// Name: Unescape Clipboard String
// Description: Convert JSON-style escaped text on the clipboard into proper HTML and copy it back.
// Author: tayiorbeii
// GitHub: tayiorbeii

import "@johnlindquist/kit"

const input = await clipboard.readText()

if (!input || !input.trim()) {
  await notify({ title: "Unescape Clipboard", body: "Clipboard is empty or not text." })
  exit()
}

const tryJsonParse = (s: string): string | null => {
  try {
    const v = JSON.parse(s)
    return typeof v === "string" ? v : null
  } catch {
    return null
  }
}

const unescapeFromLiteral = (s: string): string => {
  // Build a safe JSON string literal without altering backslashes that form escapes
  const safe = s.replace(/"/g, '\\"').replace(/\n/g, "\\n").replace(/\r/g, "\\r")
  try {
    return JSON.parse(`"${safe}"`)
  } catch {
    return s
  }
}

const manualUnescape = (s: string): string => {
  return s
    .replace(/\\r\\n/g, "\r\n")
    .replace(/\\n/g, "\n")
    .replace(/\\t/g, "\t")
    .replace(/\\r/g, "\r")
    .replace(/\\f/g, "\f")
    .replace(/\\b/g, "\b")
    .replace(/\\"/g, '"')
    .replace(/\\'/g, "'")
    .replace(/\\u([0-9a-fA-F]{4})/g, (_, hex) => String.fromCharCode(parseInt(hex, 16)))
    .replace(/\\\\/g, "\\")
}

let output = tryJsonParse(input)
if (output === null) output = unescapeFromLiteral(input)
if (output === input) output = manualUnescape(input)

await clipboard.writeText(output)
await toast("Unescaped HTML copied to clipboard")