Initial backend repository commit.

Set up project files and add .gitignore to exclude local build/runtime artifacts.

Made-with: Cursor

internal/repository/notification_repo.go

@@ -0,0 +1,78 @@
+package repository
+
+import (
+	"carrot_bbs/internal/model"
+
+	"gorm.io/gorm"
+)
+
+// NotificationRepository 通知仓储
+type NotificationRepository struct {
+	db *gorm.DB
+}
+
+// NewNotificationRepository 创建通知仓储
+func NewNotificationRepository(db *gorm.DB) *NotificationRepository {
+	return &NotificationRepository{db: db}
+}
+
+// Create 创建通知
+func (r *NotificationRepository) Create(notification *model.Notification) error {
+	return r.db.Create(notification).Error
+}
+
+// GetByID 根据ID获取通知
+func (r *NotificationRepository) GetByID(id string) (*model.Notification, error) {
+	var notification model.Notification
+	err := r.db.First(&notification, "id = ?", id).Error
+	if err != nil {
+		return nil, err
+	}
+	return &notification, nil
+}
+
+// GetByUserID 获取用户通知
+func (r *NotificationRepository) GetByUserID(userID string, page, pageSize int, unreadOnly bool) ([]*model.Notification, int64, error) {
+	var notifications []*model.Notification
+	var total int64
+
+	query := r.db.Model(&model.Notification{}).Where("user_id = ?", userID)
+
+	if unreadOnly {
+		query = query.Where("is_read = ?", false)
+	}
+
+	query.Count(&total)
+
+	offset := (page - 1) * pageSize
+	err := query.Offset(offset).Limit(pageSize).Order("created_at DESC").Find(&notifications).Error
+
+	return notifications, total, err
+}
+
+// MarkAsRead 标记为已读
+func (r *NotificationRepository) MarkAsRead(id string) error {
+	return r.db.Model(&model.Notification{}).Where("id = ?", id).Update("is_read", true).Error
+}
+
+// MarkAllAsRead 标记所有为已读
+func (r *NotificationRepository) MarkAllAsRead(userID string) error {
+	return r.db.Model(&model.Notification{}).Where("user_id = ?", userID).Update("is_read", true).Error
+}
+
+// Delete 删除通知
+func (r *NotificationRepository) Delete(id string) error {
+	return r.db.Delete(&model.Notification{}, "id = ?", id).Error
+}
+
+// GetUnreadCount 获取未读数量
+func (r *NotificationRepository) GetUnreadCount(userID string) (int64, error) {
+	var count int64
+	err := r.db.Model(&model.Notification{}).Where("user_id = ? AND is_read = ?", userID, false).Count(&count).Error
+	return count, err
+}
+
+// DeleteAllByUserID 删除用户所有通知
+func (r *NotificationRepository) DeleteAllByUserID(userID string) error {
+	return r.db.Where("user_id = ?", userID).Delete(&model.Notification{}).Error
+}