use tokio::time::Instant;
use std::collections::{BTreeMap, HashMap};
use std::io::Error;
use std::sync::Arc;
use std::sync::atomic::{AtomicBool};
use std::time::Duration;
use chrono::{Utc};
use reqwest::header::{CONTENT_TYPE, HeaderMap, HeaderValue};
use rust_decimal::Decimal;
use rust_decimal_macros::dec;
use tokio::sync::mpsc::{Sender};
use tokio::sync::{Mutex};
use tokio::time::sleep;
use tracing::{error, info, warn};
use global::cci::CentralControlInfo;
use global::clear_position_result::ClearPositionResult;
use global::params::Params;
use global::trace_stack::TraceStack;
use standard::{Account, Market, Order, Platform, Position, PositionModeEnum, SpecialTicker};
use standard::exchange::{Exchange};
use standard::exchange::ExchangeEnum::{BinanceSwap, BitgetSwap, BybitSwap, CoinexSwap, GateSwap, HtxSwap, KucoinSwap};

use crate::model::{LocalPosition, OrderInfo};
use crate::predictor::Predictor;
use crate::strategy::Strategy;
use crate::utils;
use crate::utils::clip;


pub struct ClearCore {
    pub params: Params,
    // 启动时间
    pub start_time: i64,
    // 币对
    pub symbol: String,
    // 基础货币
    pub base: String,
    // 报价货币
    pub quote: String,
    //
    pub strategy: Strategy,
    // 本地挂单表
    pub local_orders: HashMap<String, OrderInfo>,
    // 本地订单缓存队列
    pub local_orders_backup: HashMap<String, OrderInfo>,
    // 本地订单缓存cid队列
    pub local_orders_backup_cid: Vec<String>,
    // 本地已处理cid缓存队列
    pub handled_orders_cid: Vec<String>,
    // 本地利润值
    pub local_profit: Decimal,
    // 本地U保证金
    pub local_cash: Decimal,
    // 本地币保证金
    pub local_coin: Decimal,
    // 仓位信息
    pub local_position: LocalPosition,
    // 仓位信息-来自订单
    pub local_position_by_orders: LocalPosition,
    //
    pub local_buy_amount: Decimal,
    pub local_sell_amount: Decimal,
    pub local_buy_value: Decimal,
    pub local_sell_value: Decimal,
    pub local_cancel_log: HashMap<String, i64>,
    pub interval: u64,
    pub exchange: String,
    pub exit_msg: String,
    // 仓位检查结果序列
    pub position_check_series: Vec<i8>,
    // 止损大小
    pub stop_loss: Decimal,
    // 资金使用率
    pub used_pct: Decimal,
    // 启停信号 0 表示运行 大于1开始倒计时 1时停机
    pub mode_signal: i8,
    // 交易盘口订单流更新时间
    pub trade_order_update_time: i64,
    // onTick触发时间记录
    pub on_tick_event_time: i64,
    // 盘口ticker信息
    pub tickers: HashMap<String, SpecialTicker>,
    // 盘口 depth信息
    pub depths: HashMap<String, Vec<Decimal>>,
    // 行情更新延迟监控(风控)
    pub market_update_time: HashMap<String, i64>,
    pub market_update_interval: HashMap<String, Decimal>,
    pub ref_num: i8,
    pub ref_name: Vec<String>,
    pub trade_name: String,
    pub ready: i8,
    pub predictor: Predictor,
    pub market: Market,
    pub platform_rest: Box<dyn Platform + Send + Sync>,
    // 市场最优买卖价
    pub max_buy_min_sell_cache: HashMap<String, Vec<Decimal>>,
    // 最近一次的depth信息
    pub local_depths: HashMap<String, Vec<Decimal>>,
    pub is_update: HashMap<String, bool>,
    pub running: Arc<AtomicBool>,
    pub hold_coin: Decimal,

    // 打印限频
    pub prev_log_ready_timestamp: i64,
    pub log_ready_log_interval: i64,

    // 中控
    pub cci_arc: Arc<Mutex<CentralControlInfo>>,            // 中控信息汇集

    // 老版的trader_msg留下来的
    pub agg_market: Vec<Decimal>,
    pub ref_price: Vec<Vec<Decimal>>,
    pub predict: Decimal,
}

impl ClearCore {
    pub async fn new(exchange: String,
                     params: Params,
                     exchange_params: BTreeMap<String, String>,
                     order_sender: Sender<Order>,
                     error_sender: Sender<Error>,
                     running: Arc<AtomicBool>,
                     cci_arc: Arc<Mutex<CentralControlInfo>>) -> ClearCore {
        let symbol = params.pair.clone();
        let pairs: Vec<&str> = params.pair.split('_').collect();
        let mut core_obj = ClearCore {
            params: params.clone(),
            start_time: 0,
            symbol: symbol.clone(),
            base: pairs[0].to_string(),
            quote: pairs[1].to_string(),
            // 现货底仓
            hold_coin: clip(params.hold_coin, Decimal::ZERO, Decimal::ONE_HUNDRED * Decimal::ONE_HUNDRED),
            strategy: Strategy::new(&params, true),
            local_orders: Default::default(),
            local_orders_backup: Default::default(),
            local_orders_backup_cid: Default::default(),
            handled_orders_cid: Default::default(),
            local_profit: Default::default(),
            local_cash: Default::default(),
            local_coin: Default::default(),
            local_position: LocalPosition {
                long_pos: Default::default(),
                short_pos: Default::default(),
                long_avg: Default::default(),
                short_avg: Default::default(),
            },
            local_position_by_orders: LocalPosition {
                long_pos: Default::default(),
                short_pos: Default::default(),
                long_avg: Default::default(),
                short_avg: Default::default(),
            },
            local_buy_amount: Default::default(),
            local_sell_amount: Default::default(),
            local_buy_value: Default::default(),
            local_sell_value: Default::default(),
            local_cancel_log: Default::default(),
            interval: params.interval,
            exchange: params.exchange,
            exit_msg: "正常退出".to_string(),
            position_check_series: Default::default(),
            stop_loss: params.stop_loss,
            used_pct: dec!(0.95),
            mode_signal: 0,
            trade_order_update_time: Utc::now().timestamp_millis(),
            on_tick_event_time: Utc::now().timestamp_millis(),
            tickers: Default::default(),
            depths: Default::default(),
            market_update_time: Default::default(),
            market_update_interval: Default::default(),
            ref_num: params.ref_exchange.len() as i8,
            ref_name: Default::default(),
            trade_name: "".to_string(),
            ready: 0,
            predictor: Predictor {
                loop_count: 0,
                market_info_list: vec![],
                mid_price_list: vec![],
                ref_mid_price_per_exchange_per_frame: vec![],
                ref_exchange_length: 0,
                data_length_max: 0,
                alpha: vec![],
                gamma: Default::default(),
                avg_spread_list: vec![],
            },
            market: Market {
                symbol: symbol.clone(),
                base_asset: "".to_string(),
                quote_asset: "".to_string(),
                tick_size: Default::default(),
                price_precision: Default::default(),
                amount_precision: Default::default(),
                min_qty: Default::default(),
                max_qty: Default::default(),
                min_notional: Default::default(),
                max_notional: Default::default(),
                ct_val: Default::default(),
                amount_size: Default::default(),
            },
            platform_rest: match exchange.as_str() {
                "kucoin_usdt_swap" => {
                    Exchange::new(KucoinSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                "gate_usdt_swap" => {
                    Exchange::new(GateSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                // "gate_usdt_spot" => {
                //     Exchange::new(GateSpot, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                // }
                "binance_usdt_swap" => {
                    Exchange::new(BinanceSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                // "binance_spot" => {
                //     Exchange::new(BinanceSpot, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                // }
                // "bitget_spot" => {
                //     Exchange::new(BitgetSpot, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                // }
                "bitget_usdt_swap" => {
                    Exchange::new(BitgetSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                // "okex_usdt_swap" => {
                //     Exchange::new(OkxSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                // }
                "bybit_usdt_swap" => {
                    Exchange::new(BybitSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                "coinex_usdt_swap" => {
                    Exchange::new(CoinexSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                "htx_usdt_swap" => {
                    Exchange::new(HtxSwap, symbol, params.colo != 0i8, exchange_params, order_sender, error_sender).await
                }
                _ => {
                    error!("203未找到对应的交易所rest枚举！");
                    panic!("203未找到对应的交易所rest枚举！");
                }
            },
            max_buy_min_sell_cache: Default::default(),
            local_depths: Default::default(),
            is_update: Default::default(),
            running,
            prev_log_ready_timestamp: 0,
            log_ready_log_interval: 10 * 1000,
            cci_arc,
            agg_market: vec![],
            ref_price: vec![],
            predict: Default::default(),
        };
        for i in 0..=params.ref_exchange.len() - 1 {
            // 拼接不会消耗原字符串
            let tickers_key: String = format!("{}{}{}{}", params.ref_exchange[i], "@", params.ref_pair[i], "@ref");
            let ref_name_element = tickers_key.clone();
            let depths_key: String = tickers_key.clone();
            let market_update_time_key = tickers_key.clone();
            let market_update_interval_key = tickers_key.clone();
            let max_buy_min_sell_cache_key = tickers_key.clone();

            core_obj.tickers.insert(tickers_key, SpecialTicker::new());
            core_obj.ref_name.push(ref_name_element);
            core_obj.depths.insert(depths_key, Default::default());
            core_obj.market_update_time.insert(market_update_time_key, Default::default());
            core_obj.market_update_interval.insert(market_update_interval_key, Default::default());
            core_obj.max_buy_min_sell_cache.insert(max_buy_min_sell_cache_key, vec![Decimal::ZERO, Decimal::ZERO]);
        }
        let name = format!("{}{}{}", core_obj.exchange.clone(), "@", core_obj.symbol);
        let market_update_time_key = name.clone();
        let market_update_interval_key = name.clone();
        let tickers_key = name.clone();
        let depths_key = name.clone();
        let max_buy_min_sell_cache_key = name.clone();
        core_obj.trade_name = name;
        core_obj.market_update_time.insert(market_update_time_key, Default::default());
        core_obj.market_update_interval.insert(market_update_interval_key, Default::default());
        core_obj.tickers.insert(tickers_key, SpecialTicker::new());
        core_obj.depths.insert(depths_key, Default::default());
        core_obj.max_buy_min_sell_cache.insert(max_buy_min_sell_cache_key, vec![Decimal::ZERO, Decimal::ZERO]);
        // broker.newWs
        let mut price_alpha: Vec<Decimal> = Vec::new();
        for ref_pair_str in params.ref_pair {
            if params.pair.contains("1000") && !ref_pair_str.contains("1000") {
                price_alpha.push(dec!(1000.0));
            } else if !params.pair.contains("1000") && ref_pair_str.contains("1000") {
                price_alpha.push(dec!(0.001))
            } else {
                price_alpha.push(dec!(1.0));
            }
        }
        info!("价格系数：{:?}", price_alpha);
        core_obj.predictor = Predictor::new(core_obj.ref_name.len())
            .alpha(price_alpha)
            .gamma(params.gamma);

        return core_obj;
    }

    pub fn log_ready_status(&mut self, msg: String) {
        // 隔一会再打印未准备就绪的台词
        let now_timestamp = Utc::now().timestamp_millis();
        if now_timestamp - self.prev_log_ready_timestamp > self.log_ready_log_interval {
            self.prev_log_ready_timestamp = now_timestamp;
            info!("{}", msg);
        }
    }


    // #[instrument(skip(self, data), level="TRACE")]
    pub async fn update_position(&mut self, data: Vec<Position>) {
        if data.is_empty() {
            return;
        }
        let mut position = LocalPosition::new();
        for pos in &data {
            if pos.position_mode == PositionModeEnum::Long {
                position.long_pos = pos.amount;
                position.long_avg = pos.price;
            } else if pos.position_mode == PositionModeEnum::Short {
                position.short_pos = pos.amount.abs();
                position.short_avg = pos.price;
            }
        }
        // 更新仓位信息
        if position != self.local_position {
            info!("收到新的仓位推送, position: {:?}", data);
            info!("更新本地仓位:{:?}", position);
            self.local_position = position;
        }

        // 更新中控持仓相关的信息
        {
            let mut pos = self.local_position_by_orders.long_pos - self.local_position_by_orders.short_pos;
            if !self.exchange.contains("spot") {
                pos = self.local_position.long_pos - self.local_position.short_pos;
            }
            pos.rescale(8);

            let mut entry_price;
            if pos.gt(&Decimal::ZERO) {
                entry_price = self.local_position_by_orders.long_avg;
            } else {
                entry_price = self.local_position_by_orders.short_avg;
            }
            entry_price.rescale(8);

            let mut cci = self.cci_arc.lock().await;
            cci.pos = pos;
            cci.entry_price = entry_price;
        }
    }

    // #[instrument(skip(self), level="TRACE")]
    pub async fn get_exchange_info(&mut self) {
        self.market = self.platform_rest.get_self_market();
        info!(?self.market);
    }

    // #[instrument(skip(self, data), level="TRACE")]
    pub async fn update_equity(&mut self, data: Account) {
        /*
           更新保证金信息
           合约一直更新
           现货只有当出现异常时更新
       */
        if self.exchange.contains("spot") {
            return;
        }
        self.local_cash = data.balance * self.used_pct;
    }

    // #[instrument(skip(self), level="TRACE")]
    pub async fn update_equity_rest_swap(&mut self) {
        match self.platform_rest.get_account().await {
            Ok(account) => {
                /*
                   更新保证金信息
                   合约一直更新
                   现货只有当出现异常时更新
               */
                self.local_cash = account.balance * self.used_pct
            }
            Err(e) => {
                info!("获取账户信息错误: {:?}", e);
            }
        }
    }

    pub async fn update_position_rest_swap(&mut self) {
        let position = self.platform_rest.get_position().await;
        match position {
            Ok(val) => {
                // info!("bybit_swap：定时获取的仓位信息");
                self.update_position(val).await;
            }
            Err(err) => {
                error!("bybit_swap：定时获取仓位信息错误!\nget_position:res_data={:?}", err);
            }
        }
    }

    // #[instrument(skip(self), level="TRACE")]
    pub async fn update_equity_rest_spot(&mut self) {
        match self.platform_rest.get_spot_account().await {
            Ok(mut val) => {
                // 如果返回的数组里没有交易货币，则补充交易货币
                if !val.iter().any(|a| a.coin.to_uppercase().eq(&self.base.to_uppercase())) {
                    let mut base_coin_account = Account::new();
                    base_coin_account.coin = self.base.to_uppercase();
                    val.push(base_coin_account);
                }

                for account in val {
                    // 交易货币
                    if self.base.to_uppercase() == account.coin {
                        self.local_coin = account.balance;
                    }
                    // 本位货币
                    if self.quote.to_uppercase() == account.coin {
                        self.local_cash = account.balance;
                    }
                }
            }
            Err(err) => {
                error!("获取仓位信息异常: {}", err);
            }
        }
    }

    // #[instrument(skip(self, target_hold_coin), level="TRACE")]
    pub async fn check_position(&mut self) -> ClearPositionResult {
        let mut result = ClearPositionResult::new();
        info!("------------------------------------------------------------------------------------------------------------");
        info!("步骤一：检查挂单：");
        match self.platform_rest.cancel_orders_all().await {
            Ok(val) => {
                let length = val.len();
                result.clear_order_num = length.to_string();
                info!("已清空所有挂单（{}条）", length);
                result.clear_order_str = format!("清空所有挂单：{:?}", val);
                for o in val {
                    info!("    {:?}", o);
                }
            }
            Err(err) => {
                warn!("取消所有订单异常({})，启动备用方法。", err);
                match self.platform_rest.cancel_orders().await {
                    Ok(val) => {
                        let length = val.len();
                        result.clear_order_num = length.to_string();
                        result.clear_order_str = format!("清空所有挂单(备用)：{:?}", val);
                        info!("清空所有挂单（{}条）：{:?}", length, val);
                    }
                    Err(exc) => {
                        result.clear_order_str = exc.to_string();
                        result.clear_other_err = true;
                        error!("清空当前币对订单异常: {}", exc);
                    }
                }
            }
        }
        info!("挂单检查完毕。");
        info!("");

        info!("步骤二：检查仓位：");
        match self.platform_rest.get_positions().await {
            Ok(val) => {
                info!("检查仓位信息");
                result.clear_position_num = val.len().to_string();
                for position in val {
                    if position.amount.eq(&Decimal::ZERO) {
                        continue;
                    }
                    info!("    仓位：{:?}", position);
                    let price = Decimal::ZERO;
                    let side;
                    info!(?position);
                    match position.position_mode {
                        PositionModeEnum::Long => {
                            // pd
                            side = "pd";
                        }
                        PositionModeEnum::Short => {
                            // pk
                            side = "pk";
                        }
                        _ => {
                            error!("    仓位position_mode匹配失败，不做操作！");
                            // 执行完当前币对  结束循环
                            continue;
                        }
                    }
                    // 发起清仓订单
                    let mut ts = TraceStack::new(0, Instant::now());
                    ts.on_before_send();

                    // 市价单
                    match self.platform_rest.take_order_symbol(position.symbol.clone(),
                                                               Decimal::ONE,
                                                               utils::generate_client_id(None).as_str(),
                                                               side,
                                                               price,
                                                               position.amount.abs()).await {
                        Ok(order) => {
                            ts.on_after_send();
                            info!("    {}仓位清除市价下单成功 {:?}, {}", position.symbol.clone(), order, ts.to_string());
                            result.clear_position_str = format!("{} >仓位信息：{:?} 下单信息: {:?}",result.clear_position_str, position, order);
                            // 执行完当前币对  结束循环
                            continue;
                        }
                        Err(error) => {
                            // ts.on_after_send();
                            error!("    {}仓位清除市价下单异常 {}, {}", position.symbol.clone(), error, ts.to_string());
                            result.clear_other_str = format!("{} >仓位信息：{:?} 下单异常信息: {:?}",result.clear_other_str, position, error);
                            // 执行完当前币对  结束循环
                            continue;
                        }
                    };
                }
            }
            Err(error) => {
                result.clear_other_err = true;
                result.clear_position_str = format!("获取仓位异常 {}", error);
                error!("获取仓位信息异常: {}", error);
            }
        }
        info!("------------------------------------------------------------------------------------------------------------");
        info!("");

        return result;
    }


    // #[instrument(skip(self), level="TRACE")]
    pub async fn exit(&mut self, r_id: String) -> bool {
        info!("-------------------------启动退出流程({})----------------------------", self.exit_msg);
        info!("");

        let mut result = self.check_position().await;
        // 设置机器人id
        result.r_id = r_id;
        info!("清仓程序结果 {:?}", result);
        // 判断是否有清仓，是否有异常
        if result.clear_position_num != "0" || result.clear_order_num != "0" || result.clear_other_err{
            info!("上报了清仓信息！！！");
            send_clear_msg_request(&result).await;
            // 上报清仓日志
        }

        info!("订单、仓位清除完毕，为避免api失效导致遗漏仓位，建议人工复查。");
        info!("停机原因：{}。", self.exit_msg);
        return true;
    }

    // #[instrument(skip(self), level="TRACE")]
    pub async fn before_trade(&mut self) -> bool {
        sleep(Duration::from_secs(1)).await;
        // 获取市场信息
        self.get_exchange_info().await;
        // 获取价格信息
        let ticker = self.platform_rest.get_ticker().await.expect("获取价格信息异常!");
        info!(?ticker);
        let mp = (ticker.buy + ticker.sell) / Decimal::TWO;
        // 获取账户信息
        if self.exchange.contains("spot") {
            self.update_equity_rest_spot().await;
        } else {
            self.update_equity_rest_swap().await;
        }
        // 更新中控账户相关信息
        {
            let mut now_balance = self.local_cash / self.used_pct;
            now_balance.rescale(4);

            let mut cci = self.cci_arc.lock().await;
            cci.now_balance = now_balance;
        }
        // 初始资金
        let start_cash = self.local_cash.clone();
        let start_coin = self.local_coin.clone();
        if start_cash.is_zero() && start_coin.is_zero() {
            self.exit_msg = format!("{}{}{}{}", "初始余额为零 cash: ", start_cash, " coin: ", start_coin);
        }
        info!("初始cash: {start_cash} 初始coin: {start_coin}");
        // 初始化策略基础信息
        if mp <= Decimal::ZERO {
            self.exit_msg = format!("{}{}", "初始价格获取错误: ", mp);
            return false;
        } else {
            info!("初始价格为 {}", mp);
        }
        self.strategy.mp = mp.clone();
        self.strategy.start_cash = start_cash.clone();
        self.strategy.start_coin = start_coin.clone();
        self.strategy.start_equity = start_cash + start_coin * mp;
        self.strategy.max_equity = self.strategy.start_equity.clone();
        self.strategy.equity = self.strategy.start_equity.clone();
        self.strategy.total_amount = self.strategy.equity * self.strategy.lever_rate / self.strategy.mp;
        // 获取数量精度
        self.strategy.step_size = self.market.amount_size.clone();
        if self.strategy.step_size > Decimal::ONE {
            self.strategy.step_size = self.strategy.step_size.trunc();
        }
        // 获取价格精度
        self.strategy.tick_size = self.market.tick_size.clone();
        if self.strategy.tick_size > Decimal::ONE {
            self.strategy.tick_size = self.strategy.tick_size.trunc();
        }
        if self.strategy.step_size.is_zero() || self.strategy.tick_size.is_zero() {
            self.exit_msg = format!("{}{}{}{}", "交易精度未正常获取 step_size: ", self.strategy.step_size, " tick_size:", self.strategy.tick_size);
            return false;
        } else {
            info!("数量精度 {}", self.strategy.step_size);
            info!("价格精度 {}", self.strategy.tick_size);
        }

        // 初始化调度器
        self.local_cash = start_cash;
        self.local_coin = start_coin;

        // 买入平台币
        if self.exchange.contains("spot") { // 现货

        }

        // 清空挂单和仓位
        return true;
    }
}

// 清仓消息上报中控
pub async fn send_clear_msg_request(body_params: &ClearPositionResult) {
    // 创建客户端
    let client = reqwest::Client::new();

    // 创建请求头
    let mut headers = HeaderMap::new();
    headers.insert(CONTENT_TYPE, HeaderValue::from_static("application/json"));
    headers.insert("report-token", HeaderValue::from_static("r7T$8gBV!f&L@E2+"));
    headers.insert("auth", HeaderValue::from_static("4L"));

    let body = serde_json::to_string(&body_params).unwrap();

    // 发送 POST 请求
    let res = client
        .post("https://t4lapi.skyfffire.com/api/report/searchPositions")
        .body(body)
        .headers(headers)
        .send()
        .await;
    match res {
        Ok(response) => {
            let status = response.status();
            let response_text = response.text().await.unwrap_or("获取请求的响应文本异常".to_string());
            // 检查响应状态并读取响应体
            if status.is_success() {
                info!("清仓结果上报中控,请求成功，响应文本: {}", response_text);
            } else {
                println!("清仓结果上报中控，请求失败: 响应异常码 {}，响应文本 {}", status, response_text);
            }
        },
        Err(e) => {
            error!("清仓结果上报中控，请求发送失败，异常：{}", e)
        }
    }
}