package status

import (
	"context"
	"fmt"
	jsoniter "github.com/json-iterator/go"
	"github.com/rs/zerolog/log"
	"github.com/zeromicro/go-zero/core/logx"
	"gitlink.org.cn/JointCloud/pcm-coordinator/internal/scheduler/service/utils/jcs"
	"gitlink.org.cn/JointCloud/pcm-coordinator/internal/svc"
	"gitlink.org.cn/JointCloud/pcm-coordinator/internal/types"
	"gitlink.org.cn/JointCloud/pcm-coordinator/pkg/constants"
	"gitlink.org.cn/JointCloud/pcm-coordinator/pkg/models"
	"gitlink.org.cn/JointCloud/pcm-coordinator/pkg/utils"
	"gorm.io/gorm"
	"strconv"
	"time"
)

func reportCloudStatusMessages(svc *svc.ServiceContext, task *types.TaskModel, cloudTask *models.TaskCloud, status bool, message string) error {
	report := &jcs.JobStatusReportReq{}
	reportMsg := &jcs.TrainReportMessage{
		Type:      "Train",
		TaskName:  task.Name,
		TaskID:    strconv.FormatInt(task.Id, 10),
		Status:    status,
		Message:   message,
		ClusterID: strconv.FormatInt(cloudTask.ClusterId, 10),
	}
	report.Report = reportMsg

	marshal, _ := jsoniter.MarshalToString(report)
	log.Debug().Msgf("通知中间件任务状态参数: [%v]", marshal)
	err := jcs.StatusReport(svc.Scheduler.AiService.Conf.JcsMiddleware.JobStatusReportUrl, report)
	if err != nil {
		logx.Errorf("############ Report Status Message Error %s", err.Error())
		return err
	}
	return nil
}

// UpdateCloudTaskStatus CLOUD 任务状态同步函数
func UpdateCloudTaskStatus(svc *svc.ServiceContext) {
	// 1. 查询需要同步的通算任务
	var cloudTaskList []*models.TaskCloud
	sqlStr := `SELECT * FROM task_cloud WHERE status NOT IN ('Failed', 'Completed', 'Cancelled') ORDER BY create_time DESC LIMIT 10`
	if err := svc.DbEngin.Raw(sqlStr).Scan(&cloudTaskList).Error; err != nil {
		logx.Errorf("Failed to query CLOUD tasks for sync: %v", err)
		return
	}

	if len(cloudTaskList) == 0 {
		return
	}

	// 2. 批量获取关联的 Task 模型
	taskIDs := make([]int64, len(cloudTaskList))
	for i, cloud := range cloudTaskList {
		taskIDs[i] = cloud.TaskId
	}

	taskMap := make(map[int64]*types.TaskModel)
	var tasks []*types.TaskModel
	if err := svc.DbEngin.Model(&models.Task{}).Where("id IN ?", taskIDs).Find(&tasks).Error; err != nil {
		logx.Errorf("Failed to batch query tasks: %v", err)
		return
	}
	for _, task := range tasks {
		taskMap[task.Id] = task
	}

	// 3. 遍历 CLOUD 任务并更新状态
	for _, cloud := range cloudTaskList {
		task, ok := taskMap[cloud.TaskId]
		if !ok {
			logx.Errorf("Task with ID %d not found for CLOUD task %d, skipping", cloud.TaskId, cloud.Id)
			continue
		}

		// 使用带超时的 Context，防止 API 调用阻塞
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()

		adapterIDStr := strconv.FormatInt(cloud.AdapterId, 10)
		adapter, adapterExists := svc.Scheduler.CloudService.CloudExecutorAdapterMap[adapterIDStr]
		if !adapterExists {
			logx.Errorf("CLOUD adapter with ID %s not found, skipping task %s", adapterIDStr, cloud.Name)
			continue
		}

		// 4. 从 CLOUD 集群获取最新状态
		cloudTaskInfo, err := adapter.GetContainer(ctx, cloud.Name, cloud.BusinessCode, utils.Int64ToString(cloud.ClusterId))
		if err != nil {
			logx.Errorf("Failed to get task status from CLOUD executor for job %s: %v", cloud.Name, err)
			continue // 继续处理下一个任务
		}
		if cloudTaskInfo.Status == "" {
			continue
		}
		// 如果状态没有变化，则跳过
		if cloud.Status == cloudTaskInfo.Status {
			continue
		}

		// 5. 准备更新
		startTime := convertUTCTimeToCST(cloudTaskInfo.Start)
		previousStatus := cloud.Status
		cloud.Status = cloudTaskInfo.Status
		cloud.StartTime = startTime

		task.Status = cloudTaskInfo.Status
		task.StartTime = startTime
		task.EndTime = cloudTaskInfo.End

		logx.Infof("CLOUD task status change detected for job %s: %s -> %s", cloud.Name, previousStatus, cloud.Status)

		// 6. 在事务中更新数据库
		err = svc.DbEngin.Transaction(func(tx *gorm.DB) error {
			task.UpdatedTime = time.Now().Format(constants.Layout)
			if err := tx.Table("task").Updates(task).Error; err != nil {
				return fmt.Errorf("failed to update task table: %w", err)
			}
			if err := tx.Table("task_cloud").Updates(cloud).Error; err != nil {
				return fmt.Errorf("failed to update cloud_task table: %w", err)
			}
			return nil
		})

		if err != nil {
			logx.Errorf("Failed to update database in transaction for job %s: %v", cloud.Name, err)
			// 事务失败，回滚状态，继续处理下一个任务
			cloud.Status = previousStatus
			task.Status = previousStatus
			continue
		}

		// 7. 根据新状态执行后续操作 (通知、报告等)
		handleNoticeChange(svc, task, cloud, cloudTaskInfo.Status)
	}
}

// handleStatusChange 根据新状态执行后续操作
func handleNoticeChange(svc *svc.ServiceContext, task *types.TaskModel, cloud *models.TaskCloud, newStatus string) {
	adapterIDStr := strconv.FormatInt(cloud.AdapterId, 10)
	clusterIDStr := strconv.FormatInt(cloud.ClusterId, 10)
	var noticeType, noticeMessage string
	var reportSuccess bool
	var shouldReport bool

	switch newStatus {
	case constants.Running:
		noticeType = "running"
		noticeMessage = "任务运行中"
	case constants.Failed:
		noticeType = "failed"
		noticeMessage = "任务失败"
		reportSuccess = false
		shouldReport = true
	case constants.Completed:
		noticeType = "completed"
		noticeMessage = "任务完成"
		reportSuccess = true
		shouldReport = true
	case constants.Pending:
		noticeType = "pending"
		noticeMessage = "任务pending"
	default:
		// 对于其他未知状态，可以选择记录日志并返回
		logx.Errorf("Unhandled CLOUD task status '%s' for job %s", newStatus, cloud.Name)
		return
	}

	// 发送通知
	svc.Scheduler.CloudStorages.AddNoticeInfo(adapterIDStr, cloud.AdapterName, clusterIDStr, cloud.ClusterName, cloud.Name, noticeType, noticeMessage)
	logx.Infof("[%s]: 任务状态变更为 [%s]，发送通知。", cloud.Name, newStatus)

	// 上报状态
	if shouldReport {
		if err := reportCloudStatusMessages(svc, task, cloud, reportSuccess, noticeMessage); err != nil {
			logx.Errorf("Failed to report Cloud status for job %s: %v", cloud.Name, err)
		}
	}
}
func convertUTCTimeToCST(utcTimeStr string) string {
	if utcTimeStr == "" {
		return ""
	}

	// 定义多种可能的时间格式
	timeFormats := []string{
		"2006-01-02T15:04:05Z",     // ISO 8601 格式
		"2006-01-02 15:04:05",      // 常见格式
		"2006-01-02T15:04:05",      // ISO 无时区
		"2006-01-02 15:04:05Z",     // 带Z的常见格式
		time.RFC3339,               // RFC3339 标准格式
		"2006-01-02T15:04:05.000Z", // 带毫秒的ISO格式
	}

	var utcTime time.Time
	var err error

	// 尝试解析多种格式
	for _, format := range timeFormats {
		utcTime, err = time.Parse(format, utcTimeStr)
		if err == nil {
			break
		}
	}

	// 如果所有格式都失败，记录警告并返回原字符串
	if err != nil {
		logx.Errorf("Failed to parse time string '%s' with all known formats, returning original string", utcTimeStr)
		return utcTimeStr
	}

	// 创建东八区时区
	cstZone := time.FixedZone("CST", 8*3600)

	// 将UTC时间转换为东八区时间
	cstTime := utcTime.In(cstZone)

	// 格式化东八区时间
	return cstTime.Format("2006-01-02T15:04:05-07:00")
}