Downloads all images individually in a frenschan thread with original filenames (by default).
// ==UserScript==
// @name Frenschan Thread Image Downloader
// @namespace Violentmonkey Scripts
// @match https://*.frenschan.com/*/res/*.html
// @match https://*.frenschan.org/*/res/*.html
// @grant GM_download
// @grant GM_registerMenuCommand
// @version 1.2.1
// @license The Unlicense
// @author ImpatientImport
// @description Downloads all images individually in a frenschan thread with original filenames (by default).
// ==/UserScript==
/* EDIT BELOW THIS LINE */
// User preferences
var download_limit = 3000; // speed in milliseconds to delay
/* EDIT ABOVE THIS LINE */
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
(function() {
'use strict';
// Constants for later reference
const top_of_thread = document.getElementsByClassName("intro")[0];
const thread_URL = document.URL;
const tinyboard_site = thread_URL.toString().split('/')[2];
const url_path = new URL(thread_URL).pathname;
const url_path_split = url_path.toString().split('/')
const thread_board = url_path_split[1];
const thread_num = url_path_split[3].split(".")[0];
const json_url = "https://"+ tinyboard_site + "/"+ thread_board +"/res/"+ thread_num + ".json"; // important
var media_arr=[], media_fnames=[];
// Gets the JSON file for the Tinyboard thread
async function get_archive_thread() {
const site_response = await fetch(json_url);
const JSON_file = await site_response.json();
console.log(JSON_file); // debug
retrieve_media(JSON_file);
download_images();
}
// Retrieves media from the thread (in JSON format)
function retrieve_media(thread_obj) {
const posts_exist = thread_obj.posts != undefined;
if (posts_exist) {
const thread_posts = thread_obj.posts;
//const post_nums = Object.keys(thread_posts);
const posts_length = thread_posts.length;
for (let i = 0; i < posts_length; i++) {
if(thread_posts[i].tim != null && thread_posts[i].ext != "deleted"){
media_arr.push("https://" + tinyboard_site + "/" + thread_board + "/src/" + thread_posts[i].tim + thread_posts[i].ext );
media_fnames.push(thread_posts[i].filename + thread_posts[i].ext);
//in case of more than one image in post
var extra = thread_posts[i].extra_files
if(extra != null){
for (let j=0; j < extra.length; j++){
media_arr.push("https://" + tinyboard_site + "/" + thread_board + "/src/" + extra[j].tim + extra[j].ext );
media_fnames.push(extra[j].filename + extra[j].ext);
}
}
}
}
}
}
async function download_images(){
for (var i=0; i<media_arr.length; i++){
await sleep(download_limit);
console.log(media_arr[i]);
GM_download(media_arr[i], media_fnames[i]) // downloads images
}
}
GM_registerMenuCommand("Download all thread images individually", get_archive_thread);
var indiv_dl_btn;
var indiv_dlbtn_elem;
indiv_dl_btn = document.createElement('a');
indiv_dl_btn.id = "indiv_btn";
indiv_dl_btn.innerText = "[Download Images]";
top_of_thread.append(indiv_dl_btn);
indiv_dlbtn_elem = document.getElementById("indiv_btn");
indiv_dl_btn.addEventListener("click", get_archive_thread);
})();