package polling

import (
	"context"
	stderrors "errors"
	"strconv"
	"strings"
	"time"

	"go.uber.org/zap"
	"gorm.io/gorm"

	priorityapp "github.com/break/junhong_cmp_fiber/internal/application/prioritypolling"
	"github.com/break/junhong_cmp_fiber/internal/infrastructure/audit"
	"github.com/break/junhong_cmp_fiber/internal/model"
	"github.com/break/junhong_cmp_fiber/internal/store/postgres"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
	"github.com/break/junhong_cmp_fiber/pkg/errors"
	"github.com/break/junhong_cmp_fiber/pkg/middleware"
)

// PriorityManualService 人工优先轮询入口用例：入队、人工关闭与人工重触发。
//
// 与既有人工触发的关系：共用同包权限判定（permission.go），但**不继承**人工触发的每日次数上限与
// 24 小时去重——它们是人工触发的防滥用配额，不是队列不变量；重复抑制由活动项合并承担，
// 且每次人工入队独立记录审计。本用例也不修改调度优先级、不绕过既有并发上限。
//
// 三个入口的权限口径：入队与重触发按卡校验（超级管理员、平台账号与数据范围内的代理账号），
// 人工关闭只允许超级管理员与平台账号。三者对越权与不存在一律返回同一拒绝文案，不产生可枚举差异。
type PriorityManualService struct {
	db            *gorm.DB
	iotCardStore  *postgres.IotCardStore
	priorityStore *postgres.PollingPriorityItemStore
	publisher     priorityapp.PromptPublisher
	auditWriter   *audit.Writer
	logger        *zap.Logger
}

// NewPriorityManualService 创建人工优先轮询入口用例。
func NewPriorityManualService(
	db *gorm.DB,
	iotCardStore *postgres.IotCardStore,
	priorityStore *postgres.PollingPriorityItemStore,
	publisher priorityapp.PromptPublisher,
	logger *zap.Logger,
) *PriorityManualService {
	return &PriorityManualService{
		db:            db,
		iotCardStore:  iotCardStore,
		priorityStore: priorityStore,
		publisher:     publisher,
		logger:        logger,
	}
}

// SetAudit 注入统一审计 Writer。
func (s *PriorityManualService) SetAudit(writer *audit.Writer) {
	s.auditWriter = writer
}

// EnqueueResult 描述一次人工优先入队的结果：一次优先需求覆盖给定的任务类型集合。
type EnqueueResult struct {
	CardID       uint
	TaskTypes    []string
	CreatedCount int
	MergedCount  int
	Items        []EnqueueItemResult
}

// EnqueueItemResult 是单个任务类型的入队结果。
type EnqueueItemResult struct {
	ItemID          uint
	TaskType        string
	Status          string
	AttemptCount    int
	TriggerCount    int
	LastTriggeredAt time.Time
	Created         bool
}

// CloseResult 描述一次人工关闭的结果。
type CloseResult struct {
	ItemID     uint
	CardID     uint
	TaskType   string
	Status     string
	DequeuedAt time.Time
	Reason     string
}

// RetriggerResult 描述一次人工重触发的结果：以原终态项为来源，为该卡该任务类型建立或合并活动项。
type RetriggerResult struct {
	SourceItemID uint
	Reason       string
	Enqueue      *EnqueueResult
}

// priorityManualEnqueue 描述一次人工优先入队请求（入队与重触发共用同一实现）。
type priorityManualEnqueue struct {
	CardID       uint
	Reason       string
	OperatorID   uint
	OperatorName string
	TaskTypes    []string
	// DeniedActionCode 是本次入口被拒绝时登记的审计动作码。
	DeniedActionCode string
	// RetriggeredFromItemID 非 0 表示本次入队来自对某终态项的人工重触发：
	// 除逐任务类型的入队审计外追加一条重触发审计，两者与新活动项同一事务。
	RetriggeredFromItemID uint
}

// 人工入口的固定中文提示：原因必填与长度上限三项入口共用同一口径。
const (
	priorityEnqueueReasonEmptyMessage    = "人工优先入队原因不能为空"
	priorityCloseReasonEmptyMessage      = "人工关闭原因不能为空"
	priorityRetriggerReasonEmptyMessage  = "人工重触发原因不能为空"
	priorityReasonTooLongMessage         = "人工原因长度超出上限"
	priorityCloseInvalidStateMessage     = "仅待执行或执行中的优先轮询项可关闭"
	priorityRetriggerInvalidStateMessage = "仅失败出队或已过期的优先轮询项可重触发"
)

// Enqueue 为该卡建立或合并全部纳入轮询任务类型的优先项，并在提交后逐类型下发执行提示。
//
// 一次优先需求 = 该卡的全部纳入任务类型（constants.PollingPriorityTaskTypes），
// 与执行集合一致；入队对象是卡，不做设备维度入队。
func (s *PriorityManualService) Enqueue(ctx context.Context, cardID uint, reason string, operatorID uint) (*EnqueueResult, error) {
	trimmedReason, message := normalizePriorityReason(reason, priorityEnqueueReasonEmptyMessage)
	if message != "" {
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityManualDenied, errors.CodeInvalidParam, message,
			pollingPriorityAttemptKey(cardID, operatorID),
			map[string]any{"card_id": cardID, "manual_operator_id": operatorID}, operatorID, nil)
	}
	return s.enqueue(ctx, priorityManualEnqueue{
		CardID:           cardID,
		Reason:           trimmedReason,
		OperatorID:       operatorID,
		OperatorName:     middleware.GetUsernameFromContext(ctx),
		TaskTypes:        constants.PollingPriorityTaskTypes(),
		DeniedActionCode: constants.AuditActionPollingPriorityManualDenied,
	})
}

// Close 人工关闭未完成的优先项：原因必填，未完成项转已关闭终态并出队，既有执行结果与失败原因保留。
//
// 只允许超级管理员与平台账号：代理账号即使对该卡有数据权限也不能关闭优先项。
// 关闭不发起任何上游调用，也不删除既有事实；关闭原因只进审计，不写入失败原因。
func (s *PriorityManualService) Close(ctx context.Context, itemID uint, reason string, operatorID uint) (*CloseResult, error) {
	trimmedReason, message := normalizePriorityReason(reason, priorityCloseReasonEmptyMessage)
	if message != "" {
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityClosed, errors.CodeInvalidParam, message,
			pollingPriorityResourceKey(itemID),
			map[string]any{"priority_item_id": itemID, "manual_operator_id": operatorID}, operatorID, nil)
	}
	if err := requirePriorityPollingAdmin(ctx); err != nil {
		// 越权与不存在共用同一文案：不暴露他人资源是否存在。
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityClosed, errors.CodeForbidden, pollingDeniedMessage,
			pollingPriorityResourceKey(itemID),
			map[string]any{"priority_item_id": itemID, "manual_operator_id": operatorID}, operatorID, nil)
	}
	item, err := s.priorityStore.GetByIDScoped(ctx, itemID, nil)
	if err != nil {
		if stderrors.Is(err, gorm.ErrRecordNotFound) {
			return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityClosed, errors.CodeForbidden, pollingDeniedMessage,
				pollingPriorityResourceKey(itemID),
				map[string]any{"priority_item_id": itemID, "manual_operator_id": operatorID}, operatorID, nil)
		}
		return nil, errors.Wrap(errors.CodeDatabaseError, err, "查询优先轮询项失败")
	}
	if !constants.PollingPriorityActive(item.Status) {
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityClosed, errors.CodeInvalidStatus,
			priorityCloseInvalidStateMessage, pollingPriorityResourceKey(itemID),
			map[string]any{"priority_item_id": itemID, "status": item.Status, "manual_operator_id": operatorID}, operatorID, nil)
	}

	card := s.loadCard(ctx, item.CardID)
	closedAt := time.Now()
	err = runPollingTransaction(ctx, s.db, s.auditWriter, func(tx *gorm.DB) error {
		hit, closeErr := s.priorityStore.WithTx(tx).Close(ctx, itemID)
		if closeErr != nil {
			return closeErr
		}
		if !hit {
			// 条件更新落空：该项已被并发执行终结，本次关闭不生效也不覆盖既有结论。
			return errors.New(errors.CodeInvalidStatus, "优先轮询项已被并发执行终结，本次关闭未生效")
		}
		// 关闭事实与审计同事务：审计写不进去就整体回滚，不出现「已关闭但无审计」。
		return writePollingAudit(ctx, tx, s.auditWriter, audit.PollingInput{
			ActionCode:   constants.AuditActionPollingPriorityClosed,
			Summary:      "人工关闭卡轮询优先项",
			ResourceType: constants.AuditResourcePollingPriorityItem,
			ResourceID:   itemID,
			ResourceKey:  pollingPriorityResourceKey(itemID),
			DisplayName:  "卡轮询优先项",
			OperatorID:   operatorID,
			IdentitySnapshot: map[string]any{
				"id": itemID, "card_id": item.CardID, "task_type": item.TaskType,
				"status": item.Status, "trigger_type": item.TriggerType,
				"attempt_count": item.AttemptCount, "manual_operator_id": operatorID,
			},
			BeforeData: map[string]any{"status": item.Status, "result": item.Result, "failure_reason": item.FailureReason},
			AfterData: map[string]any{
				"status": constants.PollingPriorityStatusClosed, "dequeued_at": closedAt,
				"reason": trimmedReason, "manual_operator_id": operatorID,
				"source": constants.AuditSourceAdminAPI, "occurred_at": closedAt,
			},
			Metadata: map[string]any{
				"reason": trimmedReason, "card_id": item.CardID, "task_type": item.TaskType,
				"previous_status": item.Status,
			},
			Cards: cardSlice(card),
		})
	})
	if err != nil {
		return nil, err
	}
	s.logger.Info("人工关闭优先轮询项成功",
		zap.Uint("priority_item_id", itemID), zap.Uint("operator_id", operatorID),
		zap.String("previous_status", item.Status))
	return &CloseResult{
		ItemID: itemID, CardID: item.CardID, TaskType: item.TaskType,
		Status: constants.PollingPriorityStatusClosed, DequeuedAt: closedAt, Reason: trimmedReason,
	}, nil
}

// Retrigger 对失败出队或已过期的优先项执行人工重触发。
//
// 复用人工入队同一实现为该卡**该任务类型**建立新的活动项（尝试次数从零开始），
// 原因必填并与操作者一同写入审计；不绕过活动项唯一键代表的并发上限，
// 停复机持锁拒绝与任务类型范围仍由既有执行路径负责，本入口不发起任何上游调用。
func (s *PriorityManualService) Retrigger(ctx context.Context, itemID uint, reason string, operatorID uint) (*RetriggerResult, error) {
	trimmedReason, message := normalizePriorityReason(reason, priorityRetriggerReasonEmptyMessage)
	if message != "" {
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityRetriggered, errors.CodeInvalidParam, message,
			pollingPriorityResourceKey(itemID),
			map[string]any{"priority_item_id": itemID, "manual_operator_id": operatorID}, operatorID, nil)
	}
	// 先按主键定位来源项：不存在与越权在后续按卡校验中收敛为同一拒绝文案。
	item, err := s.priorityStore.GetByIDScoped(ctx, itemID, nil)
	if err != nil {
		if stderrors.Is(err, gorm.ErrRecordNotFound) {
			return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityRetriggered, errors.CodeForbidden, pollingDeniedMessage,
				pollingPriorityResourceKey(itemID),
				map[string]any{"priority_item_id": itemID, "manual_operator_id": operatorID}, operatorID, nil)
		}
		return nil, errors.Wrap(errors.CodeDatabaseError, err, "查询优先轮询项失败")
	}
	// 数据范围按卡在业务边界校验，且必须先于状态判断：否则可依据状态差异枚举范围外资源是否存在。
	if err := canManagePollingCard(ctx, s.iotCardStore, item.CardID); err != nil {
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityRetriggered, errors.CodeForbidden, pollingDeniedMessage,
			pollingPriorityResourceKey(itemID),
			map[string]any{"priority_item_id": itemID, "card_id": item.CardID, "manual_operator_id": operatorID},
			operatorID, cardSlice(s.loadCard(ctx, item.CardID)))
	}
	if !constants.PollingPriorityRetriggerable(item.Status) {
		return nil, s.denyManual(ctx, constants.AuditActionPollingPriorityRetriggered, errors.CodeInvalidStatus,
			priorityRetriggerInvalidStateMessage, pollingPriorityResourceKey(itemID),
			map[string]any{"priority_item_id": itemID, "status": item.Status, "manual_operator_id": operatorID},
			operatorID, cardSlice(s.loadCard(ctx, item.CardID)))
	}

	result, err := s.enqueue(ctx, priorityManualEnqueue{
		CardID:                item.CardID,
		Reason:                trimmedReason,
		OperatorID:            operatorID,
		OperatorName:          middleware.GetUsernameFromContext(ctx),
		TaskTypes:             []string{item.TaskType},
		DeniedActionCode:      constants.AuditActionPollingPriorityRetriggered,
		RetriggeredFromItemID: itemID,
	})
	if err != nil {
		return nil, err
	}
	s.logger.Info("人工重触发优先轮询项成功",
		zap.Uint("source_item_id", itemID), zap.Uint("card_id", item.CardID),
		zap.String("task_type", item.TaskType), zap.Uint("operator_id", operatorID))
	return &RetriggerResult{SourceItemID: itemID, Reason: trimmedReason, Enqueue: result}, nil
}

// enqueue 执行人工优先入队：权限校验、逐任务类型建立或合并活动项、同事务写审计，提交后下发执行提示。
func (s *PriorityManualService) enqueue(ctx context.Context, input priorityManualEnqueue) (*EnqueueResult, error) {
	if input.CardID == 0 {
		return nil, errors.New(errors.CodeInvalidParam, "无效的卡ID")
	}
	// 权限判定与既有人工触发共用同一套语义：超管/平台放行、企业拒绝、代理限自身与下级、平台卡不可见。
	if err := canManagePollingCard(ctx, s.iotCardStore, input.CardID); err != nil {
		return nil, s.denyManual(ctx, input.DeniedActionCode, errors.CodeForbidden, pollingDeniedMessage,
			pollingPriorityAttemptKey(input.CardID, input.OperatorID),
			map[string]any{"card_id": input.CardID, "manual_operator_id": input.OperatorID}, input.OperatorID, nil)
	}
	card, err := s.iotCardStore.GetByID(ctx, input.CardID)
	if err != nil || card == nil {
		return nil, s.denyManual(ctx, input.DeniedActionCode, errors.CodeForbidden, pollingDeniedMessage,
			pollingPriorityAttemptKey(input.CardID, input.OperatorID),
			map[string]any{"card_id": input.CardID, "manual_operator_id": input.OperatorID}, input.OperatorID, nil)
	}

	taskTypes := input.TaskTypes
	result := &EnqueueResult{CardID: input.CardID, TaskTypes: taskTypes}
	err = runPollingTransaction(ctx, s.db, s.auditWriter, func(tx *gorm.DB) error {
		store := s.priorityStore.WithTx(tx)
		// 资产身份与代理归属在入队时冻结，口径与迁移回填一致；查询不到卡行时按「资产为卡自身」兜底。
		snapshots, snapshotErr := store.AssetSnapshots(ctx, []uint{input.CardID})
		if snapshotErr != nil {
			return snapshotErr
		}
		snapshot := snapshots[input.CardID]
		for _, taskType := range taskTypes {
			item := &model.PollingPriorityItem{
				CardID:              input.CardID,
				TaskType:            taskType,
				TriggerType:         constants.PollingPriorityTriggerManual,
				ManualReason:        input.Reason,
				ManualOperatorID:    input.OperatorID,
				ManualOperatorName:  input.OperatorName,
				ShopIDSnapshot:      card.ShopID,
				AssetType:           snapshot.AssetType,
				AssetID:             optionalUintValue(snapshot.AssetID),
				DeviceNoSnapshot:    snapshot.DeviceNo,
				AgentShopIDSnapshot: snapshot.AgentShopID,
			}
			// 先读取合并前的活动项作为审计 Before 的真实快照；无活动项则 Before 为空。
			// 残余近似：并发下相邻执行可能在该读取与合并之间把该行终态化并另建新行，
			// 此时 Before 描述的是读取时点的活动项而非实际被合并行，属可接受的审计快照。
			before, beforeErr := store.FindActive(ctx, input.CardID, taskType)
			if beforeErr != nil {
				return beforeErr
			}
			created, insertErr := store.InsertOrMerge(ctx, item)
			if insertErr != nil {
				return insertErr
			}
			active, activeErr := store.FindActive(ctx, input.CardID, taskType)
			if activeErr != nil {
				return activeErr
			}
			if active == nil {
				return errors.New(errors.CodeInternalError, "优先轮询项入队后未能读回活动项")
			}
			if created {
				result.CreatedCount++
			} else {
				result.MergedCount++
			}
			result.Items = append(result.Items, EnqueueItemResult{
				ItemID:          active.ID,
				TaskType:        active.TaskType,
				Status:          active.Status,
				AttemptCount:    active.AttemptCount,
				TriggerCount:    active.TriggerCount,
				LastTriggeredAt: active.LastTriggeredAt,
				Created:         created,
			})
			// 入队事实与审计同事务：合并结果同样落库，避免「加急事实已生效但无审计」。
			if auditErr := writePollingAudit(ctx, tx, s.auditWriter, audit.PollingInput{
				ActionCode:   constants.AuditActionPollingPriorityEnqueued,
				Summary:      "人工优先入队",
				ResourceType: constants.AuditResourcePollingPriorityItem,
				ResourceID:   active.ID,
				ResourceKey:  pollingPriorityResourceKey(active.ID),
				DisplayName:  "卡轮询优先项",
				OperatorID:   input.OperatorID,
				IdentitySnapshot: map[string]any{
					"id": active.ID, "card_id": active.CardID, "task_type": active.TaskType,
					"status": active.Status, "trigger_type": active.TriggerType,
					"trigger_count": active.TriggerCount, "manual_operator_id": active.ManualOperatorID,
				},
				BeforeData: pollingPriorityBeforeData(before),
				AfterData: map[string]any{
					"status": active.Status, "trigger_type": active.TriggerType, "trigger_types": triggerTypesReadable(active.TriggerTypes),
					"trigger_count": active.TriggerCount, "last_triggered_at": active.LastTriggeredAt,
					"manual_reason": active.ManualReason, "manual_operator_id": active.ManualOperatorID,
					"source": constants.AuditSourceAdminAPI, "occurred_at": time.Now(),
				},
				Metadata: map[string]any{"created": created, "task_type": taskType, "card_id": input.CardID},
				Cards:    []*model.IotCard{card},
			}); auditErr != nil {
				return auditErr
			}
			if input.RetriggeredFromItemID != 0 {
				if auditErr := s.writeRetriggerAudit(ctx, tx, input, active, taskType, card); auditErr != nil {
					return auditErr
				}
			}
		}
		return nil
	})
	if err != nil {
		return nil, err
	}

	// 提交后逐任务类型下发执行提示：与既有手动触发队列分离的优先提示通道，每类型独立键。
	if s.publisher == nil {
		s.logger.Error("优先轮询提示通道未配置，本次入队只依赖普通轮询兜底", zap.Uint("card_id", input.CardID))
	} else {
		for _, taskType := range taskTypes {
			if publishErr := s.publisher.EnqueuePriority(ctx, input.CardID, taskType); publishErr != nil {
				// 提示通道不是权威：下发失败只退化为延迟一个普通轮询周期，不撤销已生效的入队事实。
				s.logger.Error("下发优先轮询执行提示失败",
					zap.Uint("card_id", input.CardID), zap.String("task_type", taskType), zap.Error(publishErr))
			}
		}
	}
	s.logger.Info("人工优先入队成功",
		zap.Uint("card_id", input.CardID), zap.Int("created_count", result.CreatedCount),
		zap.Int("merged_count", result.MergedCount), zap.Uint("operator_id", input.OperatorID))
	return result, nil
}

// writeRetriggerAudit 写入一条人工重触发审计，与新建活动项同一事务。
func (s *PriorityManualService) writeRetriggerAudit(
	ctx context.Context,
	tx *gorm.DB,
	input priorityManualEnqueue,
	active *model.PollingPriorityItem,
	taskType string,
	card *model.IotCard,
) error {
	occurredAt := time.Now()
	return writePollingAudit(ctx, tx, s.auditWriter, audit.PollingInput{
		ActionCode:   constants.AuditActionPollingPriorityRetriggered,
		Summary:      "人工重触发卡轮询优先项",
		ResourceType: constants.AuditResourcePollingPriorityItem,
		ResourceID:   active.ID,
		ResourceKey:  pollingPriorityResourceKey(active.ID),
		DisplayName:  "卡轮询优先项",
		OperatorID:   input.OperatorID,
		IdentitySnapshot: map[string]any{
			"id": active.ID, "card_id": active.CardID, "task_type": active.TaskType,
			"status": active.Status, "trigger_type": active.TriggerType,
			"attempt_count": active.AttemptCount, "manual_operator_id": active.ManualOperatorID,
		},
		AfterData: map[string]any{
			"source_item_id": input.RetriggeredFromItemID, "reason": input.Reason,
			"status": active.Status, "attempt_count": active.AttemptCount, "attempt_limit": active.AttemptLimit,
			"trigger_type": active.TriggerType, "created": true,
			"source": constants.AuditSourceAdminAPI, "occurred_at": occurredAt,
		},
		Metadata: map[string]any{
			"source_item_id": input.RetriggeredFromItemID, "reason": input.Reason,
			"card_id": active.CardID, "task_type": taskType,
		},
		Cards: cardSlice(card),
	})
}

// denyManual 记录一次人工入口被拒绝的审计，并返回原错误。
// 拒绝发生在业务事务之外（或业务已回滚），因此沿用既有轮询模块的独立短事务模式。
func (s *PriorityManualService) denyManual(
	ctx context.Context,
	actionCode string,
	code int,
	summary string,
	resourceKey string,
	identity map[string]any,
	operatorID uint,
	cards []*model.IotCard,
) error {
	appErr := errors.New(code, summary)
	recordPollingFailure(ctx, s.db, s.auditWriter, audit.PollingInput{
		ActionCode:       actionCode,
		Summary:          summary,
		ResourceType:     constants.AuditResourcePollingPriorityItem,
		ResourceKey:      resourceKey,
		DisplayName:      "卡轮询优先项",
		OperatorID:       operatorID,
		Result:           constants.AuditResultDenied,
		IdentitySnapshot: identity,
		Cards:            cards,
	}, appErr)
	return appErr
}

// loadCard 读取卡用于审计关联资源；读取失败只损失卡的关联资源，不阻断主流程。
func (s *PriorityManualService) loadCard(ctx context.Context, cardID uint) *model.IotCard {
	if cardID == 0 {
		return nil
	}
	card, err := s.iotCardStore.GetByID(ctx, cardID)
	if err != nil {
		return nil
	}
	return card
}

// cardSlice 把可空卡指针转成审计所需的关联资源切片。
func cardSlice(card *model.IotCard) []*model.IotCard {
	if card == nil {
		return nil
	}
	return []*model.IotCard{card}
}

// normalizePriorityReason 校验人工原因：去空白后非空且不超过事实表原因列的长度上限。
// 返回的第二个值非空即为拒绝提示，调用方据此记录拒绝审计并拒绝请求。
func normalizePriorityReason(reason, emptyMessage string) (string, string) {
	trimmed := strings.TrimSpace(reason)
	if trimmed == "" {
		return "", emptyMessage
	}
	if len([]rune(trimmed)) > constants.PollingPriorityManualReasonMaxLength {
		return "", priorityReasonTooLongMessage
	}
	return trimmed, ""
}

// optionalUintValue 把非零 ID 转成可空指针，零值以 NULL 参与写入。
func optionalUintValue(value uint) *uint {
	if value == 0 {
		return nil
	}
	return &value
}

// pollingPriorityResourceKey 返回优先项在审计里的稳定资源键。
func pollingPriorityResourceKey(itemID uint) string {
	return strconv.FormatUint(uint64(itemID), 10)
}

// pollingPriorityAttemptKey 返回无入队对象的拒绝审计资源键（按卡与操作者稳定）。
func pollingPriorityAttemptKey(cardID, operatorID uint) string {
	return "priority:" + strconv.FormatUint(uint64(cardID), 10) + ":" + strconv.FormatUint(uint64(operatorID), 10)
}

// pollingPriorityBeforeData 把合并前的活动项快照投影为审计前后值；无活动项（新建）时返回空对象。
func pollingPriorityBeforeData(before *model.PollingPriorityItem) map[string]any {
	if before == nil {
		return map[string]any{}
	}
	return map[string]any{
		"status":        before.Status,
		"trigger_type":  before.TriggerType,
		"trigger_types": triggerTypesReadable(before.TriggerTypes),
		"trigger_count": before.TriggerCount,
	}
}

// triggerTypesReadable 将存储形式的触发类型集合（两端补逗号）还原为可读的逗号分隔形式。
func triggerTypesReadable(raw string) string {
	return strings.Trim(raw, ",")
}