/**
* Copyright 2025 Chris Bunting <cbuntingde@gmail.com>
*
* Configuration Management - Centralized configuration with validation
*/
import { z } from 'zod';
import dotenv from 'dotenv';
dotenv.config();
/**
* Configuration schema
*/
const ConfigSchema = z.object({
// GitHub Configuration
GITHUB_TOKEN: z.string().optional(),
// Server Configuration
NODE_ENV: z.enum(['development', 'production', 'test']).default('production'),
LOG_LEVEL: z.enum(['DEBUG', 'INFO', 'WARN', 'ERROR']).optional(),
// Rate Limiting
GITHUB_RATE_LIMIT_PER_HOUR: z.coerce.number().int().positive().default(5000),
GITHUB_RATE_LIMIT_BURST: z.coerce.number().int().positive().default(100),
// Timeouts (in milliseconds)
GITHUB_REQUEST_TIMEOUT: z.coerce.number().int().positive().default(30000),
SCAN_TIMEOUT: z.coerce.number().int().positive().default(300000), // 5 minutes
// Retry Configuration
MAX_RETRIES: z.coerce.number().int().min(0).max(10).default(3),
RETRY_DELAY_BASE: z.coerce.number().int().positive().default(1000),
RETRY_DELAY_MAX: z.coerce.number().int().positive().default(30000),
// File Processing
MAX_FILE_SIZE: z.coerce.number().int().positive().default(10 * 1024 * 1024), // 10MB
MAX_FILES_PER_SCAN: z.coerce.number().int().positive().default(10000),
// Circuit Breaker
CIRCUIT_BREAKER_THRESHOLD: z.coerce.number().int().positive().default(5),
CIRCUIT_BREAKER_TIMEOUT: z.coerce.number().int().positive().default(60000), // 1 minute
});
type Config = z.infer<typeof ConfigSchema>;
/**
* Parse and validate configuration
*/
function loadConfig(): Config {
try {
const rawConfig = {
GITHUB_TOKEN: process.env.GITHUB_TOKEN,
NODE_ENV: process.env.NODE_ENV || 'production',
LOG_LEVEL: process.env.LOG_LEVEL,
GITHUB_RATE_LIMIT_PER_HOUR: process.env.GITHUB_RATE_LIMIT_PER_HOUR,
GITHUB_RATE_LIMIT_BURST: process.env.GITHUB_RATE_LIMIT_BURST,
GITHUB_REQUEST_TIMEOUT: process.env.GITHUB_REQUEST_TIMEOUT,
SCAN_TIMEOUT: process.env.SCAN_TIMEOUT,
MAX_RETRIES: process.env.MAX_RETRIES,
RETRY_DELAY_BASE: process.env.RETRY_DELAY_BASE,
RETRY_DELAY_MAX: process.env.RETRY_DELAY_MAX,
MAX_FILE_SIZE: process.env.MAX_FILE_SIZE,
MAX_FILES_PER_SCAN: process.env.MAX_FILES_PER_SCAN,
CIRCUIT_BREAKER_THRESHOLD: process.env.CIRCUIT_BREAKER_THRESHOLD,
CIRCUIT_BREAKER_TIMEOUT: process.env.CIRCUIT_BREAKER_TIMEOUT,
};
return ConfigSchema.parse(rawConfig);
} catch (error) {
if (error instanceof z.ZodError) {
throw new Error(`Configuration validation failed: ${error.errors.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
}
throw error;
}
}
export const config = loadConfig();
