V2PH Album Downloader

Album Downloader for v2ph.com. After logging in and opening the album page, click the "Download all images" option in the script menu to start downloading.

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name        V2PH Album Downloader
// @namespace   https://greasyfork.org/zh-CN/users/220174-linepro
// @match       https://www.v2ph.com/album/*
// @grant       GM_download
// @grant       GM_xmlhttpRequest
// @grant       GM_registerMenuCommand
// @grant       GM_unregisterMenuCommand
// @grant       GM_addStyle
// @version     1.2
// @author      LinePro
// @license     MIT
// @description Album Downloader for v2ph.com. After logging in and opening the album page, click the "Download all images" option in the script menu to start downloading.
// @run-at document-idle
// @require https://update.greasyfork.org/scripts/473358/1237031/JSZip.js
// @require https://cdn.jsdelivr.net/npm/idb-keyval@6/dist/umd.js
// ==/UserScript==
(async () => {
    const jQuery = unsafeWindow.jQuery;
    GM_addStyle(`
        .spinner-border {
            display: inline-block;
            width: 1.25rem;
            height: 1.25rem;
            vertical-align: -.125em;
            border: .175em solid currentColor;
            border-right-color: transparent;
            border-radius: 50%;
            -webkit-animation: .75s linear infinite spinner-border;
            animation: .75s linear infinite spinner-border
        }
        
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0
        }

        .modal-loading {
            margin-left: 0.5rem;
        }
    `);
    class BootStrap4Model {
        constructor(title = 'Modal', text = '') {
            const wrap = (() => {
                const modal = document.createElement('div');
                modal.className = 'modal';
                modal.setAttribute('tabindex', '-1');
                modal.dataset.backdrop = 'static';
                modal.dataset.keyboard = 'false';
                const modalDialog = document.createElement('div')
                modalDialog.className = 'modal-dialog';
                const modalContent = document.createElement('div')
                modalContent.className = 'modal-content';
                const modalHeader = document.createElement('div');
                modalHeader.className = 'modal-header';
                const modalTitle = document.createElement('h5');
                this.modalTitle = modalTitle;
                modalTitle.className = 'modal-title';
                modalTitle.innerText = title;
                const modalLoading = document.createElement('div');
                this.modalLoading = modalLoading;
                modalLoading.className = 'modal-loading spinner-border';
                modalLoading.style.display = 'none';
                modalLoading.setAttribute('role', 'status');
                const modalLoadingSpan = document.createElement('span');
                modalLoadingSpan.className = 'sr-only';
                modalLoadingSpan.innerText = 'Loading...';
                modalLoading.appendChild(modalLoadingSpan);
                modalTitle.appendChild(modalLoading);
                modalHeader.appendChild(modalTitle);
                const modalBody = document.createElement('div');
                this.modalBody = modalBody;
                modalBody.className = 'modal-body';
                modalBody.innerText = text;
                const modalFooter = document.createElement('div');
                modalFooter.className = 'modal-footer';
                const closeBtn = document.createElement('button');
                this.closeBtn = closeBtn;
                closeBtn.className = 'btn btn-danger';
                closeBtn.setAttribute('data-dismiss', 'modal');
                closeBtn.innerText = 'Close';
                modalFooter.appendChild(closeBtn);
                modalContent.appendChild(modalHeader);
                modalContent.appendChild(modalBody);
                modalContent.appendChild(modalFooter);
                modalDialog.appendChild(modalContent);
                modal.appendChild(modalDialog);
                return modal;
            })();
            document.body.appendChild(wrap);
            this.wrap = wrap;
        }

        show() {
            jQuery(this.wrap).modal('show');
        }

        hide() {
            jQuery(this.wrap).modal('hide');
        }

        setTitle(title) {
            this.modalTitle.innerText = title;
        }

        setText(text) {
            this.modalBody.innerText = text;
        }

        setLoading(loading) {
            this.modalLoading.style.display = loading ? '' : 'none';
        }

        setCloseBtn(text, callback) {
            this.closeBtn.innerText = text;
            this.closeBtn.onclick = callback;
        }
    }

    const getPageFromUrl = (url) => {
        const search = new URL(url).searchParams;
        const page = search.get("page");
        if (page) {
            return parseInt(page);
        }
        return 1;
    }

    const fetch = (url) => {
        return new Promise((resolve, reject) => {
            GM_xmlhttpRequest({
                method: "GET",
                url: url,
                headers: {
                    Referer: location.href
                },
                responseType: 'blob',
                onload: response => resolve(response.response),
                onerror: error => reject(error)
            });
        });
    }

    const downloadingStatus = await idbKeyval.get("downloadingStatus");

    const downloadingAlbumId = downloadingStatus?.albumId;
    const downloadingPage = downloadingStatus?.page;

    const currentAlbumId = location.pathname.split("/").pop();

    const page = getPageFromUrl(location.href);

    const registerMenu = () => {
        const caption = 'Download all images';
        GM_registerMenuCommand(caption, async () => {
            GM_unregisterMenuCommand(caption);
            if (page !== 1) {
                await idbKeyval.set("downloadingStatus", {
                    albumId: currentAlbumId,
                    page: 1
                });
                location.search = '';
            } else {
                await startDownload();
            }
        });
    };

    const startDownload = async () => {
        let cancelled = false;
        const modal = new BootStrap4Model('Downloading');
        modal.show();
        modal.setCloseBtn('Cancel', async () => {
            cancelled = true;
            await idbKeyval.clear();
            registerMenu();
        });

        const values = [];
        let index = 1;
        const imgList = document.querySelectorAll("img.album-photo");
        for (const element of imgList) {
            const url = element.dataset.src;
            const fileName = url.split("/").pop();
            modal.setText(`Downloading ${page}-${index}-${fileName}...`);
            modal.setLoading(true);

            const blob = await fetch(url);
            values.push({
                name: `${page}-${index++}-${fileName}`,
                blob
            });
            await new Promise(resolve => setTimeout(resolve, 500));
            if (cancelled) {
                return;
            }
        }
        await idbKeyval.set(`page-${page}`, values);
        
        const lastPageUrl = document.querySelector(".page-item:last-of-type a")?.href;
        if (page === getPageFromUrl(lastPageUrl)) {
            const zip = new JSZip();
            const values = (await idbKeyval.values()).flat().slice(1);
            for (const { name, blob } of values) {
                zip.file(name, blob);
            }
            const zipBlob = await zip.generateAsync({ type: "blob" })
            const url = URL.createObjectURL(zipBlob);
            const title = document.querySelector(".h5.text-center.mb-3").textContent || 'album';
            GM_download(url, `${title}.zip`);
            await idbKeyval.clear();
            modal.setTitle('Downloaded Complete');
            modal.setText(`${values.length} images downloaded.`);
            modal.setLoading(false);
            modal.setCloseBtn('Close', () => modal.hide());
        } else {
            const nextPage = page + 1;
            await idbKeyval.set("downloadingStatus", {
                albumId: currentAlbumId,
                page: nextPage
            });
            location.search = `?page=${nextPage}`;
        }
    };

    if (downloadingAlbumId === currentAlbumId && downloadingPage === page) {
        await startDownload();
    } else {
        await idbKeyval.clear();
        registerMenu();
    }
})();