import sys
import time
from typing import List, Dict, Any
from dataclasses import dataclass, field

# 导入其他模块
from process_management import ProcessManager
from memory_management import MemoryManager
from resource_management import ResourceManager
# from file_system import FileSystem
# from disk_management import DiskManager
from command_interpreter import CommandInterpreter


@dataclass
class OperatingSystem:
    """
    模拟操作系统核心类
    """
    process_manager: ProcessManager = field(default_factory=ProcessManager)
    memory_manager: MemoryManager = field(default_factory=MemoryManager)
    resource_manager: ResourceManager = field(default_factory=ResourceManager)
    # file_system: FileSystem = field(default_factory=FileSystem)
    # disk_manager: DiskManager = field(default_factory=DiskManager)
    command_interpreter: CommandInterpreter = field(default_factory=CommandInterpreter)

    def execute_job_script(self, script_path: str):
        """
        通过命令解释器执行作业脚本

        :param script_path: 作业脚本文件路径
        """
        try:
            # 读取并解析脚本
            with open(script_path, 'r') as script_file:
                script_lines = script_file.readlines()

            # 为脚本创建作业/进程
            job = self.process_manager.create_process(script_path)

            # 解释并执行命令
            for line in script_lines:
                line = line.strip()
                if line:
                    self.command_interpreter.execute_command(line, job, self)

            # 完成进程
            self.process_manager.terminate_process(job)

        except Exception as e:
            print(f"执行作业脚本 {script_path} 时出错: {e}")

    def run_system(self, job_scripts: List[str]):
        """
        并发运行多个作业脚本

        :param job_scripts: 要执行的脚本路径列表
        """
        # 模拟并发作业处理
        for script in job_scripts:
            try:
                self.execute_job_script(script)
            except Exception as e:
                print(f"作业 {script} 出错: {e}")

        # 计算并显示系统性能指标
        self.display_system_performance()

    def display_system_performance(self):
        """
        显示整体系统性能指标
        """
        print("\n--- 系统性能指标 ---")
        print(f"总进程数: {self.process_manager.get_total_processes()}")
        print(f"平均周转时间: {self.process_manager.calculate_avg_turnaround_time():.2f}")
        print(f"平均带权周转时间: {self.process_manager.calculate_avg_weighted_turnaround_time():.2f}")
        print(f"缺页率: {self.memory_manager.calculate_page_fault_rate():.2%}")
        # print(f"磁盘寻道优化: {self.disk_manager.get_seek_optimization_metric()}")


def main():
    # 创建操作系统实例
    os_sim = OperatingSystem()

    # 模拟作业脚本
    job_scripts = [
        'job1_script.txt',
        'job2_script.txt',
        'job3_script.txt'
    ]

    # 运行操作系统模拟
    os_sim.run_system(job_scripts)


if __name__ == '__main__':
    main()