import { z } from 'zod';
import { Logger } from './utils/logger.js';
import dotenv from 'dotenv';
// Suppress dotenv output to avoid corrupting MCP stdout stream
const originalWrite = process.stdout.write;
process.stdout.write = function () { return true; } as typeof process.stdout.write;
try {
dotenv.config();
} finally {
process.stdout.write = originalWrite;
}
const log = new Logger('Config');
const stringToBoolean = (val: unknown) => {
if (typeof val === 'boolean') return val;
if (typeof val === 'string') {
const lower = val.toLowerCase().trim();
return lower === 'true' || lower === '1' || lower === 'on';
}
return false;
};
const stringToNumber = (val: unknown, defaultVal: number) => {
if (typeof val === 'number') return val;
if (typeof val === 'string') {
const parsed = parseInt(val, 10);
return isNaN(parsed) ? defaultVal : parsed;
}
return defaultVal;
};
export const EnvSchema = z.object({
// Server Settings
NODE_ENV: z.enum(['development', 'production', 'test']).default('development'),
LOG_LEVEL: z.enum(['debug', 'info', 'warn', 'error']).default('debug'),
MCP_ROUTE_STDOUT_LOGS: z.preprocess(stringToBoolean, z.boolean().default(true)),
// Unreal Settings
UE_PROJECT_PATH: z.string().optional(),
UE_EDITOR_EXE: z.string().optional(),
// Connection Settings
MCP_AUTOMATION_PORT: z.preprocess((v) => stringToNumber(v, 8091), z.number().default(8091)),
MCP_AUTOMATION_HOST: z.string().default('127.0.0.1'),
MCP_AUTOMATION_CLIENT_MODE: z.preprocess(stringToBoolean, z.boolean().default(false)),
// Timeouts
MCP_CONNECTION_TIMEOUT_MS: z.preprocess((v) => stringToNumber(v, 5000), z.number().default(5000)),
MCP_REQUEST_TIMEOUT_MS: z.preprocess((v) => stringToNumber(v, 30000), z.number().default(30000)),
// Tool Categories (comma-separated: core,world,authoring,gameplay,utility,all)
MCP_DEFAULT_CATEGORIES: z.string().default('core'),
});
export type Config = z.infer<typeof EnvSchema>;
let config: Config;
try {
config = EnvSchema.parse(process.env);
log.debug('Configuration loaded successfully');
} catch (error) {
if (error instanceof z.ZodError) {
log.error('❌ Invalid configuration:', error.format());
log.warn('⚠️ Falling back to safe defaults.');
// Fallback to parsing an empty object to get all defaults
config = EnvSchema.parse({});
} else {
throw error;
}
}
export { config };
