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2314 lines (2015 loc) · 95.6 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>n8n Workflow Visualization</title>
<style>
body {
margin: 0;
padding: 0;
background-color: #f9f9f9;
color: #333;
font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
overflow: hidden;
}
.workflow-canvas {
width: 2000px;
height: 2000px;
position: relative;
background-color: #f9f9f9;
background-image:
radial-gradient(circle, #e1e1e1 1px, transparent 1px);
background-size: 16px 16px;
background-position: 0 0;
}
.workflow-node {
position: absolute;
background-color: #ffffff;
border: 2px solid #e1e1e1;
border-radius: 12px;
padding: 16px 20px;
min-width: 240px;
cursor: grab;
transition: all 0.3s ease;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
font-weight: 500;
}
.workflow-node:active {
cursor: grabbing;
}
.workflow-node.dragging {
box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
transform: scale(1.02);
z-index: 1000;
}
.workflow-node:hover {
border-color: #ff6d5a;
transform: translateY(-4px);
box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}
.workflow-node.trigger {
border-color: #ff6d5a;
background: linear-gradient(135deg, #fff 0%, #fff5f4 100%);
}
.workflow-node.action {
border-color: #7c3aed;
background: linear-gradient(135deg, #fff 0%, #f8f6ff 100%);
}
.workflow-node.condition {
border-color: #00c851;
background: linear-gradient(135deg, #fff 0%, #f0fff4 100%);
position: relative;
}
.workflow-node.if, .workflow-node.switch {
border-color: #00c851;
background: linear-gradient(135deg, #fff 0%, #f0fff4 100%);
}
.node-header {
display: flex;
align-items: center;
gap: 12px;
margin-bottom: 8px;
}
.node-icon {
width: 32px;
height: 32px;
border-radius: 8px;
display: flex;
align-items: center;
justify-content: center;
font-size: 16px;
background-color: #f3f4f6;
border: 1px solid #e5e7eb;
}
.workflow-node.if .node-icon,
.workflow-node.switch .node-icon {
background-color: #e8f5e8;
border-color: #00c851;
}
.workflow-node.trigger .node-icon {
background-color: #fff5f4;
border-color: #ff6d5a;
}
.workflow-node.action .node-icon {
background-color: #f8f6ff;
border-color: #7c3aed;
}
/* Node Inspection Panel Styles */
.node-inspection-panel {
position: fixed;
top: 0;
right: -400px;
width: 400px;
height: 100vh;
background: #ffffff;
border-left: 1px solid #e5e7eb;
box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
z-index: 2000;
transition: right 0.3s ease;
overflow: hidden;
display: flex;
flex-direction: column;
}
.node-inspection-panel.open {
right: 0;
}
.panel-header {
padding: 20px;
border-bottom: 1px solid #e5e7eb;
background: #f9fafb;
}
.node-identity {
display: flex;
align-items: center;
gap: 12px;
margin-bottom: 12px;
}
.node-identity h3 {
margin: 0;
font-size: 18px;
font-weight: 600;
color: #1f2937;
}
.node-type-badge {
background: #e5e7eb;
color: #6b7280;
padding: 4px 8px;
border-radius: 4px;
font-size: 12px;
font-weight: 500;
}
.panel-actions {
display: flex;
gap: 8px;
}
.panel-action-btn {
padding: 6px 12px;
border: 1px solid #d1d5db;
background: white;
border-radius: 6px;
font-size: 12px;
cursor: pointer;
transition: all 0.2s ease;
}
.panel-action-btn:hover {
background: #f3f4f6;
border-color: #9ca3af;
}
.panel-action-btn.close {
background: #ef4444;
color: white;
border-color: #dc2626;
}
.panel-tabs {
display: flex;
border-bottom: 1px solid #e5e7eb;
background: #f9fafb;
}
.panel-tab {
flex: 1;
padding: 12px 16px;
border: none;
background: transparent;
font-size: 14px;
font-weight: 500;
color: #6b7280;
cursor: pointer;
transition: all 0.2s ease;
border-bottom: 2px solid transparent;
}
.panel-tab:hover {
background: #f3f4f6;
color: #374151;
}
.panel-tab.active {
color: #1f2937;
border-bottom-color: #3b82f6;
background: white;
}
.panel-content {
padding: 20px;
overflow-y: auto;
flex: 1;
min-height: 0;
}
.info-section {
margin-bottom: 24px;
}
.info-section h4 {
margin: 0 0 12px 0;
font-size: 14px;
font-weight: 600;
color: #374151;
text-transform: uppercase;
letter-spacing: 0.5px;
}
.parameter-list {
space-y: 8px;
}
.parameter-item {
padding: 12px;
background: #f9fafb;
border: 1px solid #e5e7eb;
border-radius: 6px;
margin-bottom: 8px;
}
.parameter-name {
font-weight: 600;
color: #1f2937;
font-size: 13px;
}
.parameter-value {
color: #6b7280;
font-size: 12px;
font-family: 'SF Mono', Consolas, monospace;
margin-top: 4px;
word-break: break-word;
}
.parameter-description {
color: #9ca3af;
font-size: 11px;
margin-top: 4px;
line-height: 1.4;
}
.status-indicator {
display: inline-flex;
align-items: center;
gap: 6px;
padding: 4px 8px;
border-radius: 4px;
font-size: 12px;
font-weight: 500;
}
.status-indicator.idle {
background: #f3f4f6;
color: #6b7280;
}
.status-indicator.success {
background: #dcfce7;
color: #166534;
}
.status-indicator.error {
background: #fef2f2;
color: #dc2626;
}
.node-tooltip {
position: absolute;
background: #1f2937;
color: white;
padding: 8px 12px;
border-radius: 6px;
font-size: 12px;
pointer-events: none;
z-index: 1500;
max-width: 250px;
line-height: 1.4;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.node-tooltip::after {
content: '';
position: absolute;
top: 100%;
left: 50%;
transform: translateX(-50%);
border: 4px solid transparent;
border-top-color: #1f2937;
}
.node-title {
font-weight: 600;
font-size: 16px;
color: #1f2937;
line-height: 1.2;
}
.node-subtitle {
font-size: 13px;
color: #6b7280;
margin-top: 4px;
font-weight: 400;
}
.workflow-connection {
position: absolute;
pointer-events: none;
}
.workflow-connection path {
fill: none;
stroke: #9ca3af;
stroke-width: 2;
filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}
.workflow-connection path:hover {
stroke: #6366f1;
stroke-width: 3;
}
.loading {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
text-align: center;
color: #6b7280;
font-size: 16px;
font-weight: 500;
}
.error {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
text-align: center;
color: #dc2626;
background-color: #fef2f2;
border: 1px solid #fecaca;
padding: 24px;
border-radius: 12px;
max-width: 400px;
font-weight: 500;
}
.zoom-controls {
position: absolute;
bottom: 20px;
right: 20px;
display: flex;
flex-direction: column;
gap: 8px;
z-index: 1000;
}
.zoom-btn {
width: 44px;
height: 44px;
background-color: #ffffff;
border: 1px solid #e1e5e9;
border-radius: 8px;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: all 0.2s ease;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
font-size: 18px;
font-weight: 600;
color: #374151;
}
.zoom-btn:hover {
background-color: #f3f4f6;
border-color: #d1d5db;
transform: translateY(-1px);
box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}
.zoom-btn:active {
transform: translateY(0);
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.zoom-level {
background-color: #f9fafb;
border: 1px solid #e1e5e9;
border-radius: 6px;
padding: 8px 12px;
font-size: 12px;
font-weight: 500;
color: #6b7280;
text-align: center;
min-width: 44px;
}
.workflow-container {
position: relative;
width: 100%;
height: 100vh;
overflow: hidden;
}
.workflow-viewport {
width: 100%;
height: 100%;
transform-origin: 0 0;
transition: transform 0.3s ease;
}
</style>
</head>
<body>
<div class="workflow-container">
<div class="workflow-viewport" id="viewport">
<div class="workflow-canvas" id="canvas">
<div class="loading" id="loading">Loading workflow...</div>
<div class="error" id="error" style="display: none;"></div>
</div>
<svg id="connections" style="position: absolute; top: 0; left: 0; width: 2000px; height: 2000px; pointer-events: none; overflow: visible;">
<defs></defs>
</svg>
</div>
<!-- Zoom Controls -->
<div class="zoom-controls">
<button class="zoom-btn" id="zoom-in" title="Zoom In">+</button>
<div class="zoom-level" id="zoom-level">100%</div>
<button class="zoom-btn" id="zoom-out" title="Zoom Out">−</button>
<button class="zoom-btn" id="fit-view" title="Fit to View">
<svg viewBox="0 0 24 24" fill="currentColor" style="width: 20px; height: 20px;">
<path d="M4,4H10V6H6V10H4V4M14,4H20V10H18V6H14V4M20,14V20H14V18H18V14H20M10,14V20H4V14H6V18H10V14H12V16H14V14H10Z"/>
</svg>
</button>
<button class="zoom-btn" id="auto-layout" title="Auto Layout">
<svg viewBox="0 0 24 24" fill="currentColor" style="width: 20px; height: 20px;">
<path d="M14,12V19.88C14.04,20.18 13.94,20.5 13.71,20.71C13.32,21.1 12.69,21.1 12.3,20.71L10.29,18.7L9.59,18L8.59,17H8.93C9.8,16.15 10.4,15.02 10.4,13.8C10.4,11.74 8.8,10.05 6.74,10C4.64,9.96 3,11.63 3,13.72C3,15.65 4.54,17.24 6.5,17.24C7.45,17.24 8.33,16.83 8.93,16.17H9.41L12.71,19.47C13.32,20.08 14.36,20.08 14.97,19.47C15.58,18.86 15.58,17.82 14.97,17.21L14,16.24V12H14M6.5,15.25C5.67,15.25 5,14.58 5,13.75C5,12.92 5.67,12.25 6.5,12.25C7.33,12.25 8,12.92 8,13.75C8,14.58 7.33,15.25 6.5,15.25Z"/>
</svg>
</button>
</div>
<!-- Node Inspection Panel -->
<div class="node-inspection-panel" id="node-panel">
<div class="panel-header">
<div class="node-identity">
<div class="node-icon" id="panel-node-icon"></div>
<div>
<h3 id="panel-node-name">Select a Node</h3>
<span class="node-type-badge" id="panel-node-type">-</span>
</div>
</div>
<div class="panel-actions">
<button class="panel-action-btn">✏️ Edit</button>
<button class="panel-action-btn">🧪 Test</button>
<button class="panel-action-btn close" id="close-panel">✕</button>
</div>
</div>
<div class="panel-tabs">
<button class="panel-tab active" data-tab="config">📋 Config</button>
<button class="panel-tab" data-tab="data">📊 Data</button>
<button class="panel-tab" data-tab="docs">📚 Docs</button>
</div>
<div class="panel-content" id="panel-content">
<!-- Content will be dynamically populated -->
</div>
</div>
<!-- Tooltip for hover information -->
<div class="node-tooltip" id="node-tooltip" style="display: none;"></div>
</div>
<script>
// Enhanced node icons with SVG support
const nodeIcons = {
'n8n-nodes-base.webhook': `<svg viewBox="0 0 24 24" fill="#ff6d5a"><path d="M12,2A3,3 0 0,1 15,5V11A3,3 0 0,1 12,14A3,3 0 0,1 9,11V5A3,3 0 0,1 12,2M19,11C19,14.53 16.39,17.44 13,17.93V21H11V17.93C7.61,17.44 5,14.53 5,11H7A5,5 0 0,0 12,16A5,5 0 0,0 17,11H19Z"/></svg>`,
'n8n-nodes-base.httpRequest': `<svg viewBox="0 0 24 24" fill="#7c3aed"><path d="M3,3H21V5H3V3M3,7H21V9H3V7M3,11H21V13H3V11M3,15H21V17H3V15M3,19H21V21H3V19Z"/></svg>`,
'n8n-nodes-base.if': `<svg viewBox="0 0 24 24" fill="#00c851"><path d="M3,7H21V9H3V7M3,11H21V13H3V11M3,15H21V17H3V15Z"/></svg>`,
'n8n-nodes-base.switch': `<svg viewBox="0 0 24 24" fill="#4a90e2"><path d="M3,7H21V9H3V7M3,11H21V13H3V11M3,15H21V17H3V15Z"/></svg>`,
'n8n-nodes-base.function': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M8,3C9.66,3 11,4.34 11,6V8.5C11,9.33 11.67,10 12.5,10C13.33,10 14,9.33 14,8.5V3H16V8.5A2.5,2.5 0 0,1 13.5,11A2.5,2.5 0 0,1 16,13.5V21H14V13.5C14,12.67 13.33,12 12.5,12C11.67,12 11,12.67 11,13.5V21H9V13.5C9,11.84 10.34,10.5 12,10.5C10.34,10.5 9,9.16 9,7.5V6C9,5.34 8.66,5 8,5C7.34,5 7,5.34 7,6V8H5V6C5,4.34 6.34,3 8,3Z"/></svg>`,
'n8n-nodes-base.set': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M3,17V19H9V17H3M3,5V7H13V5H3M13,21V19H21V17H13V15H11V21H13M7,9V11H3V13H7V15H9V9H7M21,13V11H11V13H21M15,9H17V7H21V5H17V3H15V9Z"/></svg>`,
'n8n-nodes-base.slack': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M8.5,5.5C8.5,6.88 7.38,8 6,8S3.5,6.88 3.5,5.5S4.62,3 6,3S8.5,4.12 8.5,5.5M11.75,8H14.25V20.5C14.25,21.88 13.13,23 11.75,23S9.25,21.88 9.25,20.5V8M18.5,8.5C19.88,8.5 21,9.62 21,11S19.88,13.5 18.5,13.5S16,12.38 16,11S17.12,8.5 18.5,8.5M8,14.25V11.75H20.5C21.88,11.75 23,12.87 23,14.25S21.88,16.75 20.5,16.75H8Z"/></svg>`,
'n8n-nodes-base.googleSheets': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M19,3H5C3.9,3 3,3.9 3,5V19A2,2 0 0,0 5,21H19A2,2 0 0,0 21,19V5C21,3.9 20.1,3 19,3M19,19H5V5H19V19Z"/></svg>`,
'n8n-nodes-base.postgres': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M12,3C7.58,3 4,4.79 4,7C4,9.21 7.58,11 12,11C16.42,11 20,9.21 20,7C20,4.79 16.42,3 12,3M4,9V12C4,14.21 7.58,16 12,16C16.42,16 20,14.21 20,12V9C20,11.21 16.42,13 12,13C7.58,13 4,11.21 4,9M4,14V17C4,19.21 7.58,21 12,21C16.42,21 20,19.21 20,17V14C20,16.21 16.42,18 12,18C7.58,18 4,16.21 4,14Z"/></svg>`,
'n8n-nodes-base.wait': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M12,20A7,7 0 0,1 5,13A7,7 0 0,1 12,6A7,7 0 0,1 19,13A7,7 0 0,1 12,20M12,4A9,9 0 0,0 3,13A9,9 0 0,0 12,22A9,9 0 0,0 21,13A9,9 0 0,0 12,4M12.5,8H11V14L15.75,16.85L16.5,15.62L12.5,13.25V8Z"/></svg>`,
'n8n-nodes-base.emailSend': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M20,8L12,13L4,8V6L12,11L20,6M20,4H4C2.89,4 2,4.89 2,6V18A2,2 0 0,0 4,20H20A2,2 0 0,0 22,18V6C22,4.89 21.1,4 20,4Z"/></svg>`,
'n8n-nodes-base.schedule': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M9,10V12H7V10H9M13,10V12H11V10H13M17,10V12H15V10H17M19,3A2,2 0 0,1 21,5V19A2,2 0 0,1 19,21H5C3.89,21 3,20.1 3,19V5A2,2 0 0,1 5,3H6V1H8V3H16V1H18V3H19M19,19V8H5V19H19M9,14V16H7V14H9M13,14V16H11V14H13M17,14V16H15V14H17Z"/></svg>`,
'n8n-nodes-base.loxone': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M10,20V14H14V20H19V12H22L12,3L2,12H5V20H10Z"/></svg>`,
'n8n-nodes-base.start': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M8,5.14V19.14L19,12.14L8,5.14Z"/></svg>`,
'n8n-nodes-base.manualTrigger': `<svg viewBox="0 0 24 24" fill="currentColor"><path d="M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M12,4A8,8 0 0,1 20,12A8,8 0 0,1 12,20A8,8 0 0,1 4,12A8,8 0 0,1 12,4M12,6A6,6 0 0,0 6,12A6,6 0 0,0 12,18A6,6 0 0,0 18,12A6,6 0 0,0 12,6Z"/></svg>`
};
const nodeTypes = {
'webhook': 'trigger',
'schedule': 'trigger',
'manualTrigger': 'trigger',
'start': 'trigger',
'if': 'if',
'switch': 'switch',
'httpRequest': 'action',
'function': 'action',
'set': 'action'
};
function createNode(nodeData) {
const node = document.createElement('div');
node.className = 'workflow-node';
// Determine node type for styling
const nodeType = nodeData.type.split('.').pop();
const typeClass = nodeTypes[nodeType] || 'action';
node.classList.add(typeClass);
// Set position
if (nodeData.position) {
node.style.left = nodeData.position[0] + 'px';
node.style.top = nodeData.position[1] + 'px';
console.log(`Node ${nodeData.name} positioned at (${nodeData.position[0]}, ${nodeData.position[1]})`);
} else {
// Simple auto-layout
const index = window.nodeIndex || 0;
window.nodeIndex = index + 1;
const x = 100 + (index % 4) * 250;
const y = 100 + Math.floor(index / 4) * 120;
node.style.left = x + 'px';
node.style.top = y + 'px';
console.log(`Node ${nodeData.name} auto-positioned at (${x}, ${y})`);
}
// Icon
const icon = nodeIcons[nodeData.type] || nodeIcons['n8n-nodes-base.function'];
// Enhanced content with better structure
node.innerHTML = `
<div class="node-header">
<div class="node-icon">${icon}</div>
<div class="node-content">
<div class="node-title">${nodeData.name}</div>
<div class="node-subtitle">${formatNodeType(nodeData.type)}</div>
</div>
</div>
`;
// Add connection points
addConnectionPoints(node);
// Make draggable
makeDraggable(node);
return node;
}
function formatNodeType(type) {
return type.split('.').pop().replace(/([A-Z])/g, ' $1').trim();
}
function addConnectionPoints(node) {
const nodeType = node.classList.contains('if') || node.classList.contains('switch') ? 'conditional' : 'regular';
// Add input connection point
const inputPoint = document.createElement('div');
inputPoint.className = 'connection-point input';
inputPoint.style.cssText = `
position: absolute;
left: -8px;
top: 50%;
transform: translateY(-50%);
width: 16px;
height: 16px;
border-radius: 50%;
background: #e5e7eb;
border: 2px solid #9ca3af;
`;
node.appendChild(inputPoint);
if (nodeType === 'conditional') {
// Add multiple output points for if/switch nodes
const trueOutput = document.createElement('div');
trueOutput.className = 'connection-point output output-true';
trueOutput.style.cssText = `
position: absolute;
right: -8px;
top: 35%;
transform: translateY(-50%);
width: 16px;
height: 16px;
border-radius: 50%;
background: #e5e7eb;
border: 2px solid #00c851;
`;
const falseOutput = document.createElement('div');
falseOutput.className = 'connection-point output output-false';
falseOutput.style.cssText = `
position: absolute;
right: -8px;
top: 65%;
transform: translateY(-50%);
width: 16px;
height: 16px;
border-radius: 50%;
background: #e5e7eb;
border: 2px solid #9ca3af;
`;
// Add labels
const trueLabel = document.createElement('div');
trueLabel.className = 'connection-label';
trueLabel.textContent = 'true';
trueLabel.style.cssText = `
position: absolute;
right: -50px;
top: 35%;
transform: translateY(-50%);
font-size: 10px;
color: #666;
background: white;
padding: 2px 4px;
border-radius: 3px;
border: 1px solid #ddd;
`;
const falseLabel = document.createElement('div');
falseLabel.className = 'connection-label';
falseLabel.textContent = 'false';
falseLabel.style.cssText = `
position: absolute;
right: -50px;
top: 65%;
transform: translateY(-50%);
font-size: 10px;
color: #666;
background: white;
padding: 2px 4px;
border-radius: 3px;
border: 1px solid #ddd;
`;
node.appendChild(trueOutput);
node.appendChild(falseOutput);
node.appendChild(trueLabel);
node.appendChild(falseLabel);
} else {
// Add single output connection point for regular nodes
const outputPoint = document.createElement('div');
outputPoint.className = 'connection-point output';
outputPoint.style.cssText = `
position: absolute;
right: -8px;
top: 50%;
transform: translateY(-50%);
width: 16px;
height: 16px;
border-radius: 50%;
background: #e5e7eb;
border: 2px solid #9ca3af;
`;
node.appendChild(outputPoint);
}
}
function drawConnections(connections, nodeElements) {
const svg = document.getElementById('connections');
if (!svg) {
console.error('SVG connections element not found!');
return;
}
// Clear existing paths
svg.querySelectorAll('path').forEach(path => path.remove());
// Ensure we have defs and arrow marker
let defs = svg.querySelector('defs');
if (!defs) {
defs = document.createElementNS('http://www.w3.org/2000/svg', 'defs');
svg.appendChild(defs);
}
if (!defs.querySelector('#arrow-marker')) {
const marker = createArrowMarker('arrow-marker');
defs.appendChild(marker);
}
Object.entries(connections).forEach(([sourceName, targets]) => {
if (targets.main && targets.main[0]) {
targets.main[0].forEach((target, index) => {
const sourceNode = nodeElements[sourceName];
const targetNode = nodeElements[target.node];
if (sourceNode && targetNode) {
console.log(`Drawing connection from ${sourceName} to ${target.node}`);
// Determine output type for conditional nodes
let outputType = 'main';
const isConditional = sourceNode.classList.contains('if') || sourceNode.classList.contains('switch');
if (isConditional) {
// Use target node name or connection index to determine output type
// This is a heuristic - in real n8n, this would be specified in the workflow data
if (target.type === 'main' && target.index === 0) {
outputType = 'true';
} else if (target.type === 'main' && target.index === 1) {
outputType = 'false';
} else {
// Fallback: use connection index or node name heuristics
if (index === 0 || target.node.toLowerCase().includes('success') ||
target.node.toLowerCase().includes('true') ||
target.node.toLowerCase().includes('yes')) {
outputType = 'true';
} else {
outputType = 'false';
}
}
}
const path = createConnectionPath(sourceNode, targetNode, outputType);
// Add tracking attribute for efficient updates
const pathId = `path-${sourceName}-${target.node}-${outputType}`;
path.setAttribute('data-connection', pathId);
path.setAttribute('data-output-type', outputType);
svg.appendChild(path);
}
});
}
});
}
function createConnectionPath(sourceNode, targetNode, outputType = 'main') {
// Get the actual positions of the nodes
const sourceLeft = parseFloat(sourceNode.style.left) || 0;
const sourceTop = parseFloat(sourceNode.style.top) || 0;
const targetLeft = parseFloat(targetNode.style.left) || 0;
const targetTop = parseFloat(targetNode.style.top) || 0;
// Get node dimensions
const sourceWidth = sourceNode.offsetWidth;
const sourceHeight = sourceNode.offsetHeight;
const targetHeight = targetNode.offsetHeight;
// Check if source node is conditional (if/switch)
const isConditional = sourceNode.classList.contains('if') || sourceNode.classList.contains('switch');
let x1, y1;
if (isConditional) {
// Use specific output port based on connection type
x1 = sourceLeft + sourceWidth;
if (outputType === 'true') {
y1 = sourceTop + sourceHeight * 0.35; // True output port
} else if (outputType === 'false') {
y1 = sourceTop + sourceHeight * 0.65; // False output port
} else {
// Default to true port if not specified
y1 = sourceTop + sourceHeight * 0.35;
}
} else {
// Regular nodes use center output
x1 = sourceLeft + sourceWidth;
y1 = sourceTop + sourceHeight / 2;
}
// Target connection point (always center for now)
const x2 = targetLeft;
const y2 = targetTop + targetHeight / 2;
console.log(`Connection points: (${x1}, ${y1}) -> (${x2}, ${y2}) [output: ${outputType}]`);
// Calculate bezier curve control points
const dx = x2 - x1;
const curveOffset = Math.max(Math.abs(dx) * 0.5, 80);
const cp1x = x1 + curveOffset;
const cp1y = y1;
const cp2x = x2 - curveOffset;
const cp2y = y2;
// Create the SVG path
const path = document.createElementNS('http://www.w3.org/2000/svg', 'path');
const pathData = `M ${x1} ${y1} C ${cp1x} ${cp1y}, ${cp2x} ${cp2y}, ${x2} ${y2}`;
path.setAttribute('d', pathData);
// Color code by output type
if (outputType === 'true') {
path.setAttribute('stroke', '#00c851');
} else if (outputType === 'false') {
path.setAttribute('stroke', '#ef4444');
} else {
path.setAttribute('stroke', '#6b7280');
}
path.setAttribute('stroke-width', '2');
path.setAttribute('fill', 'none');
path.setAttribute('marker-end', 'url(#arrow-marker)');
console.log(`Path data: ${pathData}`);
return path;
}
function createArrowMarker(id) {
const marker = document.createElementNS('http://www.w3.org/2000/svg', 'marker');
marker.setAttribute('id', id);
marker.setAttribute('markerWidth', '10');
marker.setAttribute('markerHeight', '10');
marker.setAttribute('refX', '8');
marker.setAttribute('refY', '3');
marker.setAttribute('orient', 'auto');
marker.setAttribute('markerUnits', 'strokeWidth');
const path = document.createElementNS('http://www.w3.org/2000/svg', 'path');
path.setAttribute('d', 'M0,0 L0,6 L9,3 z');
path.setAttribute('fill', '#9ca3af');
marker.appendChild(path);
return marker;
}
function applyAutoLayout(workflow) {
console.log('Applying advanced auto-layout algorithm...');
// Step 1: Build node dependency graph
const graph = buildDependencyGraph(workflow);
// Step 2: Categorize nodes by type and function
const nodeCategories = categorizeNodes(workflow.nodes);
// Step 3: Calculate hierarchical levels (left to right flow)
const levelData = calculateHierarchicalLevels(workflow, graph);
// Step 4: Optimize vertical positioning within each level
const optimizedLayout = optimizeVerticalLayout(levelData, workflow.connections, nodeCategories);
// Step 5: Post-process to minimize remaining crossings
const finalLayout = minimizeCrossings(optimizedLayout, workflow.connections, levelData);
// Step 6: Apply positions to nodes
applyOptimizedPositions(workflow.nodes, finalLayout);
console.log('Auto-layout complete:', finalLayout);
}
function buildDependencyGraph(workflow) {
const graph = {
incoming: {}, // node -> [nodes that connect to it]
outgoing: {} // node -> [nodes it connects to]
};
// Initialize
workflow.nodes.forEach(node => {
graph.incoming[node.name] = [];
graph.outgoing[node.name] = [];
});
// Build connections
Object.entries(workflow.connections).forEach(([sourceName, targets]) => {
if (targets.main && targets.main[0]) {
targets.main[0].forEach(target => {
graph.outgoing[sourceName].push(target.node);
graph.incoming[target.node].push(sourceName);
});
}
});
return graph;
}
function categorizeNodes(nodes) {
const categories = {
triggers: [], // Webhooks, schedules, manual triggers
processors: [], // Functions, conditions, transformations
actions: [], // HTTP requests, database operations
outputs: [] // Final endpoints, responses
};
nodes.forEach(node => {
const nodeType = node.type.toLowerCase();
const nodeName = node.name.toLowerCase();
if (nodeType.includes('webhook') || nodeType.includes('schedule') ||
nodeType.includes('trigger') || nodeType.includes('start') ||
nodeName.includes('webhook') || nodeName.includes('trigger')) {
categories.triggers.push(node.name);
} else if (nodeType.includes('function') || nodeType.includes('if') ||
nodeType.includes('switch') || nodeType.includes('set') ||
nodeName.includes('process') || nodeName.includes('calculate')) {
categories.processors.push(node.name);
} else if (nodeType.includes('http') || nodeType.includes('request') ||
nodeName.includes('request') || nodeName.includes('call')) {
categories.actions.push(node.name);
} else {
categories.outputs.push(node.name);
}
});
console.log('Node categories:', categories);
return categories;
}
function calculateHierarchicalLevels(workflow, graph) {
const levels = {};
const nodeToLevel = {};
// Find root nodes (no incoming connections)
const rootNodes = workflow.nodes.filter(node =>
graph.incoming[node.name].length === 0
).map(node => node.name);
console.log('Root nodes (triggers):', rootNodes);
// BFS to assign levels
const queue = rootNodes.map(node => ({ node, level: 0 }));
const visited = new Set();
while (queue.length > 0) {
const { node, level } = queue.shift();
if (visited.has(node)) continue;
visited.add(node);
// Assign node to level
if (!levels[level]) levels[level] = [];
levels[level].push(node);
nodeToLevel[node] = level;
// Add children to queue
graph.outgoing[node].forEach(childNode => {
if (!visited.has(childNode)) {
queue.push({ node: childNode, level: level + 1 });
}
});
}
// Handle orphaned nodes (no connections)
workflow.nodes.forEach(node => {
if (!visited.has(node.name)) {
const level = Object.keys(levels).length;
if (!levels[level]) levels[level] = [];
levels[level].push(node.name);
nodeToLevel[node.name] = level;
}
});
return { levels, nodeToLevel };
}
function optimizeVerticalLayout(levelData, connections, categories) {
const { levels, nodeToLevel } = levelData;
const layout = {};
// Configuration - Increased spacing for better readability
const LEVEL_WIDTH = 450;
const NODE_HEIGHT = 120;
const MIN_VERTICAL_SPACING = 180;
const START_X = 100;
const START_Y = 100;
Object.entries(levels).forEach(([levelIndex, nodeNames]) => {
const level = parseInt(levelIndex);
const x = START_X + level * LEVEL_WIDTH;
// Sort nodes within level to minimize crossings
const sortedNodes = sortNodesInLevel(nodeNames, connections, nodeToLevel, categories);
// Calculate vertical positions with proper spacing
sortedNodes.forEach((nodeName, index) => {
const y = START_Y + index * MIN_VERTICAL_SPACING;
layout[nodeName] = {
x: x,
y: y,
level: level,
index: index
};
});
});
return layout;
}
function sortNodesInLevel(nodeNames, connections, nodeToLevel, categories) {
// Advanced sorting to minimize line crossings