Base64 자동 디코더

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// ==UserScript==

// @name         Base64 AutoDecoder

// @namespace    http://tampermonkey.net/

// @version      1.0

// @description  디코딩 가능한 base64 문자열을 링크로 변환합니다.

// @author       Zeliper

// @match        https://kone.gg/s/imya/*

// @include      https://kone.gg/

// @grant        unsafeWindow

// ==/UserScript==

unsafeWindow.on = true ;

( function () {

'use strict' ;

// Base64 문자열을 URL로 디코딩하는 함수

function  decodeBase64ToURL(str) {

try  {

const  decoded =  atob(str); // Base64 디코딩

// URL이 http 또는 https로 시작하는지 확인

if  ( / ^https?:\ / \ //.test(decoded)) {

return  decoded; // 유효한 URL이면 반환

            }

        } catch  (e) {

return null ; // 디코딩 오류가 나면 null 반환

        }

return null ;

    }

// 텍스트에서 Base64 문자열을 찾아 링크로 변환하는 함수

function  replaceBase64WithLink(node) {

console .log( "Node : " , node);

const  base64Regex = / \b[a - zA - Z0 - 9 + / = ]{ 20 ,}\b / g; // Base64 문자열을 찾는 정규식

let  text =  node.textContent; // 텍스트 노드의 텍스트 내용

let  match;

const parent =  node.parentNode;

let  lastIndex = 0 ;

// 텍스트에서 Base64 문자열을 찾아서 처리

while  ((match =  base64Regex.exec(text)) ! = = null ) {

const  before =  text.slice(lastIndex, match.index);

const  base64Str =  match[ 0 ];

const  decodedURL =  decodeBase64ToURL(base64Str);

if  (decodedURL) {

console .log(decodedURL);

// 유효한 URL이 디코딩되었으면 링크로 변환

const  a = document .createElement( 'a' );

                a.href =  decodedURL;

                a.textContent =  decodedURL;

                a.target = '_blank' ;

//node.textContent = ''; // <-- 나중에 문제 없으면 이거 넣어서 해도 될듯

                node.appendChild( document .createElement( 'br' ));

                node.appendChild(a);

            } else {

console .log( "Failed" );

            }

            lastIndex =  base64Regex.lastIndex;

        }

    }

// .prose-container의 Shadow DOM을 탐색하여 텍스트 변환

function  walkShadowRoot(shadowRoot) {

const  textNodes =  shadowRoot.querySelectorAll( ':not(div)' );

// 모든 텍스트 노드를 확인

        textNodes.forEach(node = >  {

            replaceBase64WithLink(node);

        });

    }

// .prose-container가 로드된 후 Shadow DOM 탐색

function  processShadowRoot() {

const  container = document .body.querySelector( '.prose-container' );

if  (container & &  container.shadowRoot) {

            walkShadowRoot(container.shadowRoot); // Shadow DOM 처리

        }

    }

// 페이지가 완전히 로드된 후 실행

function  onLoad() {

        processShadowRoot();

    }

// MutationObserver를 사용하여 .prose-container의 Shadow DOM 로드를 감지

const  observer = new  MutationObserver(() = >  {

const  container = document .body.querySelector( '.prose-container' );

if  (container & &  container.shadowRoot) {

            processShadowRoot();

        }

    });

// .prose-container가 추가될 때까지 대기

    observer.observe( document .body, { childList: true , subtree: true  });

// 페이지 로딩이 완료되면 바로 실행

if  ( document .readyState = = = 'complete' ) {

        onLoad();

    }

})();