refactor: update repository interfaces and improve dependency injection

- Refactored repository structures to use interfaces instead of concrete types, enhancing flexibility and testability.
- Updated various repository methods to accept interfaces, allowing for better dependency management.
- Modified wire generation to accommodate new repository interfaces, ensuring proper service injection throughout the application.
- Enhanced handler methods to utilize DTOs for filtering and data handling, improving code clarity and maintainability.

internal/handler/system_message_handler.go

@@ -3,33 +3,24 @@ package handler
 import (
 	"strconv"
 
-	"carrot_bbs/internal/cache"
-
 	"github.com/gin-gonic/gin"
 
 	"carrot_bbs/internal/dto"
 	"carrot_bbs/internal/pkg/response"
-	"carrot_bbs/internal/repository"
 	"carrot_bbs/internal/service"
 )
 
 // SystemMessageHandler 系统消息处理器
 type SystemMessageHandler struct {
 	systemMsgService service.SystemMessageService
-	notifyRepo       *repository.SystemNotificationRepository
-	cache            cache.Cache
 }
 
 // NewSystemMessageHandler 创建系统消息处理器
 func NewSystemMessageHandler(
 	systemMsgService service.SystemMessageService,
-	notifyRepo *repository.SystemNotificationRepository,
-	cacheBackend cache.Cache,
 ) *SystemMessageHandler {
 	return &SystemMessageHandler{
 		systemMsgService: systemMsgService,
-		notifyRepo:       notifyRepo,
-		cache:            cacheBackend,
 	}
 }
 
@@ -53,8 +44,8 @@ func (h *SystemMessageHandler) GetSystemMessages(c *gin.Context) {
 	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
 	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
 
-	// 获取当前用户的系统通知（从独立表中获取）
-	notifications, total, err := h.notifyRepo.GetByReceiverID(userID, page, pageSize)
+	// 获取当前用户的系统通知
+	notifications, total, err := h.systemMsgService.GetNotifications(userID, page, pageSize)
 	if err != nil {
 		response.InternalServerError(c, "failed to get system messages")
 		return
@@ -83,7 +74,7 @@ func (h *SystemMessageHandler) GetSystemMessagesByCursor(c *gin.Context) {
 	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
 
 	// 获取当前用户的系统通知（使用兼容旧版接口）
-	notifications, nextCursor, hasMore, err := h.notifyRepo.GetByReceiverIDCursorLegacy(userID, cursorStr, pageSize)
+	notifications, nextCursor, hasMore, err := h.systemMsgService.GetNotificationsByCursor(userID, cursorStr, pageSize)
 	if err != nil {
 		response.InternalServerError(c, "failed to get system messages")
 		return
@@ -117,7 +108,7 @@ func (h *SystemMessageHandler) GetUnreadCount(c *gin.Context) {
 	}
 
 	// 获取当前用户的未读通知数
-	unreadCount, err := h.notifyRepo.GetUnreadCount(userID)
+	unreadCount, err := h.systemMsgService.GetUnreadCount(userID)
 	if err != nil {
 		response.InternalServerError(c, "failed to get unread count")
 		return
@@ -145,12 +136,11 @@ func (h *SystemMessageHandler) MarkAsRead(c *gin.Context) {
 	}
 
 	// 标记为已读
-	err = h.notifyRepo.MarkAsRead(notificationID, userID)
+	err = h.systemMsgService.MarkAsRead(notificationID, userID)
 	if err != nil {
 		response.InternalServerError(c, "failed to mark as read")
 		return
 	}
-	cache.InvalidateUnreadSystem(h.cache, userID)
 
 	response.SuccessWithMessage(c, "marked as read", nil)
 }
@@ -165,12 +155,11 @@ func (h *SystemMessageHandler) MarkAllAsRead(c *gin.Context) {
 	}
 
 	// 标记当前用户所有通知为已读
-	err := h.notifyRepo.MarkAllAsRead(userID)
+	err := h.systemMsgService.MarkAllAsRead(userID)
 	if err != nil {
 		response.InternalServerError(c, "failed to mark all as read")
 		return
 	}
-	cache.InvalidateUnreadSystem(h.cache, userID)
 
 	response.SuccessWithMessage(c, "all messages marked as read", nil)
 }
@@ -192,12 +181,11 @@ func (h *SystemMessageHandler) DeleteSystemMessage(c *gin.Context) {
 	}
 
 	// 删除通知
-	err = h.notifyRepo.Delete(notificationID, userID)
+	err = h.systemMsgService.DeleteNotification(notificationID, userID)
 	if err != nil {
 		response.InternalServerError(c, "failed to delete notification")
 		return
 	}
-	cache.InvalidateUnreadSystem(h.cache, userID)
 
 	response.SuccessWithMessage(c, "notification deleted", nil)
 }