use std::sync::Arc;
use std::sync::atomic::AtomicBool;
use std::time::Duration;
use chrono::Utc;

use futures_channel::mpsc::{UnboundedReceiver, UnboundedSender};
use hex;
use hmac::{Hmac, Mac, NewMac};
use serde_json::{json, Value};
use sha2::Sha512;
use tokio::sync::Mutex;
use tokio_tungstenite::tungstenite::{Error, Message};
use tracing::{error, info, trace};

use crate::response_base::ResponseData;
use crate::socket_tool::{AbstractWsMode, HeartbeatType};

//类型
pub enum GateSwapWsType {
    PublicAndPrivate(String),
}


//订阅频道
#[derive(Clone)]
pub enum GateSwapSubscribeType {
    PuFuturesOrderBook,
    PuFuturesCandlesticks,
    PuFuturesTrades,
    PuFuturesBookTicker,

    PrFuturesOrders(String),
    PrFuturesPositions(String),
    PrFuturesBalances(String),
}

//账号信息
#[derive(Clone)]
#[allow(dead_code)]
pub struct GateSwapLogin {
    pub api_key: String,
    pub secret: String,
}


#[derive(Clone)]
pub struct GateSwapWs {
    //类型
    label: String,
    //地址
    address_url: String,
    //账号信息
    login_param: Option<GateSwapLogin>,
    //币对
    symbol_s: Vec<String>,
    //订阅
    subscribe_types: Vec<GateSwapSubscribeType>,
    //心跳间隔
    heartbeat_time: u64,
}

impl GateSwapWs {
    /*******************************************************************************************************/
    /*****************************************获取一个对象****************************************************/
    /*******************************************************************************************************/
    pub fn new(is_colo: bool, login_param: Option<GateSwapLogin>, ws_type: GateSwapWsType) -> GateSwapWs {
        return GateSwapWs::new_label("default-GateSwapWs".to_string(), is_colo, login_param, ws_type);
    }
    pub fn new_label(label: String, is_colo: bool, login_param: Option<GateSwapLogin>, ws_type: GateSwapWsType) -> GateSwapWs
    {
        /*******公共频道-私有频道数据组装*/
        let address_url = match ws_type {
            GateSwapWsType::PublicAndPrivate(name) => {
                if is_colo {
                    let url = format!("wss://fxws-private.gateapi.io/v4/ws/{}", name.to_string());
                    info!("开启高速通道:{:?}",url);
                    url
                } else {
                    let url = format!("wss://fx-ws.gateio.ws/v4/ws/{}", name.to_string());
                    info!("走普通通道：{}",url);
                    url
                }
            }
        };


        GateSwapWs {
            label,
            address_url,
            login_param,
            symbol_s: vec![],
            subscribe_types: vec![],
            heartbeat_time: 1000 * 10,
        }
    }

    /*******************************************************************************************************/
    /*****************************************订阅函数********************************************************/
    /*******************************************************************************************************/
    //手动添加订阅信息
    pub fn set_subscribe(&mut self, subscribe_types: Vec<GateSwapSubscribeType>) {
        self.subscribe_types.extend(subscribe_types);
    }
    //手动添加币对
    pub fn set_symbols(&mut self, mut b_array: Vec<String>) {
        for symbol in b_array.iter_mut() {
            // 大写
            *symbol = symbol.to_uppercase();
            // 字符串替换
            *symbol = symbol.replace("-", "_");
        }
        self.symbol_s = b_array;
    }
    //频道是否需要登录
    fn contains_pr(&self) -> bool {
        for t in self.subscribe_types.clone() {
            if match t {
                GateSwapSubscribeType::PuFuturesOrderBook => false,
                GateSwapSubscribeType::PuFuturesCandlesticks => false,
                GateSwapSubscribeType::PuFuturesTrades => false,
                GateSwapSubscribeType::PuFuturesBookTicker => false,

                GateSwapSubscribeType::PrFuturesOrders(_) => true,
                GateSwapSubscribeType::PrFuturesPositions(_) => true,
                GateSwapSubscribeType::PrFuturesBalances(_) => true,
            } {
                return true;
            }
        }
        false
    }

    /*******************************************************************************************************/
    /*****************************************工具函数********************************************************/
    /*******************************************************************************************************/
    //订阅枚举解析
    pub fn enum_to_string(symbol: String, subscribe_type: GateSwapSubscribeType, login_param: Option<GateSwapLogin>) -> Value {
        let time = chrono::Utc::now().timestamp();
        let mut access_key = "".to_string();
        let mut secret_key = "".to_string();
        match login_param {
            None => {}
            Some(param) => {
                access_key = param.api_key.clone();
                secret_key = param.secret.clone();
            }
        }

        match subscribe_type {
            GateSwapSubscribeType::PuFuturesOrderBook => {
                json!({
                    "time": time,
                    "channel": "futures.order_book",
                    "event": "subscribe",
                    "payload": [symbol, "20", "0"]
                })
            }
            GateSwapSubscribeType::PuFuturesBookTicker => {
                json!({
                    "time": time,
                    "channel": "futures.book_ticker",
                    "event": "subscribe",
                    "payload": [symbol]
                })
            }
            GateSwapSubscribeType::PuFuturesCandlesticks => {
                json!({
                    "time": time,
                    "channel": "futures.candlesticks",
                    "event": "subscribe",
                    "payload":  ["1m", symbol]
                })
            }
            GateSwapSubscribeType::PrFuturesOrders(user_id) => {
                json!({
                    "time": time,
                    "channel": "futures.orders",
                    "event": "subscribe",
                    "payload": [user_id, symbol],
                    "auth": {
                        "method": "api_key",
                        "KEY": access_key,
                        "SIGN":Self::sign(secret_key.to_string(),
                              "futures.orders".to_string(),
                              "subscribe".to_string(),
                              time.to_string())
                    }
                })
            }
            GateSwapSubscribeType::PrFuturesPositions(user_id) => {
                json!({
                    "time": time,
                    "channel": "futures.positions",
                    "event": "subscribe",
                    "payload": [user_id, symbol],
                    "auth": {
                        "method": "api_key",
                        "KEY": access_key,
                        "SIGN":Self::sign(secret_key.to_string(),
                              "futures.positions".to_string(),
                              "subscribe".to_string(),
                              time.to_string())
                    }
                })
            }
            GateSwapSubscribeType::PrFuturesBalances(user_id) => {
                json!({
                    "time": time,
                    "channel": "futures.balances",
                    "event": "subscribe",
                    "payload": [user_id],
                    "auth": {
                        "method": "api_key",
                        "KEY": access_key,
                        "SIGN":Self::sign(secret_key.to_string(),
                              "futures.balances".to_string(),
                              "subscribe".to_string(),
                              time.to_string())
                    }
                })
            }
            GateSwapSubscribeType::PuFuturesTrades => {
                json!({
                    "time": time,
                    "channel": "futures.trades",
                    "event": "subscribe",
                    "payload": [symbol]
                })
            }
        }
    }
    //订阅信息生成
    pub fn get_subscription(&self) -> Vec<Value> {
        let mut args = vec![];
        for symbol in &self.symbol_s {
            for subscribe_type in &self.subscribe_types {
                let ty_str = Self::enum_to_string(symbol.clone(),
                                                  subscribe_type.clone(),
                                                  self.login_param.clone(),
                );
                args.push(ty_str);
            }
        }
        args
    }
    //生成签名
    fn sign(secret_key: String, channel: String, event: String, time: String) -> String {
        let message = format!("channel={}&event={}&time={}", channel, event, time);
        let mut mac = Hmac::<Sha512>::new_varkey(secret_key.as_bytes()).expect("Failed to create HMAC");
        mac.update(message.as_bytes());
        let result = mac.finalize().into_bytes();
        let sign = hex::encode(result);
        sign
    }
    /*******************************************************************************************************/
    /*****************************************socket基本*****************************************************/
    /*******************************************************************************************************/
    //链接
    pub async fn ws_connect_async<F, Future>(&mut self,
                                             is_shutdown_arc: Arc<AtomicBool>,
                                             handle_function: F,
                                             write_tx_am: &Arc<Mutex<UnboundedSender<Message>>>,
                                             write_to_socket_rx: UnboundedReceiver<Message>) -> Result<(), Error>
        where
            F: Fn(ResponseData) -> Future + Clone + Send + 'static + Sync,
            Future: std::future::Future<Output=()> + Send + 'static, // 确保 Fut 是一个 Future，且输出类型为 ()
    {
        let login_is = self.contains_pr();
        let subscription = self.get_subscription();
        let address_url = self.address_url.clone();
        let label = self.label.clone();
        let heartbeat_time = self.heartbeat_time.clone();
        let timestamp = Utc::now().timestamp();

        //心跳-- 方法内部线程启动
        let write_tx_clone1 = Arc::clone(write_tx_am);
        tokio::spawn(async move {
            trace!("线程-异步心跳-开始");
            let ping_str = json!({
                "time" : timestamp,
                "channel" : "futures.ping",
            });
            AbstractWsMode::ping_or_pong(write_tx_clone1, HeartbeatType::Custom(ping_str.to_string()), heartbeat_time).await;
            trace!("线程-异步心跳-结束");
        });

        //设置订阅
        let mut subscribe_array = vec![];
        if login_is {
            //登录相关
        }
        for s in subscription {
            subscribe_array.push(s.to_string());
        }

        //链接
        let t2 = tokio::spawn(async move {
            let write_to_socket_rx_arc = Arc::new(Mutex::new(write_to_socket_rx));

            loop {
                info!("gate_usdt_swap socket 连接中……");

                AbstractWsMode::ws_connect_async(is_shutdown_arc.clone(), handle_function.clone(), address_url.clone(),
                                                 false, label.clone(), subscribe_array.clone(), write_to_socket_rx_arc.clone(),
                                                 Self::message_text, Self::message_ping, Self::message_pong).await;

                error!("gate_usdt_swap socket 断连，1s以后重连……");
                tokio::time::sleep(Duration::from_secs(1)).await;
            }
        });
        tokio::try_join!(t2).unwrap();
        trace!("线程-心跳与链接-结束");

        Ok(())
    }
    /*******************************************************************************************************/
    /*****************************************数据解析*****************************************************/
    /*******************************************************************************************************/
    //数据解析-Text
    pub fn message_text(text: String) -> Option<ResponseData> {
        let response_data = Self::ok_text(text);
        Option::from(response_data)
    }
    //数据解析-ping
    pub fn message_ping(_pi: Vec<u8>) -> Option<ResponseData> {
        return Option::from(ResponseData::new("".to_string(), "-300".to_string(), "success".to_string(), Value::Null));
    }
    //数据解析-pong
    pub fn message_pong(_po: Vec<u8>) -> Option<ResponseData> {
        return Option::from(ResponseData::new("".to_string(), "-301".to_string(), "success".to_string(), Value::Null));
    }
    //数据解析
    pub fn ok_text(text: String) -> ResponseData
    {
        // trace!("原始数据：{}", text);
        let mut res_data = ResponseData::new("".to_string(), "200".to_string(), "success".to_string(), Value::Null);
        let json_value: Value = serde_json::from_str(&text).unwrap();

        if json_value["channel"].as_str() == Option::from("futures.pong") {
            res_data.code = "-301".to_string();
            res_data.message = "success".to_string();
        } else if json_value.get("error").is_some() {
            let message = json_value["error"]["message"].as_str().unwrap().to_string();
            let mes = message.trim_end_matches('\n');

            res_data.code = json_value["error"]["code"].to_string();
            res_data.message = mes.to_string();
        } else if json_value["result"]["status"].as_str() == Option::from("success") {//订阅返回
            res_data.code = "-201".to_string();
            res_data.data = json_value;
        } else {
            res_data.channel = format!("{}", json_value["channel"].as_str().unwrap());
            res_data.code = "200".to_string();
            res_data.data = json_value["result"].clone();
        }
        res_data
    }
}