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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 | 'use client' import { useEffect, useRef, useState } from 'react' import { css } from '../../../styled-system/css' import type { StateSnapshot } from '../../lib/flowcharts/schema' interface DebugMermaidDiagramProps { /** Raw mermaid content */ mermaidContent: string /** Current node ID to highlight (amber fill - walker progress) */ currentNodeId?: string /** Snapshots from the walk to highlight - extracts both path nodes and edge info */ highlightedSnapshots?: StateSnapshot[] /** Focused node ID within the path (strong cyan - the specific step being hovered) */ highlightedNodeId?: string /** Callback when regeneration is requested (shown when there's a render error) */ onRegenerate?: () => void /** Whether regeneration is currently in progress */ isRegenerating?: boolean } /** * DebugMermaidDiagram - Renders a mermaid flowchart with the current node highlighted. * * Only rendered when visual debug mode is enabled. * Uses mermaid.js to render the flowchart SVG with custom styling for the current node. */ export function DebugMermaidDiagram({ mermaidContent, currentNodeId, highlightedSnapshots, highlightedNodeId, onRegenerate, isRegenerating, }: DebugMermaidDiagramProps) { const containerRef = useRef<HTMLDivElement>(null) const [error, setError] = useState<string | null>(null) const [isLoading, setIsLoading] = useState(true) useEffect(() => { let mounted = true async function renderDiagram() { if (!containerRef.current) return setIsLoading(true) setError(null) try { // Dynamic import to avoid SSR issues const mermaid = (await import('mermaid')).default // Initialize mermaid with custom config mermaid.initialize({ startOnLoad: false, theme: 'default', securityLevel: 'loose', flowchart: { useMaxWidth: true, htmlLabels: true, curve: 'basis', }, }) // Generate unique ID for this render (before try so it's accessible in catch) const id = `mermaid-debug-${Date.now()}` // Sanitize content: convert escaped quotes that might have leaked through JSON parsing const sanitizedContent = mermaidContent .replace(/\\"/g, "'") // Convert \" to ' .replace(/\\'/g, "'") // Convert \' to ' // Add style definitions for current node highlighting (walker progress) let highlightStyles = '' if (currentNodeId) { highlightStyles += `\n style ${currentNodeId} fill:#fbbf24,stroke:#d97706,stroke-width:4px,color:#000` } const contentWithHighlight = sanitizedContent + highlightStyles // Render the diagram const { svg } = await mermaid.render(id, contentWithHighlight) if (mounted && containerRef.current) { containerRef.current.innerHTML = svg // Make the SVG responsive const svgElement = containerRef.current.querySelector('svg') if (svgElement) { svgElement.style.maxWidth = '100%' svgElement.style.height = 'auto' // Apply path and node highlighting post-render // Extract path info from snapshots const highlightedPath = highlightedSnapshots?.map((s) => s.nodeId) || [] const hasPathHighlight = highlightedPath.length > 0 const hasNodeHighlight = highlightedNodeId && highlightedNodeId !== currentNodeId if (hasPathHighlight || hasNodeHighlight) { // Dim all nodes when we have any highlighting const allNodes = svgElement.querySelectorAll('[id^="flowchart-"]') allNodes.forEach((node) => { ;(node as SVGElement).style.opacity = '0.5' }) // Dim all edge paths (the lines) - use multiple selectors for robustness // Mermaid v11+ uses .flowchart-link, older versions use .edgePath path const allEdgePathElements = svgElement.querySelectorAll( '.flowchart-link, .edgePath path, .edgePaths path' ) allEdgePathElements.forEach((edge) => { ;(edge as SVGElement).style.opacity = '0.2' ;(edge as SVGElement).style.stroke = '#9ca3af' // gray-400 }) // Dim all edge labels const allEdgeLabels = svgElement.querySelectorAll('.edgeLabel') allEdgeLabels.forEach((label) => { ;(label as SVGElement).style.opacity = '0.2' }) // Get edge containers for matching // Mermaid v11+ uses .flowchart-link class for edge paths // inside a container with class .edgePaths (plural) const allEdgePaths = svgElement.querySelectorAll('.flowchart-link') const edgePathElements = Array.from(allEdgePaths) const edgeLabelElements = Array.from(allEdgeLabels) // Collect path nodes for highlighting const pathNodeSet = new Set(highlightedPath.filter((n) => n !== 'initial')) /** * Build a graph from SVG edges for BFS traversal. * Extracts from/to from L_FROM_TO_INDEX format. */ const mermaidGraph = new Map< string, Array<{ to: string; edgeId: string; element: Element }> >() const allSvgNodeIds = new Set<string>() for (const edge of edgePathElements) { const svgEdgeId = edge.id if (!svgEdgeId) continue // Parse L_FROM_TO_INDEX format if (svgEdgeId.startsWith('L_')) { const withoutPrefix = svgEdgeId.slice(2) // Remove 'L_' const lastUnderscore = withoutPrefix.lastIndexOf('_') if (lastUnderscore > 0) { const fromTo = withoutPrefix.slice(0, lastUnderscore) // Remove '_INDEX' // Find all node elements to know valid node IDs const allNodeElements = svgElement.querySelectorAll('[id^="flowchart-"]') const nodeIds = new Set( Array.from(allNodeElements) .map((e) => e.id.match(/flowchart-([^-]+)-/)?.[1]) .filter(Boolean) as string[] ) // Try to split FROM_TO by finding a valid node ID prefix for (const nodeId of nodeIds) { if (fromTo.startsWith(`${nodeId}_`)) { const toNode = fromTo.slice(nodeId.length + 1) if (nodeIds.has(toNode)) { allSvgNodeIds.add(nodeId) allSvgNodeIds.add(toNode) if (!mermaidGraph.has(nodeId)) { mermaidGraph.set(nodeId, []) } mermaidGraph .get(nodeId)! .push({ to: toNode, edgeId: svgEdgeId, element: edge }) break } } } } } } /** * BFS to find path from `start` to `end` through mermaid graph. * Returns edges and intermediate nodes on the path. * * If direct path not found (due to phase boundaries), falls back to * finding all nodes reachable from start + all nodes that can reach end. */ const findPathBFS = ( start: string, end: string ): { edges: Element[]; intermediateNodes: string[] } => { if (start === end) return { edges: [], intermediateNodes: [] } // Try direct BFS first const queue: Array<{ node: string path: Array<{ to: string; edgeId: string; element: Element }> }> = [{ node: start, path: [] }] const visited = new Set<string>([start]) while (queue.length > 0) { const { node, path } = queue.shift()! const neighbors = mermaidGraph.get(node) || [] for (const neighbor of neighbors) { if (neighbor.to === end) { // Found the path! const fullPath = [...path, neighbor] return { edges: fullPath.map((p) => p.element), intermediateNodes: fullPath.slice(0, -1).map((p) => p.to), } } if (!visited.has(neighbor.to)) { visited.add(neighbor.to) queue.push({ node: neighbor.to, path: [...path, neighbor] }) } } } // Direct path not found - likely a phase boundary // Find all reachable from start (forward BFS) const reachableFromStart = new Set<string>([start]) const edgesFromStart: Element[] = [] let frontier = [start] while (frontier.length > 0) { const node = frontier.shift()! for (const neighbor of mermaidGraph.get(node) || []) { if (!reachableFromStart.has(neighbor.to)) { reachableFromStart.add(neighbor.to) edgesFromStart.push(neighbor.element) frontier.push(neighbor.to) } } } // Build reverse graph for backward BFS const reverseGraph = new Map<string, Array<{ from: string; element: Element }>>() for (const [from, neighbors] of mermaidGraph) { for (const n of neighbors) { if (!reverseGraph.has(n.to)) reverseGraph.set(n.to, []) reverseGraph.get(n.to)!.push({ from, element: n.element }) } } // Find all that can reach end (backward BFS) const canReachEnd = new Set<string>([end]) const edgesToEnd: Element[] = [] frontier = [end] while (frontier.length > 0) { const node = frontier.shift()! for (const neighbor of reverseGraph.get(node) || []) { if (!canReachEnd.has(neighbor.from)) { canReachEnd.add(neighbor.from) edgesToEnd.push(neighbor.element) frontier.push(neighbor.from) } } } // Combine: nodes reachable from start + nodes that can reach end // minus start and end themselves const intermediateNodes = new Set<string>() for (const node of reachableFromStart) { if (node !== start && node !== end) intermediateNodes.add(node) } for (const node of canReachEnd) { if (node !== start && node !== end) intermediateNodes.add(node) } return { edges: [...edgesFromStart, ...edgesToEnd], intermediateNodes: [...intermediateNodes], } } // Find focused node's neighbors in the path for edge highlighting let focusedPrevNode: string | undefined let focusedNextNode: string | undefined if (highlightedSnapshots && highlightedNodeId) { for (let i = 0; i < highlightedSnapshots.length; i++) { const snapshot = highlightedSnapshots[i] // If this snapshot's next node is the focused node, this is the predecessor if (snapshot.nextNodeId === highlightedNodeId && snapshot.nodeId !== 'initial') { focusedPrevNode = snapshot.nodeId } // If this snapshot IS the focused node, its next is the successor if (snapshot.nodeId === highlightedNodeId) { focusedNextNode = snapshot.nextNodeId } } } // Find edges leading to/from focused node (using BFS to handle intermediates) const focusedIncomingEdges = new Set<Element>() const focusedOutgoingEdges = new Set<Element>() if (focusedPrevNode && highlightedNodeId) { const { edges } = findPathBFS(focusedPrevNode, highlightedNodeId) edges.forEach((e) => focusedIncomingEdges.add(e)) } if (highlightedNodeId && focusedNextNode) { const { edges } = findPathBFS(highlightedNodeId, focusedNextNode) edges.forEach((e) => focusedOutgoingEdges.add(e)) } // Highlight path nodes and edges if (hasPathHighlight) { // Start with path nodes from simulation const nodesToHighlight = new Set(highlightedPath.filter((n) => n !== 'initial')) const edgesToHighlight = new Set<Element>() // For each consecutive pair of path nodes, find the path through mermaid graph const pathArray = highlightedPath.filter((n) => n !== 'initial') for (let i = 0; i < pathArray.length - 1; i++) { const from = pathArray[i] const to = pathArray[i + 1] const { edges, intermediateNodes } = findPathBFS(from, to) // Add intermediate nodes for (const node of intermediateNodes) { nodesToHighlight.add(node) } // Add edges for (const edge of edges) { edgesToHighlight.add(edge) } } // Highlight all nodes (path + intermediate) for (const nodeId of nodesToHighlight) { const nodeElement = svgElement.querySelector(`[id*="flowchart-${nodeId}-"]`) if (nodeElement) { const svgNode = nodeElement as SVGElement svgNode.style.opacity = '1' // Add light cyan border const shape = nodeElement.querySelector( 'rect, polygon, circle, ellipse, path' ) as SVGElement | null if (shape) { shape.style.stroke = '#06b6d4' // cyan-500 shape.style.strokeWidth = '3px' shape.setAttribute('stroke', '#06b6d4') shape.setAttribute('stroke-width', '3') shape.setAttribute('vector-effect', 'non-scaling-stroke') } } } // Highlight edges edgesToHighlight.forEach((edgeElement) => { const svgEdge = edgeElement as SVGElement svgEdge.style.opacity = '1' svgEdge.style.stroke = '#06b6d4' // cyan-500 svgEdge.style.strokeWidth = '3px' svgEdge.setAttribute('stroke', '#06b6d4') svgEdge.setAttribute('stroke-width', '3') svgEdge.setAttribute('vector-effect', 'non-scaling-stroke') }) } // Highlight the focused node more strongly (overrides path highlight) if (hasNodeHighlight) { const nodeElement = svgElement.querySelector( `[id*="flowchart-${highlightedNodeId}-"]` ) if (nodeElement) { const svgNode = nodeElement as SVGElement svgNode.style.opacity = '1' // Add thick cyan border with non-scaling stroke const shape = nodeElement.querySelector( 'rect, polygon, circle, ellipse, path' ) as SVGElement | null if (shape) { shape.style.stroke = '#0891b2' // cyan-600 shape.style.strokeWidth = '5px' shape.setAttribute('stroke', '#0891b2') shape.setAttribute('stroke-width', '5') shape.setAttribute('vector-effect', 'non-scaling-stroke') } } // Highlight edges to/from focused node more strongly focusedIncomingEdges.forEach((edgeElement) => { const svgEdge = edgeElement as SVGElement svgEdge.style.opacity = '1' svgEdge.style.stroke = '#0891b2' // cyan-600 svgEdge.style.strokeWidth = '5px' svgEdge.setAttribute('stroke', '#0891b2') svgEdge.setAttribute('stroke-width', '5') }) focusedOutgoingEdges.forEach((edgeElement) => { const svgEdge = edgeElement as SVGElement svgEdge.style.opacity = '1' svgEdge.style.stroke = '#22d3ee' // cyan-400 svgEdge.style.strokeWidth = '4px' svgEdge.setAttribute('stroke', '#22d3ee') svgEdge.setAttribute('stroke-width', '4') }) } } } } // Clean up the render element (mermaid leaves these in document.body) const renderElement = document.getElementById(id) if (renderElement && renderElement.parentElement === document.body) { renderElement.remove() } } catch (err) { console.error('Mermaid render error:', err) if (mounted) { setError(err instanceof Error ? err.message : 'Failed to render diagram') } } finally { if (mounted) { setIsLoading(false) } } } renderDiagram() return () => { mounted = false } }, [mermaidContent, currentNodeId, highlightedSnapshots, highlightedNodeId]) if (error) { return ( <div data-element="mermaid-error" className={css({ padding: '6', backgroundColor: { base: 'red.50', _dark: 'red.900/30' }, borderRadius: 'lg', display: 'flex', flexDirection: 'column', alignItems: 'center', gap: '4', })} > <div className={css({ color: { base: 'red.700', _dark: 'red.300' }, fontSize: 'sm', textAlign: 'center', })} > <strong>Failed to render flowchart</strong> <br /> <span className={css({ fontFamily: 'mono', fontSize: 'xs' })}>{error}</span> </div> {onRegenerate && ( <button data-action="regenerate-from-error" onClick={onRegenerate} disabled={isRegenerating} className={css({ paddingY: '3', paddingX: '6', borderRadius: 'lg', backgroundColor: { base: 'blue.600', _dark: 'blue.500' }, color: 'white', fontWeight: 'medium', border: 'none', cursor: 'pointer', _hover: { backgroundColor: { base: 'blue.700', _dark: 'blue.600' }, }, _disabled: { opacity: 0.5, cursor: 'not-allowed', }, })} > {isRegenerating ? 'Regenerating...' : '🔄 Regenerate Flowchart'} </button> )} <p className={css({ color: { base: 'gray.500', _dark: 'gray.400' }, fontSize: 'xs', textAlign: 'center', maxWidth: '300px', })} > The AI sometimes generates invalid mermaid syntax. Regenerating will create a new flowchart from scratch. </p> </div> ) } return ( <div data-testid="debug-mermaid-diagram" className={css({ padding: '4', backgroundColor: { base: 'white', _dark: 'gray.800' }, borderRadius: 'lg', border: '1px solid', borderColor: { base: 'gray.200', _dark: 'gray.700' }, height: '100%', minHeight: 0, display: 'flex', flexDirection: 'column', })} > {isLoading && ( <div className={css({ textAlign: 'center', padding: '4', color: { base: 'gray.500', _dark: 'gray.400' }, fontSize: 'sm', })} > Loading flowchart... </div> )} <div ref={containerRef} className={css({ display: isLoading ? 'none' : 'flex', flex: 1, minHeight: 0, overflow: 'auto', alignItems: 'center', justifyContent: 'center', '& svg': { maxWidth: '100%', maxHeight: '100%', height: 'auto', }, })} /> </div> ) } |