"""
高频算法性能基准测试
测试不同实现方式的性能
"""

import time
import numpy as np
import pandas as pd
from datetime import datetime
from high_frequency_signal import (
    TechnicalFactorCalculator,
    PerformanceMonitor,
    BarData,
)


def generate_test_data(n: int = 10000) -> pd.DataFrame:
    """生成随机测试数据"""
    np.random.seed(42)
    
    # 生成随机游走价格
    returns = np.random.normal(0.0001, 0.01, n)
    price = 100 * np.exp(np.cumsum(returns))
    
    # 生成OHLCV
    high = price * (1 + np.random.uniform(0, 0.01, n))
    low = price * (1 - np.random.uniform(0, 0.01, n))
    open_ = price * (1 + np.random.normal(0, 0.005, n))
    volume = np.random.randint(100000, 10000000, n)
    
    df = pd.DataFrame({
        'open': open_,
        'high': high,
        'low': low,
        'close': price,
        'volume': volume,
    })
    
    return df


def benchmark_technical_calculator():
    """测试技术因子计算器性能"""
    print("=" * 60)
    print("技术因子计算器性能基准测试")
    print("=" * 60)
    
    calc = TechnicalFactorCalculator()
    monitor = PerformanceMonitor()
    
    # 测试不同数据大小
    for size in [100, 1000, 10000]:
        df = generate_test_data(size)
        close = df['close'].values
        high = df['high'].values
        low = df['low'].values
        volume = df['volume'].values
        
        n_runs = 1000 if size <= 1000 else 100
        
        # 测试MA
        start_time = time.time()
        for _ in range(n_runs):
            _ = calc.calculate_ma(close, 20)
        elapsed = (time.time() - start_time) * 1000
        print(f"MA {size} points x{n_runs} runs: {elapsed:.2f} ms "
              f"({elapsed/n_runs:.3f} ms/run)")
        
        # 测试MACD
        start_time = time.time()
        for _ in range(n_runs):
            _ = calc.calculate_macd(close, 12, 26, 9)
        elapsed = (time.time() - start_time) * 1000
        print(f"MACD {size} points x{n_runs} runs: {elapsed:.2f} ms "
              f"({elapsed/n_runs:.3f} ms/run)")
        
        # 测试RSI
        start_time = time.time()
        for _ in range(n_runs):
            _ = calc.calculate_rsi(close, 14)
        elapsed = (time.time() - start_time) * 1000
        print(f"RSI {size} points x{n_runs} runs: {elapsed:.2f} ms "
              f"({elapsed/n_runs:.3f} ms/run)")
        
        # 测试布林带
        start_time = time.time()
        for _ in range(n_runs):
            _ = calc.calculate_bollinger_bands(close, 20, 2.0)
        elapsed = (time.time() - start_time) * 1000
        print(f"Bollinger {size} points x{n_runs} runs: {elapsed:.2f} ms "
              f"({elapsed/n_runs:.3f} ms/run)")
        
        # 测试ATR
        start_time = time.time()
        for _ in range(n_runs):
            _ = calc.calculate_atr(high, low, close, 14)
        elapsed = (time.time() - start_time) * 1000
        print(f"ATR {size} points x{n_runs} runs: {elapsed:.2f} ms "
              f"({elapsed/n_runs:.3f} ms/run)")
        
        print()


def benchmark_full_pipeline():
    """测试完整信号生成流水线"""
    print("=" * 60)
    print("完整信号生成流水线性能基准测试")
    print("=" * 60)
    
    from high_frequency_signal import HighFrequencySignalGenerator
    
    calc = TechnicalFactorCalculator()
    generator = HighFrequencySignalGenerator()
    monitor = PerformanceMonitor()
    
    # 生成测试数据
    n_days = 252 * 5
    df = generate_test_data(n_days)
    
    start_time = time.time()
    
    # 模拟逐日处理
    signals = []
    for i in range(20, len(df)):
        data = df.iloc[:i+1]
        bar = BarData(
            code="TEST",
            datetime=datetime.now(),
            open=data['open'].iloc[-1],
            high=data['high'].iloc[-1],
            low=data['low'].iloc[-1],
            close=data['close'].iloc[-1],
            volume=data['volume'].iloc[-1],
            amount=data['volume'].iloc[-1] * data['close'].iloc[-1]
        )
        monitor.on_process_start()
        signal = generator.generate_signal_from_bar(bar, data)
        monitor.on_process_end()
        if signal:
            signals.append(signal)
    
    elapsed = (time.time() - start_time) * 1000
    print(f"完整回测 {n_days} 根K线，生成 {len(signals)} 个信号")
    print(f"总耗时: {elapsed:.2f} ms")
    print(f"平均每根K线: {elapsed/n_days:.3f} ms")
    print()
    
    monitor.print_stats()
    
    stats = generator.get_performance_stats()
    print(f"\n信号统计: {stats}")


def main():
    """主函数"""
    benchmark_technical_calculator()
    print()
    benchmark_full_pipeline()
    print()
    print("=" * 60)
    print("基准测试完成")
    print("=" * 60)


if __name__ == '__main__':
    main()