后端重构

internal/biz/example/breakpoint_continue.go

@@ -0,0 +1,56 @@
+package example
+
+import (
+	"context"
+)
+
+// ExaFile 文件实体
+type ExaFile struct {
+	ID           uint
+	FileName     string
+	FileMd5      string
+	FilePath     string
+	ChunkTotal   int
+	IsFinish     bool
+	ExaFileChunk []ExaFileChunk
+}
+
+// ExaFileChunk 文件切片实体
+type ExaFileChunk struct {
+	ID              uint
+	ExaFileID       uint
+	FileChunkNumber int
+	FileChunkPath   string
+}
+
+// BreakpointContinueRepo 断点续传仓储接口
+type BreakpointContinueRepo interface {
+	FindOrCreateFile(ctx context.Context, fileMd5, fileName string, chunkTotal int) (*ExaFile, error)
+	CreateFileChunk(ctx context.Context, fileID uint, fileChunkPath string, fileChunkNumber int) error
+	DeleteFileChunk(ctx context.Context, fileMd5, filePath string) error
+}
+
+// BreakpointContinueUsecase 断点续传用例
+type BreakpointContinueUsecase struct {
+	repo BreakpointContinueRepo
+}
+
+// NewBreakpointContinueUsecase 创建断点续传用例
+func NewBreakpointContinueUsecase(repo BreakpointContinueRepo) *BreakpointContinueUsecase {
+	return &BreakpointContinueUsecase{repo: repo}
+}
+
+// FindOrCreateFile 查找或创建文件记录
+func (uc *BreakpointContinueUsecase) FindOrCreateFile(ctx context.Context, fileMd5, fileName string, chunkTotal int) (*ExaFile, error) {
+	return uc.repo.FindOrCreateFile(ctx, fileMd5, fileName, chunkTotal)
+}
+
+// CreateFileChunk 创建文件切片记录
+func (uc *BreakpointContinueUsecase) CreateFileChunk(ctx context.Context, fileID uint, fileChunkPath string, fileChunkNumber int) error {
+	return uc.repo.CreateFileChunk(ctx, fileID, fileChunkPath, fileChunkNumber)
+}
+
+// DeleteFileChunk 删除文件切片记录
+func (uc *BreakpointContinueUsecase) DeleteFileChunk(ctx context.Context, fileMd5, filePath string) error {
+	return uc.repo.DeleteFileChunk(ctx, fileMd5, filePath)
+}