import os
import yaml
import subprocess
from typing import Dict, Any

def run_shell_command(command: str, cwd: str = None) -> bool:
    """执行shell命令并返回执行结果"""
    try:
        print(f"执行命令: {command} (工作目录: {cwd or os.getcwd()})")
        result = subprocess.run(
            command,
            cwd=cwd,
            shell=True,
            check=True,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            text=True
        )
        print(f"命令输出: {result.stdout}")
        return True
    except subprocess.CalledProcessError as e:
        print(f"命令执行失败: {e.stderr}")
        return False

def cleanup_dangling_images() -> bool:
    """清除docker虚悬镜像（dangling images）"""
    print("开始清除虚悬镜像...")
    # 清除所有<none>:<none>的虚悬镜像，xargs -r确保无镜像时不执行删除命令
    return run_shell_command('sudo docker images -f "dangling=true" -q | xargs -r sudo docker rmi')

def execute_release_scripts(root_dir: str) -> bool:
    """遍历所有api_目录并执行release.sh脚本（排除api_template）"""
    print("开始执行所有api_目录下的release.sh脚本...")
    
    for dir_name in os.listdir(root_dir):
        # 排除api_template文件夹
        if dir_name == "api_template":
            print(f"跳过模板目录: {dir_name}")
            continue
            
        dir_path = os.path.join(root_dir, dir_name)
        if os.path.isdir(dir_path) and dir_name.startswith('api_'):
            release_script = os.path.join(dir_path, 'release.sh')
            if os.path.exists(release_script):
                print(f"处理目录: {dir_path}")
                
                # 添加执行权限
                if not run_shell_command(f"chmod +x {release_script}", dir_path):
                    print(f"为 {release_script} 添加权限失败，跳过执行")
                    continue
                
                # 执行release.sh
                if not run_shell_command(f"./release.sh", dir_path):
                    print(f"{release_script} 执行失败，跳过后续步骤")
                    return False
            else:
                print(f"{dir_path} 中未找到release.sh，跳过")
    
    print("所有release.sh脚本执行完成")
    return True

def merge_yaml_files(root_dir: str) -> Dict[str, Any]:
    """合并所有 docker-compose 相关 YAML 文件内容（排除api_template）"""
    merged = {
        'version': '3.8',  # 默认使用 3.8 版本
        'services': {},
        'networks': {},
        'volumes': {}
    }

    # 查找所有 docker-compose 相关 YAML 文件
    yaml_files = []
    # 1. 根目录下的 docker-compose.*.yaml
    for file in os.listdir(root_dir):
        if file.startswith('docker-compose.') and file.endswith('.yaml'):
            if file == 'docker-compose.yaml':  # 跳过目标文件本身
                continue
            yaml_files.append(os.path.join(root_dir, file))
    
    # 2. api_ 目录下的 docker-compose.*.yaml（排除api_template）
    for dir_name in os.listdir(root_dir):
        # 排除api_template文件夹
        if dir_name == "api_template":
            print(f"跳过模板目录的yaml文件: {dir_name}")
            continue
            
        dir_path = os.path.join(root_dir, dir_name)
        if os.path.isdir(dir_path) and dir_name.startswith('api_'):
            for file in os.listdir(dir_path):
                if file.startswith('docker-compose.') and file.endswith('.yaml'):
                    yaml_files.append(os.path.join(dir_path, file))

    # 合并所有 YAML 文件内容
    for file_path in yaml_files:
        print(f"合并文件: {file_path}")
        with open(file_path, 'r', encoding='utf-8') as f:
            try:
                data = yaml.safe_load(f)
                if not data:
                    continue
                
                # 合并 services
                if 'services' in data:
                    merged['services'].update(data['services'])
                
                # 合并 networks
                if 'networks' in data:
                    merged['networks'].update(data['networks'])
                
                # 合并 volumes
                if 'volumes' in data:
                    merged['volumes'].update(data['volumes'])
                
                # 保留最高版本号
                if 'version' in data and data['version'] > merged['version']:
                    merged['version'] = data['version']

            except yaml.YAMLError as e:
                print(f"解析 {file_path} 失败: {e}")
                continue

    return merged

def stop_docker_compose(root_dir: str) -> bool:
    """停止docker-compose"""
    print("开始停止docker-compose...")
    compose_file = os.path.join(root_dir, 'docker-compose.yaml')
    if not os.path.exists(compose_file):
        print(f"未找到docker-compose文件: {compose_file}")
        return False
        
    return run_shell_command(f"sudo docker-compose -f {compose_file} down", root_dir)

def start_docker_compose(root_dir: str) -> bool:
    """启动docker-compose"""
    print("开始启动docker-compose...")
    compose_file = os.path.join(root_dir, 'docker-compose.yaml')
    if not os.path.exists(compose_file):
        print(f"未找到docker-compose文件: {compose_file}")
        return False
    
    return run_shell_command(f"sudo docker-compose -f {compose_file} up -d", root_dir)

def main():
    # 先执行清除虚悬镜像操作
    print("部署流程开始，先执行清除虚悬镜像操作...")
    if not cleanup_dangling_images():
        print("清除虚悬镜像失败（非致命错误，继续部署流程）")
    else:
        print("虚悬镜像清除完成")
    
    # 获取项目根目录（deploy.py 所在目录）
    root_dir = os.path.dirname(os.path.abspath(__file__))
    print(f"项目根目录: {root_dir}")
    
    # 1. 执行所有api_目录下的release.sh脚本
    if not execute_release_scripts(root_dir):
        print("执行release脚本失败，终止部署流程")
        return
    
    # 2. 合并所有YAML文件
    merged_data = merge_yaml_files(root_dir)
    
    # 输出到根目录的docker-compose.yaml
    output_path = os.path.join(root_dir, 'docker-compose.yaml')
    with open(output_path, 'w', encoding='utf-8') as f:
        yaml.dump(
            merged_data,
            f,
            sort_keys=False,  # 保持键的顺序
            allow_unicode=True,  # 支持中文
            default_flow_style=False  # 使用块样式
        )
    print(f"已生成合并后的 docker-compose.yaml: {output_path}")
    
    # 3. 启动docker-compose
    stop_docker_compose(root_dir)
    if not start_docker_compose(root_dir):
        print("启动docker-compose失败")
        return

    print("部署流程完成")
    print("\n===== 清理虚悬镜像 =====")
    if not cleanup_dangling_images():
        print("清除虚悬镜像失败（非致命错误，继续部署流程）")
    else:
        print("虚悬镜像清除完成")

if __name__ == "__main__":
    # 需要安装 pyyaml 库: pip install pyyaml
    main()