# Vehicle Color Update Guide
## ✅ **Issue Fixed**
The vehicle color update functionality has been improved to handle the API's color structure correctly.
### **Problem**
Previously, updating a vehicle's color would only update the `color` field, leaving the `colorBase` object inconsistent, causing API validation errors.
### **Solution**
The `updateVehicle` method now:
1. **Looks up colors** from the API's color reference data
2. **Updates both fields** consistently:
- `color`: The display name (e.g., "Rosso")
- `colorBase`: The structured object with name and description
3. **Handles fallbacks** gracefully when colors aren't found
## **How to Use**
### **Step 1: Get Available Colors**
```javascript
// Use the MCP tool to see available colors
get_vehicle_colors()
```
This returns colors like:
```
🎨 Available Vehicle Colors:
1. **Bianco** (Bianco)
2. **Nero** (Nero)
3. **Rosso** (Rosso)
4. **Blu** (Blu)
5. **Grigio** (Grigio)
...
```
### **Step 2: Update Vehicle Color**
```javascript
// Use the exact color name from the list
update_vehicle({
vehicleId: 9765338,
updates: {
color: "Rosso"
}
})
```
### **What Happens Behind the Scenes**
```javascript
// Before (incorrect):
{
"color": "Rosso",
"colorBase": {
"name": "PINK", // ❌ Inconsistent!
"description": "Rosa"
}
}
// After (correct):
{
"color": "Rosso",
"colorBase": {
"name": "RED", // ✅ Consistent!
"description": "Rosso"
}
}
```
## **Advanced Usage**
### **Case-Insensitive Matching**
The system now handles case-insensitive color matching:
```javascript
// All of these work:
update_vehicle({vehicleId: 123, updates: {color: "rosso"}})
update_vehicle({vehicleId: 123, updates: {color: "ROSSO"}})
update_vehicle({vehicleId: 123, updates: {color: "Rosso"}})
```
### **Fallback Behavior**
If a color isn't found in the reference data:
- The provided color is used as-is
- `colorBase` is set to `null` to avoid inconsistency
- The API will validate the color value
### **Error Handling**
Improved error messages guide users to correct usage:
```
❌ Color update failed: Invalid color value
💡 Tip: Use get_vehicle_colors to see all available color options, then use the exact color name.
```
## **Technical Implementation**
### **Enhanced `updateVehicle` Method**
```javascript
// In src/api/vehicles.js
async updateVehicle(vehicleId, updates) {
// Get current vehicle
const currentVehicle = await this.getVehicle(vehicleId);
// Special handling for color updates
if (updates.color) {
const colorsResponse = await this.client.get('/refdata/colors');
const colors = Array.isArray(colorsResponse) ? colorsResponse : (colorsResponse.values || []);
const matchingColor = colors.find(c =>
c.name.toLowerCase() === updates.color.toLowerCase() ||
(c.description && c.description.toLowerCase() === updates.color.toLowerCase())
);
if (matchingColor) {
updates.color = matchingColor.description || matchingColor.name;
updates.colorBase = {
name: matchingColor.name,
description: matchingColor.description || matchingColor.name
};
}
}
// Continue with update...
}
```
### **Improved Tool Description**
```javascript
// In src/tools/vehicle-tools.js
description: `Update multiple vehicle attributes (POC - no validation)
Available fields: mileage, numberPlate, description, color, any vehicle attribute
💡 For color updates: Use get_vehicle_colors first to see available options, then use the exact color name.`
```
## **Benefits**
✅ **Consistent data**: Both `color` and `colorBase` are always synchronized
✅ **Better UX**: Clear guidance and helpful error messages
✅ **Robust**: Handles edge cases and API inconsistencies gracefully
✅ **Case-insensitive**: Flexible input handling
✅ **Backward compatible**: Existing code continues to work
## **Usage Examples**
### **Example 1: Update Toyota Yaris to Red**
```javascript
// 1. Check available colors
get_vehicle_colors()
// 2. Update to red
update_vehicle({
vehicleId: 9765338,
updates: {color: "Rosso"}
})
// Response:
// ✅ Vehicle 9765338 updated successfully!
// 📝 Updated fields: color
//
// 💡 Color updated to: Rosso
// Note: Both color and colorBase fields were updated for consistency.
```
### **Example 2: Multiple Field Update Including Color**
```javascript
update_vehicle({
vehicleId: 9765338,
updates: {
color: "Blu",
mileage: 45000,
numberPlate: "AB123CD"
}
})
```
### **Example 3: Error Handling**
```javascript
// Invalid color
update_vehicle({
vehicleId: 9765338,
updates: {color: "Purple"}
})
// Response:
// ❌ Color update failed: Invalid color value
//
// 💡 Tip: Use get_vehicle_colors to see all available color options, then use the exact color name.
```
## **Testing**
All existing tests continue to pass, ensuring the fix doesn't break other functionality:
```bash
npm test
# 🎯 OVERALL: 8/8 tests passed (100.0%)
```