feat(bidding): add initial auction control and display pages
This commit introduces a lightweight, browser-based auction system. It consists of two main components that communicate in real-time using the `BroadcastChannel` API, enabling a serverless front-end experience: - `display.html`: The public-facing screen for attendees. It shows the current item, price with smooth animation, and deal announcements. It automatically generates a unique session ID. - `control.html`: The auctioneer's control panel. It uses the session ID from the display page to connect. It allows for managing the auction flow, including loading items from a CSV, starting bids, updating prices, and finalizing sales.
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xiaomai
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bidding/control.html
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bidding/control.html
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<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="UTF-8">
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<title>Auction Control</title>
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<style>
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body {
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font-family: sans-serif;
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margin: 20px;
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background: #f5f5f5;
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}
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h1 { margin-bottom: 10px; }
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.section {
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background: #fff;
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padding: 15px;
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margin-bottom: 15px;
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border-radius: 8px;
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box-shadow: 0 2px 5px rgba(0,0,0,0.1);
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}
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input, select, button, textarea {
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margin: 5px 0;
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padding: 6px;
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border-radius: 4px;
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border: 1px solid #ccc;
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}
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button {
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cursor: pointer;
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background: #007bff;
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color: #fff;
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border: none;
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}
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button:hover {
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background: #0056b3;
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}
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table {
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width: 100%;
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border-collapse: collapse;
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margin-top: 10px;
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}
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th, td {
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border: 1px solid #ccc;
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padding: 6px;
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text-align: center;
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}
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th {
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background: #eee;
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}
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.history {
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max-height: 200px;
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overflow-y: auto;
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}
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</style>
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</head>
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<body>
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<h1>🎛 拍卖控制台</h1>
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<div>当前频道 ID: <b id="displayId"></b></div>
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<!-- 上传 CSV -->
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<div class="section">
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<h2>上传标品列表 (Items.csv)</h2>
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<input type="file" id="csvUpload" accept=".csv">
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<select id="itemSelect"></select>
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</div>
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<!-- 自定义输入 -->
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<div class="section">
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<h2>标品信息</h2>
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<label>名称: <input type="text" id="itemName"></label><br>
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<label>底价: <input type="number" id="itemBasePrice" value="0"></label><br>
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<label>备注: <input type="text" id="itemRemark"></label><br>
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<label>图片/影片链接: <input type="text" id="itemMedia"></label><br>
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<button id="startAuction">开始竞拍</button>
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</div>
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<!-- 出价 -->
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<div class="section">
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<h2>竞价控制</h2>
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<label>当前价格: <input type="number" id="currentPrice" value="0"></label><br>
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<button id="updatePrice">更新价格</button>
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<button id="dealItem">成交</button><br>
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<label>得标者: <input type="text" id="winnerName" placeholder="留空则显示 兴 旺 发"></label>
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</div>
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<!-- 成交历史 -->
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<div class="section">
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<h2>成交历史</h2>
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<div>总金额: <span id="totalAmount">0</span> 元</div>
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<div class="history">
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<table id="historyTable">
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<thead>
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<tr>
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<th>标品名称</th>
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<th>成交价</th>
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<th>得标者</th>
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</tr>
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</thead>
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<tbody></tbody>
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</table>
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</div>
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</div>
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<script>
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// 获取 displayId
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const urlParams = new URLSearchParams(location.search);
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const displayId = urlParams.get("display");
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if (!displayId) {
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alert("缺少 display 参数！请从 display.html 获取正确链接");
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}
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document.getElementById("displayId").textContent = displayId;
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const channel = new BroadcastChannel("auction-" + displayId);
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const itemSelect = document.getElementById("itemSelect");
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const itemName = document.getElementById("itemName");
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const itemBasePrice = document.getElementById("itemBasePrice");
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const itemRemark = document.getElementById("itemRemark");
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const itemMedia = document.getElementById("itemMedia");
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const currentPrice = document.getElementById("currentPrice");
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const winnerName = document.getElementById("winnerName");
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const totalAmountEl = document.getElementById("totalAmount");
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const historyTable = document.getElementById("historyTable").querySelector("tbody");
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let totalAmount = 0;
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let csvItems = [];
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// 解析 CSV
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document.getElementById("csvUpload").addEventListener("change", (e) => {
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const file = e.target.files[0];
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if (!file) return;
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const reader = new FileReader();
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reader.onload = (ev) => {
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const lines = ev.target.result.split(/\r?\n/).filter(l => l.trim());
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csvItems = lines.map(l => {
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const [name, basePrice, remark, media] = l.split(",");
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return { name, basePrice: Number(basePrice), remark, media };
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});
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refreshItemSelect();
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};
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reader.readAsText(file);
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});
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function refreshItemSelect() {
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itemSelect.innerHTML = "";
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csvItems.forEach((it, idx) => {
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const opt = document.createElement("option");
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opt.value = idx;
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opt.textContent = it.name;
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itemSelect.appendChild(opt);
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});
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}
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itemSelect.addEventListener("change", () => {
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const idx = itemSelect.value;
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if (csvItems[idx]) {
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const it = csvItems[idx];
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itemName.value = it.name;
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itemBasePrice.value = it.basePrice;
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itemRemark.value = it.remark;
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itemMedia.value = it.media;
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}
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});
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// 开始竞拍
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document.getElementById("startAuction").addEventListener("click", () => {
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const msg = {
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type: "showItem",
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name: itemName.value,
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basePrice: Number(itemBasePrice.value),
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remark: itemRemark.value,
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media: itemMedia.value
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};
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channel.postMessage(msg);
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currentPrice.value = itemBasePrice.value;
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});
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// 更新价格
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document.getElementById("updatePrice").addEventListener("click", () => {
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const msg = {
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type: "updatePrice",
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price: Number(currentPrice.value)
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};
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channel.postMessage(msg);
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});
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// 成交
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document.getElementById("dealItem").addEventListener("click", () => {
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const price = Number(currentPrice.value);
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const winner = winnerName.value || "";
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const msg = { type: "deal", price, winner };
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channel.postMessage(msg);
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// 保存历史
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const tr = document.createElement("tr");
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tr.innerHTML = `<td>${itemName.value}</td><td>${price}</td><td>${winner || "兴 旺 发"}</td>`;
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historyTable.appendChild(tr);
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totalAmount += price;
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totalAmountEl.textContent = totalAmount;
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});
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</script>
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</body>
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</html>
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