Norn/web/epiphany-graph-viewer/src/lib/EpiphanyGraphViewer.tsx
2026-05-18 11:01:00 +01:00

1749 lines
54 KiB
TypeScript

import {
startTransition,
useEffect,
useLayoutEffect,
useRef,
useState,
type ReactNode,
type PointerEvent as ReactPointerEvent,
} from "react";
import { layoutEpiphanyGraphs } from "./layout";
import type {
EpiphanyCodeRef,
EpiphanyGraphLink,
EpiphanyGraphViewerProps,
EpiphanyValidationIssue,
GraphKey,
GraphLayout,
PositionedEdge,
PositionedNode,
PositionedPoint,
ViewerSelection,
} from "./types";
import { validateEpiphanyGraphsState } from "./validation";
type ViewTransform = {
x: number;
y: number;
scale: number;
userMoved: boolean;
};
const PANEL_SURFACE = "rgba(7, 16, 30, 0.76)";
const PANEL_BORDER = "1px solid rgba(148, 163, 184, 0.18)";
export function EpiphanyGraphViewer({
state,
initialGraph = "architecture",
selection: controlledSelection,
style,
className,
title = "Epiphany Graph Viewer",
graphLabels,
graphDescriptions,
layoutAlgorithms,
sidebar,
sidebarWidth = 330,
showSidebar = true,
overlayPanels = false,
viewportBackdrop,
viewportBackground,
focusSelection = false,
expandedNode,
onExpandedNodeClick,
onSelectionChange,
onCodeRefSelect,
}: EpiphanyGraphViewerProps) {
const [activeGraphKey, setActiveGraphKey] = useState<GraphKey>(initialGraph);
const [localSelection, setLocalSelection] = useState<ViewerSelection | null>(null);
const [layouts, setLayouts] = useState<Record<GraphKey, GraphLayout> | null>(null);
const [issues, setIssues] = useState<EpiphanyValidationIssue[]>([]);
const [status, setStatus] = useState<"loading" | "ready" | "error">("loading");
const [errorMessage, setErrorMessage] = useState<string | null>(null);
const [viewportSize, setViewportSize] = useState({ width: 0, height: 0 });
const [transforms, setTransforms] = useState<Record<GraphKey, ViewTransform>>({
architecture: { x: 0, y: 0, scale: 1, userMoved: false },
dataflow: { x: 0, y: 0, scale: 1, userMoved: false },
});
const viewportRef = useRef<HTMLDivElement | null>(null);
const wheelStateRef = useRef({
activeGraphKey,
transforms,
});
const dragRef = useRef<{
active: boolean;
originX: number;
originY: number;
startX: number;
startY: number;
} | null>(null);
const selection = controlledSelection === undefined ? localSelection : controlledSelection;
const layoutAlgorithmKey = `${layoutAlgorithms?.architecture ?? ""}|${layoutAlgorithms?.dataflow ?? ""}`;
const updateSelection = (nextSelection: ViewerSelection | null) => {
if (controlledSelection === undefined) {
setLocalSelection(nextSelection);
}
onSelectionChange?.(nextSelection);
};
useEffect(() => {
if (!controlledSelection?.graphKey) {
return;
}
setActiveGraphKey(controlledSelection.graphKey);
}, [controlledSelection?.graphKey]);
useEffect(() => {
let cancelled = false;
setStatus("loading");
setErrorMessage(null);
setIssues(validateEpiphanyGraphsState(state));
layoutEpiphanyGraphs(
state,
layoutAlgorithms,
viewportSize.width > 0 && viewportSize.height > 0 ? viewportSize : undefined,
)
.then((nextLayouts) => {
if (cancelled) {
return;
}
setLayouts(nextLayouts);
setStatus("ready");
})
.catch((error) => {
if (cancelled) {
return;
}
setStatus("error");
setErrorMessage(error instanceof Error ? error.message : String(error));
});
return () => {
cancelled = true;
};
}, [layoutAlgorithmKey, state, viewportSize.height, viewportSize.width]);
useLayoutEffect(() => {
const element = viewportRef.current;
if (!element) {
return;
}
const observer = new ResizeObserver(([entry]) => {
const box = entry.contentRect;
setViewportSize({
width: box.width,
height: box.height,
});
});
observer.observe(element);
return () => observer.disconnect();
}, []);
useEffect(() => {
wheelStateRef.current = {
activeGraphKey,
transforms,
};
}, [activeGraphKey, transforms]);
useEffect(() => {
const element = viewportRef.current;
if (!element) {
return;
}
const onWheel = (event: WheelEvent) => {
const {
activeGraphKey: currentGraphKey,
transforms: currentTransforms,
} = wheelStateRef.current;
handleNativeWheel(
event,
element,
currentGraphKey,
currentTransforms,
setTransforms,
);
};
element.addEventListener("wheel", onWheel, { passive: false });
return () => element.removeEventListener("wheel", onWheel);
}, []);
useEffect(() => {
if (!layouts || viewportSize.width <= 0 || viewportSize.height <= 0) {
return;
}
setTransforms((current) => ({
architecture: current.architecture.userMoved
? current.architecture
: fitGraphToViewport(layouts.architecture, viewportSize.width, viewportSize.height),
dataflow: current.dataflow.userMoved
? current.dataflow
: fitGraphToViewport(layouts.dataflow, viewportSize.width, viewportSize.height),
}));
}, [layouts, viewportSize.height, viewportSize.width]);
const activeLayout = layouts?.[activeGraphKey] ?? null;
const activeTransform = transforms[activeGraphKey];
const compactGraph = activeLayout ? isCompactGraphLayout(activeLayout) : false;
const selectedNode =
selection?.kind === "node" && selection.graphKey === activeGraphKey && activeLayout
? activeLayout.nodes.find((node) => node.id === selection.nodeId) ?? null
: null;
const selectedEdge =
selection?.kind === "edge" && selection.graphKey === activeGraphKey && activeLayout
? activeLayout.edges.find((edge) => edge.resolvedId === selection.edgeId) ?? null
: null;
const labels = {
architecture: graphLabels?.architecture ?? "Architecture",
dataflow: graphLabels?.dataflow ?? "Dataflow",
};
const descriptions = {
architecture:
graphDescriptions?.architecture ??
"Architecture nodes describe durable system parts: stores, renderers, promoters, bridges, and shells.",
dataflow:
graphDescriptions?.dataflow ??
"Dataflow nodes describe the movement of evidence and structure through the pipeline: observations, proposals, validation, fragments, turns.",
};
const neighboringIds = new Set<string>();
if (selectedNode && activeLayout) {
for (const edge of activeLayout.edges) {
if (edge.source_id === selectedNode.id) {
neighboringIds.add(edge.target_id);
}
if (edge.target_id === selectedNode.id) {
neighboringIds.add(edge.source_id);
}
}
}
const linkedNodes = selectedNode
? findLinkedNodes(selectedNode.id, activeGraphKey, state)
: [];
const expandedNodeMatches =
Boolean(expandedNode) &&
Boolean(selectedNode) &&
expandedNode?.graphKey === activeGraphKey &&
expandedNode.nodeId === selectedNode?.id;
const expandedNodeMetrics =
expandedNodeMatches && selectedNode && viewportSize.width > 0 && viewportSize.height > 0
? expandedNodeViewportMetrics(selectedNode, activeTransform, viewportSize.width, viewportSize.height)
: null;
useEffect(() => {
if (!focusSelection || !selectedNode || viewportSize.width <= 0 || viewportSize.height <= 0) {
return;
}
const targetScale = focusedNodeScale(selectedNode, viewportSize.width, viewportSize.height);
const center = nodeCenter(selectedNode);
setTransforms((current) => ({
...current,
[activeGraphKey]: {
x: viewportSize.width / 2 - center.x * targetScale,
y: viewportSize.height / 2 - center.y * targetScale,
scale: targetScale,
userMoved: true,
},
}));
}, [
activeGraphKey,
focusSelection,
selectedNode?.id,
selectedNode?.x,
selectedNode?.y,
viewportSize.height,
viewportSize.width,
]);
return (
<section
aria-label={title}
className={className}
style={{
display: "grid",
gridTemplateColumns: overlayPanels
? "minmax(0, 1fr)"
: `minmax(0, 1fr) ${typeof sidebarWidth === "number" ? `${sidebarWidth}px` : sidebarWidth}`,
gap: 16,
minHeight: overlayPanels ? "100vh" : "72vh",
position: "relative",
overflow: overlayPanels ? "hidden" : undefined,
...style,
}}
>
<div
style={{
display: "grid",
gridTemplateRows: overlayPanels ? "1fr" : "auto 1fr",
gap: 12,
minHeight: 0,
}}
>
<header
className={overlayPanels ? "epiphany-graph-overlay-panel" : undefined}
style={{
display: "flex",
flexWrap: "wrap",
alignItems: "center",
justifyContent: "space-between",
gap: 12,
padding: "14px 16px",
borderRadius: 22,
background: PANEL_SURFACE,
border: PANEL_BORDER,
boxShadow: "0 18px 48px rgba(0, 0, 0, 0.26)",
backdropFilter: "blur(14px)",
...(overlayPanels
? {
position: "absolute",
top: 16,
left: 16,
right: 16,
zIndex: 6,
}
: {}),
}}
>
<div style={{ display: "grid", gap: 6 }}>
<div
style={{
display: "inline-flex",
gap: 8,
alignItems: "center",
color: "#9fb3c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
<span>{title}</span>
<span style={{ color: "#5eead4" }}>{status}</span>
</div>
<div style={{ display: "flex", gap: 8, flexWrap: "wrap" }}>
<GraphTab
active={activeGraphKey === "architecture"}
label={labels.architecture}
count={state.architecture.nodes.length}
onClick={() =>
startTransition(() => {
setActiveGraphKey("architecture");
if (selection?.graphKey && selection.graphKey !== "architecture") {
updateSelection(null);
}
})
}
/>
<GraphTab
active={activeGraphKey === "dataflow"}
label={labels.dataflow}
count={state.dataflow.nodes.length}
onClick={() =>
startTransition(() => {
setActiveGraphKey("dataflow");
if (selection?.graphKey && selection.graphKey !== "dataflow") {
updateSelection(null);
}
})
}
/>
<Pill label="Links" value={String(state.links.length)} accent="#f9a8d4" />
<Pill label="Issues" value={String(issues.length)} accent={issues.length ? "#fbbf24" : "#86efac"} />
</div>
</div>
<div style={{ display: "flex", gap: 8, flexWrap: "wrap", justifyContent: "flex-end" }}>
<ActionButton onClick={() => nudgeZoom(activeGraphKey, 1.18, setTransforms)}>+</ActionButton>
<ActionButton onClick={() => nudgeZoom(activeGraphKey, 1 / 1.18, setTransforms)}>-</ActionButton>
<ActionButton
onClick={() => {
if (!activeLayout || viewportSize.width <= 0 || viewportSize.height <= 0) {
return;
}
setTransforms((current) => ({
...current,
[activeGraphKey]: fitGraphToViewport(
activeLayout,
viewportSize.width,
viewportSize.height,
),
}));
}}
>
Reset
</ActionButton>
</div>
</header>
<div
ref={viewportRef}
style={{
position: "relative",
minHeight: overlayPanels ? "100vh" : 540,
overflow: "hidden",
overscrollBehavior: "contain",
touchAction: "none",
borderRadius: overlayPanels ? 0 : 28,
background: viewportBackground ?? (
activeGraphKey === "architecture"
? "radial-gradient(circle at top left, rgba(8, 145, 178, 0.22), transparent 38%), linear-gradient(160deg, #08111e 0%, #0c1624 46%, #11192c 100%)"
: "radial-gradient(circle at top right, rgba(244, 63, 94, 0.18), transparent 34%), linear-gradient(160deg, #0b1018 0%, #15111c 44%, #1a0d18 100%)"
),
border: overlayPanels ? "none" : PANEL_BORDER,
boxShadow: overlayPanels ? "none" : "0 18px 54px rgba(0, 0, 0, 0.3)",
}}
>
{viewportBackdrop}
<div
className={overlayPanels ? "epiphany-graph-overlay-panel" : undefined}
style={{
position: "absolute",
top: overlayPanels ? 102 : 14,
left: 14,
zIndex: 2,
display: "grid",
gap: 6,
padding: "10px 12px",
borderRadius: 18,
background: "rgba(5, 10, 22, 0.7)",
border: "1px solid rgba(148, 163, 184, 0.16)",
color: "#b5c5d8",
fontSize: 12,
maxWidth: 260,
pointerEvents: "none",
}}
>
<div style={{ fontWeight: 700, color: "#e5eef8" }}>
{labels[activeGraphKey]} graph
</div>
<div>Wheel to zoom. Drag the void to pan. Click something interesting and the side panel stops being decorative.</div>
</div>
{status === "loading" && <StageMessage tone="#67e8f9">Laying out the graph. ELK is thinking noble thoughts.</StageMessage>}
{status === "error" && <StageMessage tone="#fca5a5">{errorMessage ?? "Layout failed."}</StageMessage>}
{status === "ready" && activeLayout && (
<svg
width="100%"
height="100%"
viewBox={`0 0 ${viewportSize.width || 1} ${viewportSize.height || 1}`}
onPointerDown={(event) =>
handlePointerDown(event, activeTransform, dragRef)
}
onPointerMove={(event) =>
handlePointerMove(event, activeGraphKey, dragRef, setTransforms)
}
onPointerUp={() => handlePointerUp(dragRef)}
onPointerLeave={() => handlePointerUp(dragRef)}
onClick={(event) => {
if (event.target === event.currentTarget) {
updateSelection(null);
}
}}
style={{ width: "100%", height: "100%", display: "block", cursor: dragRef.current?.active ? "grabbing" : "grab" }}
>
<defs>
<filter id="nodeGlow" x="-60%" y="-60%" width="220%" height="220%">
<feDropShadow dx="0" dy="0" stdDeviation="9" floodColor="rgba(34, 211, 238, 0.38)" />
</filter>
<filter id="selectedGlow" x="-60%" y="-60%" width="220%" height="220%">
<feDropShadow dx="0" dy="0" stdDeviation="14" floodColor="rgba(253, 224, 71, 0.46)" />
</filter>
</defs>
<g transform={`translate(${activeTransform.x} ${activeTransform.y}) scale(${activeTransform.scale})`}>
{renderBackdropGrid(activeLayout, activeGraphKey)}
{activeLayout.edges.map((edge) => {
const isSelected = selectedEdge?.resolvedId === edge.resolvedId;
const isConnected =
selectedNode &&
(edge.source_id === selectedNode.id || edge.target_id === selectedNode.id);
return (
<g key={edge.resolvedId}>
<path
d={edge.path}
fill="none"
stroke="transparent"
strokeWidth={18}
onClick={(event) => {
event.stopPropagation();
updateSelection({
kind: "edge",
graphKey: activeGraphKey,
edgeId: edge.resolvedId,
});
}}
/>
<path
d={edge.path}
fill="none"
stroke={edgeColor(activeGraphKey, isSelected, isConnected)}
strokeWidth={isSelected ? 3.4 : isConnected ? 2.6 : 1.9}
strokeOpacity={isSelected ? 0.94 : isConnected ? 0.76 : 0.35}
strokeLinecap="round"
strokeLinejoin="round"
vectorEffect="non-scaling-stroke"
/>
{(isSelected || isConnected || (!compactGraph && activeTransform.scale > 1.75)) &&
edge.label?.trim() && (
<g
transform={`translate(${edge.midpoint.x} ${edge.midpoint.y})`}
pointerEvents="none"
opacity={
isSelected || isConnected
? 1
: fadeBetween(activeTransform.scale, 1.75, 2.05)
}
>
<rect
x={-44}
y={-12}
width={88}
height={20}
rx={10}
fill="rgba(5, 10, 22, 0.82)"
stroke="rgba(148, 163, 184, 0.2)"
vectorEffect="non-scaling-stroke"
/>
<text
x={0}
y={3}
textAnchor="middle"
fill="#dbe7f4"
fontSize={9.5}
fontWeight={700}
>
{edge.label}
</text>
</g>
)}
</g>
);
})}
{activeLayout.nodes.map((node) => {
const isSelected = selectedNode?.id === node.id;
const isNeighbor = neighboringIds.has(node.id);
const emphasis = nodeOpacity(node, selectedNode, isNeighbor);
const copyLayout = buildNodeCopyLayout(node);
const clipId = `node-clip-${safeDomId(activeGraphKey)}-${safeDomId(node.id)}`;
const badgeRadius = Math.max(6, Math.min(12, node.width / 4, node.height / 3));
const badgeX = Math.max(badgeRadius + 4, Math.min(20, node.width / 2));
const badgeY = node.height < 40 ? node.height / 2 : 20;
const statusText = node.status?.trim() ?? "";
const showStatus = Boolean(statusText) && node.width >= 176 && node.height >= 72;
const showLinkCount = node.linkCount > 0 && node.width >= 150 && node.height >= 86;
const titleX = badgeX + badgeRadius + 14;
const titleY = node.height < 76 ? node.height / 2 + 4 : 26;
return (
<g
key={node.id}
transform={`translate(${node.x} ${node.y})`}
opacity={emphasis}
onClick={(event) => {
event.stopPropagation();
updateSelection({
kind: "node",
graphKey: activeGraphKey,
nodeId: node.id,
});
}}
style={{ cursor: "pointer" }}
>
<rect
x={0}
y={0}
width={node.width}
height={node.height}
rx={26}
fill={node.fill}
stroke={node.stroke}
strokeWidth={isSelected ? 2.8 : isNeighbor ? 2.1 : 1.4}
vectorEffect="non-scaling-stroke"
filter={isSelected ? "url(#selectedGlow)" : "url(#nodeGlow)"}
/>
<clipPath id={clipId}>
<rect x={0} y={0} width={node.width} height={node.height} rx={26} />
</clipPath>
<g clipPath={`url(#${clipId})`}>
<rect
x={6}
y={6}
width={Math.max(0, node.width - 12)}
height={Math.max(0, node.height - 12)}
rx={21}
fill="rgba(255, 255, 255, 0.02)"
stroke="rgba(255, 255, 255, 0.06)"
vectorEffect="non-scaling-stroke"
/>
<circle
cx={badgeX}
cy={badgeY}
r={badgeRadius}
fill={node.stroke}
stroke="rgba(229, 238, 248, 0.24)"
vectorEffect="non-scaling-stroke"
/>
<text
x={badgeX}
y={badgeY + badgeRadius * 0.34}
textAnchor="middle"
fill="#071019"
fontSize={Math.max(6, badgeRadius * 0.82)}
fontWeight={800}
>
{node.badgeText}
</text>
{showStatus && activeTransform.scale > 0.66 && (
<g transform={`translate(${node.width - 78} 10)`} opacity={fadeBetween(activeTransform.scale, 0.62, 0.9)}>
<rect
x={0}
y={0}
width={68}
height={18}
rx={9}
fill="rgba(5, 10, 22, 0.74)"
stroke="rgba(255, 255, 255, 0.1)"
vectorEffect="non-scaling-stroke"
/>
<text
x={34}
y={12.5}
textAnchor="middle"
fill={node.stroke}
fontSize={8.5}
fontWeight={700}
letterSpacing="0.06em"
>
{statusText.toUpperCase()}
</text>
</g>
)}
{showLinkCount && (
<g transform={`translate(${node.width - 27} ${node.height - 24})`}>
<circle
cx={0}
cy={0}
r={10}
fill="rgba(5, 10, 22, 0.9)"
stroke="#f9a8d4"
strokeWidth={1.5}
vectorEffect="non-scaling-stroke"
/>
<text
x={0}
y={3.5}
textAnchor="middle"
fill="#fce7f3"
fontSize={8.5}
fontWeight={800}
>
{node.linkCount}
</text>
</g>
)}
<g opacity={node.width >= 92 && node.height >= 40 ? fadeBetween(activeTransform.scale, 0.42, 0.72) : 0} pointerEvents="none">
{renderTextLines(
copyLayout.titleLines,
titleX,
titleY,
15,
{
fill: "#f8fbff",
fontSize: 13,
fontWeight: 800,
},
)}
</g>
<g opacity={node.width >= 136 && node.height >= 68 ? fadeBetween(activeTransform.scale, 1.02, 1.44) : 0} pointerEvents="none">
{renderTextLines(
copyLayout.purposeLines,
16,
copyLayout.purposeStartY,
12.5,
{
fill: "rgba(229, 238, 248, 0.88)",
fontSize: 10.6,
},
)}
</g>
<g opacity={node.width >= 190 && node.height >= 96 ? fadeBetween(activeTransform.scale, 1.72, 2.18) : 0} pointerEvents="none">
{renderTextLines(
copyLayout.mechanismLines,
16,
copyLayout.mechanismStartY,
11.5,
{
fill: "rgba(103, 232, 249, 0.86)",
fontSize: 9.4,
},
)}
{renderTextLines(
copyLayout.metaphorLines,
16,
copyLayout.metaphorStartY,
11.2,
{
fill: "rgba(244, 114, 182, 0.84)",
fontSize: 9.1,
},
)}
</g>
</g>
</g>
);
})}
</g>
</svg>
)}
{expandedNodeMatches && expandedNodeMetrics && expandedNode && (
<div
key={`${expandedNode.graphKey}:${expandedNode.nodeId}`}
aria-label={expandedNode.ariaLabel}
className={expandedNode.className}
onClickCapture={onExpandedNodeClick}
data-graph-key={activeGraphKey}
data-node-id={selectedNode?.id}
data-node-stage={expandedNodeMetrics.stage}
style={{
position: "absolute",
left: expandedNodeMetrics.left,
top: expandedNodeMetrics.top,
width: expandedNodeMetrics.width,
height: expandedNodeMetrics.height,
"--node-screen-area-ratio": expandedNodeMetrics.areaRatio,
zIndex: 4,
overflow: "auto",
borderRadius: 32,
background:
"linear-gradient(145deg, rgba(7, 22, 32, 0.96), rgba(6, 11, 23, 0.94))",
border: "1px solid rgba(186, 230, 253, 0.72)",
boxShadow:
"0 0 0 1px rgba(34, 211, 238, 0.16), 0 28px 90px rgba(0, 0, 0, 0.48), 0 0 58px rgba(34, 211, 238, 0.24)",
pointerEvents: "auto",
}}
>
{expandedNode.content}
</div>
)}
</div>
</div>
{showSidebar && (
<aside
className={overlayPanels ? "epiphany-graph-overlay-panel" : undefined}
style={{
display: "grid",
gridTemplateRows: "auto auto 1fr",
gap: 12,
minHeight: 0,
...(overlayPanels
? {
position: "absolute",
top: 110,
right: 16,
bottom: 16,
zIndex: 5,
width: typeof sidebarWidth === "number" ? `${sidebarWidth}px` : sidebarWidth,
maxWidth: "calc(100vw - 32px)",
}
: {}),
}}
>
<section
style={{
padding: "16px 18px",
borderRadius: 24,
background: PANEL_SURFACE,
border: PANEL_BORDER,
display: "grid",
gap: 10,
}}
>
<div style={{ display: "flex", justifyContent: "space-between", gap: 12 }}>
<div>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Live graph
</div>
<div style={{ fontSize: 21, fontWeight: 800, color: "#f7fbff" }}>
{labels[activeGraphKey]}
</div>
</div>
<div
style={{
display: "grid",
alignContent: "start",
justifyItems: "end",
color: "#b5c5d8",
fontSize: 13,
}}
>
<strong style={{ color: "#f8fbff" }}>{activeLayout?.nodes.length ?? 0} nodes</strong>
<span>{activeLayout?.edges.length ?? 0} edges</span>
</div>
</div>
<div style={{ color: "rgba(229, 238, 248, 0.68)", fontSize: 14, lineHeight: 1.5 }}>
Low zoom shows structure. Higher zoom lets titles, purpose, and mechanism crawl into view one guilty layer at a time.
</div>
</section>
<section
style={{
padding: "14px 16px",
borderRadius: 22,
background: PANEL_SURFACE,
border: PANEL_BORDER,
display: "grid",
gap: 8,
}}
>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Validation
</div>
{issues.length === 0 ? (
<div style={{ color: "#86efac", fontSize: 14 }}>Typed graph shape is clean.</div>
) : (
issues.slice(0, 4).map((issue) => (
<div
key={`${issue.scope}:${issue.message}`}
style={{
padding: "10px 12px",
borderRadius: 14,
background: "rgba(120, 53, 15, 0.24)",
border: "1px solid rgba(251, 191, 36, 0.22)",
color: "#fcd34d",
fontSize: 13,
lineHeight: 1.45,
}}
>
<strong style={{ color: "#fde68a" }}>{issue.scope}</strong>: {issue.message}
</div>
))
)}
</section>
<section
style={{
minHeight: 0,
overflow: "auto",
padding: "18px 18px 20px",
borderRadius: 28,
background: PANEL_SURFACE,
border: PANEL_BORDER,
display: "grid",
gap: 16,
}}
>
{sidebar !== undefined ? sidebar : selectedNode ? (
<NodeDetails
node={selectedNode}
graphKey={activeGraphKey}
graphLabels={labels}
linkedNodes={linkedNodes}
links={state.links}
onJump={(graphKey, nodeId) => {
startTransition(() => {
setActiveGraphKey(graphKey);
updateSelection({ kind: "node", graphKey, nodeId });
});
}}
onCodeRefSelect={(codeRef) => onCodeRefSelect?.(codeRef, { graphKey: activeGraphKey, selection })}
/>
) : selectedEdge ? (
<EdgeDetails
edge={selectedEdge}
graphLabels={labels}
onCodeRefSelect={(codeRef) => onCodeRefSelect?.(codeRef, { graphKey: activeGraphKey, selection })}
/>
) : (
<EmptyDetails
activeGraphKey={activeGraphKey}
graphDescriptions={descriptions}
/>
)}
</section>
</aside>
)}
</section>
);
}
function GraphTab({
active,
label,
count,
onClick,
}: {
active: boolean;
label: string;
count: number;
onClick: () => void;
}) {
return (
<button
type="button"
onClick={onClick}
style={{
border: 0,
borderRadius: 999,
padding: "8px 12px",
background: active ? "rgba(103, 232, 249, 0.18)" : "rgba(15, 23, 42, 0.74)",
color: active ? "#d8f9ff" : "#b8c7d8",
display: "inline-flex",
gap: 8,
alignItems: "center",
cursor: "pointer",
fontWeight: 700,
}}
>
<span>{label}</span>
<span
style={{
minWidth: 22,
height: 22,
borderRadius: 999,
display: "inline-grid",
placeItems: "center",
background: active ? "rgba(7, 16, 30, 0.84)" : "rgba(148, 163, 184, 0.14)",
fontSize: 12,
}}
>
{count}
</span>
</button>
);
}
function Pill({ label, value, accent }: { label: string; value: string; accent: string }) {
return (
<div
style={{
display: "inline-flex",
alignItems: "center",
gap: 8,
borderRadius: 999,
padding: "8px 12px",
background: "rgba(15, 23, 42, 0.72)",
color: "#b8c7d8",
fontSize: 13,
}}
>
<span>{label}</span>
<strong style={{ color: accent }}>{value}</strong>
</div>
);
}
function ActionButton({
children,
onClick,
}: {
children: string;
onClick: () => void;
}) {
return (
<button
type="button"
onClick={onClick}
style={{
border: 0,
borderRadius: 999,
padding: "8px 12px",
background: "rgba(15, 23, 42, 0.82)",
color: "#e5eef8",
cursor: "pointer",
fontWeight: 700,
}}
>
{children}
</button>
);
}
function StageMessage({
children,
tone,
}: {
children: string;
tone: string;
}) {
return (
<div
style={{
position: "absolute",
inset: 0,
display: "grid",
placeItems: "center",
padding: 40,
textAlign: "center",
color: tone,
fontSize: 18,
fontWeight: 700,
}}
>
{children}
</div>
);
}
function NodeDetails({
node,
graphKey,
graphLabels,
linkedNodes,
links,
onJump,
onCodeRefSelect,
}: {
node: PositionedNode;
graphKey: GraphKey;
graphLabels: Record<GraphKey, string>;
linkedNodes: Array<{
graphKey: GraphKey;
nodeId: string;
title: string;
relationship: string | null;
}>;
links: EpiphanyGraphLink[];
onJump: (graphKey: GraphKey, nodeId: string) => void;
onCodeRefSelect: (codeRef: EpiphanyCodeRef) => void;
}) {
const crossLinkCount = graphKey === "architecture"
? links.filter((link) => link.architecture_node_id === node.id).length
: links.filter((link) => link.dataflow_node_id === node.id).length;
return (
<>
<div style={{ display: "grid", gap: 10 }}>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Selected node
</div>
<div style={{ display: "grid", gap: 8 }}>
<h2 style={{ margin: 0, fontSize: 24, lineHeight: 1.05 }}>{node.title}</h2>
<div style={{ display: "flex", gap: 8, flexWrap: "wrap" }}>
<StatusChip label={graphLabels[graphKey]} tone={graphKey === "architecture" ? "#67e8f9" : "#fb7185"} />
{node.status?.trim() && <StatusChip label={node.status} tone={node.stroke} />}
<StatusChip label={`${node.degree} degree`} tone="#c4b5fd" />
<StatusChip label={`${crossLinkCount} links`} tone="#f9a8d4" />
</div>
</div>
</div>
<DetailBlock title="Purpose">{node.purpose}</DetailBlock>
{node.mechanism?.trim() && <DetailBlock title="Mechanism">{node.mechanism}</DetailBlock>}
{node.metaphor?.trim() && <DetailBlock title="Metaphor">{node.metaphor}</DetailBlock>}
<div style={{ display: "grid", gap: 10 }}>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Cross-links
</div>
{linkedNodes.length === 0 ? (
<div style={{ color: "rgba(229, 238, 248, 0.64)", fontSize: 14 }}>
No typed cross-links for this node yet.
</div>
) : (
linkedNodes.map((linked) => (
<button
key={`${linked.graphKey}:${linked.nodeId}`}
type="button"
onClick={() => onJump(linked.graphKey, linked.nodeId)}
style={{
border: "1px solid rgba(249, 168, 212, 0.24)",
borderRadius: 16,
background: "rgba(76, 5, 25, 0.22)",
color: "#fce7f3",
padding: "12px 14px",
textAlign: "left",
cursor: "pointer",
}}
>
<strong style={{ display: "block", marginBottom: 4 }}>
{linked.title}
</strong>
<span style={{ color: "rgba(252, 231, 243, 0.78)", fontSize: 13 }}>
{graphLabels[linked.graphKey]} • {linked.nodeId}
{linked.relationship ? ` • ${linked.relationship}` : ""}
</span>
</button>
))
)}
</div>
<CodeRefsList codeRefs={node.code_refs ?? []} onCodeRefSelect={onCodeRefSelect} />
</>
);
}
function EdgeDetails({
edge,
graphLabels,
onCodeRefSelect,
}: {
edge: PositionedEdge;
graphLabels: Record<GraphKey, string>;
onCodeRefSelect: (codeRef: EpiphanyCodeRef) => void;
}) {
return (
<>
<div style={{ display: "grid", gap: 10 }}>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Selected edge
</div>
<h2 style={{ margin: 0, fontSize: 22, lineHeight: 1.08 }}>
{edge.label?.trim() || edge.kind}
</h2>
<div style={{ display: "flex", gap: 8, flexWrap: "wrap" }}>
<StatusChip label={graphLabels[edge.graphKey]} tone={edge.graphKey === "architecture" ? "#67e8f9" : "#fb7185"} />
<StatusChip label={edge.kind} tone="#c4b5fd" />
{edge.id?.trim() && <StatusChip label={edge.id} tone="#c4b5fd" />}
</div>
</div>
<DetailBlock title="Flow">
{edge.source_id} → {edge.target_id}
</DetailBlock>
{edge.mechanism?.trim() && <DetailBlock title="Mechanism">{edge.mechanism}</DetailBlock>}
<CodeRefsList codeRefs={edge.code_refs ?? []} onCodeRefSelect={onCodeRefSelect} />
</>
);
}
function EmptyDetails({
activeGraphKey,
graphDescriptions,
}: {
activeGraphKey: GraphKey;
graphDescriptions: Record<GraphKey, string>;
}) {
return (
<>
<div style={{ display: "grid", gap: 8 }}>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Details
</div>
<h2 style={{ margin: 0, fontSize: 24, lineHeight: 1.05 }}>
Click a node, or keep staring until the graph volunteers.
</h2>
</div>
<DetailBlock title="What you are looking at">
{graphDescriptions[activeGraphKey]}
</DetailBlock>
<DetailBlock title="Zoom policy">
Titles appear first. Then purpose. Then mechanism and metaphor. The graph gets to be a map before it has to be a filing cabinet.
</DetailBlock>
<DetailBlock title="Cross-links">
Nodes with the pink badge have typed correspondences in the other graph. Selecting them exposes the jump points instead of making you infer the relation from aura alone.
</DetailBlock>
</>
);
}
function DetailBlock({ title, children }: { title: string; children: ReactNode }) {
return (
<div style={{ display: "grid", gap: 6 }}>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
{title}
</div>
<div
style={{
color: "rgba(229, 238, 248, 0.88)",
fontSize: 14,
lineHeight: 1.6,
}}
>
{children}
</div>
</div>
);
}
function StatusChip({ label, tone }: { label: string; tone: string }) {
return (
<span
style={{
display: "inline-flex",
alignItems: "center",
padding: "6px 9px",
borderRadius: 999,
background: "rgba(15, 23, 42, 0.76)",
border: `1px solid ${tone}44`,
color: tone,
fontSize: 12,
fontWeight: 700,
}}
>
{label}
</span>
);
}
function CodeRefsList({
codeRefs,
onCodeRefSelect,
}: {
codeRefs: EpiphanyCodeRef[];
onCodeRefSelect: (codeRef: EpiphanyCodeRef) => void;
}) {
return (
<div style={{ display: "grid", gap: 10 }}>
<div
style={{
color: "#a3b4c8",
fontSize: 12,
letterSpacing: "0.14em",
textTransform: "uppercase",
}}
>
Code refs
</div>
{codeRefs.length === 0 ? (
<div style={{ color: "rgba(229, 238, 248, 0.64)", fontSize: 14 }}>
No code refs on this element yet.
</div>
) : (
codeRefs.map((codeRef, index) => (
<button
key={`${codeRef.path}:${codeRef.start_line ?? "?"}:${index}`}
type="button"
onClick={() => onCodeRefSelect(codeRef)}
style={{
border: "1px solid rgba(103, 232, 249, 0.22)",
borderRadius: 16,
background: "rgba(7, 20, 30, 0.72)",
color: "#e5eef8",
padding: "12px 14px",
textAlign: "left",
cursor: "pointer",
}}
>
<strong style={{ display: "block", marginBottom: 4 }}>{codeRef.path}</strong>
<div style={{ color: "#9dd7ea", fontSize: 13 }}>
{formatCodeRef(codeRef)}
</div>
{codeRef.note?.trim() && (
<div style={{ color: "rgba(229, 238, 248, 0.66)", fontSize: 12, marginTop: 6 }}>
{codeRef.note}
</div>
)}
</button>
))
)}
</div>
);
}
function renderBackdropGrid(layout: GraphLayout, graphKey: GraphKey) {
const stroke = graphKey === "architecture" ? "rgba(103, 232, 249, 0.08)" : "rgba(251, 113, 133, 0.08)";
const columns = Math.ceil(layout.width / 160);
const rows = Math.ceil(layout.height / 120);
const lines = [];
for (let column = 0; column <= columns; column += 1) {
const x = column * 160;
lines.push(
<line
key={`column-${column}`}
x1={x}
y1={0}
x2={x}
y2={layout.height}
stroke={stroke}
strokeWidth={1}
/>,
);
}
for (let row = 0; row <= rows; row += 1) {
const y = row * 120;
lines.push(
<line
key={`row-${row}`}
x1={0}
y1={y}
x2={layout.width}
y2={y}
stroke={stroke}
strokeWidth={1}
/>,
);
}
return <g pointerEvents="none">{lines}</g>;
}
function findLinkedNodes(
nodeId: string,
graphKey: GraphKey,
state: EpiphanyGraphViewerProps["state"],
) {
if (graphKey === "architecture") {
return state.links
.filter((link) => link.architecture_node_id === nodeId)
.map((link) => ({
graphKey: "dataflow" as const,
nodeId: link.dataflow_node_id,
title:
state.dataflow.nodes.find((node) => node.id === link.dataflow_node_id)?.title ??
link.dataflow_node_id,
relationship: link.relationship ?? null,
}));
}
return state.links
.filter((link) => link.dataflow_node_id === nodeId)
.map((link) => ({
graphKey: "architecture" as const,
nodeId: link.architecture_node_id,
title:
state.architecture.nodes.find((node) => node.id === link.architecture_node_id)?.title ??
link.architecture_node_id,
relationship: link.relationship ?? null,
}));
}
function fitGraphToViewport(layout: GraphLayout, width: number, height: number): ViewTransform {
const padding = 76;
const scale = clamp(
Math.min((width - padding * 2) / layout.width, (height - padding * 2) / layout.height),
0.36,
1.12,
);
return {
x: (width - layout.width * scale) / 2,
y: (height - layout.height * scale) / 2,
scale,
userMoved: false,
};
}
function nodeCenter(node: PositionedNode) {
return {
x: node.x + node.width / 2,
y: node.y + node.height / 2,
};
}
function focusedNodeScale(node: PositionedNode, viewportWidth: number, viewportHeight: number) {
const targetWidth = Math.max(420, viewportWidth * 0.72);
const targetHeight = Math.max(360, viewportHeight * 0.74);
return clamp(
Math.min(targetWidth / Math.max(1, node.width), targetHeight / Math.max(1, node.height)),
0.72,
16,
);
}
function expandedNodeViewportMetrics(
node: PositionedNode,
transform: ViewTransform,
viewportWidth: number,
viewportHeight: number,
) {
const left = transform.x + node.x * transform.scale;
const top = transform.y + node.y * transform.scale;
const width = node.width * transform.scale;
const height = node.height * transform.scale;
const areaRatio = (width * height) / Math.max(1, viewportWidth * viewportHeight);
return {
left,
top,
width,
height,
areaRatio,
stage: expandedNodeStage(width, height, areaRatio),
};
}
function expandedNodeStage(width: number, height: number, areaRatio: number) {
if (width >= 680 && height >= 420 && areaRatio >= 0.22) {
return "article";
}
if (width >= 360 && height >= 190 && areaRatio >= 0.07) {
return "preview";
}
return "summary";
}
function handleNativeWheel(
event: WheelEvent,
viewportElement: HTMLElement,
graphKey: GraphKey,
transforms: Record<GraphKey, ViewTransform>,
setTransforms: React.Dispatch<React.SetStateAction<Record<GraphKey, ViewTransform>>>,
) {
event.preventDefault();
event.stopPropagation();
const rect = viewportElement.getBoundingClientRect();
const cursorX = event.clientX - rect.left;
const cursorY = event.clientY - rect.top;
const current = transforms[graphKey];
const zoomFactor = event.deltaY < 0 ? 1.12 : 1 / 1.12;
const nextScale = clamp(current.scale * zoomFactor, 0.28, 16);
const worldX = (cursorX - current.x) / current.scale;
const worldY = (cursorY - current.y) / current.scale;
const nextX = cursorX - worldX * nextScale;
const nextY = cursorY - worldY * nextScale;
setTransforms((existing) => ({
...existing,
[graphKey]: {
x: nextX,
y: nextY,
scale: nextScale,
userMoved: true,
},
}));
}
function handlePointerDown(
event: ReactPointerEvent<SVGSVGElement>,
transform: ViewTransform,
dragRef: React.MutableRefObject<{
active: boolean;
originX: number;
originY: number;
startX: number;
startY: number;
} | null>,
) {
if (event.target !== event.currentTarget) {
return;
}
dragRef.current = {
active: true,
originX: event.clientX,
originY: event.clientY,
startX: transform.x,
startY: transform.y,
};
}
function handlePointerMove(
event: ReactPointerEvent<SVGSVGElement>,
graphKey: GraphKey,
dragRef: React.MutableRefObject<{
active: boolean;
originX: number;
originY: number;
startX: number;
startY: number;
} | null>,
setTransforms: React.Dispatch<React.SetStateAction<Record<GraphKey, ViewTransform>>>,
) {
if (!dragRef.current?.active) {
return;
}
const deltaX = event.clientX - dragRef.current.originX;
const deltaY = event.clientY - dragRef.current.originY;
setTransforms((existing) => ({
...existing,
[graphKey]: {
...existing[graphKey],
x: dragRef.current!.startX + deltaX,
y: dragRef.current!.startY + deltaY,
userMoved: true,
},
}));
}
function handlePointerUp(
dragRef: React.MutableRefObject<{
active: boolean;
originX: number;
originY: number;
startX: number;
startY: number;
} | null>,
) {
if (dragRef.current) {
dragRef.current.active = false;
}
}
function nudgeZoom(
graphKey: GraphKey,
factor: number,
setTransforms: React.Dispatch<React.SetStateAction<Record<GraphKey, ViewTransform>>>,
) {
setTransforms((current) => ({
...current,
[graphKey]: {
...current[graphKey],
scale: clamp(current[graphKey].scale * factor, 0.28, 16),
userMoved: true,
},
}));
}
function edgeColor(graphKey: GraphKey, isSelected: boolean, isConnected: boolean | null) {
if (isSelected) {
return "#fde68a";
}
if (isConnected) {
return graphKey === "architecture" ? "#67e8f9" : "#fb7185";
}
return graphKey === "architecture" ? "#22d3ee" : "#f43f5e";
}
function nodeOpacity(
node: PositionedNode,
selectedNode: PositionedNode | null,
isNeighbor: boolean,
) {
if (!selectedNode) {
return 1;
}
if (selectedNode.id === node.id || isNeighbor) {
return 1;
}
return 0.36;
}
function isCompactGraphLayout(layout: GraphLayout) {
if (layout.nodes.length === 0) {
return false;
}
const widths = layout.nodes.map((node) => node.width).sort((left, right) => left - right);
const medianWidth = widths[Math.floor(widths.length / 2)] ?? 0;
return medianWidth < 96;
}
function safeDomId(value: string) {
return value.replace(/[^a-zA-Z0-9_-]/g, "-");
}
function fadeBetween(value: number, start: number, end: number) {
if (value <= start) {
return 0;
}
if (value >= end) {
return 1;
}
return (value - start) / (end - start);
}
function buildNodeCopyLayout(node: PositionedNode) {
const compactHeight = node.height < 76;
const reservesStatusLane = node.status?.trim() && node.width >= 176 && node.height >= 72;
const reservesLinkLane = node.linkCount > 0 && node.width >= 150 && node.height >= 86;
const titleLeftInset = node.height < 40 ? 32 : 46;
const titleRightInset = reservesStatusLane ? 92 : reservesLinkLane ? 48 : 18;
const titleWidth = Math.max(
28,
node.width - titleLeftInset - titleRightInset,
);
const bodyWidth = Math.max(80, node.width - 34);
const titleLines = wrapTextToLines(
node.title,
estimateCharacterCapacity(titleWidth, 7.4),
compactHeight ? 1 : 2,
);
const purposeLines = wrapTextToLines(
node.purpose,
estimateCharacterCapacity(bodyWidth, 6.15),
3,
);
const mechanismLines = node.mechanism?.trim()
? wrapTextToLines(
node.mechanism,
estimateCharacterCapacity(bodyWidth, 6),
2,
)
: [];
const metaphorLines = node.metaphor?.trim()
? wrapTextToLines(
node.metaphor,
estimateCharacterCapacity(bodyWidth, 6),
2,
)
: [];
const purposeStartY = 26 + titleLines.length * 15 + 12;
const mechanismStartY =
purposeStartY + purposeLines.length * 12.5 + (purposeLines.length > 0 ? 11 : 0);
const metaphorStartY =
mechanismStartY +
mechanismLines.length * 11.5 +
(mechanismLines.length > 0 ? 9 : 0);
return {
titleLines,
purposeLines,
mechanismLines,
metaphorLines,
purposeStartY,
mechanismStartY,
metaphorStartY,
};
}
function renderTextLines(
lines: string[],
x: number,
startY: number,
lineHeight: number,
options: {
fill: string;
fontSize: number;
fontWeight?: number;
},
) {
if (lines.length === 0) {
return null;
}
return (
<text
x={x}
y={startY}
fill={options.fill}
fontSize={options.fontSize}
fontWeight={options.fontWeight}
>
{lines.map((line, index) => (
<tspan key={`${startY}-${index}`} x={x} dy={index === 0 ? 0 : lineHeight}>
{line}
</tspan>
))}
</text>
);
}
function wrapTextToLines(text: string, maxChars: number, maxLines: number) {
const normalized = text.replace(/\s+/g, " ").trim();
if (!normalized) {
return [];
}
const words = normalized.split(" ");
const lines: string[] = [];
let current = "";
let truncated = false;
for (const word of words) {
const candidate = current ? `${current} ${word}` : word;
if (candidate.length <= maxChars) {
current = candidate;
continue;
}
if (current) {
lines.push(current);
if (lines.length === maxLines) {
truncated = true;
current = "";
break;
}
current = word;
continue;
}
lines.push(word.slice(0, Math.max(1, maxChars - 1)));
truncated = true;
current = "";
if (lines.length === maxLines) {
break;
}
}
if (current) {
if (lines.length < maxLines) {
lines.push(current);
} else {
truncated = true;
}
}
if (truncated && lines.length > 0) {
lines[lines.length - 1] = ellipsizeLine(lines[lines.length - 1], maxChars);
}
return lines;
}
function estimateCharacterCapacity(pixelWidth: number, averageCharWidth: number) {
return Math.max(12, Math.floor(pixelWidth / averageCharWidth));
}
function ellipsizeLine(text: string, maxChars: number) {
if (text.length < maxChars) {
return `${text}…`;
}
return `${text.slice(0, Math.max(1, maxChars - 1))}…`;
}
function formatCodeRef(codeRef: EpiphanyCodeRef) {
const linePart =
codeRef.start_line != null
? codeRef.end_line != null && codeRef.end_line !== codeRef.start_line
? `:${codeRef.start_line}-${codeRef.end_line}`
: `:${codeRef.start_line}`
: "";
const symbolPart = codeRef.symbol?.trim() ? ` • ${codeRef.symbol}` : "";
return `${codeRef.path}${linePart}${symbolPart}`;
}
function clamp(value: number, min: number, max: number) {
return Math.min(max, Math.max(min, value));
}