added curve menu and lookup index perhaps need to do the same for asset lookup later?

datasets/assetData/curves/index.js

@@ -0,0 +1,124 @@
+const fs = require('fs');
+const path = require('path');
+
+class AssetLoader {
+  constructor() {
+    this.relPath = './'
+    this.baseDir = path.resolve(__dirname, this.relPath);
+    this.cache = new Map(); // Cache loaded JSON files for better performance
+  }
+
+  /**
+   * Load a specific curve by type
+   * @param {string} curveType - The curve identifier (e.g., 'hidrostal-H05K-S03R')
+   * @returns {Object|null} The curve data object or null if not found
+   */
+  loadCurve(curveType) {
+    return this.loadAsset('curves', curveType);
+  }
+
+  /**
+   * Load any asset from a specific dataset folder
+   * @param {string} datasetType - The dataset folder name (e.g., 'curves', 'assetData')
+   * @param {string} assetId - The specific asset identifier
+   * @returns {Object|null} The asset data object or null if not found
+   */
+  loadAsset(datasetType, assetId) {
+    //const cacheKey = `${datasetType}/${assetId}`;
+    const cacheKey = `${assetId}`;
+
+    
+    // Check cache first
+    if (this.cache.has(cacheKey)) {
+      return this.cache.get(cacheKey);
+    }
+
+    try {
+      const filePath = path.join(this.baseDir, `${assetId}.json`);
+
+      // Check if file exists
+      if (!fs.existsSync(filePath)) {
+        console.warn(`Asset not found: ${filePath}`);
+        return null;
+      }
+
+      // Load and parse JSON
+      const rawData = fs.readFileSync(filePath, 'utf8');
+      const assetData = JSON.parse(rawData);
+      
+      // Cache the result
+      this.cache.set(cacheKey, assetData);
+      
+      return assetData;
+    } catch (error) {
+      console.error(`Error loading asset ${cacheKey}:`, error.message);
+      return null;
+    }
+  }
+
+  /**
+   * Get all available assets in a dataset
+   * @param {string} datasetType - The dataset folder name
+   * @returns {string[]} Array of available asset IDs
+   */
+  getAvailableAssets(datasetType) {
+    try {
+      const datasetPath = path.join(this.baseDir, datasetType);
+      
+      if (!fs.existsSync(datasetPath)) {
+        return [];
+      }
+
+      return fs.readdirSync(datasetPath)
+        .filter(file => file.endsWith('.json'))
+        .map(file => file.replace('.json', ''));
+    } catch (error) {
+      console.error(`Error reading dataset ${datasetType}:`, error.message);
+      return [];
+    }
+  }
+
+  /**
+   * Clear the cache (useful for development/testing)
+   */
+  clearCache() {
+    this.cache.clear();
+  }
+}
+
+// Create and export a singleton instance
+const assetLoader = new AssetLoader();
+
+module.exports = {
+  AssetLoader,
+  assetLoader,
+  // Convenience methods for backward compatibility
+  loadCurve: (curveType) => assetLoader.loadCurve(curveType),
+  loadAsset: (datasetType, assetId) => assetLoader.loadAsset(datasetType, assetId),
+  getAvailableAssets: (datasetType) => assetLoader.getAvailableAssets(datasetType)
+};
+
+/*
+// Example usage in your scripts
+const loader = new AssetLoader();
+
+// Load a specific curve
+const curve = loader.loadCurve('hidrostal-H05K-S03R');
+if (curve) {
+  console.log('Curve loaded:', curve);
+} else {
+  console.log('Curve not found');
+}
+/*
+// Load any asset from any dataset
+const someAsset = loadAsset('assetData', 'some-asset-id');
+
+// Get list of available curves
+const availableCurves = getAvailableAssets('curves');
+console.log('Available curves:', availableCurves);
+
+// Using the class directly for more control
+const { AssetLoader } = require('./index.js');
+const customLoader = new AssetLoader();
+const data = customLoader.loadCurve('hidrostal-H05K-S03R');
+*/