fix(drivers): free space underflow if used larger than total space

drivers/123/driver.go

@@ -260,10 +260,7 @@ func (d *Pan123) GetDetails(ctx context.Context) (*model.StorageDetails, error)
 	}
 	total := userInfo.Data.SpacePermanent + userInfo.Data.SpaceTemp
 	return &model.StorageDetails{
-		DiskUsage: model.DiskUsage{
-			TotalSpace: total,
-			FreeSpace:  total - userInfo.Data.SpaceUsed,
-		},
+		DiskUsage: *model.NewDiskUsageFromUsedAndTotal(userInfo.Data.SpaceUsed, total),
 	}, nil
 }
 

drivers/aliyundrive/driver.go

@@ -337,10 +337,7 @@ func (d *AliDrive) GetDetails(ctx context.Context) (*model.StorageDetails, error
 	used := utils.Json.Get(res, "drive_used_size").ToUint64()
 	total := utils.Json.Get(res, "drive_total_size").ToUint64()
 	return &model.StorageDetails{
-		DiskUsage: model.DiskUsage{
-			TotalSpace: total,
-			FreeSpace:  total - used,
-		},
+		DiskUsage: *model.NewDiskUsageFromUsedAndTotal(used, total),
 	}, nil
 }
 

drivers/baidu_netdisk/util.go

@@ -390,10 +390,7 @@ func (d *BaiduNetdisk) quota(ctx context.Context) (*model.DiskUsage, error) {
 	if err != nil {
 		return nil, err
 	}
-	return &model.DiskUsage{
-		TotalSpace: resp.Total,
-		FreeSpace:  resp.Total - resp.Used,
-	}, nil
+	return model.NewDiskUsageFromUsedAndTotal(resp.Used, resp.Total), nil
 }
 
 // func encodeURIComponent(str string) string {

drivers/cloudreve_v4/driver.go

@@ -349,10 +349,7 @@ func (d *CloudreveV4) GetDetails(ctx context.Context) (*model.StorageDetails, er
 		return nil, err
 	}
 	return &model.StorageDetails{
-		DiskUsage: model.DiskUsage{
-			TotalSpace: r.Total,
-			FreeSpace:  r.Total - r.Used,
-		},
+		DiskUsage: *model.NewDiskUsageFromUsedAndTotal(r.Used, r.Total),
 	}, nil
 }
 

drivers/google_drive/driver.go

@@ -189,10 +189,7 @@ func (d *GoogleDrive) GetDetails(ctx context.Context) (*model.StorageDetails, er
 		return nil, err
 	}
 	return &model.StorageDetails{
-		DiskUsage: model.DiskUsage{
-			TotalSpace: total,
-			FreeSpace:  total - used,
-		},
+		DiskUsage: *model.NewDiskUsageFromUsedAndTotal(used, total),
 	}, nil
 }
 

drivers/ilanzou/driver.go

@@ -412,10 +412,7 @@ func (d *ILanZou) GetDetails(ctx context.Context) (*model.StorageDetails, error)
 	total := utils.Json.Get(res, "map", "totalSize").ToUint64() * 1024
 	used := utils.Json.Get(res, "map", "usedSize").ToUint64() * 1024
 	return &model.StorageDetails{
-		DiskUsage: model.DiskUsage{
-			TotalSpace: total,
-			FreeSpace:  total - used,
-		},
+		DiskUsage: *model.NewDiskUsageFromUsedAndTotal(used, total),
 	}, nil
 }
 

internal/model/storage.go

@@ -61,6 +61,13 @@ type DiskUsage struct {
 	FreeSpace  uint64 `json:"free_space"`
 }
 
+func NewDiskUsageFromUsedAndTotal(used, total uint64) *DiskUsage {
+	return &DiskUsage{
+		TotalSpace: max(used, total),
+		FreeSpace: total - min(used, total),
+	}
+}
+
 type StorageDetails struct {
 	DiskUsage
 }