// ==UserScript==
// @name         Bilibili 哔哩哔哩查看原图
// @icon         https://t.bilibili.com/favicon.ico
// @namespace    https://lolico.moe/
// @version      2.3.3
// @description  方便在B站内查看各种图片的原图，支持动态、专栏
// @author       Jindai Kirin
// @match        https://t.bilibili.com/*
// @match        https://space.bilibili.com/*
// @match        https://www.bilibili.com/read/*
// @license      GPL-3.0
// @grant        GM_addStyle
// @run-at       document-end
// @require      https://code.bdstatic.com/npm/jquery@3.6.0/dist/jquery.min.js
// @downloadURL none
// ==/UserScript==

(function () {
    'use strict';

    if (location.hostname === 't.bilibili.com') {
        // 添加查看原图按钮
        document.addEventListener(
            'click',
            async ({ target }) => {
                const $target = $(target);
                if (!$target.hasClass('bili-album__preview__picture__img')) return;
                const $imagesbox = $target.parents('.bili-album');
                if ($imagesbox.find('.bili-album__watch__control__option.raw-image').length) return;
                const $btn = $imagesbox.find('.bili-album__watch__control__option.full-screen');
                const $newBtn = $($btn.prop('outerHTML').replace('大', '原'));
                $newBtn.addClass('raw-image');
                $newBtn.on('click', () => {
                    window.open($imagesbox.find('.bili-album__watch__content img').attr('src').replace(/@.*?$/, ''), '_blank');
                });
                $btn.after($newBtn);
            },
            { capture: true }
        );
    }
    if (location.hostname === 't.bilibili.com' || location.hostname === 'space.bilibili.com') {
        // 添加查看原图按钮
        document.addEventListener('click', async ({ target }) => {
            if (!$(target).hasClass('img-content')) return;
            const $imagesbox = $('.imagesbox:hover');
            const $btn = await waitViewBtn($imagesbox);
            const $newBtn = $($btn.prop('outerHTML').replace('大', '原'));
            $newBtn.on('click', () => {
                window.open($imagesbox.find('.boost-img img').attr('src').replace(/@.*?$/, ''), '_blank');
            });
            $btn.after($newBtn);
            const removeBtn = () => $newBtn.remove();
            $imagesbox.find('.bp-v-middle:contains(收起)').one('click', removeBtn);
            $imagesbox.find('.boost-img').one('click', removeBtn);
        });
    } else if (location.href.startsWith('https://www.bilibili.com/read/')) {
        GM_addStyle('img.normal-img,.card-image__image{cursor:pointer}');
        // 专栏图片点击打开原图
        $('img.normal-img').each(function () {
            const $img = $(this);
            $img.on('click', () => {
                window.open($img.attr('src').replace(/@.*?$/, ''));
            });
            $img.attr('title', '点击打开原图');
        });
        // 专栏头图点击打开原图
        $('.card-image__image').each(function () {
            const $div = $(this);
            $div.on('click', () => {
                window.open(
                    $div
                        .css('background-image')
                        .replace(/^url\(["']?/, '')
                        .replace(/["']?\)$/, '')
                        .replace(/@.*?$/, ''),
                    '_blank'
                );
            });
            $div.attr('title', '点击打开原图');
        });
    }

    /**
     * 等待查看大图按钮出现
     * @param {JQuery<HTMLElement>} $imagesbox
     * @returns {JQuery<HTMLElement>}
     */
    function waitViewBtn($imagesbox) {
        return new Promise(resolve => {
            const $btn = $imagesbox.find('.bp-v-middle:contains(查看大图)');
            if ($btn.length > 0) {
                resolve($btn);
                return;
            }
            new MutationObserver((mutations, self) => {
                mutations.forEach(({ addedNodes }) => {
                    if (addedNodes.length > 0 && addedNodes[0].className === 'boost-wrap') {
                        self.disconnect();
                        resolve($imagesbox.find('.bp-v-middle:contains(查看大图)'));
                    }
                });
            }).observe($imagesbox[0], { childList: true });
        });
    }
})();