use std::sync::Arc;
use std::sync::atomic::{AtomicBool, Ordering};
use std::time::Duration;
use actix_web::{web, App, HttpResponse, HttpServer, Responder, post, get};
use tokio::sync::Mutex;
use tracing::{info};
use global::cci::CentralControlInfo;

#[derive(Clone)]
struct Arcs {
    running: Arc<AtomicBool>,
    cci_cache_arc: Arc<Mutex<CentralControlInfo>>
}

// 句柄 GET 请求
#[get("/account")]
async fn get_account(arcs: web::Data<Arcs>) -> impl Responder {
    // --------------------------------数据解锁处理--------------------------------
    let cci = arcs.cci_cache_arc.lock().await;

    // --------------------------------回报--------------------------------
    let json_string = serde_json::to_string(&(cci.clone())).unwrap();
    HttpResponse::Ok().content_type("application/json").body(json_string)
}

// 句柄 POST 请求
#[post("/exit")]
async fn on_change(arcs: web::Data<Arcs>) -> impl Responder {
    arcs.running.store(false, Ordering::Relaxed);
    HttpResponse::Ok().body("程序已收到退出信号，将在清退仓位后退出。".to_string())
}

pub fn run_cci_cache(cci_arc: Arc<Mutex<CentralControlInfo>>) -> Arc<Mutex<CentralControlInfo>> {
    // cci缓存，防止中控因等待时间过长杀死rust
    let cci_cache = CentralControlInfo {
        now_balance: Default::default(),
        unrealized_pn_l: Default::default(),
        pos: Default::default(),
        entry_price: Default::default(),
        now_price: Default::default(),
    };
    let cci_cache_arc = Arc::new(Mutex::new(cci_cache));
    let cci_cache_arc_clone = cci_cache_arc.clone();
    tokio::spawn(async move {
        loop {
            tokio::time::sleep(Duration::from_secs(1)).await;

            let cci = cci_arc.lock().await;
            {
                let cci_cache = cci_cache_arc_clone.lock().await;
                cci_cache.now_price = cci.now_price;
                cci_cache.pos = cci.pos;
                cci_cache.unrealized_pn_l = cci.unrealized_pn_l;
                cci_cache.now_balance = cci.now_balance;
                cci_cache.entry_price = cci.entry_price;
            }
        }
    });

    return cci_cache_arc;
}

pub fn run_server(port: u32, running: Arc<AtomicBool>, cci_arc: Arc<Mutex<CentralControlInfo>>) {
    let addr = format!("0.0.0.0:{}", port);
    info!("中控绑定地址：{}", addr);

    // 启动server
    let arcs = Arcs {
        running: running.clone(),
        cci_cache_arc: run_cci_cache(cci_arc),
    };

    let server_fut = HttpServer::new(move || {
        let arcs_clone = arcs.clone();

        App::new()
            .app_data(web::Data::new(arcs_clone))
            .service(get_account)
            .service(on_change)
    })
    .bind(addr)
    .expect("Bind port error")
    .run();

    info!("中控服务已运行。");

    let r = running.clone();
    tokio::spawn(async move {
        server_fut.await.expect("error running the server");
        r.store(false, Ordering::Relaxed);
    });
}