fix pull race

server/models.go

@@ -76,22 +76,10 @@ func saveModel(model *Model, fn func(total, completed int64)) error {
 		return fmt.Errorf("failed to download model: %w", err)
 	}
 
-	// check if completed file exists
-	fi, err := os.Stat(model.FullName())
-	switch {
-	case errors.Is(err, os.ErrNotExist):
-		// noop, file doesn't exist so create it
-	case err != nil:
-		return fmt.Errorf("stat: %w", err)
-	default:
-		fn(fi.Size(), fi.Size())
-		return nil
-	}
-
 	var size int64
 
 	// completed file doesn't exist, check partial file
-	fi, err = os.Stat(model.TempFile())
+	fi, err := os.Stat(model.TempFile())
 	switch {
 	case errors.Is(err, os.ErrNotExist):
 		// noop, file doesn't exist so create it

server/routes.go

@@ -105,6 +105,24 @@ func pull(c *gin.Context) {
 		return
 	}
 
+	// check if completed file exists
+	fi, err := os.Stat(remote.FullName())
+	switch {
+	case errors.Is(err, os.ErrNotExist):
+		// noop, file doesn't exist so create it
+	case err != nil:
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	default:
+		c.JSON(http.StatusOK, api.PullProgress{
+			Total:     fi.Size(),
+			Completed: fi.Size(),
+			Percent:   100,
+		})
+
+		return
+	}
+
 	ch := make(chan any)
 	go stream(c, ch)