import dotenv from 'dotenv';
import path from 'path';
import { fileURLToPath } from 'url';
const here = path.dirname(fileURLToPath(import.meta.url));
const projectRoot = path.resolve(here, '..');
// Load env silently from project root to avoid cwd surprises.
dotenv.config({ quiet: true, path: path.join(projectRoot, '.env'), override: true });
/**
* Parse a positive integer from an environment variable.
* Returns the default value if parsing fails or the value is invalid.
*/
function parsePositiveInt(value: string | undefined, defaultValue: number): number {
if (!value) return defaultValue;
const parsed = Number.parseInt(value, 10);
if (!Number.isFinite(parsed) || parsed < 1) {
console.error(`Invalid integer value "${value}", using default: ${defaultValue}`);
return defaultValue;
}
return parsed;
}
/**
* Parse a float from an environment variable.
* Returns the default value if parsing fails.
*/
function parseFloat(value: string | undefined, defaultValue: number): number {
if (!value) return defaultValue;
const parsed = Number.parseFloat(value);
if (!Number.isFinite(parsed)) {
console.error(`Invalid float value "${value}", using default: ${defaultValue}`);
return defaultValue;
}
return parsed;
}
/**
* Application configuration loaded from environment variables.
*/
export const CONFIG = {
/** Preferred model name to request from the MCP client */
model: process.env.OPENAI_MODEL ?? 'gpt-4o-mini',
/** Maximum recursion depth for agent delegation (1-8) */
defaultMaxDepth: Math.min(8, Math.max(1, parsePositiveInt(process.env.AGENT_MAX_DEPTH, 3))),
/** Temperature hint for LLM completions (0-2) */
temperature: Math.min(2, Math.max(0, parseFloat(process.env.AGENT_TEMPERATURE, 0.2))),
/** Directory for session data persistence */
dataDir: process.env.AGENT_DATA_DIR ?? path.join(projectRoot, 'data'),
/** Project root directory */
projectRoot,
};
