#!/usr/bin/env python3
"""
简单的文件监控脚本
使用轮询方式检查文件变化，触发同步
"""

import os
import sys
import time
import subprocess
import logging
import threading
from datetime import datetime
from pathlib import Path

# 配置
PROJECT_DIR = "/Users/chufeng/.openclaw/sanguo_projects/sanguo_quant_live"
LOG_FILE = os.path.join(PROJECT_DIR, "simple-watcher.log")
SYNC_SCRIPT = os.path.join(PROJECT_DIR, "auto-sync.sh")
LOCK_FILE = "/tmp/sanguo_sync.lock"
CHECK_INTERVAL = 60  # 检查间隔（秒）= 1 分钟
IGNORE_EXTENSIONS = ['.log', '.tmp', '~']
IGNORE_DIRS = ['.git']

# 设置日志
logging.basicConfig(
    level=logging.INFO,
    format='[%(asctime)s] %(message)s',
    handlers=[
        logging.FileHandler(LOG_FILE),
        logging.StreamHandler()
    ]
)
logger = logging.getLogger(__name__)

class FileWatcher:
    def __init__(self, directory):
        self.directory = Path(directory)
        self.last_modified = {}
        self.running = True
        
        # 初始化文件状态
        self._init_file_states()
    
    def _init_file_states(self):
        """初始化文件修改时间记录"""
        for root, dirs, files in os.walk(self.directory):
            # 跳过忽略的目录
            dirs[:] = [d for d in dirs if d not in IGNORE_DIRS]
            
            for file in files:
                # 跳过忽略的文件类型
                if any(file.endswith(ext) for ext in IGNORE_EXTENSIONS):
                    continue
                
                filepath = Path(root) / file
                try:
                    self.last_modified[str(filepath)] = filepath.stat().st_mtime
                except (OSError, FileNotFoundError):
                    pass
    
    def _should_ignore(self, filepath):
        """检查是否应该忽略该文件"""
        path_str = str(filepath)
        
        # 检查文件扩展名
        if any(path_str.endswith(ext) for ext in IGNORE_EXTENSIONS):
            return True
        
        # 检查目录
        for ignore_dir in IGNORE_DIRS:
            if f"/{ignore_dir}/" in path_str or path_str.endswith(f"/{ignore_dir}"):
                return True
        
        return False
    
    def check_for_changes(self):
        """检查文件变化"""
        changes_detected = False
        
        for root, dirs, files in os.walk(self.directory):
            # 跳过忽略的目录
            dirs[:] = [d for d in dirs if d not in IGNORE_DIRS]
            
            for file in files:
                filepath = Path(root) / file
                filepath_str = str(filepath)
                
                # 检查是否应该忽略
                if self._should_ignore(filepath):
                    continue
                
                try:
                    current_mtime = filepath.stat().st_mtime
                    last_mtime = self.last_modified.get(filepath_str)
                    
                    if last_mtime is None:
                        # 新文件
                        self.last_modified[filepath_str] = current_mtime
                        changes_detected = True
                        logger.info(f"New file detected: {filepath.relative_to(self.directory)}")
                    elif current_mtime > last_mtime:
                        # 文件被修改
                        self.last_modified[filepath_str] = current_mtime
                        changes_detected = True
                        logger.info(f"File modified: {filepath.relative_to(self.directory)}")
                
                except (OSError, FileNotFoundError):
                    # 文件被删除
                    if filepath_str in self.last_modified:
                        del self.last_modified[filepath_str]
                        changes_detected = True
                        logger.info(f"File deleted: {filepath.relative_to(self.directory)}")
        
        return changes_detected
    
    def run_sync(self):
        """运行同步脚本"""
        # 检查锁文件
        if os.path.exists(LOCK_FILE):
            logger.info("Sync already in progress, skipping...")
            return
        
        # 创建锁文件
        try:
            with open(LOCK_FILE, 'w') as f:
                f.write(str(datetime.now()))
        except:
            pass
        
        try:
            logger.info("Detected file change, running sync...")
            
            # 运行同步脚本
            result = subprocess.run([SYNC_SCRIPT], capture_output=True, text=True)
            
            if result.returncode == 0:
                logger.info("Sync completed successfully")
            else:
                logger.error(f"Sync failed with code {result.returncode}")
                if result.stderr:
                    logger.error(f"Error output: {result.stderr}")
        
        finally:
            # 删除锁文件
            try:
                os.remove(LOCK_FILE)
            except:
                pass
    
    def start(self):
        """开始监控"""
        logger.info(f"Starting file watcher in {self.directory}")
        logger.info(f"Check interval: {CHECK_INTERVAL} seconds")
        logger.info(f"Sync script: {SYNC_SCRIPT}")
        
        try:
            while self.running:
                if self.check_for_changes():
                    self.run_sync()
                    # 同步后等待几秒避免频繁触发
                    time.sleep(3)
                
                time.sleep(CHECK_INTERVAL)
        
        except KeyboardInterrupt:
            logger.info("File watcher stopped by user")
        except Exception as e:
            logger.error(f"Unexpected error: {e}")
            raise
    
    def stop(self):
        """停止监控"""
        self.running = False

def main():
    # 确保同步脚本存在且可执行
    if not os.path.exists(SYNC_SCRIPT):
        logger.error(f"Sync script not found: {SYNC_SCRIPT}")
        sys.exit(1)
    
    # 确保可执行
    if not os.access(SYNC_SCRIPT, os.X_OK):
        os.chmod(SYNC_SCRIPT, 0o755)
    
    # 创建监控器
    watcher = FileWatcher(PROJECT_DIR)
    
    # 开始监控
    watcher.start()

if __name__ == "__main__":
    main()