#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
相机启动性能测试脚本
"""

import sys
import os
import time
import logging
from typing import Dict, Any

# 添加项目路径
sys.path.append(os.path.dirname(os.path.abspath(__file__)))

from devices.utils.config_manager import ConfigManager
from devices.camera_manager import CameraManager

# 设置日志级别为DEBUG以查看详细信息
logging.basicConfig(
    level=logging.DEBUG,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)

def test_camera_startup_performance():
    """
    测试相机启动性能
    """
    print("=" * 60)
    print("相机启动性能测试")
    print("=" * 60)
    
    try:
        # 初始化配置管理器
        print("\n1. 初始化配置管理器...")
        config_start = time.time()
        config_manager = ConfigManager()
        config_time = (time.time() - config_start) * 1000
        print(f"配置管理器初始化完成 (耗时: {config_time:.1f}ms)")
        
        # 创建相机管理器
        print("\n2. 创建相机管理器...")
        manager_start = time.time()
        camera_manager = CameraManager(None, config_manager)
        manager_time = (time.time() - manager_start) * 1000
        print(f"相机管理器创建完成 (耗时: {manager_time:.1f}ms)")
        
        # 测试多次初始化以获得平均性能
        print("\n3. 执行相机初始化性能测试...")
        test_rounds = 3
        init_times = []
        
        for i in range(test_rounds):
            print(f"\n--- 第 {i+1} 轮测试 ---")
            
            # 如果之前已连接，先断开
            if camera_manager.is_connected:
                disconnect_start = time.time()
                camera_manager.disconnect()
                disconnect_time = (time.time() - disconnect_start) * 1000
                print(f"断开连接耗时: {disconnect_time:.1f}ms")
                time.sleep(0.5)  # 等待设备完全断开
            
            # 执行初始化
            init_start = time.time()
            success = camera_manager.initialize()
            init_time = (time.time() - init_start) * 1000
            
            if success:
                print(f"✓ 初始化成功 (总耗时: {init_time:.1f}ms)")
                init_times.append(init_time)
                
                # 测试校准性能
                calibrate_start = time.time()
                calibrate_success = camera_manager.calibrate()
                calibrate_time = (time.time() - calibrate_start) * 1000
                
                if calibrate_success:
                    print(f"✓ 校准成功 (耗时: {calibrate_time:.1f}ms)")
                else:
                    print(f"✗ 校准失败 (耗时: {calibrate_time:.1f}ms)")
                
                # 测试第一帧获取时间
                if camera_manager.cap:
                    first_frame_start = time.time()
                    ret, frame = camera_manager.cap.read()
                    first_frame_time = (time.time() - first_frame_start) * 1000
                    
                    if ret and frame is not None:
                        print(f"✓ 首帧获取成功 (耗时: {first_frame_time:.1f}ms, 帧大小: {frame.shape})")
                        del frame  # 释放内存
                    else:
                        print(f"✗ 首帧获取失败 (耗时: {first_frame_time:.1f}ms)")
            else:
                print(f"✗ 初始化失败 (耗时: {init_time:.1f}ms)")
            
            time.sleep(1)  # 测试间隔
        
        # 性能统计
        print("\n" + "=" * 60)
        print("性能统计结果")
        print("=" * 60)
        
        if init_times:
            avg_init_time = sum(init_times) / len(init_times)
            min_init_time = min(init_times)
            max_init_time = max(init_times)
            
            print(f"初始化性能统计 ({len(init_times)} 次成功测试):")
            print(f"  平均耗时: {avg_init_time:.1f}ms")
            print(f"  最快耗时: {min_init_time:.1f}ms")
            print(f"  最慢耗时: {max_init_time:.1f}ms")
            
            # 性能评估
            if avg_init_time < 1000:  # 1秒以内
                print(f"  性能评级: 优秀 ⭐⭐⭐")
            elif avg_init_time < 3000:  # 3秒以内
                print(f"  性能评级: 良好 ⭐⭐")
            elif avg_init_time < 5000:  # 5秒以内
                print(f"  性能评级: 一般 ⭐")
            else:
                print(f"  性能评级: 需要优化 ❌")
        else:
            print("❌ 所有初始化测试都失败了")
        
        # 获取设备信息
        if camera_manager.is_connected:
            print("\n设备信息:")
            device_info = camera_manager.get_device_info()
            for key, value in device_info.items():
                print(f"  {key}: {value}")
        
        # 清理资源
        print("\n4. 清理资源...")
        cleanup_start = time.time()
        camera_manager.cleanup()
        cleanup_time = (time.time() - cleanup_start) * 1000
        print(f"资源清理完成 (耗时: {cleanup_time:.1f}ms)")
        
    except Exception as e:
        print(f"\n❌ 测试过程中发生错误: {e}")
        import traceback
        traceback.print_exc()

def test_streaming_startup():
    """
    测试流媒体启动性能
    """
    print("\n" + "=" * 60)
    print("流媒体启动性能测试")
    print("=" * 60)
    
    try:
        config_manager = ConfigManager()
        camera_manager = CameraManager(None, config_manager)
        
        # 初始化相机
        print("\n1. 初始化相机...")
        if not camera_manager.initialize():
            print("❌ 相机初始化失败，无法进行流媒体测试")
            return
        
        # 测试流媒体启动
        print("\n2. 启动流媒体...")
        streaming_start = time.time()
        streaming_success = camera_manager.start_streaming()
        streaming_time = (time.time() - streaming_start) * 1000
        
        if streaming_success:
            print(f"✓ 流媒体启动成功 (耗时: {streaming_time:.1f}ms)")
            
            # 等待几秒钟收集帧数据
            print("\n3. 收集性能数据...")
            time.sleep(3)
            
            # 获取统计信息
            stats = camera_manager.get_stats()
            print(f"\n流媒体性能统计:")
            for key, value in stats.items():
                print(f"  {key}: {value}")
            
            # 停止流媒体
            print("\n4. 停止流媒体...")
            stop_start = time.time()
            camera_manager.stop_streaming()
            stop_time = (time.time() - stop_start) * 1000
            print(f"✓ 流媒体停止完成 (耗时: {stop_time:.1f}ms)")
        else:
            print(f"❌ 流媒体启动失败 (耗时: {streaming_time:.1f}ms)")
        
        # 清理
        camera_manager.cleanup()
        
    except Exception as e:
        print(f"\n❌ 流媒体测试过程中发生错误: {e}")
        import traceback
        traceback.print_exc()

def main():
    """
    主函数
    """
    print("相机性能测试工具")
    print("测试目标：优化相机启动时间，目标从10+秒降低到3秒以内")
    
    # 执行基本启动性能测试
    test_camera_startup_performance()
    
    # 执行流媒体启动性能测试
    test_streaming_startup()
    
    print("\n" + "=" * 60)
    print("测试完成！")
    print("=" * 60)

if __name__ == '__main__':
    main()