TouchDesigner MCP

import { ZodError } from "zod"; import type { Result } from "../core/result.js"; import { createErrorResult, createSuccessResult } from "../core/result.js"; import type { TransportConfig } from "./config.js"; import { TransportConfigSchema } from "./config.js"; /** * Validation error details */ export interface ValidationError { field: string; message: string; } /** * Transport configuration validator using Zod schemas */ export class TransportConfigValidator { /** * Validate a transport configuration * * @param config - The configuration to validate * @returns Result with validated config or validation errors */ static validate(config: unknown): Result<TransportConfig, Error> { try { const validatedConfig = TransportConfigSchema.parse(config); return createSuccessResult(validatedConfig); } catch (error) { if (error instanceof ZodError) { const validationErrors = TransportConfigValidator.formatZodErrors(error); const errorMessage = TransportConfigValidator.buildErrorMessage(validationErrors); return createErrorResult(new Error(errorMessage)); } // Unexpected error const err = error instanceof Error ? error : new Error(String(error)); return createErrorResult( new Error(`Transport configuration validation failed: ${err.message}`), ); } } /** * Format Zod validation errors into structured ValidationError objects * * @param zodError - The Zod validation error * @returns Array of structured validation errors */ private static formatZodErrors(zodError: ZodError): ValidationError[] { return zodError.issues.map((err) => ({ field: err.path.join("."), message: err.message, })); } /** * Build a comprehensive error message from validation errors * * @param errors - Array of validation errors * @returns Formatted error message */ private static buildErrorMessage(errors: ValidationError[]): string { const errorLines = errors.map((err) => { if (err.field) { return ` - ${err.field}: ${err.message}`; } return ` - ${err.message}`; }); return `Transport configuration validation failed:\n${errorLines.join("\n")}`; } /** * Validate and merge with defaults for HTTP transport * This is a convenience method for applying default values after validation * * @param config - The configuration to validate * @returns Result with validated and merged config */ static validateAndMergeDefaults( config: unknown, ): Result<TransportConfig, Error> { const validationResult = TransportConfigValidator.validate(config); if (!validationResult.success) { return validationResult; } // No merging needed for stdio if (validationResult.data.type === "stdio") { return validationResult; } // Merge defaults for HTTP transport // Note: Defaults are already defined in config.ts // This method is here for future extensibility if runtime merging is needed return validationResult; } }