package devcontainer

import (
	"context"
	"fmt"
	"io/ioutil"
	"net/url"
	"os"
	"path/filepath"
	"regexp"
	"strings"
	"time"

	auth_model "code.gitea.io/gitea/models/auth"
	"code.gitea.io/gitea/models/db"
	devcontainer_model "code.gitea.io/gitea/models/devcontainer"
	devcontainer_models_errors "code.gitea.io/gitea/models/devcontainer/errors"
	user_model "code.gitea.io/gitea/models/user"
	"code.gitea.io/gitea/modules/docker"
	devcontainer_k8s_agent_module "code.gitea.io/gitea/modules/k8s"
	"code.gitea.io/gitea/modules/log"
	"code.gitea.io/gitea/modules/setting"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	gitea_context "code.gitea.io/gitea/services/context"
	devcontainer_service_errors "code.gitea.io/gitea/services/devcontainer/errors"

	"code.gitea.io/gitea/services/devstar_ssh_key_pair/api_service"
	"github.com/google/uuid"
	"xorm.io/builder"
)

// 封装查询 DevContainer 实时信息，与具体 agent 无关，返回前端
type OpenDevcontainerAbstractAgent struct {
	NodePortAssigned uint16
}

// OpenDevcontainerService 获取 DevContainer 连接信息，抽象方法，适配多种 DevContainer Agent
func OpenDevcontainerService(ctx *gitea_context.Context, opts *OpenDevcontainerAppDispatcherOptions) (*OpenDevcontainerAbstractAgent, error) {
	log.Info("OpenDevcontainerService: 开始获取 DevContainer 连接信息 name=%s, wait=%v",
		opts.Name, opts.Wait)

	// 0. 检查参数
	if ctx == nil || opts == nil || len(opts.Name) == 0 {
		log.Error("OpenDevcontainerService: 参数无效 ctx=%v, opts=%v", ctx != nil, opts != nil)
		return nil, devcontainer_service_errors.ErrIllegalParams{
			FieldNameList: []string{"ctx", "opts.Name"},
		}
	}

	// 1. 检查 DevContainer 功能是否开启
	if setting.Devcontainer.Enabled == false {
		log.Warn("OpenDevcontainerService: DevContainer 功能已全局关闭")
		return nil, devcontainer_service_errors.ErrOperateDevcontainer{
			Action:  "check availability of DevStar DevContainer",
			Message: "DevContainer is turned off globally",
		}
	}

	// 2. 根据 DevContainer Agent 类型分发任务
	apiRequestContext := ctx.Req.Context()
	openDevcontainerAbstractAgentVO := &OpenDevcontainerAbstractAgent{}
	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		log.Info("OpenDevcontainerService: 使用 K8s Agent 获取 DevContainer: %s", opts.Name)
		devcontainerApp, err := AssignDevcontainerGetting2K8sOperator(&apiRequestContext, opts)
		if err != nil {
			log.Error("OpenDevcontainerService: K8s DevContainer 获取失败: %v", err)
			return nil, devcontainer_service_errors.ErrOperateDevcontainer{
				Action:  "Open DevContainer in k8s",
				Message: err.Error(),
			}
		}
		openDevcontainerAbstractAgentVO.NodePortAssigned = devcontainerApp.Status.NodePortAssigned
		log.Info("OpenDevcontainerService: K8s DevContainer 获取成功, name=%s, nodePort=%d, ready=%v",
			opts.Name, devcontainerApp.Status.NodePortAssigned, devcontainerApp.Status.Ready)
	case setting.DOCKER:
		port, err := GetDevcontainer(&apiRequestContext, opts)
		log.Info("port %d", port)
		if err != nil {
			return nil, devcontainer_service_errors.ErrOperateDevcontainer{
				Action:  "Open DevContainer in docker",
				Message: err.Error(),
			}
		}
		openDevcontainerAbstractAgentVO.NodePortAssigned = port
	default:
		log.Error("OpenDevcontainerService: 未知的 DevContainer Agent 类型: %s", setting.Devcontainer.Agent)
		return nil, devcontainer_service_errors.ErrOperateDevcontainer{
			Action:  "Open DevContainer",
			Message: "No Valid DevContainer Agent Found",
		}
	}

	// 3. 封装返回结果
	log.Info("OpenDevcontainerService: 获取 DevContainer 连接信息完成, nodePort=%d",
		openDevcontainerAbstractAgentVO.NodePortAssigned)
	return openDevcontainerAbstractAgentVO, nil
}

// GetRepoDevcontainerDetails 获取仓库对应 DevContainer 信息
func GetRepoDevcontainerDetails(ctx context.Context, opts *RepoDevcontainerOptions) (RepoDevContainer, error) {
	log.Info("GetRepoDevcontainerDetails: 开始查询仓库 DevContainer 信息")

	// 0. 构造异常返回时候的空数据
	resultRepoDevcontainerDetail := RepoDevContainer{}

	// 1. 检查参数是否有效
	if opts == nil || opts.Actor == nil || opts.Repository == nil {
		log.Error("GetRepoDevcontainerDetails: 参数无效 opts=%v, actor=%v, repo=%v",
			opts != nil, opts != nil && opts.Actor != nil, opts != nil && opts.Repository != nil)
		return resultRepoDevcontainerDetail, devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
			Action:  "construct query condition for devContainer user list",
			Message: "invalid search condition",
		}
	}

	log.Info("GetRepoDevcontainerDetails: 查询用户=%s (ID=%d) 的仓库=%s (ID=%d) 的 DevContainer",
		opts.Actor.Name, opts.Actor.ID, opts.Repository.Name, opts.Repository.ID)

	// 2. 查询数据库
	_, err := db.GetEngine(ctx).
		Table("devcontainer").
		Select(""+
			"devcontainer.id                                   AS devcontainer_id,"+
			"devcontainer.name                                 AS devcontainer_name,"+
			"devcontainer.devcontainer_host                    AS devcontainer_host,"+
			"devcontainer.devcontainer_port                    AS devcontainer_port,"+
			"devcontainer.devcontainer_username                AS devcontainer_username,"+
			"devcontainer.devcontainer_work_dir                AS devcontainer_work_dir,"+
			"devcontainer.repo_id                              AS repo_id,"+
			"devcontainer.user_id                              AS user_id,"+
			"repository.name                                           AS repo_name,"+
			"repository.owner_name                                     AS repo_owner_name,"+
			"repository.description                                    AS repo_description,"+
			"CONCAT('/', repository.owner_name, '/', repository.name)  AS repo_link").
		Join("INNER", "repository", "devcontainer.repo_id = repository.id").
		Where("devcontainer.user_id = ? AND devcontainer.repo_id = ?", opts.Actor.ID, opts.Repository.ID).
		Get(&resultRepoDevcontainerDetail)

	// 3. 返回
	if err != nil {
		log.Error("GetRepoDevcontainerDetails: 数据库查询失败: %v", err)
		return resultRepoDevcontainerDetail, devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
			Action:  fmt.Sprintf("query devcontainer with repo '%v' and username '%v'", opts.Repository.Name, opts.Actor.Name),
			Message: err.Error(),
		}
	}
	return resultRepoDevcontainerDetail, nil
}

// CreateRepoDevcontainer 创建 DevContainer
/*
   必要假设：前置中间件已完成检查，确保数据有效：
   - 当前用户为已登录用户
   - 当前用户拥有 repo code写入权限
   - 数据库此前不存在 该用户在该repo创建的 Dev Container
*/
func CreateRepoDevcontainer(ctx context.Context, opts *CreateRepoDevcontainerOptions) error {
	username := opts.Actor.Name
	repoName := opts.Repository.Name

	log.Info("CreateRepoDevcontainer: 开始创建 DevContainer, user=%s, repo=%s, repoID=%d",
		username, repoName, opts.Repository.ID)

	// unixTimestamp is the number of seconds elapsed since January 1, 1970 UTC.
	unixTimestamp := time.Now().Unix()

	log.Info("CreateRepoDevcontainer: 获取 DevContainer JSON 模型")
	devContainerJson, err := GetDevcontainerJsonModel(ctx, opts.Repository)
	if err != nil {
		log.Error("CreateRepoDevcontainer: 获取 DevContainer JSON 失败: %v", err)
		return devcontainer_service_errors.ErrOperateDevcontainer{
			Action:  "Get DevContainer Error",
			Message: err.Error(),
		}
	}
	log.Info("CreateRepoDevcontainer: DevContainer JSON 获取成功, image=%s, dockerfilePath=%s",
		devContainerJson.Image, devContainerJson.DockerfilePath)

	var dockerfileContent string
	if devContainerJson.DockerfilePath != "" {
		log.Info("CreateRepoDevcontainer: 获取 Dockerfile 内容, path=%s", devContainerJson.DockerfilePath)
		dockerfileContent, err = GetDockerfileContent(ctx, opts.Repository)
		if err != nil {
			log.Error("CreateRepoDevcontainer: 获取 Dockerfile 内容失败: %v", err)
			return devcontainer_service_errors.ErrOperateDevcontainer{
				Action:  "Get DockerFileContent Error",
				Message: err.Error(),
			}
		}
		log.Debug("CreateRepoDevcontainer: Dockerfile 内容获取成功, 长度=%d", len(dockerfileContent))
	}

	cfg, err := setting.NewConfigProviderFromFile(setting.CustomConf)
	if err != nil {
		log.Error("CreateRepoDevcontainer: 加载配置文件失败: %v", err)
	}

	containerName := getSanitizedDevcontainerName(username, repoName)
	log.Info("CreateRepoDevcontainer: 生成 DevContainer 名称: %s", containerName)

	newDevcontainer := &CreateDevcontainerDTO{
		Devcontainer: devcontainer_model.Devcontainer{
			Name:                 containerName,
			DevcontainerHost:     cfg.Section("server").Key("DOMAIN").Value(),
			DevcontainerUsername: "root",
			DevcontainerWorkDir:  "/data/workspace",
			RepoId:               opts.Repository.ID,
			UserId:               opts.Actor.ID,
			CreatedUnix:          unixTimestamp,
			UpdatedUnix:          unixTimestamp,
		},
		DockerfileContent: dockerfileContent,
		Image:             devContainerJson.Image,
		GitRepositoryURL:  strings.TrimSuffix(setting.AppURL, "/") + opts.Repository.Link(),
	}
	log.Info("CreateRepoDevcontainer: 初始化 DevContainer 对象, host=%s, workDir=%s, gitURL=%s",
		newDevcontainer.DevcontainerHost, newDevcontainer.DevcontainerWorkDir, newDevcontainer.GitRepositoryURL)

	// 在数据库事务中创建 Dev Container 分配资源，出错时自动回滚相对应数据库字段，保证数据一致
	dbTransactionErr := db.WithTx(ctx, func(ctx context.Context) error {
		var err error
		log.Info("CreateRepoDevcontainer: 开始数据库事务")

		// 0. 查询数据库，收集用户 SSH 公钥，合并用户临时填入SSH公钥
		log.Info("CreateRepoDevcontainer: 查询用户 SSH 公钥, userID=%d", opts.Actor.ID)
		var userSSHPublicKeyList []string
		err = db.GetEngine(ctx).
			Table("public_key").
			Select("content").
			Where("owner_id = ?", opts.Actor.ID).
			Find(&userSSHPublicKeyList)
		if err != nil {
			log.Error("CreateRepoDevcontainer: 查询用户 SSH 公钥失败: %v", err)
			return devcontainer_service_errors.ErrOperateDevcontainer{
				Action:  fmt.Sprintf("query SSH Public Key List for User %s", opts.Actor.Name),
				Message: err.Error(),
			}
		}
		log.Info("CreateRepoDevcontainer: 找到用户 SSH 公钥 %d 个", len(userSSHPublicKeyList))

		newDevcontainer.SSHPublicKeyList = append(userSSHPublicKeyList, opts.SSHPublicKeyList...)
		log.Info("CreateRepoDevcontainer: 合并 SSH 公钥后共 %d 个", len(newDevcontainer.SSHPublicKeyList))

		devstarPublicKey := getDevStarPublicKey()
		if devstarPublicKey == "" {
			log.Error("CreateRepoDevcontainer: 获取 DevStar SSH 公钥失败")
			return devcontainer_service_errors.ErrOperateDevcontainer{
				Action:  fmt.Sprintf("devstar SSH Public Key Error "),
				Message: err.Error(),
			}
		}
		log.Info("CreateRepoDevcontainer: 获取 DevStar SSH 公钥成功")
		newDevcontainer.SSHPublicKeyList = append(newDevcontainer.SSHPublicKeyList)

		// 1. 调用 k8s Agent，创建 DevContainer 资源，同时更新k8s调度器分配的 NodePort
		if setting.Devcontainer.Agent == setting.KUBERNETES || setting.Devcontainer.Agent == "k8s" {
			log.Info("CreateRepoDevcontainer: 调用 K8s controller 创建 DevContainer 资源")
		}

		err = claimDevcontainerResource(&ctx, newDevcontainer, devContainerJson)
		if err != nil {
			if setting.Devcontainer.Agent == setting.KUBERNETES || setting.Devcontainer.Agent == "k8s" {
				log.Error("CreateRepoDevcontainer: K8s controller 创建失败: %v", err)
			}
			return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
				Action:  fmt.Sprintf("claim resource for Dev Container %v", newDevcontainer),
				Message: err.Error(),
			}
		}

		if setting.Devcontainer.Agent == setting.KUBERNETES || setting.Devcontainer.Agent == "k8s" {
			log.Info("CreateRepoDevcontainer: K8s controller 创建成功, nodePort=%d", newDevcontainer.DevcontainerPort)
		}

		// 2. 根据分配的 NodePort 更新数据库字段
		log.Info("CreateRepoDevcontainer: 在数据库中创建 DevContainer 记录, nodePort=%d",
			newDevcontainer.DevcontainerPort)
		rowsAffect, err := db.GetEngine(ctx).
			Table("devcontainer").
			Insert(newDevcontainer.Devcontainer)
		if err != nil {
			log.Error("CreateRepoDevcontainer: 数据库插入失败: %v", err)
			return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
				Action:  fmt.Sprintf("insert new DevContainer for user '%s' in repo '%s'", username, repoName),
				Message: err.Error(),
			}
		} else if rowsAffect == 0 {
			log.Error("CreateRepoDevcontainer: 数据库插入失败: 影响行数为0")
			return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
				Action:  fmt.Sprintf("insert new DevContainer for user '%s' in repo '%s'", username, repoName),
				Message: "expected 1 row to be inserted, but got 0",
			}
		}
		log.Info("CreateRepoDevcontainer: 数据库插入成功, 影响行数=%d", rowsAffect)
		return nil
	})

	if dbTransactionErr != nil {
		log.Error("CreateRepoDevcontainer: 创建失败: %v", dbTransactionErr)
		return dbTransactionErr
	}

	log.Info("CreateRepoDevcontainer: DevContainer 创建成功, name=%s", newDevcontainer.Name)
	return nil
}
func getDevStarPublicKey() string {
	// 获取当前用户的主目录
	homeDir, err := os.UserHomeDir()
	if err != nil {
		log.Info("Failed to get home directory: %s", err)
	}

	// 构建公钥文件的路径
	publicKeyPath := filepath.Join(homeDir, ".ssh", "id_rsa_devstar.pub")
	privateKeyPath := filepath.Join(homeDir, ".ssh", "id_rsa_devstar")
	if !fileExists(publicKeyPath) || !fileExists(privateKeyPath) {
		err, key := api_service.GenerateNewRSASSHSessionKeyPair()
		if err != nil {
			log.Info("无法创建密钥:", err)
			return ""
		}
		// 确保~/.ssh目录存在
		sshDir := filepath.Join(homeDir, ".ssh")
		if err := os.MkdirAll(sshDir, 0700); err != nil {
			log.Info("无法创建~/.ssh目录:", err)
			return ""
		}
		// 创建密钥文件
		if err := ioutil.WriteFile(privateKeyPath, []byte(key.PrivateKeyPEM), 0600); err != nil {
			log.Info("无法写入私钥文件:", err)
			return ""
		}
		if err := ioutil.WriteFile(publicKeyPath, []byte(key.PublicKeySsh), 0600); err != nil {
			log.Info("无法写入公钥文件:", err)
			return ""
		}
	}
	// 读取公钥文件内容
	publicKeyBytes, err := ioutil.ReadFile(publicKeyPath)
	if err != nil {
		log.Info("Failed to read public key file: %s", err)
		return ""
	}

	// 将文件内容转换为字符串
	return string(publicKeyBytes)
}
func fileExists(filename string) bool {
	info, err := os.Stat(filename)
	if os.IsNotExist(err) {
		return false
	}
	return !info.IsDir()
}
func GetWebTerminalURL(ctx context.Context, devcontainerName string) (string, error) {
	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		log.Info("GetWebTerminalURL: 开始查找 K8s DevContainer ttyd 端口, name=%s", devcontainerName)

		// 创建 K8s 客户端，直接查询 CRD 以获取 ttyd 端口
		k8sClient, err := devcontainer_k8s_agent_module.GetKubernetesClient(&ctx)
		if err != nil {
			log.Error("GetWebTerminalURL: 获取 K8s 客户端失败: %v", err)
			return "", err
		}
		log.Info("GetWebTerminalURL: K8s 客户端创建成功")

		// 直接从K8s获取CRD信息，不依赖数据库
		opts := &devcontainer_k8s_agent_module.GetDevcontainerOptions{
			GetOptions: metav1.GetOptions{},
			Name:       devcontainerName,
			Namespace:  setting.Devcontainer.Namespace,
			Wait:       false,
		}
		log.Info("GetWebTerminalURL: 从 K8s 获取 DevcontainerApp %s, namespace=%s",
			devcontainerName, setting.Devcontainer.Namespace)

		devcontainerApp, err := devcontainer_k8s_agent_module.GetDevcontainer(&ctx, k8sClient, opts)
		if err != nil {
			log.Error("GetWebTerminalURL: 获取 DevcontainerApp 失败: %v", err)
			return "", err
		}
		log.Info("GetWebTerminalURL: 成功获取 DevcontainerApp, extraPorts=%d",
			len(devcontainerApp.Status.ExtraPortsAssigned))

		// 在额外端口中查找 ttyd 端口，使用多个条件匹配
		var ttydNodePort uint16 = 0
		for _, portInfo := range devcontainerApp.Status.ExtraPortsAssigned {
			// 检查各种可能的情况：名称为ttyd、名称包含ttyd、名称为port-7681、端口为7681
			log.Debug("GetWebTerminalURL: 检查端口 name=%s, containerPort=%d, nodePort=%d",
				portInfo.Name, portInfo.ContainerPort, portInfo.NodePort)

			if portInfo.Name == "ttyd" ||
				strings.Contains(portInfo.Name, "ttyd") ||
				portInfo.Name == "port-7681" ||
				portInfo.ContainerPort == 7681 {
				ttydNodePort = portInfo.NodePort
				log.Info("GetWebTerminalURL: 找到 ttyd 端口: %d, 名称: %s", ttydNodePort, portInfo.Name)
				break
			}
		}

		// 如果找到 ttyd 端口，构建 URL
		if ttydNodePort > 0 {
			cfg, err := setting.NewConfigProviderFromFile(setting.CustomConf)
			if err != nil {
				log.Error("GetWebTerminalURL: 加载配置文件失败: %v", err)
				return "", err
			}

			// 检查是否启用了基于路径的访问方式

			domain := cfg.Section("server").Key("DOMAIN").Value()
			scheme := "https"

			// 从容器名称中提取用户名和仓库名
			parts := strings.Split(devcontainerName, "-")
			if len(parts) >= 2 {
				username := parts[0]
				repoName := parts[1]

				// 构建访问路径
				path := fmt.Sprintf("/%s/%s/dev-container-webterminal", username, repoName)
				terminalURL := fmt.Sprintf("%s://%s%s", scheme, domain, path)

				log.Info("GetWebTerminalURL: 使用 Ingress 路径方式生成 ttyd URL: %s", terminalURL)
				return terminalURL, nil
			}
		}

		// 如果没有找到ttyd端口，记录详细的调试信息
		log.Warn("GetWebTerminalURL: 未找到 ttyd 端口 (7681), 可用的额外端口: %v",
			devcontainerApp.Status.ExtraPortsAssigned)
		return "", fmt.Errorf("ttyd port (7681) not found for container: %s", devcontainerName)
	case setting.DOCKER:
		cli, err := docker.CreateDockerClient(&ctx)
		if err != nil {
			return "", err
		}
		defer cli.Close()
		containerID, err := docker.GetContainerID(cli, devcontainerName)
		if err != nil {
			return "", err
		}
		port, err := docker.GetMappedPort(cli, containerID, "7681")
		if err != nil {
			return "", err
		}
		cfg, err := setting.NewConfigProviderFromFile(setting.CustomConf)
		if err != nil {
			log.Error("Failed to load custom conf '%s': %v", setting.CustomConf, err)
			return "", err
		}
		return "http://" + cfg.Section("server").Key("DOMAIN").Value() + ":" + port + "/", nil
	default:
		return "", fmt.Errorf("unknown agent")
	}
}
func Get_IDE_TerminalURL(ctx *gitea_context.Context, devcontainer *RepoDevContainer) (string, error) {
	var access_token string

	// 检查 session 中是否已存在 token
	if ctx.Session.Get("access_token") != nil {
		access_token = ctx.Session.Get("access_token").(string)
	} else {
		// 生成 token
		token := &auth_model.AccessToken{
			UID:  devcontainer.UserId,
			Name: "terminal_login_token",
		}
		exist, err := auth_model.AccessTokenByNameExists(ctx, token)
		if err != nil {
			return "", err
		}
		if exist {
			db.GetEngine(ctx).Table("access_token").Where("uid = ? AND name = ?", devcontainer.UserId, "terminal_login_token").Delete()
		}
		scope, err := auth_model.AccessTokenScope(strings.Join([]string{"write:user", "write:repository"}, ",")).Normalize()
		if err != nil {
			return "", err
		}
		token.Scope = scope
		err = auth_model.NewAccessToken(db.DefaultContext, token)
		if err != nil {
			return "", err
		}
		ctx.Session.Set("terminal_login_token", token.Token)
		access_token = token.Token
	}

	// 根据不同的代理类型获取 SSH 端口
	var port string

	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		// 创建 K8s 客户端
		apiRequestContext := ctx.Req.Context()
		k8sClient, err := devcontainer_k8s_agent_module.GetKubernetesClient(&apiRequestContext)
		if err != nil {
			log.Error("Get_IDE_TerminalURL: 创建 K8s 客户端失败: %v", err)
			return "", err
		}

		// 获取 DevcontainerApp 资源
		opts := &devcontainer_k8s_agent_module.GetDevcontainerOptions{
			GetOptions: metav1.GetOptions{},
			Name:       devcontainer.DevContainerName,
			Namespace:  setting.Devcontainer.Namespace,
			Wait:       false,
		}

		log.Info("Get_IDE_TerminalURL: 从 K8s 获取 DevcontainerApp %s, namespace=%s",
			devcontainer.DevContainerName, setting.Devcontainer.Namespace)

		devcontainerApp, err := devcontainer_k8s_agent_module.GetDevcontainer(&apiRequestContext, k8sClient, opts)
		if err != nil {
			log.Error("Get_IDE_TerminalURL: 获取 DevcontainerApp 失败: %v", err)
			return "", err
		}

		// 使用 NodePort 作为 SSH 端口
		port = fmt.Sprintf("%d", devcontainerApp.Status.NodePortAssigned)
		log.Info("Get_IDE_TerminalURL: K8s 环境使用 NodePort %s 作为 SSH 端口", port)

	case setting.DOCKER:
		// 原有 Docker 处理逻辑
		defalut_ctx := context.Background()
		cli, err := docker.CreateDockerClient(&defalut_ctx)
		if err != nil {
			return "", err
		}
		defer cli.Close()

		containerID, err := docker.GetContainerID(cli, devcontainer.DevContainerName)
		if err != nil {
			return "", err
		}

		mappedPort, err := docker.GetMappedPort(cli, containerID, "22")
		if err != nil {
			return "", err
		}
		port = mappedPort

	default:
		return "", fmt.Errorf("不支持的 DevContainer Agent 类型: %s", setting.Devcontainer.Agent)
	}

	// 构建并返回 URL
	return "://mengning.devstar/" +
		"openProject?host=" + devcontainer.DevContainerHost +
		"&port=" + port +
		"&username=" + devcontainer.DevContainerUsername +
		"&path=" + devcontainer.DevContainerWorkDir +
		"&access_token=" + access_token +
		"&devstar_username=" + devcontainer.RepoOwnerName, nil
}

func AddPublicKeyToAllRunningDevContainer(ctx context.Context, user *user_model.User, publicKey string) error {
	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		return fmt.Errorf("unsupported agent")
	case setting.DOCKER:
		cli, err := docker.CreateDockerClient(&ctx)
		if err != nil {
			return err
		}
		defer cli.Close()

		// 查询所有打开的容器
		opts := &SearchUserDevcontainerListItemVoOptions{
			Actor: user,
		}
		userDevcontainersVO, err := GetUserDevcontainersList(ctx, opts)
		if err != nil {
			return err
		}

		repoDevContainerlist := userDevcontainersVO.DevContainers
		if len(repoDevContainerlist) > 0 {
			// 将公钥写入这些打开的容器中
			for _, repoDevContainer := range repoDevContainerlist {
				containerID, err := docker.GetContainerID(cli, repoDevContainer.DevContainerName)
				if err != nil {
					return err
				}
				log.Info("container id: %s, name: %s", containerID, repoDevContainer.DevContainerName)
				// 检查容器状态
				containerStatus, err := docker.GetContainerStatus(cli, containerID)
				if err != nil {
					continue
				}

				if containerStatus == "running" {
					// 只为处于运行状态的容器添加公钥
					_, err = docker.ExecCommandInContainer(&ctx, cli, containerID, fmt.Sprintf("echo '%s' >> ~/.ssh/authorized_keys", publicKey))
					if err != nil {
						return err
					}
				}
			}
		}
		return nil
	default:
		return fmt.Errorf("unknown agent")
	}
}

// DeleteRepoDevcontainer 按照 仓库 和/或 用户信息删除 DevContainer(s)
func DeleteRepoDevcontainer(ctx context.Context, opts *RepoDevcontainerOptions) error {
	log.Info("DeleteRepoDevcontainer: 开始删除 DevContainer")

	if ctx == nil || opts == nil || (opts.Actor == nil && opts.Repository == nil) {
		log.Error("DeleteRepoDevcontainer: 参数无效 ctx=%v, opts=%v, actor=%v, repo=%v",
			ctx != nil, opts != nil,
			opts != nil && opts.Actor != nil,
			opts != nil && opts.Repository != nil)
		return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
			Action:  "construct query parameters",
			Message: "Invalid parameters",
		}
	}

	// 1. 构造查询条件
	sqlDevcontainerCondition := builder.NewCond()
	if opts.Actor != nil {
		sqlDevcontainerCondition = sqlDevcontainerCondition.And(builder.Eq{"user_id": opts.Actor.ID})
		log.Info("DeleteRepoDevcontainer: 添加用户条件, userID=%d", opts.Actor.ID)
	}
	if opts.Repository != nil {
		sqlDevcontainerCondition = sqlDevcontainerCondition.And(builder.Eq{"repo_id": opts.Repository.ID})
		log.Info("DeleteRepoDevcontainer: 添加仓库条件, repoID=%d", opts.Repository.ID)
	}

	log.Info("DeleteRepoDevcontainer: 查询条件构建完成: %v", sqlDevcontainerCondition)
	var devcontainersList []devcontainer_model.Devcontainer

	// 2. 开启事务：先获取 devcontainer列表，后删除
	dbTransactionErr := db.WithTx(ctx, func(ctx context.Context) error {
		var err error
		log.Info("DeleteRepoDevcontainer: 开始数据库事务")

		// 2.1 条件查询： user_id 和/或 repo_id
		log.Info("DeleteRepoDevcontainer: 查询符合条件的 DevContainer")
		err = db.GetEngine(ctx).
			Table("devcontainer").
			Where(sqlDevcontainerCondition).
			Find(&devcontainersList)
		if err != nil {
			log.Error("DeleteRepoDevcontainer: 查询失败: %v", err)
			return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
				Action:  fmt.Sprintf("find devcontainer(s) with condition '%v'", sqlDevcontainerCondition),
				Message: err.Error(),
			}
		}
		log.Info("DeleteRepoDevcontainer: 找到 %d 个符合条件的 DevContainer", len(devcontainersList))

		// 2.2 空列表，直接结束事务（由于前一个操作只是查询，所以回滚事务不会导致数据不一致问题）
		if len(devcontainersList) == 0 {
			log.Warn("DeleteRepoDevcontainer: 未找到符合条件的 DevContainer")
			return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
				Action:  fmt.Sprintf("find devcontainer(s) with condition '%v'", sqlDevcontainerCondition),
				Message: "No DevContainer found",
			}
		}

		// 2.3 条件删除： user_id 和/或 repo_id
		log.Info("DeleteRepoDevcontainer: 从数据库删除 DevContainer 记录")
		rowsAffected, err := db.GetEngine(ctx).
			Table("devcontainer").
			Where(sqlDevcontainerCondition).
			Delete()
		if err != nil {
			log.Error("DeleteRepoDevcontainer: 删除 DevContainer 记录失败: %v", err)
			return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
				Action:  fmt.Sprintf("MARK devcontainer(s) as DELETED with condition '%v'", sqlDevcontainerCondition),
				Message: err.Error(),
			}
		}
		log.Info("DeleteRepoDevcontainer: DevContainer 记录删除成功, 影响行数=%d", rowsAffected)

		// 删除对应的输出记录
		log.Info("DeleteRepoDevcontainer: 删除 DevContainer 输出记录")
		outputRowsAffected, err := db.GetEngine(ctx).
			Table("devcontainer_output").
			Where(sqlDevcontainerCondition).
			Delete()
		if err != nil {
			log.Error("DeleteRepoDevcontainer: 删除输出记录失败: %v", err)
			return err
		}
		log.Info("DeleteRepoDevcontainer: DevContainer 输出记录删除成功, 影响行数=%d", outputRowsAffected)

		return nil
	})

	if dbTransactionErr != nil {
		log.Error("DeleteRepoDevcontainer: 数据库操作失败: %v", dbTransactionErr)
		return dbTransactionErr
	}

	// 3. 后台启动一个goroutine慢慢回收 Dev Container 资源 (如果回收失败，将会产生孤儿 Dev Container，只能管理员手动识别、删除)
	log.Info("DeleteRepoDevcontainer: 启动异步资源回收, DevContainer数量=%d", len(devcontainersList))
	go func() {
		// 注意：由于执行删除 k8s 资源 与 数据库交互和Web页面更新是异步的，因此在 goroutine 中必须重新创建 context，否则报错：
		//      Delete "https://192.168.49.2:8443/apis/devcontainer.devstar.cn/v1/...": context canceled
		isolatedContextToPurgeK8sResource, cancelFunc := context.WithCancel(context.Background())
		defer cancelFunc()

		err := purgeDevcontainersResource(&isolatedContextToPurgeK8sResource, &devcontainersList)
		if err != nil {
			log.Error("DeleteRepoDevcontainer: 异步资源回收失败: %v", err)
		}
	}()

	log.Info("DeleteRepoDevcontainer: DevContainer 删除操作完成")
	return dbTransactionErr
}

// getSanitizedDevcontainerName 辅助获取当前用户在当前仓库创建的 devContainer名称
// DevContainer命名规则： 用户名、仓库名各由小于15位的小写字母和数字组成，中间使用'-'分隔，后面使用'-'分隔符拼接32位UUID小写字母数字字符串
func getSanitizedDevcontainerName(username, repoName string) string {
	regexpNonAlphaNum := regexp.MustCompile(`[^a-zA-Z0-9]`)
	sanitizedUsername := regexpNonAlphaNum.ReplaceAllString(username, "")
	sanitizedRepoName := regexpNonAlphaNum.ReplaceAllString(repoName, "")
	if len(sanitizedUsername) > 15 {
		sanitizedUsername = strings.ToLower(sanitizedUsername[:15])
	}
	if len(sanitizedRepoName) > 31 {
		sanitizedRepoName = strings.ToLower(sanitizedRepoName[:31])
	}
	newUUID, _ := uuid.NewUUID()
	uuidStr := newUUID.String()
	uuidStr = regexpNonAlphaNum.ReplaceAllString(uuidStr, "")[:15]
	return fmt.Sprintf("%s-%s-%s", sanitizedUsername, sanitizedRepoName, uuidStr)
}

// purgeDevcontainersResource 辅助函数，用于goroutine后台执行，回收DevContainer资源
func purgeDevcontainersResource(ctx *context.Context, devcontainersList *[]devcontainer_model.Devcontainer) error {
	// 1. 检查 DevContainer 功能是否启用，若禁用，则直接结束，不会真正执行删除操作
	if !setting.Devcontainer.Enabled {
		log.Warn("purgeDevcontainersResource: DevContainer 功能已全局禁用, 跳过资源回收")
		// 如果用户设置禁用 DevContainer，无法删除资源，会直接忽略，而数据库相关记录会继续清空、不会发生回滚
		log.Warn("Orphan DevContainers in namespace `%s` left undeleted: %v", setting.Devcontainer.Namespace, devcontainersList)
		return nil
	}

	// 2. 根据配置文件中指定的 DevContainer Agent 派遣创建任务
	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		log.Info("purgeDevcontainersResource: 调用 K8s Operator 删除 %d 个资源", len(*devcontainersList))
		err := AssignDevcontainerDeletion2K8sOperator(ctx, devcontainersList)
		if err != nil {
			log.Error("purgeDevcontainersResource: K8s 资源删除失败: %v", err)
		} else {
			log.Info("purgeDevcontainersResource: K8s 资源删除成功")
		}
		return err
	case setting.DOCKER:
		return DeleteDevcontainer(ctx, devcontainersList)
	default:
		// 未知 Agent，直接报错
		return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
			Action:  "dispatch DevContainer deletion",
			Message: fmt.Sprintf("unknown DevContainer agent `%s`, please check your config files", setting.Devcontainer.Agent),
		}
	}
}

// claimDevcontainerResource 分发创建 DevContainer 任务到配置文件指定的执行器
func claimDevcontainerResource(ctx *context.Context, newDevContainer *CreateDevcontainerDTO, devContainerJSON *DevStarJSON) error {
	log.Info("claimDevcontainerResource: 开始分发 DevContainer 创建任务, name=%s", newDevContainer.Name)

	// 1. 检查 DevContainer 功能是否启用，若禁用，则直接结束
	if !setting.Devcontainer.Enabled {
		log.Error("claimDevcontainerResource: DevContainer 功能已全局禁用")
		return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
			Action:  "Check for DevContainer functionality switch",
			Message: "DevContainer is disabled globally, please check your configuration files",
		}
	}

	// 解析仓库 URL
	parsedURL, err := url.Parse(newDevContainer.GitRepositoryURL)
	if err != nil {
		log.Info("解析仓库URL失败: %v", err)
		return err
	}
	hostParts := strings.Split(parsedURL.Host, ":")
	port := ""
	if len(hostParts) > 1 {
		port = hostParts[1]
	}
	newHost := "host.docker.internal"
	if port != "" {
		newHost += ":" + port
	}
	parsedURL.Host = newHost
	// 生成git仓库的 URL
	newURL := parsedURL.String()

	// Read the init script from file
	var initializeScriptContent, restartScriptContent []byte
	_, err = os.Stat("devcontainer_init.sh")
	if os.IsNotExist(err) {
		_, err = os.Stat("/app/gitea/devcontainer_init.sh")
		if os.IsNotExist(err) {
			return fmt.Errorf("读取初始化脚本失败: %v", err)
		} else {
			initializeScriptContent, err = os.ReadFile("/app/gitea/devcontainer_init.sh")
			if err != nil {
				return fmt.Errorf("读取初始化脚本失败: %v", err)
			}
		}
	} else {
		initializeScriptContent, err = os.ReadFile("devcontainer_init.sh")
		if err != nil {
			return fmt.Errorf("读取初始化脚本失败: %v", err)
		}
	}
	_, err = os.Stat("devcontainer_restart.sh")
	if os.IsNotExist(err) {
		_, err = os.Stat("/app/gitea/devcontainer_restart.sh")
		if os.IsNotExist(err) {
			return fmt.Errorf("读取初始化脚本失败: %v", err)
		} else {
			restartScriptContent, err = os.ReadFile("/app/gitea/devcontainer_restart.sh")
			if err != nil {
				return fmt.Errorf("读取初始化脚本失败: %v", err)
			}
		}
	} else {
		restartScriptContent, err = os.ReadFile("devcontainer_restart.sh")
		if err != nil {
			return fmt.Errorf("读取初始化脚本失败: %v", err)
		}
	}

	cfg, err := setting.NewConfigProviderFromFile(setting.CustomConf)
	if err != nil {
		log.Error("Failed to load custom conf '%s': %v", setting.CustomConf, err)
		return err
	}

	initializeScript := strings.ReplaceAll(string(initializeScriptContent), "$AUTHORIZED_KEYS", strings.Join(newDevContainer.SSHPublicKeyList, "\n"))
	initializeScript = strings.ReplaceAll(initializeScript, "$HOST_DOCKER_INTERNAL", cfg.Section("server").Key("DOMAIN").Value())
	initializeScript = strings.ReplaceAll(initializeScript, "$WORKDIR", newDevContainer.DevcontainerWorkDir)
	initializeScript = strings.ReplaceAll(initializeScript, "$REPO_URL", newURL)
	restartScript := strings.ReplaceAll(string(restartScriptContent), "$WORKDIR", newDevContainer.DevcontainerWorkDir)
	// 2. 根据配置文件中指定的 DevContainer Agent 派遣创建任务
	log.Info("claimDevcontainerResource: 使用 %s Agent 创建 DevContainer", setting.Devcontainer.Agent)
	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		// k8s Operator
		log.Info("claimDevcontainerResource: 调用 K8s Operator 创建 DevContainer, image=%s",
			newDevContainer.Image)
		err := AssignDevcontainerCreation2K8sOperator(ctx, newDevContainer)
		if err != nil {
			log.Error("claimDevcontainerResource: K8s 创建 DevContainer 失败: %v", err)
		} else {
			log.Info("claimDevcontainerResource: K8s 创建 DevContainer 成功, nodePort=%d",
				newDevContainer.DevcontainerPort)
		}
		return err
	case setting.DOCKER:
		return CreateDevcontainer(ctx, newDevContainer, devContainerJSON, initializeScript, restartScript)
	default:
		// 未知 Agent，直接报错
		return devcontainer_models_errors.ErrFailedToOperateDevcontainerDB{
			Action:  "dispatch DevContainer creation",
			Message: fmt.Sprintf("unknown DevContainer agent `%s`, please check your config files", setting.Devcontainer.Agent),
		}
	}
}
func RestartDevcontainer(gitea_ctx gitea_context.Context, opts *RepoDevContainer) error {
	log.Info("RestartDevcontainer: 开始重启 DevContainer, name=%s", opts.DevContainerName)

	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		log.Info("RestartDevcontainer: 使用 K8s Agent 重启容器 %s", opts.DevContainerName)
		ctx := gitea_ctx.Req.Context()
		err := AssignDevcontainerRestart2K8sOperator(&ctx, opts)
		if err != nil {
			log.Error("RestartDevcontainer: K8s 重启容器失败: %v", err)
		} else {
			log.Info("RestartDevcontainer: K8s 重启容器成功")
		}
		return err
	case setting.DOCKER:
		return DockerRestartContainer(&gitea_ctx, opts)
	default:
		return fmt.Errorf("不支持的Agent")
		//默认处理
	}

}
func StopDevcontainer(gitea_ctx context.Context, opts *RepoDevContainer) error {
	log.Info("StopDevcontainer: 开始停止 DevContainer, name=%s", opts.DevContainerName)

	switch setting.Devcontainer.Agent {
	case setting.KUBERNETES, "k8s":
		log.Info("StopDevcontainer: 使用 K8s Agent 停止容器 %s", opts.DevContainerName)
		err := AssignDevcontainerStop2K8sOperator(&gitea_ctx, opts)
		if err != nil {
			log.Error("StopDevcontainer: K8s 停止容器失败: %v", err)
		} else {
			log.Info("StopDevcontainer: K8s 停止容器成功")
		}
		return err
	case setting.DOCKER:
		return DockerStopContainer(&gitea_ctx, opts)
	default:
		return fmt.Errorf("不支持的Agent")
		//默认处理
	}

}