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