export interface ErrorPattern {
  pattern: RegExp;
  replacement: string;
}

// Centralised list of common error patterns.
// Add new patterns here without touching component files.
export const errorPatterns: ErrorPattern[] = [
  // Generic missing API key (covers OpenAI, Anthropic, etc.)
  {
    pattern: /Missing .* API Key/i,
    replacement: 'Missing API Key',
  },
  // Network / connectivity issues
  {
    pattern: /Connection timeout/i,
    replacement: 'Connection timeout',
  },
  {
    pattern: /Network.*not.*ok/i,
    replacement: 'Network connection failed',
  },
  // HTTP status based errors
  {
    pattern: /403.*Forbidden/i,
    replacement: 'Access forbidden - check API key permissions',
  },
  {
    pattern: /401.*Unauthorized/i,
    replacement: 'Unauthorized - invalid API key',
  },
  {
    pattern: /429.*rate limit/i,
    replacement: 'Rate limit exceeded',
  },
  {
    pattern: /500.*Internal Server Error/i,
    replacement: 'Provider internal server error',
  },
  // LiteLLM specific wrapped errors
  {
    pattern: /litellm\.AuthenticationError/i,
    replacement: 'Authentication failed',
  },
  {
    pattern: /litellm\.RateLimitError/i,
    replacement: 'Rate limit exceeded',
  },
  {
    pattern: /litellm\.APIError/i,
    replacement: 'API error',
  },
];