504 lines
20 KiB
JavaScript
504 lines
20 KiB
JavaScript
/**
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* 可视化编排器前端（无框架）。
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*
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* 学习路径：
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* 1. init → loadCatalog：拉系统节点和插件节点
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* 2. 示例图 / 拖节点、点端口连线；图数据在 state.nodes / state.edges
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* 3. runGraph POST /api/run；若 status=needsDecision 弹出确认框
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* 4. 确认走 /api/run/{id}/decide；超时则 pollRun 等服务端自动采用默认方案
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*
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* selected / pending 只用于点击交互。发给后端的 JSON 不含 API Key，只有 credentialId。
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*/
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const state = {
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catalog: [],
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system: [],
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plugins: [],
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issues: [],
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credentials: [],
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pluginsRoot: "",
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nodes: [],
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edges: [],
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selected: null,
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pending: null,
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};
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const canvas = document.getElementById("canvas");
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const wires = document.getElementById("wires");
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const inspector = document.getElementById("inspector");
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const logEl = document.getElementById("log");
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const decisionModal = document.getElementById("decisionModal");
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const decisionPrompt = document.getElementById("decisionPrompt");
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const decisionReason = document.getElementById("decisionReason");
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const decisionRemain = document.getElementById("decisionRemain");
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const decisionOptions = document.getElementById("decisionOptions");
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const decisionText = document.getElementById("decisionText");
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const decisionTextLabel = document.getElementById("decisionTextLabel");
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const decisionError = document.getElementById("decisionError");
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const decisionSubmit = document.getElementById("decisionSubmit");
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const btnRun = document.getElementById("btnRun");
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let decisionTimer = null;
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let pendingRunId = null;
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let selectedOptionId = "";
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function uid(prefix) {
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return prefix + Math.random().toString(36).slice(2, 8);
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}
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function typeInfo(type) {
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return state.catalog.find((item) => item.type === type)
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|| state.system.find((item) => item.type === type)
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|| state.plugins.find((item) => item.type === type);
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}
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function pickNode(list, inputName) {
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return (list || []).find((item) => item.inputs?.some((p) => p.name === inputName));
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}
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/** 生成「抽城市 → 有城市才查天气」的示例图。连线 when=hasValidCities。 */
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function exampleGraph() {
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const fileInfo = pickNode(state.system, "filePath") || pickNode(state.catalog, "filePath");
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const weatherInfo = pickNode(state.plugins, "cities") || pickNode(state.system, "cities") || pickNode(state.catalog, "cities");
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if (!fileInfo || !weatherInfo) {
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logEl.textContent = "示例图需要目录里有「filePath 输入」和「cities 输入」的节点，请先刷新节点。";
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return { nodes: [], edges: [] };
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}
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const fileConfig = { credentialId: "llm-default" };
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if (fileInfo.inputs?.some((p) => p.name === "filePath")) {
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fileConfig.filePath = "Data/cities.txt";
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}
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return {
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nodes: [
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{ id: "n1", type: fileInfo.type, title: fileInfo.name, x: 60, y: 80, config: fileConfig },
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{ id: "n2", type: weatherInfo.type, title: weatherInfo.name, x: 420, y: 80, config: { credentialId: "llm-default" } },
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],
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edges: [
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{ id: "e1", from: "n1", to: "n2", fromPort: "cities", toPort: "cities", when: "hasValidCities" },
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],
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};
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}
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function renderGroup(title, items) {
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if (!items.length) {
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return `<div class="palette-group">${title}</div><p class="hint">无</p>`;
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}
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return `<div class="palette-group">${title}</div>` + items.map((item) => `
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<div class="palette-item" data-type="${item.type}">
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<strong>${item.name}</strong><span class="tag">${item.origin === "plugin" ? "插件" : "系统"}</span>
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<div class="hint">${item.description}</div>
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</div>`).join("");
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}
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function renderPalette() {
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const issues = (state.issues || []).map((item) => `<div class="issue">[${item.level}] ${item.source}: ${item.message}</div>`).join("");
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document.getElementById("palette").innerHTML =
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`<p class="hint">${state.pluginsRoot || ""}</p>` +
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renderGroup("系统节点", state.system) +
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renderGroup("插件节点", state.plugins) +
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(issues ? `<div class="palette-group">扫描说明</div>${issues}` : "");
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document.querySelectorAll(".palette-item").forEach((el) => {
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el.onclick = () => addNode(el.dataset.type);
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});
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}
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function addNode(type) {
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const info = typeInfo(type);
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if (!info) {
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logEl.textContent = `没有类型 ${type}，请先刷新节点。`;
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return;
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}
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const config = { credentialId: "llm-default" };
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if (info.inputs?.some((p) => p.name === "filePath")) {
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config.filePath = "Data/cities.txt";
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}
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state.nodes.push({
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id: uid("n"),
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type,
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title: info.name,
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x: 80 + state.nodes.length * 40,
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y: 70 + state.nodes.length * 30,
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config,
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});
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render();
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}
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/** 根据 state 重画节点 DOM；连线是 SVG，在 drawWires。 */
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function render() {
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canvas.innerHTML = "";
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for (const node of state.nodes) {
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const info = typeInfo(node.type);
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if (!info) {
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continue;
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}
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const el = document.createElement("div");
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el.className = `node ${node.type} ${info.origin}` + (state.selected?.kind === "node" && state.selected.id === node.id ? " selected" : "");
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el.style.left = node.x + "px";
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el.style.top = node.y + "px";
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el.innerHTML = `
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<div class="node-head">${node.title}</div>
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<div class="ports">
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<div class="port-col">
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${info.inputs.map((p) => `<div class="port in"><i class="dot" data-node="${node.id}" data-port="${p.name}" data-dir="in"></i>${p.name}</div>`).join("")}
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</div>
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<div class="port-col">
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${info.outputs.map((p) => `<div class="port out">${p.name}<i class="dot" data-node="${node.id}" data-port="${p.name}" data-dir="out"></i></div>`).join("")}
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</div>
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</div>`;
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el.querySelector(".node-head").onmousedown = (e) => startDrag(e, node);
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el.onclick = (e) => {
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if (e.target.classList.contains("dot")) return;
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state.selected = { kind: "node", id: node.id };
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render();
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};
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canvas.appendChild(el);
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}
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canvas.querySelectorAll(".dot").forEach((dot) => {
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dot.onclick = (e) => {
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e.stopPropagation();
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onPort(dot.dataset.node, dot.dataset.port, dot.dataset.dir);
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};
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});
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drawWires();
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renderInspector();
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}
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function startDrag(e, node) {
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e.preventDefault();
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const wrap = document.querySelector(".canvas-wrap").getBoundingClientRect();
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const ox = e.clientX - wrap.left - node.x;
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const oy = e.clientY - wrap.top - node.y;
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const el = e.currentTarget.parentElement;
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const move = (ev) => {
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node.x = Math.max(0, ev.clientX - wrap.left - ox);
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node.y = Math.max(0, ev.clientY - wrap.top - oy);
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if (el) {
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el.style.left = node.x + "px";
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el.style.top = node.y + "px";
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}
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drawWires();
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};
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const up = () => {
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window.removeEventListener("mousemove", move);
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window.removeEventListener("mouseup", up);
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};
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window.addEventListener("mousemove", move);
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window.addEventListener("mouseup", up);
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}
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/** 先点输出端口记下 pending，再点输入端口生成一条边。 */
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function onPort(nodeId, port, dir) {
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if (dir === "out") {
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state.pending = { nodeId, port };
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logEl.textContent = `已选输出 ${nodeTitle(nodeId)}.${port}，请点击下一个节点的输入端口。`;
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return;
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}
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if (!state.pending) {
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logEl.textContent = "请先点击上一节点的输出端口，再点本节点输入。";
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return;
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}
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if (state.pending.nodeId === nodeId) return;
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state.edges.push({
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id: uid("e"),
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from: state.pending.nodeId,
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to: nodeId,
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fromPort: state.pending.port,
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toPort: port,
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when: state.pending.port === "cities" || port === "cities" ? "hasValidCities" : "",
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});
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state.pending = null;
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state.selected = { kind: "edge", id: state.edges.at(-1).id };
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render();
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}
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function nodeTitle(id) {
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return state.nodes.find((n) => n.id === id)?.title ?? id;
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}
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function drawWires() {
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const wrap = document.querySelector(".canvas-wrap").getBoundingClientRect();
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wires.innerHTML = "";
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for (const edge of state.edges) {
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const from = document.querySelector(`.dot[data-node="${edge.from}"][data-port="${edge.fromPort}"][data-dir="out"]`);
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const to = document.querySelector(`.dot[data-node="${edge.to}"][data-port="${edge.toPort}"][data-dir="in"]`);
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if (!from || !to) continue;
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const a = from.getBoundingClientRect();
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const b = to.getBoundingClientRect();
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const x1 = a.left + a.width / 2 - wrap.left;
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const y1 = a.top + a.height / 2 - wrap.top;
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const x2 = b.left + b.width / 2 - wrap.left;
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const y2 = b.top + b.height / 2 - wrap.top;
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const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
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path.setAttribute("d", `M ${x1} ${y1} C ${x1 + 80} ${y1}, ${x2 - 80} ${y2}, ${x2} ${y2}`);
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path.setAttribute("class", "wire" + (state.selected?.kind === "edge" && state.selected.id === edge.id ? " selected" : ""));
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path.style.pointerEvents = "stroke";
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path.onclick = () => {
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state.selected = { kind: "edge", id: edge.id };
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render();
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};
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wires.appendChild(path);
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}
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}
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function renderInspector() {
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if (!state.selected) {
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inspector.innerHTML = `<p class="hint">选中节点可填固定输入；选中连线可改「上一节点输出 → 下一节点输入」和运行条件。</p>`;
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return;
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}
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if (state.selected.kind === "node") {
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const node = state.nodes.find((n) => n.id === state.selected.id);
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const info = typeInfo(node.type);
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inspector.innerHTML = `
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<div><strong>${info.name}</strong> <span class="tag">${info.origin === "plugin" ? "插件" : "系统"}</span></div>
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<p class="hint">${info.description}</p>
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<label>显示名</label>
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<input id="title" value="${node.title}" />
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<label>LLM 凭据</label>
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<select id="credentialId">${(state.credentials || []).map((c) => `<option value="${c.id}" ${ (node.config.credentialId || "llm-default") === c.id ? "selected" : ""}>${c.name}（${c.hasApiKey ? "已配置 Key" : "缺少 Key"}）</option>`).join("")}</select>
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<p class="hint">endpoint / API Key 由宿主注入进程，不会出现在输入端口或导出的流程图里。</p>
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${info.inputs.map((p) => `
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<label>固定输入 ${p.name}（${p.type}）${p.required ? " *" : ""}</label>
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<input data-config="${p.name}" value="${node.config[p.name] ?? ""}" placeholder="${p.description}" />
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`).join("")}
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<p class="hint">若该输入已从上一节点连线，运行时以连线为准。</p>
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<button type="button" id="delNode">删除节点</button>`;
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inspector.querySelector("#title").oninput = (e) => { node.title = e.target.value; };
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inspector.querySelector("#credentialId")?.addEventListener("change", (e) => { node.config.credentialId = e.target.value; });
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inspector.querySelectorAll("[data-config]").forEach((input) => {
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input.oninput = () => { node.config[input.dataset.config] = input.value; };
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});
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inspector.querySelector("#delNode").onclick = () => {
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state.edges = state.edges.filter((e) => e.from !== node.id && e.to !== node.id);
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state.nodes = state.nodes.filter((n) => n.id !== node.id);
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state.selected = null;
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render();
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};
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return;
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}
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const edge = state.edges.find((e) => e.id === state.selected.id);
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const from = state.nodes.find((n) => n.id === edge.from);
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const to = state.nodes.find((n) => n.id === edge.to);
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const fromInfo = typeInfo(from.type);
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const toInfo = typeInfo(to.type);
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inspector.innerHTML = `
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<div><strong>连线映射</strong></div>
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<p class="hint">上一节点输出 → 下一节点输入</p>
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<label>来自</label>
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<div>${from.title}</div>
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<label>输出端口</label>
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<select id="fromPort">${fromInfo.outputs.map((p) => `<option ${p.name === edge.fromPort ? "selected" : ""}>${p.name}</option>`).join("")}</select>
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<label>到达</label>
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<div>${to.title}</div>
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<label>输入端口</label>
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<select id="toPort">${toInfo.inputs.map((p) => `<option ${p.name === edge.toPort ? "selected" : ""}>${p.name}</option>`).join("")}</select>
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<label>运行条件</label>
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<select id="when">
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<option value="">始终执行下一节点</option>
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<option value="hasValidCities" ${edge.when === "hasValidCities" ? "selected" : ""}>仅当 hasValidCities 为 true</option>
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<option value="!hasValidCities" ${edge.when === "!hasValidCities" ? "selected" : ""}>仅当 hasValidCities 为 false</option>
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</select>
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<button type="button" id="delEdge">删除连线</button>`;
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inspector.querySelector("#fromPort").onchange = (e) => { edge.fromPort = e.target.value; drawWires(); };
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inspector.querySelector("#toPort").onchange = (e) => { edge.toPort = e.target.value; };
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inspector.querySelector("#when").onchange = (e) => { edge.when = e.target.value; };
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inspector.querySelector("#delEdge").onclick = () => {
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state.edges = state.edges.filter((item) => item.id !== edge.id);
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state.selected = null;
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render();
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};
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}
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/** 把画布图交给后端。可能直接完成，也可能弹出 decisionModal。 */
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async function runGraph() {
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closeDecision();
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logEl.textContent = "运行中…";
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btnRun.disabled = true;
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try {
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const res = await fetch("/api/run", {
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method: "POST",
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headers: { "Content-Type": "application/json" },
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body: JSON.stringify({ nodes: state.nodes, edges: state.edges }),
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});
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const data = await res.json();
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handleRunResult(data);
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} catch (err) {
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logEl.textContent = err?.message ?? "运行失败";
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btnRun.disabled = false;
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}
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}
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function formatRunLog(data) {
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const applied = data.appliedDecision
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? `\n已选方案: ${data.appliedDecision.optionId}${data.appliedDecision.timedOut ? "（超时默认）" : ""}${data.appliedDecision.text ? " / " + data.appliedDecision.text : ""}\n`
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: "";
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const steps = (data.steps || []).map((step) => {
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const head = `${step.title} (${step.type})${step.skipped ? " [跳过]" : ""}`;
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const inputs = JSON.stringify(step.inputs, null, 2);
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const outputs = JSON.stringify(step.outputs, null, 2);
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return `${head}\n输入:\n${inputs}\n输出:\n${outputs}\n${step.message ?? ""}`;
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}).join("\n\n-----\n\n");
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return (applied + (steps || "没有步骤。")).trim();
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}
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function handleRunResult(data) {
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if (data.status === "needsDecision" && data.decision) {
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logEl.textContent = "等待确认…\n\n" + formatRunLog(data);
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showDecision(data, data.error);
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return;
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}
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closeDecision();
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btnRun.disabled = false;
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if (!data.ok) {
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logEl.textContent = data.error ?? "运行失败";
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return;
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}
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logEl.textContent = formatRunLog(data);
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}
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function showDecision(data, errorText) {
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const decision = data.decision;
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pendingRunId = data.runId;
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selectedOptionId = decision.defaultOptionId;
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decisionPrompt.textContent = decision.prompt || "请选择一个方案。";
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decisionReason.textContent = decision.reason ? `原因：${decision.reason}` : "";
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decisionError.textContent = errorText || "";
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decisionError.classList.toggle("hidden", !errorText);
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decisionOptions.innerHTML = (decision.options || []).map((option) => `
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<label class="decision-option ${option.id === selectedOptionId ? "selected" : ""}" data-id="${option.id}" data-requires="${option.requiresText ? "1" : "0"}">
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<input type="radio" name="decisionOption" value="${option.id}" ${option.id === selectedOptionId ? "checked" : ""} />
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<strong>${option.label}</strong>
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<span>${option.description || ""}${option.isDefault ? "（超时将自动选择）" : ""}</span>
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</label>`).join("");
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decisionOptions.querySelectorAll(".decision-option").forEach((el) => {
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el.onchange = () => {
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selectedOptionId = el.dataset.id;
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decisionOptions.querySelectorAll(".decision-option").forEach((item) => {
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item.classList.toggle("selected", item.dataset.id === selectedOptionId);
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});
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syncDecisionText();
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};
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});
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decisionText.placeholder = (decision.options || []).find((o) => o.requiresText)?.textPlaceholder || "请输入";
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syncDecisionText();
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decisionModal.classList.remove("hidden");
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decisionModal.setAttribute("aria-hidden", "false");
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startDecisionTimer(decision.deadline);
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}
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function syncDecisionText() {
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const option = decisionOptions.querySelector(`.decision-option[data-id="${selectedOptionId}"]`);
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const needsText = option?.dataset.requires === "1";
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decisionText.classList.toggle("hidden", !needsText);
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decisionTextLabel.classList.toggle("hidden", !needsText);
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if (needsText) {
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decisionText.focus();
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}
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}
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/** 倒计时到 0 后去 GET 运行结果，因为服务端会自己按默认方案继续。 */
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function startDecisionTimer(deadline) {
|
||
if (decisionTimer) {
|
||
clearInterval(decisionTimer);
|
||
}
|
||
const tick = async () => {
|
||
const remain = Math.max(0, Math.ceil((new Date(deadline).getTime() - Date.now()) / 1000));
|
||
decisionRemain.textContent = String(remain);
|
||
if (remain <= 0) {
|
||
clearInterval(decisionTimer);
|
||
decisionTimer = null;
|
||
if (pendingRunId) {
|
||
await pollRun(pendingRunId);
|
||
}
|
||
}
|
||
};
|
||
tick();
|
||
decisionTimer = setInterval(tick, 500);
|
||
}
|
||
|
||
async function pollRun(runId) {
|
||
for (let i = 0; i < 8; i++) {
|
||
try {
|
||
const res = await fetch(`/api/run/${runId}`);
|
||
const data = await res.json();
|
||
if (data.status !== "needsDecision") {
|
||
handleRunResult(data);
|
||
return;
|
||
}
|
||
} catch {
|
||
btnRun.disabled = false;
|
||
return;
|
||
}
|
||
await new Promise((resolve) => setTimeout(resolve, 250));
|
||
}
|
||
}
|
||
|
||
function closeDecision() {
|
||
if (decisionTimer) {
|
||
clearInterval(decisionTimer);
|
||
decisionTimer = null;
|
||
}
|
||
pendingRunId = null;
|
||
decisionModal.classList.add("hidden");
|
||
decisionModal.setAttribute("aria-hidden", "true");
|
||
}
|
||
|
||
decisionSubmit.onclick = async () => {
|
||
if (!pendingRunId || !selectedOptionId) {
|
||
return;
|
||
}
|
||
decisionSubmit.disabled = true;
|
||
decisionError.classList.add("hidden");
|
||
try {
|
||
const res = await fetch(`/api/run/${pendingRunId}/decide`, {
|
||
method: "POST",
|
||
headers: { "Content-Type": "application/json" },
|
||
body: JSON.stringify({ optionId: selectedOptionId, text: decisionText.value }),
|
||
});
|
||
const data = await res.json();
|
||
handleRunResult(data);
|
||
} catch (err) {
|
||
decisionError.textContent = err?.message ?? "确认失败";
|
||
decisionError.classList.remove("hidden");
|
||
} finally {
|
||
decisionSubmit.disabled = false;
|
||
}
|
||
};
|
||
|
||
/** 拉节点目录和凭据列表，刷新左侧面板。 */
|
||
async function loadCatalog() {
|
||
const [catalog, credentials] = await Promise.all([
|
||
(await fetch("/api/catalog")).json(),
|
||
(await fetch("/api/credentials")).json(),
|
||
]);
|
||
state.system = catalog.system ?? [];
|
||
state.plugins = catalog.plugins ?? [];
|
||
state.catalog = catalog.nodes ?? [];
|
||
state.issues = catalog.issues ?? [];
|
||
state.pluginsRoot = catalog.pluginsRoot ?? "";
|
||
state.credentials = credentials ?? [];
|
||
renderPalette();
|
||
if (state.nodes.length) {
|
||
render();
|
||
}
|
||
}
|
||
|
||
document.getElementById("btnExample").onclick = () => {
|
||
const graph = exampleGraph();
|
||
state.nodes = graph.nodes;
|
||
state.edges = graph.edges;
|
||
state.selected = { kind: "edge", id: "e1" };
|
||
render();
|
||
};
|
||
btnRun.onclick = runGraph;
|
||
document.getElementById("btnRefresh").onclick = async () => {
|
||
logEl.textContent = "正在重新扫描系统节点和 plugins 目录…";
|
||
await loadCatalog();
|
||
logEl.textContent = `已刷新。系统 ${state.system.length} 个，插件 ${state.plugins.length} 个。`;
|
||
};
|
||
|
||
window.addEventListener("resize", drawWires);
|
||
|
||
(async function init() {
|
||
await loadCatalog();
|
||
document.getElementById("btnExample").click();
|
||
})();
|