import React, { useState, useEffect } from 'react'
import { api } from '../services/api'
import './TradeList.css'

const TradeList = () => {
  const [trades, setTrades] = useState([])
  const [stats, setStats] = useState(null)
  const [loading, setLoading] = useState(true)
  
  // 筛选状态
  const [period, setPeriod] = useState(null) // '1d', '7d', '30d', null
  const [startDate, setStartDate] = useState('')
  const [endDate, setEndDate] = useState('')
  const [symbol, setSymbol] = useState('')
  const [status, setStatus] = useState('')
  const [useCustomDate, setUseCustomDate] = useState(false)

  useEffect(() => {
    loadData()
  }, [])

  const loadData = async () => {
    setLoading(true)
    try {
      const params = {
        limit: 100
      }
      
      // 如果使用快速时间段筛选
      if (!useCustomDate && period) {
        params.period = period
      } else if (useCustomDate) {
        // 使用自定义日期
        if (startDate) params.start_date = startDate
        if (endDate) params.end_date = endDate
      }
      
      if (symbol) params.symbol = symbol
      if (status) params.status = status
      
      const [tradesData, statsData] = await Promise.all([
        api.getTrades(params),
        api.getTradeStats(params)
      ])
      setTrades(tradesData.trades || [])
      setStats(statsData)
    } catch (error) {
      console.error('Failed to load trades:', error)
    } finally {
      setLoading(false)
    }
  }

  const handlePeriodChange = (newPeriod) => {
    setPeriod(newPeriod)
    setUseCustomDate(false)
    setStartDate('')
    setEndDate('')
  }

  const handleCustomDateToggle = () => {
    setUseCustomDate(!useCustomDate)
    if (!useCustomDate) {
      setPeriod(null)
    }
  }

  const handleReset = () => {
    setPeriod(null)
    setStartDate('')
    setEndDate('')
    setSymbol('')
    setStatus('')
    setUseCustomDate(false)
  }

  if (loading) return <div className="loading">加载中...</div>

  return (
    <div className="trade-list">
      <h2>交易记录</h2>
      
      {/* 筛选面板 */}
      <div className="filter-panel">
        <div className="filter-section">
          <label>快速筛选：</label>
          <div className="period-buttons">
            <button 
              className={period === '1d' ? 'active' : ''}
              onClick={() => handlePeriodChange('1d')}
            >
              最近1天
            </button>
            <button 
              className={period === '7d' ? 'active' : ''}
              onClick={() => handlePeriodChange('7d')}
            >
              最近7天
            </button>
            <button 
              className={period === '30d' ? 'active' : ''}
              onClick={() => handlePeriodChange('30d')}
            >
              最近30天
            </button>
            <button 
              className={period === null && !useCustomDate ? 'active' : ''}
              onClick={() => handlePeriodChange(null)}
            >
              全部
            </button>
          </div>
        </div>

        <div className="filter-section">
          <label>
            <input 
              type="checkbox" 
              checked={useCustomDate}
              onChange={handleCustomDateToggle}
            />
            自定义时间段
          </label>
          {useCustomDate && (
            <div className="date-inputs">
              <input
                type="date"
                value={startDate}
                onChange={(e) => setStartDate(e.target.value)}
                placeholder="开始日期"
              />
              <span>至</span>
              <input
                type="date"
                value={endDate}
                onChange={(e) => setEndDate(e.target.value)}
                placeholder="结束日期"
                min={startDate}
              />
            </div>
          )}
        </div>

        <div className="filter-section">
          <label>交易对：</label>
          <input
            type="text"
            value={symbol}
            onChange={(e) => setSymbol(e.target.value)}
            placeholder="如: BTCUSDT"
            style={{ width: '150px' }}
          />
        </div>

        <div className="filter-section">
          <label>状态：</label>
          <select
            value={status}
            onChange={(e) => setStatus(e.target.value)}
            style={{ width: '120px' }}
          >
            <option value="">全部</option>
            <option value="open">持仓中</option>
            <option value="closed">已平仓</option>
            <option value="cancelled">已取消</option>
          </select>
        </div>

        <div className="filter-actions">
          <button className="btn-primary" onClick={loadData}>
            查询
          </button>
          <button className="btn-secondary" onClick={handleReset}>
            重置
          </button>
        </div>
      </div>
      
      {stats && (
        <div className="stats-summary">
          <div className="stat-card">
            <div className="stat-label">总交易数</div>
            <div className="stat-value">{stats.total_trades}</div>
          </div>
          <div className="stat-card">
            <div className="stat-label">胜率</div>
            <div className="stat-value">{stats.win_rate.toFixed(2)}%</div>
          </div>
          <div className="stat-card">
            <div className="stat-label">总盈亏</div>
            <div className={`stat-value ${stats.total_pnl >= 0 ? 'positive' : 'negative'}`}>
              {stats.total_pnl.toFixed(2)} USDT
            </div>
          </div>
          <div className="stat-card">
            <div className="stat-label">平均盈亏</div>
            <div className={`stat-value ${stats.avg_pnl >= 0 ? 'positive' : 'negative'}`}>
              {stats.avg_pnl.toFixed(2)} USDT
            </div>
          </div>
        </div>
      )}

      {trades.length === 0 ? (
        <div className="no-data">暂无交易记录</div>
      ) : (
        <table className="trades-table">
          <thead>
            <tr>
              <th>交易对</th>
              <th>方向</th>
              <th>数量</th>
              <th>入场价</th>
              <th>出场价</th>
              <th>盈亏</th>
              <th>状态</th>
              <th>时间</th>
            </tr>
          </thead>
          <tbody>
            {trades.map(trade => (
              <tr key={trade.id}>
                <td>{trade.symbol}</td>
                <td className={trade.side === 'BUY' ? 'buy' : 'sell'}>{trade.side}</td>
                <td>{parseFloat(trade.quantity).toFixed(4)}</td>
                <td>{parseFloat(trade.entry_price).toFixed(4)}</td>
                <td>{trade.exit_price ? parseFloat(trade.exit_price).toFixed(4) : '-'}</td>
                <td className={parseFloat(trade.pnl) >= 0 ? 'positive' : 'negative'}>
                  {parseFloat(trade.pnl).toFixed(2)} USDT
                </td>
                <td>
                  <span className={`status ${trade.status}`}>{trade.status}</span>
                </td>
                <td>{new Date(trade.entry_time).toLocaleString('zh-CN')}</td>
              </tr>
            ))}
          </tbody>
        </table>
      )}
    </div>
  )
}

export default TradeList