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Fantia downloader

Download your Fantia rewards more easily!

Per 18-03-2021. Zie de nieuwste versie.

/* jshint esversion: 9 */
// ==UserScript==
// @name         Fantia downloader
// @namespace    http://tampermonkey.net/
// @version      1.2
// @description  Download your Fantia rewards more easily! 
// @author       suzumiyahifumi
// @match        https://fantia.jp/posts/*
// @icon         https://www.google.com/s2/favicons?domain=fantia.jp
// @require      https://code.jquery.com/jquery-3.4.1.min.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/jszip/3.2.0/jszip.min.js
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    $('head').append(`<style type="text/css">
    .fa-download2::before{
        content: "\\f021"
    }
    .hdr{ pointer-events: none; }
    </style>`);

    $('nav.scroll-tabs>div').append(`<a id="set" class="tab-item tab-item-text" style="cursor: pointer;" onclick="JAVASCRIPT:getDownLoadButton()">擷取下載</a>`);

    window.getDownLoadButton = () => {
        $('div.btn-group-tabs').each((i, div) => {
            $(div).append(`<button class="btn btn-default btn-md" onclick="getImg(event)"><i class="fa fa-download fa-2x" style="color: #fe7070 !important;"></i> <span class="btn-text-sub" style="color: #fe7070 !important;">全圖片下載</span></button>`);
            $('#set').remove();
        });
    };

    var init = setInterval(() => {
        if ($('nav.post-next-prev-buttons').length != 0) {
            if ($('div.btn-group-tabs').length != 0) {
                window.getDownLoadButton();
                clearInterval(init);
            } else {
                $('#set').remove();
                clearInterval(init);
            }
        }
    }, 500);

    window.getImg = (event) => {
        let srcArr = [];
        let dataCont = 0;
        var downloadB = ($(event.target).is("button")) ? $(event.target) : $(event.target).closest("button");
        downloadB.addClass(['active', 'hdr']);
        downloadB.find('i').removeClass('fa-download').addClass('fa-download2');
        downloadB.find('span').text(`擷取連結中`);
        $($(event.target).closest('div.content-block').find('div.image-thumbnails')[0]).find('img').each((i, img) => {
            let src = $(img).attr('src');
            let id = /file\/\d+\//g.exec(src);
            if (id[0] != null) {
                srcArr.push(`https://fantia.jp/posts/SRC/post_content_photo/SRC`.replaceAll(`SRC`, /\d+/.exec(id)[0]));
            }
        });
        downloadB.find('span').text(`${dataCont} / ${srcArr.length}`);

        var zip = new JSZip();
        srcArr.digits = window.getDigits(Number(srcArr.length));
        srcArr.forEach((url, i) => {
            $.get(url, function (data) {
                let div = document.createElement("div");
                $(div).html(data);
                $(div).find('img').attr("id", `${i}_img`);
                let imgSRC = $(div).find('img').attr("src");
                $(div).remove();
                loadAsArrayBuffer(imgSRC, function (imgData) {
                    dataCont += 1;
                    downloadB.find('span').text(`${dataCont} / ${srcArr.length}`);
                    zip.file(`${i.toString().padStart(srcArr.digits, 0)}.jpg`, imgData);
                    if (dataCont == srcArr.length) {
                        downloadB.find('span').text(`壓縮檔案中`);
                        zip.generateAsync({
                            type: "blob"
                        }).then(function (content) {
                            downloadB.find('i').removeClass('fa-download2').addClass('fa-download');
                            downloadB.removeClass(['active', 'hdr']);
                            downloadB.find('span').text(`下載已完成`);
                            let tag = document.createElement('a');
                            tag.href = (URL || webkitURL).createObjectURL(content);
                            tag.download = `${$("h1.post-title").text()}_${downloadB.closest("div.post-content-inner").find('h2').text()}`;
                            document.body.appendChild(tag);
                            tag.click();
                            document.body.removeChild(tag);
                        });
                    }
                });
            });

        });
        return;
    };

    window.getDigits = (i) => {
        let L = 0;
        while (i >= 1) {
            i = i / 10;
            L += 1;
        }
        return `${L}`;
    };

    window.loadAsArrayBuffer = (url, callback) => {
        let xhr = new XMLHttpRequest();
        xhr.open("GET", url);
        xhr.responseType = "arraybuffer";
        xhr.onerror = function (error) {
            console.log(`error`)
        };
        xhr.onload = function () {
            if (xhr.status === 200) {
                callback(xhr.response, url)
            } else {
                console.log(`error`)
            }
        };
        xhr.send();
    };
})();