Vendure Metal Price Plugin

A Vendure plugin for automatically updating product prices based on real-time precious metal market rates (Gold/Silver).

Features

• Custom Fields: Automatically extends ProductVariant with:

  • metalPriceMaterial: The type of precious metal (Gold/Silver/None)
  • metalPriceWeight: Weight in grams
  • metalPriceLaborCost: Manufacturing cost in cents

• Automatic Price Calculation:

  • Formula: New Price = (Live Price per Gram × Weight) + Labor Cost
  • Fetches live metal prices from external APIs
  • Updates product variant prices automatically

• GraphQL API: Exposes updateMetalPrices mutation for manual price updates (Admin only)

Installation

npm install vendure-plugin-metal-price

Usage

1. Import and register the plugin in your vendure-config.ts:

import { VendureConfig } from '@vendure/core';
import { MetalPricePlugin } from 'vendure-plugin-metal-price';

export const config: VendureConfig = {
  // ... other config
  plugins: [
    MetalPricePlugin,
    // ... other plugins
  ],
};

2. Configure product variants with metal pricing:

   • Set metalPriceMaterial to "Gold" or "Silver"
   • Set metalPriceWeight to the weight in grams
   • Set metalPriceLaborCost to the labor cost in cents

3. Trigger price updates via GraphQL:

mutation {
  updateMetalPrices {
    total
    successful
    failed
    results {
      variantId
      success
      newPrice
      error
    }
  }
}

Configuration

The plugin currently uses mocked metal prices. To integrate with a real API:

1. Update the METAL_PRICE_API constants in src/constants.ts
2. Modify the fetchMetalPrice method in src/metal-price.service.ts to use your API

License

MIT