import { vibeXML } from "./formatters"
import type { Formatters } from "./types"

/**
 * Core LLML function - simple formatter-based API
 */
export const llml = (data: unknown, formatters?: Formatters): string => {
  // Handle no arguments or undefined data
  if (data === undefined) {
    return ""
  }

  // Use default VibeXML formatters if none provided
  const activeFormatters = formatters || vibeXML()

  // Iterate through formatters in insertion order
  for (const [predicate, formatFunction] of activeFormatters) {
    if (predicate(data)) {
      return formatFunction(data, llml, activeFormatters)
    }
  }

  // No formatter found - fallback to string conversion
  return String(data)
}