自动统计B站番剧评分，支持短评/长评综合统计
// ==UserScript==
// @name B站番剧评分统计
// @namespace https://pro-ivan.com/
// @version 1.3.9
// @description 自动统计B站番剧评分，支持短评/长评综合统计
// @author YujioNako & 看你看过的霓虹
// @match https://www.bilibili.com/bangumi/*
// @grant GM_addStyle
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @homepage https://github.com/YujioNako/true_ranking_plugin/
// @icon https://pro-ivan.com/favicon.ico
// @license MIT
// ==/UserScript==
(function() {
'use strict';
class ControlPanel {
constructor() {
this.isOpen = false;
this.currentMd = null;
this.createUI();
this.bindEvents();
//this.autoFillInput();
}
createUI() {
// 侧边栏按钮
this.toggleBtn = document.createElement('div');
this.toggleBtn.className = 'control-btn';
this.toggleBtn.textContent = '评分统计';
// 控制台主体
this.panel = document.createElement('div');
this.panel.className = 'control-panel';
this.panel.innerHTML = `
<div class="panel-header">
<h3>B站番剧评分统计</h3>
<button class="close-btn">×</button>
</div>
<div class="panel-content">
<div class="input-group">
<label>输入MD/EP ID或链接：</label>
<input type="text" id="bInput" class="b-input" placeholder="md123456 或 B站链接">
</div>
<button class="start-btn" id="start-btn">开始统计</button>
<div class="progress-area"></div>
<div class="result-area"></div>
</div>
`;
document.body.appendChild(this.toggleBtn);
document.body.appendChild(this.panel);
}
bindEvents() {
this.toggleBtn.addEventListener('click', () => this.togglePanel());
this.panel.querySelector('.close-btn').addEventListener('click', () => this.togglePanel());
this.panel.querySelector('.start-btn').addEventListener('click', () => this.startAnalysis());
}
togglePanel() {
this.isOpen = !this.isOpen;
this.panel.style.transform = `translateX(${this.isOpen ? '0' : '100%'})`;
this.toggleBtn.style.opacity = this.isOpen ? '0' : '1';
// 新增自动填充逻辑
if (this.isOpen) {
this.autoFillInput();
}
}
autoFillInput() {
const currentUrl = window.location.href;
const input = this.panel.querySelector('#bInput');
const mdMatch = currentUrl.match(/(\/md|md)(\d+)/i);
const epMatch = currentUrl.match(/(\/ep|ep)(\d+)/i);
const ssMatch = currentUrl.match(/(\/ss|ss)(\d+)/i);
// 清空原有内容
input.value = '正在获取md号...';
if (mdMatch) {
this.currentMd = mdMatch[2];
input.value = `md${this.currentMd}`;
this.loadSavedData();
} else if (epMatch) {
this.epToMd(`https://www.bilibili.com/bangumi/play/ep${epMatch[2]}`)
.then(md => {
this.currentMd = md.replace('md', '');
input.value = md;
this.loadSavedData();
});
} else if (ssMatch) {
this.epToMd(`https://www.bilibili.com/bangumi/play/ss${ssMatch[2]}`)
.then(md => {
this.currentMd = md.replace('md', '');
input.value = md;
this.loadSavedData();
});
}
}
async loadSavedData() {
if (!this.currentMd) return;
const saved = GM_getValue(`md${this.currentMd}`);
if (saved) {
saved.isCached = true;
this.showResults(saved);
console.log('找到cache');
}
}
async epToMd(url) {
try {
const res = await fetch(url);
const text = await res.text();
const mdMatch = text.match(/www\.bilibili\.com\/bangumi\/media\/md(\d+)/);
return mdMatch ? `md${mdMatch[1]}` : '';
} catch (e) {
console.log("EP转MD失败:", e);
return '';
}
}
startAnalysis() {
if (this.currentMd) {
GM_deleteValue(`md${this.currentMd}`);
}
this.panel.querySelector('#start-btn').innerHTML = '正在统计';
this.panel.querySelector('#start-btn').style = 'pointer-events: none; background: gray;';
const input = this.panel.querySelector('#bInput').value.trim();
if (!input) {
this.showMessage('输入不能为空！', 'error');
return;
}
this.clearResults();
new BScoreAnalyzer(this).analyze(input);
}
showMessage(message, type = 'info') {
const progressArea = this.panel.querySelector('.progress-area');
const msg = document.createElement('div');
msg.className = `message ${type}`;
msg.textContent = message;
progressArea.appendChild(msg);
}
updateProgress(type, progress, current, total) {
const progressArea = this.panel.querySelector('.progress-area');
const existing = progressArea.querySelector(`.${type}-progress`);
if (existing) {
existing.innerHTML = `${type}进度：${progress}% (${current}/${total})`;
} else {
const p = document.createElement('div');
p.className = `progress-item ${type}-progress`;
p.innerHTML = `${type}进度：${progress}% (${current}/${total})`;
progressArea.appendChild(p);
}
}
showResults(data) {
const resultArea = this.panel.querySelector('.result-area');
resultArea.innerHTML = `
<div class="result-section">
<h4>${data.title} <small>${new Date().toLocaleString('sv-SE')}${data.isCached ? '<span style="color:#00a1d6">(缓存数据)</span>' : ''}</small></h4>
<div class="result-grid">
<div class="result-item">
<span class="label">官方评分：</span>
<span class="value">${data.offical_score}</span>
</div>
<div class="result-item">
<span class="label">统计评分：</span>
<span class="value">${data.total_avg}(${data.total_probability}%)</span>
</div>
<div class="result-item">
<span class="label">标称评论数：</span>
<span class="value">${data.offical_count}</span>
</div>
<div class="result-item">
<span class="label">总样本数：</span>
<span class="value">${data.total_samples}</span>
</div>
</div>
<div class="details">
<div class="detail-section short">
<h5>短评统计</h5>
<p>平均分：${data.short_avg}(${data.short_probability}%)</p>
<p>样本数：${data.short_samples}</p>
</div>
<div class="detail-section long">
<h5>长评统计</h5>
<p>平均分：${data.long_avg}(${data.long_probability}%)</p>
<p>样本数：${data.long_samples}</p>
</div>
</div>
</div>
`;
}
clearResults() {
this.panel.querySelector('.progress-area').innerHTML = '';
this.panel.querySelector('.result-area').innerHTML = '';
}
}
class BScoreAnalyzer {
constructor(ui) {
this.ui = ui;
this.shortScores = [];
this.longScores = [];
this.totalCount = { short: 0, long: 0 };
this.metadata = {};
this.retryLimit = 5;
this.banWaitTime = 60000;
this.mdId = null;
}
async analyze(input) {
try {
const mdId = await this.processInput(input);
this.mdId = mdId;
if (!mdId) return;
await this.fetchBaseInfo(mdId);
await this.fetchReviews('short', mdId);
await this.fetchReviews('long', mdId);
this.showFinalResults();
} catch (e) {
this.ui.showMessage(`错误: ${e.message}`, 'error');
}
}
async processInput(input) {
let mdId = input.replace(/#| |番剧评分| /g, "");
if (mdId.match(/^(https?:)/)) {
const epId = mdId.match(/ep(\d+)/)?.[1];
if (epId) return this.ep2md(epId);
return mdId.match(/md(\d+)/)?.[1];
}
return mdId.replace(/^md/, '');
}
async ep2md(epId) {
const url = `https://www.bilibili.com/bangumi/play/ep${epId}`;
const res = await fetch(url);
const text = await res.text();
const mdMatch = text.match(/www\.bilibili\.com\/bangumi\/media\/md(\d+)/);
return mdMatch[1];
}
async fetchBaseInfo(mdId) {
const res = await fetch(`https://api.bilibili.com/pgc/review/user?media_id=${mdId}`);
const data = await res.json();
this.metadata = {
title: data.result.media.title,
official_score: data.result.media.rating?.score || "暂无",
official_count: data.result.media.rating?.count || "NaN"
};
}
async fetchReviews(type, mdId) {
let cursor;
let collected = 0;
do {
const result = await this.getReviewPage(type, mdId, cursor);
if (!result?.data?.list) break;
const scores = result.data.list.map(item => item.score);
type === 'short' ? this.shortScores.push(...scores) : this.longScores.push(...scores);
collected += result.data.list.length;
this.totalCount[type] = result.data.total || this.totalCount[type];
const progress = ((collected / this.totalCount[type]) * 100).toFixed(1);
this.ui.updateProgress(type, progress, collected, this.totalCount[type]);
if (cursor && cursor == result.data.next) break;
cursor = result.data.next;
await this.delay(200);
} while (cursor && cursor !== "0");
}
async getReviewPage(type, mdId, cursor) {
let retry = 0;
while (retry < this.retryLimit) {
try {
const url = new URL(`https://api.bilibili.com/pgc/review/${type}/list`);
url.searchParams.set('media_id', mdId);
if (cursor) url.searchParams.set('cursor', cursor);
const res = await fetch(url, {
headers: {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
"Referer": "https://www.bilibili.com"
},
credentials: 'include'
});
const data = await res.json();
if (data.code !== 0) {
document.querySelector('#start-btn').innerHTML = `等待第${retry + 1}次重试`;
console.log(`等待第${retry + 1}次重试`);
await this.delay(this.banWaitTime);
retry++;
document.querySelector('#start-btn').innerHTML = `正在统计`;
continue;
}
return data;
} catch (e) {
document.querySelector('#start-btn').innerHTML = `等待第${retry + 1}次重试`;
console.log(`等待第${retry + 1}次重试`);
await this.delay(1000);
retry++;
document.querySelector('#start-btn').innerHTML = `正在统计`;
}
}
throw new Error('请求失败，请稍后重试');
}
showFinalResults() {
const totalScores = [...this.shortScores, ...this.longScores];
const calcAvg = scores => scores.length
? (scores.reduce((a, b) => a + b, 0) / scores.length).toFixed(1)
: '暂无';
function calculateProbability(totalScores, officialCount) {
const n = totalScores.length;
console.log(n,officialCount,totalScores);
if (n === 0 || officialCount === 0) return 0; // 处理无效输入
if (n >= officialCount) return 1; // 记录数等于甚至大于标称，无误差，概率为1
// 计算样本均值和样本标准差
const sum = totalScores.reduce((acc, score) => acc + score, 0);
const sampleMean = sum / n;
const sumSquaredDiffs = totalScores.reduce((acc, score) => acc + Math.pow(score - sampleMean, 2), 0);
const sampleVariance = sumSquaredDiffs / (n - 1);
const s = Math.sqrt(sampleVariance);
// 计算标准误，考虑有限总体校正
let standardError;
const populationSize = officialCount;
if (populationSize <= 1) {
standardError = 0;
} else {
const finitePopulationCorrection = Math.sqrt((populationSize - n) / (populationSize - 1));
standardError = (s / Math.sqrt(n)) * finitePopulationCorrection;
}
if (standardError === 0) return 1; // 无误差，概率为1
const Z = 0.1 / standardError;
console.log(2 * standardNormalCDF(Z) - 1);
return 2 * standardNormalCDF(Z) - 1;
}
// 标准正态分布CDF近似计算
function standardNormalCDF(x) {
const sign = x < 0 ? -1 : 1;
x = Math.abs(x) / Math.sqrt(2);
const t = 1.0 / (1.0 + 0.3275911 * x);
const y = t * (0.254829592 + t*(-0.284496736 + t*(1.421413741 + t*(-1.453152027 + t*1.061405429))));
const erf = 1 - y * Math.exp(-x * x);
return 0.5 * (1 + sign * erf);
}
const resultData = {
title: this.metadata.title,
offical_score: this.metadata.official_score,
total_avg: calcAvg(totalScores),
offical_count: this.metadata.official_count,
total_samples: totalScores.length,
total_probability: (100*calculateProbability(totalScores, this.metadata.official_count)).toFixed(2),
short_avg: calcAvg(this.shortScores),
short_samples: this.shortScores.length,
short_probability: (100*calculateProbability(this.shortScores, this.totalCount.short)).toFixed(2),
long_avg: calcAvg(this.longScores),
long_samples: this.longScores.length,
long_probability: (100*calculateProbability(this.longScores, this.totalCount.long)).toFixed(2),
timestamp: new Date().toISOString()
};
GM_setValue(`md${this.mdId}`, resultData);
console.log('cache已保存');
this.ui.showResults(resultData);
document.querySelector('#start-btn').innerHTML = '开始统计';
document.querySelector('#start-btn').style = '';
}
delay(ms) {
return new Promise(r => setTimeout(r, ms));
}
}
// 添加样式
GM_addStyle(`
.control-btn {
position: fixed;
right: 20px;
top: 50%;
transform: translateY(-50%);
background: #00a1d6;
color: white;
padding: 12px 20px;
border-radius: 25px 0 0 25px;
cursor: pointer;
transition: all 0.3s;
z-index: 9999;
box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.control-panel {
position: fixed;
right: 0;
top: 15%;
transform: translateY(-50%) translateX(100%);
width: 350px;
background: white;
border-radius: 10px 0 0 10px;
box-shadow: -2px 0 10px rgba(0,0,0,0.1);
transition: transform 0.3s;
z-index: 9998;
padding: 20px;
max-height: 90vh;
overflow-y: auto;
}
.panel-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 15px;
}
.close-btn {
background: none;
border: none;
font-size: 24px;
cursor: pointer;
color: #666;
}
.input-group {
margin-bottom: 15px;
}
.b-input {
width: 100%;
padding: 8px;
margin-top: 5px;
border: 1px solid #ddd;
border-radius: 4px;
}
.start-btn {
width: 100%;
padding: 10px;
background: #00a1d6;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
transition: background 0.3s;
}
.start-btn:hover {
background: #0087b3;
}
.progress-area {
margin: 15px 0;
padding: 10px;
background: #f5f5f5;
border-radius: 4px;
}
.result-area {
margin-top: 15px;
}
.result-section {
background: #f9f9f9;
padding: 15px;
border-radius: 4px;
}
.result-grid {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 10px;
margin: 10px 0;
}
.result-item {
background: white;
padding: 10px;
border-radius: 4px;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.details {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 10px;
}
.detail-section {
padding: 10px;
background: white;
border-radius: 4px;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
`);
// 初始化控制台
new ControlPanel();
})();
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