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

export const isArray = (v: unknown): boolean => Array.isArray(v)

export const formatArray = (
  unknownValue: unknown,
  llml: (data: unknown, formatters: Formatters) => string,
  formatters: Formatters,
): string => {
  const value = unknownValue as unknown[]

  if (value.length === 0) return ""

  const results: string[] = []
  for (let i = 0; i < value.length; i++) {
    const item = value[i]
    const itemTag = String(i + 1)

    if (i > 0) results.push("\n")

    if (typeof item === "object" && item !== null && !Array.isArray(item)) {
      const formatted = llml(item, formatters)
      if (formatted.includes("\n")) {
        results.push(`<${itemTag}>\n${formatted}\n</${itemTag}>`)
      } else {
        results.push(`<${itemTag}>${formatted}</${itemTag}>`)
      }
    } else {
      const formatted = llml(item, formatters)
      results.push(`<${itemTag}>${formatted}</${itemTag}>`)
    }
  }

  return results.join("")
}