builder(CookieSessionStore::default(),
                                       Key::from(config.token_key.as_bytes()))
                .cookie_name(SESSION_COOKIE_NAME.to_string())
                .cookie_secure(config.secure_cookie())
                .cookie_same_site(SameSite::Lax)
                .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();

        App::new()
            .app_data(web::Data::new(users_actor.clone()))
            .app_data(web::Data::new(bruteforce_actor.clone()))
            .app_data(web::Data::new(openid_sessions_actor.clone()))
            .app_data(web::Data::new(config.clone()))
            .app_data(web::Data::new(clients))
            .app_data(web::Data::new(jwt_signer.clone()))
            .app_data(web::Data::new(webauthn_manager.clone()))

            .wrap(middleware::DefaultHeaders::new()
                .add(("Permissions-Policy", "interest-cohort=()")))
            .wrap(Logger::default())
            .wrap(AuthMiddleware {})
            .wrap(identity_middleware)
            .wrap(session_mw)

            // main route
            .route("/", web::get()
                .to(|| async { HttpResponse::Found().append_header(("Location", "/settings")).finish() }))
            .route("/robots.txt", web::get().to(assets_controller::robots_txt))

            // health route
            .service(health)

            // Assets serving
            .route("/assets/{path:.*}", web::get().to(assets_route))

            // Login pages
            .route("/logout", web::get().to(login_controller::logout_route))
            .route("/login", web::get().to(login_controller::login_route))
            .route("/login", web::post().to(login_controller::login_route))
            .route("/reset_password", web::get().to(login_controller::reset_password_route))
            .route("/reset_password", web::post().to(login_controller::reset_password_route))
            .route("/2fa_auth", web::get().to(login_controller::choose_2fa_method))
            .route("/2fa_otp", web::get().to(login_controller::login_with_otp))
            .route("/2fa_otp", web::post().to(login_controller::login_with_otp))
            .route("/2fa_webauthn", web::get().to(login_controller::login_with_webauthn))

            // Login api
            .route("/login/api/auth_webauthn", web::post().to(login_api::auth_webauthn))

            // Settings routes
            .route("/settings", web::get().to(settings_controller::account_settings_details_route))
            .route("/settings/change_password", web::get().to(settings_controller::change_password_route))
            .route("/settings/change_password", web::post().to(settings_controller::change_password_route))
            .route("/settings/two_factors", web::get().to(two_factors_controller::two_factors_route))
            .route("/settings/two_factors/add_totp", web::get().to(two_factors_controller::add_totp_factor_route))
            .route("/settings/two_factors/add_webauthn", web::get().to(two_factors_controller::add_webauthn_factor_route))

            // User API
            .route("/settings/api/two_factor/save_totp_factor", web::post().to(two_factor_api::save_totp_factor))
            .route("/settings/api/two_factor/save_webauthn_factor", web::post().to(two_factor_api::save_webauthn_factor))
            .route("/settings/api/two_factor/delete_factor", web::post().to(two_factor_api::delete_factor))

            // Admin routes
            .route("/admin", web::get()
                .to(|| async { HttpResponse::Found().append_header(("Location", "/settings")).finish() }))
            .route("/admin/clients", web::get().to(admin_controller::clients_route))
            .route("/admin/users", web::get().to(admin_controller::users_route))
            .route("/admin/users", web::post().to(admin_controller::users_route))
            .route("/admin/create_user", web::get().to(admin_controller::create_user))
            .route("/admin/edit_user", web::get().to(admin_controller::edit_user))

            // Admin API
            .route("/admin/api/find_username", web::post().to(admin_api::find_username))
            .route("/admin/api/delete_user", web::post().to(admin_api::delete_user))

            // OpenID routes
            .route("/.well-known/openid-configuration", web::get().to(openid_controller::get_configuration))
            .route(AUTHORIZE_URI, web::get().to(openid_controller::authorize))
            .route(TOKEN_URI, web::post().to(openid_controller::token))
            .route(CERT_URI, web::get().to(openid_controller::cert_uri))
            .route(USERINFO_URI, web::post().to(openid_controller::user_info_post))
            .route(USERINFO_URI, web::get().to(openid_controller::user_info_get))
    })
        .bind(listen_address)?
        .run()
        .await
}