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+(function() { + const textarea = document.getElementById('yaml-input'); + const errorEl = document.getElementById('error'); + const metaEl = document.getElementById('meta'); + const renderBtn = document.getElementById('render-btn'); + + const editor = CodeMirror.fromTextArea(textarea, { + mode: 'yaml', + lineNumbers: true, + lineWrapping: true, + tabSize: 2, + indentUnit: 2, + }); + + const sample = `openapi: 3.0.0 +info: + title: Sample API + version: 1.0.0 +paths: + /api/test/bla: + get: + summary: Get bla + responses: + '200': + description: OK + /api/test/foo: + post: + summary: Create foo + responses: + '201': + description: Created + /api/users/{id}: + get: + summary: Get user + responses: + '200': { description: OK } +`; + editor.setValue(sample); + + function selectWholeLine(lineNumber) { + const lineText = editor.getLine(lineNumber) || ''; + const from = { line: lineNumber, ch: 0 }; + const to = { line: lineNumber, ch: lineText.length }; + editor.setSelection(from, to); + editor.scrollIntoView({ from, to }, 100); + editor.focus(); + } + + function jumpToEndpointInYaml(path) { + const lineCount = editor.lineCount(); + const target = `${path}:`; + for (let i = 0; i < lineCount; i++) { + const line = editor.getLine(i); + if (!line) continue; + if (line.trimStart().startsWith(target)) { + selectWholeLine(i); + return true; + } + } + return false; + } + + async function parseAndRender() { + errorEl.textContent = ''; + metaEl.textContent = ''; + + const yamlText = editor.getValue(); + try { + const res = await fetch('/api/parse', { + method: 'POST', + headers: { 'Content-Type': 'application/json' }, + body: JSON.stringify({ yaml: yamlText }) + }); + const data = await res.json(); + if (!res.ok) { + throw new Error(data && data.error ? data.error : 'Failed to parse'); + } + + const { graph, info } = data; + if (info && (info.title || info.version)) { + const title = info.title || 'Untitled'; + const version = info.version ? ` v${info.version}` : ''; + metaEl.textContent = `${title}${version}`; + } + + const endpoints = graph.endpoints || []; + function onNodeClick(segmentId) { + const match = endpoints.find(ep => { + const parts = (ep.path || '').split('/').filter(Boolean); + return parts.includes(segmentId); + }); + if (match) { + if (!jumpToEndpointInYaml(match.path)) { + // Fallback: best-effort contains check + const lineCount = editor.lineCount(); + for (let i = 0; i < lineCount; i++) { + const line = editor.getLine(i) || ''; + if (line.includes(match.path)) { + selectWholeLine(i); + break; + } + } + } + } + } + + renderGraph('#graph', graph, { onNodeClick }); + } catch (e) { + errorEl.textContent = e.message || String(e); + } + } + + renderBtn.addEventListener('click', parseAndRender); + + // initial render + parseAndRender(); +})(); diff --git a/public/graph.js b/public/graph.js new file mode 100644 index 0000000..c220432 --- /dev/null +++ b/public/graph.js @@ -0,0 +1,157 @@ +function renderGraph(containerSelector, graph, options = {}) { + const container = document.querySelector(containerSelector); + container.innerHTML = ''; + const width = container.clientWidth || 800; + const height = container.clientHeight || 500; + const paddingX = 60; + const paddingY = 30; + + const svg = d3.select(container) + .append('svg') + .attr('viewBox', [0, 0, width, height]) + .attr('width', '100%') + .attr('height', '100%'); + + const g = svg.append('g'); + + const zoom = d3.zoom().on('zoom', (event) => { + g.attr('transform', event.transform); + }); + svg.call(zoom); + + const links = graph.links.map(d => Object.assign({}, d)); + const nodes = graph.nodes.map(d => Object.assign({}, d)); + const endpoints = Array.isArray(graph.endpoints) ? graph.endpoints : []; + + // Visual constants + const nodeRadius = 16; + const labelOffset = 12; // below the circle + + // Compute left-to-right depth strictly from path segment indices + const { depths, maxDepth } = computeDepthsFromEndpoints(nodes, endpoints); + const depthScale = d3.scaleLinear() + .domain([0, Math.max(1, maxDepth)]) + .range([paddingX, Math.max(paddingX + 1, width - paddingX)]); + + // Seed initial positions near their depth column with limited vertical jitter + for (const n of nodes) { + const d = depths.get(n.id) ?? 0; + n.x = depthScale(d) + (Math.random() - 0.5) * 30; + n.y = height / 2 + (Math.random() - 0.5) * (height * 0.3); + } + + const link = g.append('g') + .attr('stroke-width', 1.5) + .selectAll('line') + .data(links) + .enter().append('line') + .attr('class', 'link'); + + const node = g.append('g') + .selectAll('g') + .data(nodes) + .enter().append('g') + .attr('class', 'node'); + + node.append('circle') + .attr('r', nodeRadius) + .call(drag(simulation())); + + node.append('text') + .attr('x', 0) + .attr('y', nodeRadius + labelOffset) + .attr('text-anchor', 'middle') + .text(d => d.id); + + // Node click -> delegate to callback if provided + if (typeof options.onNodeClick === 'function') { + node.style('cursor', 'pointer') + .on('click', (event, d) => { + options.onNodeClick(d.id, d); + }); + } + + const sim = simulation(); + sim.nodes(nodes).on('tick', ticked); + sim.force('link').links(links); + + function ticked() { + // Clamp nodes vertically to avoid drifting too far down/up + const minY = paddingY + nodeRadius; + const maxY = height - paddingY - nodeRadius - labelOffset - 2; + for (const n of nodes) { + if (n.y < minY) n.y = minY; + else if (n.y > maxY) n.y = maxY; + } + + link + .attr('x1', d => d.source.x) + .attr('y1', d => d.source.y) + .attr('x2', d => d.target.x) + .attr('y2', d => d.target.y); + + node.attr('transform', d => `translate(${d.x},${d.y})`); + } + + function simulation() { + // Gentle bias left->right; organic, tree-like cohesion + const fx = d3.forceX(d => depthScale(depths.get(d.id) ?? 0)).strength(0.55); + const fy = d3.forceY(height / 2).strength(0.1); + + return d3.forceSimulation() + .velocityDecay(0.35) + .force('link', d3.forceLink().id(d => d.id).distance(40).strength(1.1).iterations(2)) + .force('charge', d3.forceManyBody().strength(-420)) + .force('collision', d3.forceCollide().radius(nodeRadius + 50).strength(0.96)) + .force('x', fx) + .force('y', fy); + } + + function drag(sim) { + function dragstarted(event) { + if (!event.active) sim.alphaTarget(0.3).restart(); + event.subject.fx = event.subject.x; + event.subject.fy = event.subject.y; + } + + function dragged(event) { + event.subject.fx = event.x; + event.subject.fy = event.y; + } + + function dragended(event) { + if (!event.active) sim.alphaTarget(0); + event.subject.fx = null; + event.subject.fy = null; + } + + return d3.drag() + .on('start', dragstarted) + .on('drag', dragged) + .on('end', dragended); + } + + function computeDepthsFromEndpoints(nodes, endpoints) { + const nodeIds = new Set(nodes.map(n => n.id)); + const depth = new Map(); + let maxDepth = 0; + for (const ep of endpoints) { + const p = (ep && ep.path) || ''; + const segs = p.split('/').filter(Boolean); + for (let i = 0; i < segs.length; i++) { + const seg = segs[i]; + if (!nodeIds.has(seg)) continue; + const current = depth.get(seg); + if (current === undefined || i < current) { + depth.set(seg, i); + } + if (i > maxDepth) maxDepth = i; + } + } + // Any nodes not appearing in endpoints get depth 0 + for (const id of nodeIds) { + if (!depth.has(id)) depth.set(id, 0); + } + return { depths: depth, maxDepth }; + } +} diff --git a/public/index.html b/public/index.html new file mode 100644 index 0000000..cc81cb4 --- /dev/null +++ b/public/index.html @@ -0,0 +1,36 @@ + + + + + + SpecGraph - OpenAPI Endpoint Graph + + + + +
+
+
+

OpenAPI YAML

+ +
+ +
+
+
+
+

Endpoint Graph

+
+
+
+
+
+ + + + + + + + + diff --git a/public/styles.css b/public/styles.css new file mode 100644 index 0000000..2980f1d --- /dev/null +++ b/public/styles.css @@ -0,0 +1,16 @@ +html, body { height: 100%; margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; } +#app { display: flex; height: 100%; } +#left-pane { flex: 0 0 33.333%; display: flex; flex-direction: column; min-width: 0; } +#right-pane { flex: 1 1 66.667%; display: flex; flex-direction: column; min-width: 0; } +.pane-header { display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; border-bottom: 1px solid #e5e7eb; background: #f9fafb; } +.pane-header h2 { margin: 0; font-size: 16px; } +#render-btn { padding: 6px 10px; border: 1px solid #d1d5db; border-radius: 6px; background: white; cursor: pointer; } +#render-btn:hover { background: #f3f4f6; } +#yaml-input { flex: 1; width: 100%; } +.CodeMirror { height: 100%; font-size: 13px; } +#error { color: #b91c1c; padding: 6px 12px; min-height: 22px; } +#graph { flex: 1; position: relative; } +svg { width: 100%; height: 100%; display: block; background: #ffffff; } +.node circle { fill: #3b82f6; stroke: #1e40af; stroke-width: 1px; } +.node text { font-size: 12px; fill: #111827; pointer-events: none; } +.link { stroke: #9ca3af; stroke-opacity: 0.8; } diff --git a/server.js b/server.js new file mode 100644 index 0000000..ba96fc5 --- /dev/null +++ b/server.js @@ -0,0 +1,80 @@ +const express = require('express'); +const path = require('path'); +const yaml = require('js-yaml'); + +const app = express(); +const PORT = process.env.PORT || 3000; + +app.use(express.static(path.join(__dirname, 'public'))); +app.use(express.json({ limit: '2mb' })); + +app.get('/api/health', (req, res) => { + res.json({ status: 'ok' }); +}); + +function buildGraphFromPaths(pathsObject) { + const httpMethods = new Set(['get','put','post','delete','options','head','patch','trace']); + const nodeIdSet = new Set(); + const linkKeySet = new Set(); + const nodes = []; + const links = []; + const endpoints = []; + + for (const pathKey of Object.keys(pathsObject || {})) { + const pathItem = pathsObject[pathKey] || {}; + // Collect endpoints + for (const method of Object.keys(pathItem)) { + const lower = method.toLowerCase(); + if (httpMethods.has(lower)) { + endpoints.push({ method: lower.toUpperCase(), path: pathKey }); + } + } + // Build nodes/links from URL segments + const segments = pathKey.split('/').filter(Boolean); + if (segments.length === 0) continue; + + // Ensure nodes + for (const seg of segments) { + if (!nodeIdSet.has(seg)) { + nodeIdSet.add(seg); + nodes.push({ id: seg }); + } + } + + // Create sequential links along the path + for (let i = 0; i < segments.length - 1; i++) { + const source = segments[i]; + const target = segments[i + 1]; + const key = `${source}|${target}`; + if (!linkKeySet.has(key)) { + linkKeySet.add(key); + links.push({ source, target }); + } + } + } + + return { nodes, links, endpoints }; +} + +app.post('/api/parse', (req, res) => { + try { + const { yaml: yamlText } = req.body || {}; + if (typeof yamlText !== 'string' || yamlText.trim() === '') { + return res.status(400).json({ error: 'Missing yaml string in body' }); + } + const spec = yaml.load(yamlText); + if (!spec || typeof spec !== 'object') { + return res.status(400).json({ error: 'Invalid YAML content' }); + } + + const pathsObject = spec.paths || {}; + const graph = buildGraphFromPaths(pathsObject); + res.json({ graph, info: { title: spec.info && spec.info.title, version: spec.info && spec.info.version } }); + } catch (err) { + res.status(400).json({ error: err.message || 'Failed to parse YAML' }); + } +}); + +app.listen(PORT, () => { + console.log(`Server listening on http://localhost:${PORT}`); +});