/**
 * Dragonfly (Redis replacement) configuration using envalid
 * High-performance caching and event streaming
 */
import { cleanEnv, str, port, bool, num } from 'envalid';

/**
 * Dragonfly configuration with validation and defaults
 */
export const dragonflyConfig = cleanEnv(process.env, {
  // Dragonfly Connection
  DRAGONFLY_HOST: str({ default: 'localhost', desc: 'Dragonfly host' }),
  DRAGONFLY_PORT: port({ default: 6379, desc: 'Dragonfly port' }),
  DRAGONFLY_PASSWORD: str({ default: '', desc: 'Dragonfly password (if auth enabled)' }),
  DRAGONFLY_USERNAME: str({ default: '', desc: 'Dragonfly username (if ACL enabled)' }),
  
  // Database Selection
  DRAGONFLY_DATABASE: num({ default: 0, desc: 'Dragonfly database number (0-15)' }),
  
  // Connection Pool Settings
  DRAGONFLY_MAX_RETRIES: num({ default: 3, desc: 'Maximum retry attempts' }),
  DRAGONFLY_RETRY_DELAY: num({ default: 50, desc: 'Retry delay in ms' }),
  DRAGONFLY_CONNECT_TIMEOUT: num({ default: 10000, desc: 'Connection timeout in ms' }),
  DRAGONFLY_COMMAND_TIMEOUT: num({ default: 5000, desc: 'Command timeout in ms' }),
  
  // Pool Configuration
  DRAGONFLY_POOL_SIZE: num({ default: 10, desc: 'Connection pool size' }),
  DRAGONFLY_POOL_MIN: num({ default: 1, desc: 'Minimum pool connections' }),
  DRAGONFLY_POOL_MAX: num({ default: 20, desc: 'Maximum pool connections' }),
  
  // TLS Settings
  DRAGONFLY_TLS: bool({ default: false, desc: 'Enable TLS for Dragonfly connection' }),
  DRAGONFLY_TLS_CERT_FILE: str({ default: '', desc: 'Path to TLS certificate file' }),
  DRAGONFLY_TLS_KEY_FILE: str({ default: '', desc: 'Path to TLS key file' }),
  DRAGONFLY_TLS_CA_FILE: str({ default: '', desc: 'Path to TLS CA certificate file' }),
  DRAGONFLY_TLS_SKIP_VERIFY: bool({ default: false, desc: 'Skip TLS certificate verification' }),
  
  // Performance Settings
  DRAGONFLY_ENABLE_KEEPALIVE: bool({ default: true, desc: 'Enable TCP keepalive' }),
  DRAGONFLY_KEEPALIVE_INTERVAL: num({ default: 60, desc: 'Keepalive interval in seconds' }),
  
  // Clustering (if using cluster mode)
  DRAGONFLY_CLUSTER_MODE: bool({ default: false, desc: 'Enable cluster mode' }),
  DRAGONFLY_CLUSTER_NODES: str({ default: '', desc: 'Comma-separated list of cluster nodes (host:port)' }),
  
  // Memory and Cache Settings
  DRAGONFLY_MAX_MEMORY: str({ default: '2gb', desc: 'Maximum memory usage' }),
  DRAGONFLY_CACHE_MODE: bool({ default: true, desc: 'Enable cache mode' }),
});

// Export typed configuration object
export type DragonflyConfig = typeof dragonflyConfig;

// Export individual config values for convenience
export const {
  DRAGONFLY_HOST,
  DRAGONFLY_PORT,
  DRAGONFLY_PASSWORD,
  DRAGONFLY_USERNAME,
  DRAGONFLY_DATABASE,
  DRAGONFLY_MAX_RETRIES,
  DRAGONFLY_RETRY_DELAY,
  DRAGONFLY_CONNECT_TIMEOUT,
  DRAGONFLY_COMMAND_TIMEOUT,
  DRAGONFLY_POOL_SIZE,
  DRAGONFLY_POOL_MIN,
  DRAGONFLY_POOL_MAX,
  DRAGONFLY_TLS,
  DRAGONFLY_TLS_CERT_FILE,
  DRAGONFLY_TLS_KEY_FILE,
  DRAGONFLY_TLS_CA_FILE,
  DRAGONFLY_TLS_SKIP_VERIFY,
  DRAGONFLY_ENABLE_KEEPALIVE,
  DRAGONFLY_KEEPALIVE_INTERVAL,
  DRAGONFLY_CLUSTER_MODE,
  DRAGONFLY_CLUSTER_NODES,
  DRAGONFLY_MAX_MEMORY,
  DRAGONFLY_CACHE_MODE,
} = dragonflyConfig;