/**
 * Logging configuration using envalid
 * Application logging settings without Loki (Loki config is in monitoring.ts)
 */
import { cleanEnv, str, bool, num } from 'envalid';

/**
 * Logging configuration with validation and defaults
 */
export const loggingConfig = cleanEnv(process.env, {
  // Basic Logging Settings
  LOG_LEVEL: str({ 
    default: 'info', 
    choices: ['error', 'warn', 'info', 'http', 'verbose', 'debug', 'silly'],
    desc: 'Logging level' 
  }),
  LOG_FORMAT: str({ 
    default: 'json', 
    choices: ['json', 'simple', 'combined'],
    desc: 'Log output format' 
  }),
  LOG_CONSOLE: bool({ default: true, desc: 'Enable console logging' }),
  LOG_FILE: bool({ default: false, desc: 'Enable file logging' }),
  
  // File Logging Settings
  LOG_FILE_PATH: str({ default: 'logs', desc: 'Log file directory path' }),
  LOG_FILE_MAX_SIZE: str({ default: '20m', desc: 'Maximum log file size' }),
  LOG_FILE_MAX_FILES: num({ default: 14, desc: 'Maximum number of log files to keep' }),
  LOG_FILE_DATE_PATTERN: str({ default: 'YYYY-MM-DD', desc: 'Log file date pattern' }),
  
  // Error Logging
  LOG_ERROR_FILE: bool({ default: true, desc: 'Enable separate error log file' }),
  LOG_ERROR_STACK: bool({ default: true, desc: 'Include stack traces in error logs' }),
  
  // Performance Logging
  LOG_PERFORMANCE: bool({ default: false, desc: 'Enable performance logging' }),
  LOG_SQL_QUERIES: bool({ default: false, desc: 'Log SQL queries' }),
  LOG_HTTP_REQUESTS: bool({ default: true, desc: 'Log HTTP requests' }),
  
  // Structured Logging
  LOG_STRUCTURED: bool({ default: true, desc: 'Use structured logging format' }),
  LOG_TIMESTAMP: bool({ default: true, desc: 'Include timestamps in logs' }),
  LOG_CALLER_INFO: bool({ default: false, desc: 'Include caller information in logs' }),
  
  // Log Filtering
  LOG_SILENT_MODULES: str({ default: '', desc: 'Comma-separated list of modules to silence' }),
  LOG_VERBOSE_MODULES: str({ default: '', desc: 'Comma-separated list of modules for verbose logging' }),
  
  // Application Context
  LOG_SERVICE_NAME: str({ default: 'stock-bot', desc: 'Service name for log context' }),
  LOG_SERVICE_VERSION: str({ default: '1.0.0', desc: 'Service version for log context' }),
  LOG_ENVIRONMENT: str({ default: 'development', desc: 'Environment for log context' }),
});

// Export typed configuration object
export type LoggingConfig = typeof loggingConfig;

// Export individual config values for convenience
export const {
  LOG_LEVEL,
  LOG_FORMAT,
  LOG_CONSOLE,
  LOG_FILE,
  LOG_FILE_PATH,
  LOG_FILE_MAX_SIZE,
  LOG_FILE_MAX_FILES,
  LOG_FILE_DATE_PATTERN,
  LOG_ERROR_FILE,
  LOG_ERROR_STACK,
  LOG_PERFORMANCE,
  LOG_SQL_QUERIES,
  LOG_HTTP_REQUESTS,
  LOG_STRUCTURED,
  LOG_TIMESTAMP,
  LOG_CALLER_INFO,
  LOG_SILENT_MODULES,
  LOG_VERBOSE_MODULES,
  LOG_SERVICE_NAME,
  LOG_SERVICE_VERSION,
  LOG_ENVIRONMENT,
} = loggingConfig;