feat: 初始提交云印享付费打印服务后端

cloudprint-backend/internal/repository/file_repository.go

@@ -0,0 +1,67 @@
+package repository
+
+import (
+	"context"
+	"errors"
+
+	"github.com/cloudprint/cloudprint-backend/internal/model"
+	"gorm.io/gorm"
+)
+
+type FileRepository struct {
+	db *gorm.DB
+}
+
+func NewFileRepository(db *gorm.DB) *FileRepository {
+	return &FileRepository{db: db}
+}
+
+func (r *FileRepository) Create(ctx context.Context, file *model.File) error {
+	return r.db.WithContext(ctx).Create(file).Error
+}
+
+func (r *FileRepository) GetByID(ctx context.Context, id int32) (*model.File, error) {
+	var file model.File
+	err := r.db.WithContext(ctx).First(&file, id).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &file, nil
+}
+
+func (r *FileRepository) Delete(ctx context.Context, id int32) error {
+	return r.db.WithContext(ctx).Delete(&model.File{}, id).Error
+}
+
+func (r *FileRepository) GetListByUploader(ctx context.Context, uploaderType string, uploaderID int32, page, pageSize int) ([]*model.File, int64, error) {
+	var files []*model.File
+	var total int64
+
+	query := r.db.WithContext(ctx).Model(&model.File{})
+	if uploaderType != "" {
+		query = query.Where("uploader_type = ?", uploaderType)
+	}
+	if uploaderID > 0 {
+		query = query.Where("uploader_id = ?", uploaderID)
+	}
+
+	err := query.Count(&total).Error
+	if err != nil {
+		return nil, 0, err
+	}
+
+	offset := (page - 1) * pageSize
+	err = query.Offset(offset).Limit(pageSize).Order("created_at DESC").Find(&files).Error
+	if err != nil {
+		return nil, 0, err
+	}
+
+	return files, total, nil
+}
+
+func (r *FileRepository) Update(ctx context.Context, file *model.File) error {
+	return r.db.WithContext(ctx).Save(file).Error
+}