frontend/src/utils/formatters.ts

// Format confidence as percentage
export const formatConfidence = (confidence: number): string => {
  return `${(confidence * 100).toFixed(1)}%`;
};

// Format processing time
export const formatProcessingTime = (ms: number): string => {
  if (ms < 1000) {
    return `${ms}ms`;
  }
  return `${(ms / 1000).toFixed(2)}s`;
};

// Format relative time (e.g., "2 mins ago")
export const formatRelativeTime = (dateString: string): string => {
  const date = new Date(dateString);
  const now = new Date();
  const diffInSeconds = Math.floor((now.getTime() - date.getTime()) / 1000);

  if (diffInSeconds < 60) {
    return 'just now';
  }

  const diffInMinutes = Math.floor(diffInSeconds / 60);
  if (diffInMinutes < 60) {
    return `${diffInMinutes} min${diffInMinutes > 1 ? 's' : ''} ago`;
  }

  const diffInHours = Math.floor(diffInMinutes / 60);
  if (diffInHours < 24) {
    return `${diffInHours} hour${diffInHours > 1 ? 's' : ''} ago`;
  }

  const diffInDays = Math.floor(diffInHours / 24);
  if (diffInDays < 7) {
    return `${diffInDays} day${diffInDays > 1 ? 's' : ''} ago`;
  }

  return date.toLocaleDateString();
};

// Truncate text with ellipsis
export const truncateText = (text: string, maxLength: number): string => {
  if (text.length <= maxLength) {
    return text;
  }
  return `${text.substring(0, maxLength)}...`;
};

// Format memory size
export const formatMemory = (mb: number): string => {
  if (mb < 1) {
    return `${(mb * 1024).toFixed(0)} KB`;
  }
  return `${mb.toFixed(2)} MB`;
};

// Get confidence level label
export const getConfidenceLevel = (confidence: number): string => {
  if (confidence >= 0.9) return 'High confidence';
  if (confidence >= 0.7) return 'Medium confidence';
  return 'Low confidence';
};