已被 bilibili 制裁并无法修复，仅供技术学习，后续不会更新

bilibili_share.user.js

// ==UserScript==
// @name         Bilibili share
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Bilibili share
// @author       You
// @match        *://www.bilibili.com/bangumi/play/*
// @match        *://www.bilibili.com/video/*
// @connect      api.bilibili.com
// @icon         https://www.bilibili.com/favicon.ico
// @grant        GM_xmlhttpRequest
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_registerMenuCommand
// @run-at       document-start
// ==/UserScript==


// 尽早将 __playinfo__ 覆盖, 使 B 站重新请求 playurl API, 不要使用随 HTML 返回的内容
Object.defineProperty(unsafeWindow, '__playinfo__', {
    get: () => undefined
});

Object.defineProperty(unsafeWindow, 'playurlSSRData', {
    get: () => undefined
});

let dataProxy = undefined

Object.defineProperty(unsafeWindow, '__NEXT_DATA__', {
    get: () => dataProxy,
    set: (d) => {
        dataProxy = d
        if (dataProxy.props?.pageProps?.dehydratedState?.queries) {
            dataProxy.props.pageProps.dehydratedState.queries = []
            console.log("queries in __NEXT_DATA__ removed")
        }
        console.log(d)
    }
});


(function() {
    'use strict'
    // 虽然未观察到相关的风控行为, 但推荐同时安装 Adblock 类插件屏蔽跟踪器
    const vip_cookie = GM_getValue("vip_cookie")
    console.log("Use Cookie: " + vip_cookie)

    const promptCookieInput = () => {
        const cookie = prompt("请输入一个大会员账号的 Cookie\n(只需要 SESSDATA 部分, 直接复制全部 Cookie 也行)\n" +
                              "该 Cookie 只会用于解析视频的播放地址\n目前已经支持普通视频+番剧\n" +
                              "初次设置后可以在油猴插件选项中设置新的 Cookie\n(一般 Cookie 有效期比较久)")
        if (cookie) {
            GM_setValue("vip_cookie", cookie)
        }
        location.reload()
    }

    if (!vip_cookie) {
        promptCookieInput()
        return;
    }

    GM_registerMenuCommand("重设大会员 Cookie", promptCookieInput)

    if (location.href.includes("bangumi/play")) {
        // 隐藏 playerPop 遮盖
        setInterval(() => {
            const node = document.querySelector('div[class^="playerPop"]');
            if (node && node.style.display == '') {
                node.style.display = 'none'
                console.log("Patched playerPop display to none")
            }
        }, 2000)

        // 番剧页面多次切换有 bug, 刷新一下清除状态
        window.addEventListener('locationchange', function (event) {
            // 同一页面不再刷新
            if (event.detail?.origin && event.detail?.origin.match(/bangumi\/play\/ep\d+/)?.[0] !== location.href.match(/bangumi\/play\/ep\d+/)?.[0]) {
                console.log("Refresh page")
                location.reload()
            }
        });
    }

    // 替换 XHR, Hook 相关请求
    const oriGetAllResponseHeaders = XMLHttpRequest.prototype.getAllResponseHeaders
    XMLHttpRequest.prototype.getAllResponseHeaders = function(args) {
        return this._headers === undefined ? oriGetAllResponseHeaders.apply(this, args): this._headers
    }

    const oriSend = XMLHttpRequest.prototype.send
    XMLHttpRequest.prototype.send = function() {
        if (this._url && this._url.includes("playurl") && this._url.startsWith("https://api.bilibili.com")) {
            // 获取播放地址 API, 需要使用大会员 Cookie 进行请求
            console.log('Hook: playurl request')
            console.log(this)
            GM_xmlhttpRequest({
                method: this._method,
                url: this._url,
                anonymous: true, // 不携带原有 Cookie
                headers: {
                    "Cookie": vip_cookie, // 使用大会员 Cookie
                    "Referer": location.href
                },
                onload: (args) => {
                    console.log("Hooked response: ")
                    console.log(args)
                    // 解锁只有大会员才能选择的清晰度选项
                    console.log("Patched response text: " + args.response.replaceAll('"need_login":true', '"need_login":false').replaceAll('"need_vip":true', '"need_vip":false'))

                    this._headers = args.responseHeaders
                    Object.defineProperty(this, 'readyState', {
                        get: () => args.readyState
                    })
                    Object.defineProperty(this, 'status', {
                        get: () => args.status
                    })
                    Object.defineProperty(this, 'statusText', {
                        get: () => args.statusText
                    })
                    Object.defineProperty(this, 'response', {
                        get: () => args.response.replaceAll('"need_login":true', '"need_login":false').replaceAll('"need_vip":true', '"need_vip":false')
                    })
                    Object.defineProperty(this, 'responseText', {
                        get: () => args.responseText.replaceAll('"need_login":true', '"need_login":false').replaceAll('"need_vip":true', '"need_vip":false')
                    })

                    console.log(this)

                    this.onloadend?.(args); // 新版页面
                    this.onreadystatechange?.(args); // 旧版页面
                }

            })
        } else if (this._url && this._url.includes("x/player/wbi/v2") && this._url.startsWith("https://api.bilibili.com")) {
            // 获取当前用户 vip 状态的接口, 替换 response 中的 status, 否则普通视频页面不能切换清晰度
            console.log('Hook: wbi request')
            console.log(this)

            const oriLoadEnd = this.onloadend;
            this.onloadend = (args) => {
                console.log('Hooked response:')

                let response = JSON.parse(this.response);
                let responseText = JSON.parse(this.responseText);

                response.data.vip.status = 1;
                responseText.data.vip.status = 1;

                response = JSON.stringify(response)
                responseText = JSON.stringify(responseText)
                console.log(response)

                Object.defineProperty(this, 'response', {
                    get: () => response
                })
                Object.defineProperty(this, 'responseText', {
                    get: () => responseText
                })
                console.log(this)

                oriLoadEnd.apply(this, args)
            }
            oriSend.apply(this, arguments);
        } else {
            oriSend.apply(this, arguments);
        }
    };

    const oriOpen = XMLHttpRequest.prototype.open
    XMLHttpRequest.prototype.open = function() {
        this._method = arguments[0]
        this._url = arguments[1].startsWith("//") ? ("https:" + arguments[1]) : arguments[1]
        oriOpen.apply(this, arguments)
    };
})();

(() => {
    let oldPushState = history.pushState;
    history.pushState = function pushState() {
        let origin = location.href;
        let ret = oldPushState.apply(this, arguments);
        window.dispatchEvent(new CustomEvent('pushstate', { detail: { origin: origin } }));
        window.dispatchEvent(new CustomEvent('locationchange', { detail: { origin: origin } }));
        return ret;
    };

    let oldReplaceState = history.replaceState;
    history.replaceState = function replaceState() {
        let origin = location.href;
        let ret = oldReplaceState.apply(this, arguments);
        window.dispatchEvent(new CustomEvent('replacestate', { detail: { origin: origin } }));
        window.dispatchEvent(new CustomEvent('locationchange', { detail: { origin: origin } }));
        return ret;
    };

    window.addEventListener('popstate', () => {
        window.dispatchEvent(new CustomEvent('locationchange'));
    });
})();