# 🔧 AppWrite userId Attribute Fix - Step by Step

## Current Problem ❌

Your AppWrite collections are missing the **critical `userId` attribute**. The error logs show:

```
Invalid query: Attribute not found in schema: userId
```

This happens because the extension tries to filter data by `userId` but the collections don't have this attribute.

## Quick Fix Solution ✅

### Step 1: Access Your AppWrite Console
1. **Go to**: https://appwrite.webklar.com
2. **Login** with your credentials  
3. **Select project**: `6963df38003b96dab5aa`
4. **Navigate to**: Databases → `amazon-extension-db`

### Step 2: Add userId Attribute to Each Collection

You need to add the `userId` attribute to **all 5 collections**:

#### Collection 1: `amazon-ext-enhanced-items`
1. **Click** on `amazon-ext-enhanced-items`
2. **Go to** "Attributes" tab
3. **Click** "Create Attribute"
4. **Select** "String"
5. **Enter**:
   - Key: `userId`
   - Size: `255`
   - Required: ✅ **Yes**
   - Array: ❌ No
6. **Click** "Create"

#### Collection 2: `amazon-ext-saved-products`
1. **Click** on `amazon-ext-saved-products`
2. **Go to** "Attributes" tab
3. **Click** "Create Attribute"
4. **Select** "String"
5. **Enter**:
   - Key: `userId`
   - Size: `255`
   - Required: ✅ **Yes**
   - Array: ❌ No
6. **Click** "Create"

#### Collection 3: `amazon_ext_blacklist`
1. **Click** on `amazon_ext_blacklist`
2. **Go to** "Attributes" tab
3. **Click** "Create Attribute"
4. **Select** "String"
5. **Enter**:
   - Key: `userId`
   - Size: `255`
   - Required: ✅ **Yes**
   - Array: ❌ No
6. **Click** "Create"

#### Collection 4: `amazon-ext-enhanced-settings`
1. **Click** on `amazon-ext-enhanced-settings`
2. **Go to** "Attributes" tab
3. **Click** "Create Attribute"
4. **Select** "String"
5. **Enter**:
   - Key: `userId`
   - Size: `255`
   - Required: ✅ **Yes**
   - Array: ❌ No
6. **Click** "Create"

#### Collection 5: `amazon-ext-migration-status`
1. **Click** on `amazon-ext-migration-status`
2. **Go to** "Attributes" tab
3. **Click** "Create Attribute"
4. **Select** "String"
5. **Enter**:
   - Key: `userId`
   - Size: `255`
   - Required: ✅ **Yes**
   - Array: ❌ No
6. **Click** "Create"

### Step 3: Fix Permissions (Critical!)

After adding `userId` attributes, you **must** fix permissions for each collection:

**For EACH collection**:
1. **Click** on the collection name
2. **Go to** "Settings" tab (not "Attributes")
3. **Scroll down** to "Permissions" section
4. **Set these exact permissions**:

   **Create Permission**:
   - Click "Add a permission"
   - Select: `users`
   - Click "Add"

   **Read Permission**:
   - Click "Add a permission"
   - Select: `user:$userId`
   - Click "Add"

   **Update Permission**:
   - Click "Add a permission"
   - Select: `user:$userId`
   - Click "Add"

   **Delete Permission**:
   - Click "Add a permission"
   - Select: `user:$userId`
   - Click "Add"

5. **Click** "Update" to save

## Step 4: Test the Fix ✅

1. **Reload your Chrome extension**
2. **Go to Amazon**: https://amazon.de/s?k=smartphone
3. **Open browser console** (F12)
4. **Check for errors** - should see no more "userId" errors
5. **Test Enhanced Items** - should work without errors

## Expected Results After Fix ✅

**Console should show**:
```
✅ AppWrite connection successful
✅ Collections accessible
✅ Real-time sync working
✅ No more "Invalid query: Attribute not found in schema: userId" errors
```

**Extension should work**:
- ✅ Enhanced Items panel opens
- ✅ Items can be saved to AppWrite
- ✅ Data appears in AppWrite console
- ✅ Real-time sync between tabs

## Visual Guide 📸

### Finding the Attributes Tab:
```
AppWrite Console
└── Databases
    └── amazon-extension-db
        └── [Collection Name] ← Click here
            ├── Documents
            ├── Attributes ← Go here to add userId
            └── Settings ← Go here for permissions
```

### Adding userId Attribute:
```
Attributes Tab
└── Create Attribute
    ├── Type: String ← Select this
    ├── Key: userId ← Enter this
    ├── Size: 255 ← Enter this
    ├── Required: ✅ ← Check this
    └── Array: ❌ ← Leave unchecked
```

### Setting Permissions:
```
Settings Tab
└── Permissions Section
    ├── Create: users ← Any authenticated user can create
    ├── Read: user:$userId ← Users can only read their own data
    ├── Update: user:$userId ← Users can only update their own data
    └── Delete: user:$userId ← Users can only delete their own data
```

## Troubleshooting 🔧

**Still getting "userId" errors?**
1. ✅ Make sure you added `userId` to ALL 5 collections
2. ✅ Check that `userId` is marked as "Required"
3. ✅ Verify the attribute name is exactly `userId` (case-sensitive)
4. ✅ Clear browser cache and reload extension

**Still getting 401 permission errors?**
1. ✅ Make sure permissions are set correctly for ALL collections
2. ✅ Use `user:$userId` not just `users` for Read/Update/Delete
3. ✅ Try logging out and back in to the extension

**Collections not found?**
1. ✅ Make sure you're in the right project: `6963df38003b96dab5aa`
2. ✅ Check database name: `amazon-extension-db`
3. ✅ Collection names must match exactly (case-sensitive)

## Alternative: Use Test Tool 🧪

Open this file in your browser to automatically test your collections:
- `test-appwrite-collections.html`

This will tell you exactly which collections are missing the `userId` attribute.

## Why This Happened 🤔

The collections were created without the `userId` attribute, but the extension code expects it to exist for:
- **Data isolation**: Each user only sees their own data
- **Security**: Prevents users from accessing other users' data  
- **Filtering**: All queries filter by `userId` to get user-specific data

Adding the `userId` attribute and setting proper permissions fixes this issue permanently.