feat(qs2) add qs2 framework

src/handlers/fileshdr/upload_mgr.go

@@ -0,0 +1,85 @@
+package fileshdr
+
+import (
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/ihexxa/quickshare/src/kvstore"
+)
+
+var (
+	isDirKey    = "isDir"
+	fileSizeKey = "fileSize"
+	uploadedKey = "uploaded"
+	filePathKey = "fileName"
+)
+
+type UploadMgr struct {
+	kv kvstore.IKVStore
+}
+
+func NewUploadMgr(kv kvstore.IKVStore) *UploadMgr {
+	return &UploadMgr{
+		kv: kv,
+	}
+}
+
+func (um *UploadMgr) AddInfo(fileName, tmpName string, fileSize int64, isDir bool) error {
+	err := um.kv.SetInt64(infoKey(tmpName, fileSizeKey), fileSize)
+	if err != nil {
+		return err
+	}
+	err = um.kv.SetInt64(infoKey(tmpName, uploadedKey), 0)
+	if err != nil {
+		return err
+	}
+	return um.kv.SetString(infoKey(tmpName, filePathKey), fileName)
+}
+
+func (um *UploadMgr) IncreUploaded(fileName string, newUploaded int64) error {
+	fileSize, ok := um.kv.GetInt64(infoKey(fileName, fileSizeKey))
+	if !ok {
+		return fmt.Errorf("file size %s not found", fileName)
+	}
+	preUploaded, ok := um.kv.GetInt64(infoKey(fileName, uploadedKey))
+	if !ok {
+		return fmt.Errorf("file uploaded %s not found", fileName)
+	}
+	if newUploaded+preUploaded <= fileSize {
+		um.kv.SetInt64(infoKey(fileName, uploadedKey), newUploaded+preUploaded)
+		return nil
+	}
+	return errors.New("uploaded is greater than file size")
+}
+
+func (um *UploadMgr) GetInfo(fileName string) (string, int64, int64, error) {
+	realFilePath, ok := um.kv.GetString(infoKey(fileName, filePathKey))
+	if !ok {
+		return "", 0, 0, os.ErrNotExist
+	}
+	fileSize, ok := um.kv.GetInt64(infoKey(fileName, fileSizeKey))
+	if !ok {
+		return "", 0, 0, os.ErrNotExist
+	}
+	uploaded, ok := um.kv.GetInt64(infoKey(fileName, uploadedKey))
+	if !ok {
+		return "", 0, 0, os.ErrNotExist
+	}
+
+	return realFilePath, fileSize, uploaded, nil
+}
+
+func (um *UploadMgr) DelInfo(fileName string) error {
+	if err := um.kv.DelInt64(infoKey(fileName, fileSizeKey)); err != nil {
+		return err
+	}
+	if err := um.kv.DelInt64(infoKey(fileName, uploadedKey)); err != nil {
+		return err
+	}
+	return um.kv.DelString(infoKey(fileName, filePathKey))
+}
+
+func infoKey(fileName, key string) string {
+	return fmt.Sprintf("%s:%s", fileName, key)
+}