vibase

import * as yaml from "js-yaml"; import { readFileSync } from "fs"; import Handlebars from "handlebars"; import { validateConfig, type ToolboxConfig } from "./validate-config.js"; /** * Load and validate configuration from a YAML file */ export function loadConfigFromYaml(configPath: string): ToolboxConfig { try { const yamlContent = readFileSync(configPath, "utf8"); return loadConfigFromYamlString(yamlContent); } catch (error: any) { if (error.code === "ENOENT") { throw new Error(`YAML configuration file not found: ${configPath}`); } throw new Error(`Failed to read YAML configuration file: ${error.message}`); } } /** * Process template variables in YAML content using Handlebars * Supports environment variables and provides helpful defaults */ function processTemplate(content: string): string { // Create template context with environment variables and helpers const context = { env: process.env, ...process.env, // Allow direct access to env vars without 'env.' prefix }; // Register helper for default values Handlebars.registerHelper( "default", function (value: any, defaultValue: any) { return value != null && value !== "" ? value : defaultValue; } ); // Register helper for environment variables with defaults Handlebars.registerHelper( "envDefault", function (varName: string, defaultValue: any) { const envValue = process.env[varName]; return envValue != null && envValue !== "" ? envValue : defaultValue; } ); try { const template = Handlebars.compile(content); return template(context); } catch (error: any) { throw new Error(`Template processing failed: ${error.message}`); } } /** * Load and validate configuration from a YAML string */ export function loadConfigFromYamlString(yamlContent: string): ToolboxConfig { try { // Process template variables using Handlebars before parsing YAML const processedContent = processTemplate(yamlContent); const config = yaml.load(processedContent); return validateConfig(config); } catch (error: any) { if (error.name === "YAMLException") { throw new Error(`Invalid YAML syntax: ${error.message}`); } throw error; } }