655e039aad
原实现是 Canvas 画笔画板，与「文字白板/记事本」需求不符。重做为纯文本实时协作： - model：strokes JSON -> content TEXT + version INT（乐观锁）+ edit_count； schema/dao/service 同步重构，append_stroke/replace_strokes -> update_content。 - WS 协议：stroke -> edit（发完整文本，debounce 400ms）；init 下发 content/version。 update 帧广播给他人，cleared 广播给所有人。 - 前端：canvas -> textarea；收到远端 update 用最长公共前后缀算变更区间， 仅替换该区间并保留光标（区间前不动/后平移/内移末尾）；清空/复制文本按钮。 - schema.sql 更新 whiteboard 表 DDL；DB 旧表 DROP 重建（开发环境）。 - 测试脚本与 README 同步更新。
85 lines
3.2 KiB
JavaScript
85 lines
3.2 KiB
JavaScript
/* 白板管理页：拉取 /api/admin/wb、渲染表格、删除、新建并跳转。 */
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(function () {
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"use strict";
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const { el, toast, fmtTime, api } = window.ZK;
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const listEl = document.getElementById("list");
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const countEl = document.getElementById("count");
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const refreshBtn = document.getElementById("refresh");
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const newBtn = document.getElementById("newBtn");
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refreshBtn.addEventListener("click", load);
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newBtn.addEventListener("click", () => {
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// 生成一个随机 board_id 并打开（访问即创建）
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const id = "b_" + Math.random().toString(36).slice(2, 10);
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window.open(`/wb/${id}`, "_blank");
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});
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async function load() {
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listEl.innerHTML = '<div class="skel">加载中…</div>';
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countEl.textContent = "";
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try {
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const res = await api("/api/admin/wb?limit=500&offset=0");
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if (!res.ok) throw new Error("HTTP " + res.status);
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const body = await res.json();
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render(body.items || []);
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countEl.textContent = `共 ${body.total} 个白板`;
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} catch (e) {
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listEl.innerHTML = '<div class="empty">加载失败：' + (e.message || e) + "</div>";
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}
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}
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function render(items) {
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if (!items.length) {
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listEl.innerHTML = '<div class="empty">还没有白板。点「新建并打开」创建一个。</div>';
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return;
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}
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const table = el("table", { class: "wb-admin-table" });
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const thead = el("thead", null,
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el("tr", null,
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el("th", { class: "col-id" }, "白板 ID"),
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el("th", { class: "col-mods" }, "修改次数"),
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el("th", { class: "col-created" }, "创建时间"),
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el("th", { class: "col-updated" }, "上次修改"),
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el("th", { class: "col-act" }, "操作")
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)
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);
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const tbody = el("tbody", null);
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for (const b of items) {
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const row = el("tr", null,
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el("td", { class: "col-id" },
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el("a", { class: "bid link", href: `/wb/${b.board_id}`, target: "_blank" }, b.board_id)
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),
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el("td", { class: "col-mods mono" }, String(b.edit_count ?? 0)),
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el("td", { class: "col-created muted" }, fmtTime(b.created_at)),
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el("td", { class: "col-updated muted" }, fmtTime(b.updated_at)),
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el("td", { class: "col-act" },
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el("button", { class: "btn danger", onclick: () => remove(b, row) }, "删除")
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)
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);
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tbody.appendChild(row);
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}
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table.appendChild(thead);
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table.appendChild(tbody);
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listEl.innerHTML = "";
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listEl.appendChild(table);
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}
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async function remove(b, row) {
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if (!confirm(`确定删除白板「${b.board_id}」？\n所有在线协作者会被断开，内容不可恢复。`)) return;
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try {
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const res = await api(`/api/admin/wb/${encodeURIComponent(b.board_id)}`, { method: "DELETE" });
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if (res.status === 404) { toast("白板已不存在"); }
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else if (!res.ok) throw new Error("HTTP " + res.status);
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row.classList.add("row-removed");
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setTimeout(() => row.remove(), 250);
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toast("已删除");
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const m = (countEl.textContent || "").match(/(\d+)/);
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if (m) countEl.textContent = `共 ${Math.max(0, Number(m[1]) - 1)} 个白板`;
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} catch (e) {
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toast("删除失败：" + (e.message || e), "err");
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}
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}
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load();
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})();
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