#weiyongfu
#sftp sync
#多线程，可计划任务完成webhook通知

import paramiko
import os
import stat
from datetime import datetime
import sys
import threading
from concurrent.futures import ThreadPoolExecutor, as_completed
import requests
import json
import time

def send_webhook_notification(stats, status, error_message=None):
    """
    发送Webhook通知 - 企业微信机器人版本
    """
    # 您的企业微信机器人Webhook URL
    webhook_url = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=eb38eaac-c2a2-40a0-b64e-9a78edc67ebf"
    
    # 构建企业微信机器人要求的消息格式
    if status == "success":
        content = f"✅ 文件同步成功\n\n" \
                 f" 同步统计:\n" \
                 f"• 总文件数: {stats['total_files']}\n" \
                 f"• 成功下载: {stats['downloaded']}\n" \
                 f"• 跳过文件: {stats['skipped']}\n" \
                 f"• 失败文件: {stats['failed']}\n" \
                 f"• 完成时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}"
    elif status == "failed":
        content = f"❌ 文件同步失败\n\n" \
                 f" 同步统计:\n" \
                 f"• 总文件数: {stats['total_files']}\n" \
                 f"• 成功下载: {stats['downloaded']}\n" \
                 f"• 跳过文件: {stats['skipped']}\n" \
                 f"• 失败文件: {stats['failed']}\n" \
                 f"• 错误信息: {error_message}\n" \
                 f"• 失败时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}"
    elif status == "no_files":
        content = f" 没有文件需要同步\n\n" \
                 f"• 检查时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}"
    else:
        content = f"文件同步状态: {status}\n" \
                 f"总文件数: {stats['total_files']}\n" \
                 f"完成时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}"
    
    # 企业微信机器人要求的消息格式
    notification_data = {
        "msgtype": "text",
        "text": {
            "content": content
        }
    }
    
    try:
        response = requests.post(
            webhook_url,
            json=notification_data,
            headers={'Content-Type': 'application/json'},
            timeout=10
        )
        
        if response.status_code == 200:
            result = response.json()
            if result.get('errcode') == 0:
                print("企业微信通知发送成功")
            else:
                print(f"企业微信通知发送失败，错误码: {result.get('errcode')}, 错误信息: {result.get('errmsg')}")
        else:
            print(f"企业微信通知发送失败，HTTP状态码: {response.status_code}")
            
    except requests.exceptions.RequestException as e:
        print(f"企业微信通知发送错误: {e}")

def sync_remote_to_local():
    # 服务器连接信息
    hostname = "59.36.23.197"
    port = 16888
    username = "boyigo"
    
    # 私钥文件路径
    private_key_path = r"C:\Users\admin\Desktop\boyigo"
    
    # 获取当天日期
    today = datetime.now()
    year = today.strftime("%Y")
    month = today.strftime("%m")
    day = today.strftime("%d")
    date_ymd = today.strftime("%Y%m%d")  # 格式: 20251114
    date_md = today.strftime("%m%d")     # 格式: 1114
    
    # 根据日期动态生成同步路径
    sync_paths = [
        {
            "remote": f"/list/10.99.9.75_sftp/L2/{date_ymd}SH",
            "local": fr"E:\data\SHL2\{year}\{date_ymd}"
        },
        {
            "remote": f"/list/10.99.9.75_sftp/L2/{date_ymd}SZ", 
            "local": fr"E:\data\SZL2\{year}\{date_md}"
        }
    ]
    
    # 统计信息
    stats = {
        'total_files': 0,
        'downloaded': 0,
        'skipped': 0,
        'failed': 0
    }
    stats_lock = threading.Lock()
    
    # 创建SSH客户端
    ssh_client = paramiko.SSHClient()
    ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    
    try:
        print(f"{datetime.now().strftime('%Y-%m-%d %H:%M:%S')} - 开始连接服务器...")
        print(f"主机: {hostname}:{port}, 用户: {username}")
        
        # 尝试加载私钥文件
        try:
            # 首先尝试作为RSA密钥加载
            private_key = paramiko.RSAKey.from_private_key_file(private_key_path)
            print(f"使用RSA私钥文件: {private_key_path}")
        except paramiko.ssh_exception.PasswordRequiredException:
            # 如果私钥有密码保护，需要输入密码
            key_password = input("请输入私钥密码: ")
            private_key = paramiko.RSAKey.from_private_key_file(private_key_path, password=key_password)
        except Exception as e1:
            print(f"RSA密钥加载失败: {e1}")
            try:
                # 尝试作为ECDSA密钥加载
                private_key = paramiko.ECDSAKey.from_private_key_file(private_key_path)
                print(f"使用ECDSA私钥文件: {private_key_path}")
            except Exception as e2:
                print(f"ECDSA密钥加载失败: {e2}")
                try:
                    # 尝试作为Ed25519密钥加载
                    private_key = paramiko.Ed25519Key.from_private_key_file(private_key_path)
                    print(f"使用Ed25519私钥文件: {private_key_path}")
                except Exception as e3:
                    print(f"所有密钥格式尝试失败: {e3}")
                    print("请检查私钥文件路径和格式")
                    # 发送失败通知
                    send_webhook_notification(stats, "failed", f"密钥加载失败: {e3}")
                    return False
        
        # 使用密钥建立连接
        ssh_client.connect(hostname, port, username, pkey=private_key, timeout=30)
        sftp_main = ssh_client.open_sftp()
        
        print("连接成功，开始同步文件...")
        print(f"同步日期: {date_ymd}")
        
        # 收集所有需要同步的文件
        all_files = []
        for path_info in sync_paths:
            remote_path = path_info["remote"]
            local_base_path = path_info["local"]
            
            print(f"\n扫描目录: {remote_path}")
            files_in_path = scan_remote_directory(sftp_main, remote_path, local_base_path)
            print(f"  找到 {len(files_in_path)} 个文件")
            all_files.extend(files_in_path)
        
        stats['total_files'] = len(all_files)
        print(f"\n总共发现 {stats['total_files']} 个文件需要同步")
        
        if stats['total_files'] == 0:
            print("没有文件需要同步")
            # 发送无文件通知
            send_webhook_notification(stats, "no_files")
            return True
        
        # 使用多线程下载文件 - 5个线程
        max_workers = 5
        print(f"开始多线程下载 (线程数: {max_workers})...")
        
        with ThreadPoolExecutor(max_workers=max_workers) as executor:
            # 提交所有下载任务
            future_to_file = {}
            for file_info in all_files:
                future = executor.submit(
                    download_file_with_new_connection, 
                    file_info, stats, stats_lock,
                    hostname, port, username, private_key
                )
                future_to_file[future] = file_info
            
            # 处理完成的任务
            completed = 0
            for future in as_completed(future_to_file):
                result = future.result()
                completed += 1
                if completed % 10 == 0:  # 每完成10个文件打印一次进度
                    print(f"  进度: {completed}/{stats['total_files']}")
        
        # 打印统计信息
        print(f"\n{datetime.now().strftime('%Y-%m-%d %H:%M:%S')} - 同步完成!")
        print("=" * 50)
        print(f"总文件数: {stats['total_files']}")
        print(f"成功下载: {stats['downloaded']}")
        print(f"跳过文件: {stats['skipped']}")
        print(f"失败文件: {stats['failed']}")
        print("=" * 50)
        
        # 发送成功通知
        send_webhook_notification(stats, "success")
        
    except Exception as e:
        error_msg = f"同步过程中出现错误: {e}"
        print(error_msg)
        import traceback
        traceback.print_exc()
        # 发送失败通知
        send_webhook_notification(stats, "failed", error_msg)
        return False
    finally:
        # 关闭连接
        try:
            sftp_main.close()
        except:
            pass
        try:
            ssh_client.close()
        except:
            pass
    
    return True

def scan_remote_directory(sftp, remote_path, local_base_path):
    """扫描远程目录，返回所有需要同步的文件列表"""
    files_list = []
    
    try:
        remote_items = sftp.listdir_attr(remote_path)
    except Exception as e:
        print(f"  无法访问远程目录 {remote_path}: {e}")
        return files_list
    
    for item in remote_items:
        remote_item_path = os.path.join(remote_path, item.filename).replace('\\', '/')
        
        if stat.S_ISDIR(item.st_mode):
            # 如果是目录，递归扫描
            sub_local_path = os.path.join(local_base_path, item.filename)
            sub_files = scan_remote_directory(sftp, remote_item_path, sub_local_path)
            files_list.extend(sub_files)
        else:
            # 如果是文件，添加到列表
            local_file_path = os.path.join(local_base_path, item.filename)
            files_list.append((remote_item_path, local_file_path, item))
    
    return files_list

def download_file(sftp, file_info, stats, stats_lock):
    """下载单个文件"""
    remote_file_path, local_file_path, remote_attr = file_info
    
    try:
        # 确保本地目录存在
        local_dir = os.path.dirname(local_file_path)
        os.makedirs(local_dir, exist_ok=True)
        
        # 检查本地文件是否存在
        if os.path.exists(local_file_path):
            local_stat = os.stat(local_file_path)
            local_size = local_stat.st_size
            local_mtime = local_stat.st_mtime
            
            # 获取远程文件修改时间
            remote_mtime = remote_attr.st_mtime
            
            # 如果文件大小和修改时间都相同，则跳过
            if local_size == remote_attr.st_size and abs(local_mtime - remote_mtime) < 2:
                with stats_lock:
                    stats['skipped'] += 1
                return "skipped"
            else:
                print(f"  更新: {os.path.basename(remote_file_path)} (大小: {local_size} -> {remote_attr.st_size})")
        else:
            print(f"  下载: {os.path.basename(remote_file_path)} (大小: {remote_attr.st_size} bytes)")
        
        # 下载文件
        sftp.get(remote_file_path, local_file_path)
        
        # 验证下载的文件大小
        downloaded_size = os.path.getsize(local_file_path)
        if downloaded_size != remote_attr.st_size:
            # 如果大小不匹配，删除文件并重试一次
            os.remove(local_file_path)
            sftp.get(remote_file_path, local_file_path)
            downloaded_size = os.path.getsize(local_file_path)
            
            if downloaded_size != remote_attr.st_size:
                raise Exception(f"文件大小不匹配: 期望 {remote_attr.st_size}, 实际 {downloaded_size}")
        
        # 保持文件修改时间
        os.utime(local_file_path, (remote_attr.st_atime, remote_attr.st_mtime))
        
        with stats_lock:
            stats['downloaded'] += 1
        return "downloaded"
        
    except Exception as e:
        print(f"  下载失败 {os.path.basename(remote_file_path)}: {e}")
        with stats_lock:
            stats['failed'] += 1
        return "failed"

def download_file_with_new_connection(file_info, stats, stats_lock, 
                                     hostname, port, username, private_key):
    """为多线程创建的下载函数，每个线程有自己的SFTP连接"""
    remote_file_path, local_file_path, remote_attr = file_info
    
    # 为这个线程创建独立的SFTP连接
    ssh_client = paramiko.SSHClient()
    ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    sftp = None
    try:
        ssh_client.connect(hostname, port, username, pkey=private_key, timeout=30)
        sftp = ssh_client.open_sftp()
        
        # 调用原有的下载逻辑
        return download_file(sftp, file_info, stats, stats_lock)
    except Exception as e:
        print(f"  连接失败 {os.path.basename(remote_file_path)}: {e}")
        with stats_lock:
            stats['failed'] += 1
        return "failed"
    finally:
        # 关闭连接
        try:
            if sftp:
                sftp.close()
        except:
            pass
        try:
            ssh_client.close()
        except:
            pass

def main():
    """主函数"""
    try:
        print("=" * 60)
        print("远程文件同步工具 (5线程SFTP + 密钥认证 + Webhook通知)")
        print("=" * 60)
        
        success = sync_remote_to_local()
        
        if success:
            print("\n同步成功!")
            return 0
        else:
            print("\n同步失败!")
            return 1
    except Exception as e:
        print(f"程序发生未捕获异常: {e}")
        import traceback
        traceback.print_exc()
        return 1

if __name__ == "__main__":
    try:
        exit_code = main()
    except KeyboardInterrupt:
        print("\n程序被用户中断")
        exit_code = 1
    except Exception as e:
        print(f"程序发生严重错误: {e}")
        import traceback
        traceback.print_exc()
        exit_code = 1
    
    # 添加延时，确保所有输出都能显示
    time.sleep(1)
    print("\n程序执行完成，即将退出...")
    input("按Enter键退出...")
    sys.exit(exit_code)