18278715334@163.com

internal/domains/article/services/announcement_service.go

@@ -0,0 +1,133 @@
+package services
+
+import (
+	"tyapi-server/internal/domains/article/entities"
+)
+
+// AnnouncementService 公告领域服务
+// 处理公告相关的业务逻辑，包括验证、状态管理等
+type AnnouncementService struct{}
+
+// NewAnnouncementService 创建公告领域服务
+func NewAnnouncementService() *AnnouncementService {
+	return &AnnouncementService{}
+}
+
+// ValidateAnnouncement 验证公告
+// 检查公告是否符合业务规则
+func (s *AnnouncementService) ValidateAnnouncement(announcement *entities.Announcement) error {
+	// 1. 基础验证
+	if err := announcement.Validate(); err != nil {
+		return err
+	}
+
+	// 2. 业务规则验证
+	// 标题不能包含敏感词
+	if s.containsSensitiveWords(announcement.Title) {
+		return entities.NewValidationError("公告标题包含敏感词")
+	}
+
+	// 内容不能包含敏感词
+	if s.containsSensitiveWords(announcement.Content) {
+		return entities.NewValidationError("公告内容包含敏感词")
+	}
+
+	// 标题长度验证
+	if len(announcement.Title) > 200 {
+		return entities.NewValidationError("公告标题不能超过200个字符")
+	}
+
+	return nil
+}
+
+// CanPublish 检查是否可以发布
+func (s *AnnouncementService) CanPublish(announcement *entities.Announcement) error {
+	if announcement.Status == entities.AnnouncementStatusPublished {
+		return entities.NewValidationError("公告已经是发布状态")
+	}
+
+	if announcement.Status == entities.AnnouncementStatusArchived {
+		return entities.NewValidationError("已归档的公告不能发布")
+	}
+
+	// 检查必填字段
+	if announcement.Title == "" {
+		return entities.NewValidationError("公告标题不能为空")
+	}
+	if announcement.Content == "" {
+		return entities.NewValidationError("公告内容不能为空")
+	}
+
+	return nil
+}
+
+// CanEdit 检查是否可以编辑
+func (s *AnnouncementService) CanEdit(announcement *entities.Announcement) error {
+	if announcement.Status == entities.AnnouncementStatusPublished {
+		return entities.NewValidationError("已发布的公告不能编辑，请先撤回")
+	}
+
+	if announcement.Status == entities.AnnouncementStatusArchived {
+		return entities.NewValidationError("已归档的公告不能编辑")
+	}
+
+	return nil
+}
+
+// CanArchive 检查是否可以归档
+func (s *AnnouncementService) CanArchive(announcement *entities.Announcement) error {
+	if announcement.Status != entities.AnnouncementStatusPublished {
+		return entities.NewValidationError("只有已发布的公告才能归档")
+	}
+
+	return nil
+}
+
+// CanWithdraw 检查是否可以撤回
+func (s *AnnouncementService) CanWithdraw(announcement *entities.Announcement) error {
+	if announcement.Status != entities.AnnouncementStatusPublished {
+		return entities.NewValidationError("只有已发布的公告才能撤回")
+	}
+
+	return nil
+}
+
+// CanSchedulePublish 检查是否可以定时发布
+func (s *AnnouncementService) CanSchedulePublish(announcement *entities.Announcement, scheduledTime interface{}) error {
+	if announcement.Status == entities.AnnouncementStatusPublished {
+		return entities.NewValidationError("已发布的公告不能设置定时发布")
+	}
+
+	if announcement.Status == entities.AnnouncementStatusArchived {
+		return entities.NewValidationError("已归档的公告不能设置定时发布")
+	}
+
+	return nil
+}
+
+// containsSensitiveWords 检查是否包含敏感词
+func (s *AnnouncementService) containsSensitiveWords(text string) bool {
+	// TODO: 实现敏感词检查逻辑
+	// 这里可以集成敏感词库或调用外部服务
+	sensitiveWords := []string{
+		"敏感词1",
+		"敏感词2",
+		"敏感词3",
+	}
+
+	for _, word := range sensitiveWords {
+		if len(word) > 0 && len(text) > 0 {
+			// 简单的字符串包含检查
+			// 实际项目中应该使用更复杂的算法
+			if len(text) >= len(word) {
+				for i := 0; i <= len(text)-len(word); i++ {
+					if text[i:i+len(word)] == word {
+						return true
+					}
+				}
+			}
+		}
+	}
+
+	return false
+}