From 076dcc7633fd0537c0255a98a31a59ca6f5d9de4 Mon Sep 17 00:00:00 2001
From: Vidhu Kant Sharma <vidhukant@vidhukant.com>
Date: Sun, 3 Sep 2023 20:31:56 +0530
Subject: user can only access data generated by the same user now

---
 item/validators.go | 72 +++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 52 insertions(+), 20 deletions(-)

(limited to 'item/validators.go')

diff --git a/item/validators.go b/item/validators.go
index 996a5d7..e931843 100644
--- a/item/validators.go
+++ b/item/validators.go
@@ -51,26 +51,6 @@ func (b *Brand) validate() error {
 	return nil
 }
 
-func checkIfBrandExists(id, userId uint) error {
-	// check if brand id is valid and is owned by user
-	var count int64
-	err := db.Model(&Brand{}).
-		Select("id").
-		Where("id = ? and user_id = ?", id, userId).
-		Count(&count).
-		Error
-
-	if err != nil {
-		return err
-  }
-
-	if count == 0 {
-		return errors.ErrBrandNotFound
-	}
-
-	return nil
-}
-
 func (i *SavedItem) validate() error {
 	// trim whitespaces
 	i.Name = strings.TrimSpace(i.Name)
@@ -109,3 +89,55 @@ func (i *SavedItem) validate() error {
 
 	return nil
 }
+
+func checkBrandOwnership(brandId, userId uint) error {
+	var brand Brand
+	err := db.
+		Select("id", "user_id").
+		Where("id = ?", brandId).
+		Find(&brand).
+		Error
+
+	// TODO: handle potential errors
+	if err != nil {
+		return err
+  }
+
+	// brand doesn't exist
+	if brand.ID == 0 {
+		return errors.ErrBrandNotFound
+	}
+
+	// user doesn't own this brand
+	if brand.UserID != userId {
+		return errors.ErrForbidden
+	}
+
+	return nil
+}
+
+func checkItemOwnership(itemId, userId uint) error {
+	var item SavedItem
+	err := db.
+		Select("id", "user_id").
+		Where("id = ?", itemId).
+		Find(&item).
+		Error
+
+	// TODO: handle potential errors
+	if err != nil {
+		return err
+  }
+
+	// item doesn't exist
+	if item.ID == 0 {
+		return errors.ErrNotFound
+	}
+
+	// user doesn't own this item
+	if item.UserID != userId {
+		return errors.ErrForbidden
+	}
+
+	return nil
+}
-- 
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