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Beyhan Oğur
2026-04-26 21:52:23 +03:00
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/**
* Routing Tree View — left-to-right flow lane.
*
* Source → conditions (shared prefix / OR merge) → rule node → target node(s)
*
* OR branches are split into parallel paths that converge on the same
* shared child via subtree-hash deduplication. Each rule target gets its
* own leaf node. Nodes are draggable for exploration; nothing is editable.
*/
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip";
import { useGetRoutingRulesQuery } from "@/lib/store/apis/routingRulesApi";
import { useNavigate } from "@tanstack/react-router";
import type { Node, NodeChange } from "@xyflow/react";
import { Background, BackgroundVariant, Controls, Panel, ReactFlow, useEdgesState, useNodesState } from "@xyflow/react";
import "@xyflow/react/dist/style.css";
import { AlertCircle, ArrowLeft, GitBranch, Info, Link2, Loader2, RotateCcw, Search } from "lucide-react";
import { useCallback, useEffect, useMemo, useRef, useState } from "react";
import { useCookies } from "react-cookie";
import { FIT_VIEW_PADDING, SCOPE_CONFIG, SCOPE_ORDER } from "./constants";
import { buildGraph } from "./graphBuilder";
import { RFConditionNode } from "./node/rfConditionNode";
import { RFRuleNode } from "./node/rfRuleNode";
import { RFSourceNode } from "./node/rfSourceNode";
import { POSITIONS_COOKIE, PositionCookie, computeFingerprint } from "./positionPersistence";
import { RfChainEdge } from "./rfChainEdge";
// ─── Node types (stable reference) ────────────────────────────────────────
const nodeTypes = {
rfSource: RFSourceNode,
rfCondition: RFConditionNode,
rfRule: RFRuleNode,
};
const edgeTypes = { rfChain: RfChainEdge };
// ─── Main component ────────────────────────────────────────────────────────
export function RoutingTreeView() {
const navigate = useNavigate();
const { data, isLoading, isError } = useGetRoutingRulesQuery({ limit: 500 });
const rules = data?.rules ?? [];
// ── Position persistence ───────────────────────────────────────────────
const [cookies, setCookie, removeCookie] = useCookies([POSITIONS_COOKIE]);
// React Flow instance — captured via onInit so we can call fitView imperatively.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const rfInstanceRef = useRef<any>(null);
const resetTimeoutRef = useRef<ReturnType<typeof setTimeout> | null>(null);
useEffect(
() => () => {
if (resetTimeoutRef.current) clearTimeout(resetTimeoutRef.current);
},
[],
);
// Capture cookie value once on mount so re-saves don't trigger re-renders.
const [initialCookie] = useState<PositionCookie | undefined>(() => cookies[POSITIONS_COOKIE] as PositionCookie | undefined);
const fingerprint = useMemo(() => computeFingerprint(rules), [rules]);
const { baseNodes, baseEdges } = useMemo(() => {
const g = buildGraph(rules);
return { baseNodes: g.nodes, baseEdges: g.edges };
}, [rules]);
// If the cookie fingerprint matches current rules, restore saved positions.
const { mergedNodes, positionsRestored } = useMemo(() => {
if (initialCookie?.fingerprint === fingerprint && initialCookie?.positions && Object.keys(initialCookie.positions).length > 0) {
return {
mergedNodes: baseNodes.map((n) => ({
...n,
position: initialCookie.positions[n.id] ?? n.position,
})),
positionsRestored: true,
};
}
return { mergedNodes: baseNodes, positionsRestored: false };
}, [baseNodes, fingerprint, initialCookie]);
const [nodes, setNodes, onNodesChange] = useNodesState(mergedNodes);
const [edges, setEdges, onEdgesChange] = useEdgesState(baseEdges);
useEffect(() => {
setNodes(mergedNodes);
}, [mergedNodes, setNodes]);
useEffect(() => {
setEdges(baseEdges);
}, [baseEdges, setEdges]);
// Always reflect the latest nodes in a ref so the save handler is not stale.
const nodesRef = useRef(nodes);
nodesRef.current = nodes;
// Tracks the last data written so position-save and viewport-save don't clobber each other.
const cookieDataRef = useRef<Omit<PositionCookie, "fingerprint">>({ positions: {}, viewport: undefined });
// Once positions are known to be restored, seed the ref so viewport-only saves keep positions.
useEffect(() => {
if (positionsRestored && initialCookie) {
cookieDataRef.current = { positions: initialCookie.positions, viewport: initialCookie.viewport };
}
}, [positionsRestored, initialCookie]);
const writeCookie = useCallback(
(update: Partial<Omit<PositionCookie, "fingerprint">>) => {
cookieDataRef.current = { ...cookieDataRef.current, ...update };
setCookie(POSITIONS_COOKIE, { fingerprint, ...cookieDataRef.current } satisfies PositionCookie, {
path: "/",
maxAge: 30 * 24 * 60 * 60, // 30 days
});
},
[fingerprint, setCookie],
);
// Save positions to cookie when a drag ends.
const handleNodesChange = useCallback(
(changes: NodeChange[]) => {
onNodesChange(changes);
const hasDragEnd = changes.some((c) => c.type === "position" && c.dragging === false);
if (!hasDragEnd) return;
const posMap: Record<string, { x: number; y: number }> = {};
for (const n of nodesRef.current) posMap[n.id] = n.position;
// Apply the final positions from the change events themselves (state not yet flushed).
for (const c of changes) {
if (c.type === "position" && c.dragging === false && c.position) {
posMap[c.id] = c.position;
}
}
writeCookie({ positions: posMap });
},
[onNodesChange, writeCookie],
);
// Save viewport (pan + zoom) when the user stops moving.
const handleMoveEnd = useCallback(
(_: unknown, viewport: { x: number; y: number; zoom: number }) => {
writeCookie({ viewport });
},
[writeCookie],
);
// Reset all saved positions and re-fit to the computed default layout.
const handleResetLayout = useCallback(() => {
removeCookie(POSITIONS_COOKIE, { path: "/" });
cookieDataRef.current = { positions: {}, viewport: undefined };
setNodes(baseNodes);
setSelectedNodeId(null);
setSelectedEdgeId(null);
if (resetTimeoutRef.current) clearTimeout(resetTimeoutRef.current);
resetTimeoutRef.current = setTimeout(() => rfInstanceRef.current?.fitView({ padding: FIT_VIEW_PADDING, duration: 300 }), 50);
}, [baseNodes, removeCookie, setNodes]);
// ── Selection / path highlight ────────────────────────────────────────
const [selectedNodeId, setSelectedNodeId] = useState<string | null>(null);
const [selectedEdgeId, setSelectedEdgeId] = useState<string | null>(null);
/**
* BFS up (forward edges only — skips chain-backs) to find all ancestors,
* and BFS down (all edges including chain-backs) to find all descendants.
* Chain-back edges are identified by their id ending in "-chain".
*/
const selectedHighlightIds = useMemo<Set<string> | null>(() => {
// Edge selection: highlight only the two endpoint nodes + the edge itself.
if (selectedEdgeId) {
const edge = edges.find((e) => e.id === selectedEdgeId);
if (!edge) return null;
return new Set<string>([edge.source, edge.target]);
}
if (!selectedNodeId) return null;
const childrenOf = new Map<string, string[]>();
const parentsOf = new Map<string, string[]>();
for (const e of edges) {
if (!childrenOf.has(e.source)) childrenOf.set(e.source, []);
childrenOf.get(e.source)!.push(e.target);
// Exclude chain-back edges from the ancestor map (they reverse flow direction).
if (!e.id.endsWith("-chain")) {
if (!parentsOf.has(e.target)) parentsOf.set(e.target, []);
parentsOf.get(e.target)!.push(e.source);
}
}
const highlighted = new Set<string>([selectedNodeId]);
const upQ = [selectedNodeId];
while (upQ.length) {
const id = upQ.pop()!;
for (const p of parentsOf.get(id) ?? []) {
if (!highlighted.has(p)) {
highlighted.add(p);
upQ.push(p);
}
}
}
const downQ = [selectedNodeId];
while (downQ.length) {
const id = downQ.pop()!;
for (const c of childrenOf.get(id) ?? []) {
if (!highlighted.has(c)) {
highlighted.add(c);
downQ.push(c);
}
}
}
return highlighted;
}, [selectedNodeId, selectedEdgeId, edges]);
const handleNodeClick = useCallback((_: React.MouseEvent, node: Node) => {
setSelectedEdgeId(null);
setSelectedNodeId((prev) => (prev === node.id ? null : node.id));
}, []);
const handleEdgeClick = useCallback((_: React.MouseEvent, edge: { id: string }) => {
setSelectedNodeId(null);
setSelectedEdgeId((prev) => (prev === edge.id ? null : edge.id));
}, []);
const handlePaneClick = useCallback(() => {
setSelectedNodeId(null);
setSelectedEdgeId(null);
}, []);
// ── Search / highlight ─────────────────────────────────────────────────
const [search, setSearch] = useState("");
/**
* Returns null when search is empty (no filtering).
* Returns an empty Set when there are no matches (dim everything).
* Otherwise returns the set of node IDs that should stay visible:
* directly matching nodes + all their ancestors + all their descendants.
*/
const highlightedIds = useMemo<Set<string> | null>(() => {
const q = search.trim().toLowerCase();
if (!q) return null;
const childrenOf = new Map<string, string[]>();
const parentsOf = new Map<string, string[]>();
for (const e of edges) {
if (!childrenOf.has(e.source)) childrenOf.set(e.source, []);
childrenOf.get(e.source)!.push(e.target);
if (!parentsOf.has(e.target)) parentsOf.set(e.target, []);
parentsOf.get(e.target)!.push(e.source);
}
const matched = new Set<string>();
for (const n of nodes) {
const d = n.data as any;
const cond = (d?.condition as string | undefined)?.toLowerCase();
const ruleName = (d?.rule?.name as string | undefined)?.toLowerCase();
const ruleCel = (d?.rule?.cel_expression as string | undefined)?.toLowerCase();
if (cond?.includes(q) || ruleName?.includes(q) || ruleCel?.includes(q)) {
matched.add(n.id);
}
}
if (matched.size === 0) return new Set();
const highlighted = new Set<string>(matched);
// BFS upstream → source
const upQ = [...matched];
while (upQ.length) {
const id = upQ.pop()!;
for (const p of parentsOf.get(id) ?? []) {
if (!highlighted.has(p)) {
highlighted.add(p);
upQ.push(p);
}
}
}
// BFS downstream → rule leaves
const downQ = [...matched];
while (downQ.length) {
const id = downQ.pop()!;
for (const c of childrenOf.get(id) ?? []) {
if (!highlighted.has(c)) {
highlighted.add(c);
downQ.push(c);
}
}
}
return highlighted;
}, [search, nodes, edges]);
const matchCount = useMemo(() => {
if (!highlightedIds) return 0;
return nodes.filter((n) => n.type === "rfRule" && highlightedIds.has(n.id)).length;
}, [highlightedIds, nodes]);
// Selection takes priority; search acts as fallback when nothing is selected.
const activeHighlightIds = selectedHighlightIds ?? highlightedIds;
// Derived display nodes/edges — keeps opacity layered on top without
// disturbing drag state (positions stay in the underlying `nodes` state).
const displayNodes = useMemo(() => {
const h = activeHighlightIds;
const dimOpacity = selectedNodeId ? 0.12 : 0.25;
return nodes.map((n) => {
const isSelected = n.id === selectedNodeId;
if (!h) return { ...n, selected: isSelected };
const active = h.size > 0;
return {
...n,
selected: isSelected,
style: {
...n.style,
opacity: active && !h.has(n.id) ? dimOpacity : 1,
transition: "opacity 0.15s",
},
};
});
}, [nodes, activeHighlightIds, selectedNodeId]);
const displayEdges = useMemo(() => {
const h = activeHighlightIds;
const dimOpacity = selectedNodeId || selectedEdgeId ? 0.1 : 0.2;
if (!h) return edges;
const active = h.size > 0;
return edges.map((e) => {
const endpointsLit = h.has(e.source) && h.has(e.target);
const isSelectedEdge = e.id === selectedEdgeId;
const lit = endpointsLit || isSelectedEdge;
return {
...e,
style: {
...e.style,
opacity: active && !lit ? dimOpacity : 1,
transition: "opacity 0.15s",
},
};
});
}, [edges, activeHighlightIds, selectedNodeId, selectedEdgeId]);
if (isLoading) {
return (
<div className="flex h-full items-center justify-center">
<Loader2 className="text-muted-foreground h-6 w-6 animate-spin" />
</div>
);
}
if (isError) {
return (
<div className="text-muted-foreground flex h-full items-center justify-center gap-2">
<AlertCircle className="h-5 w-5" />
<span className="text-sm">Failed to load routing rules</span>
</div>
);
}
if (rules.length === 0) {
return (
<div className="text-muted-foreground flex h-full flex-col items-center justify-center gap-3">
<GitBranch className="h-10 w-10 opacity-20" />
<p className="text-sm">No routing rules to display</p>
<Button
variant="outline"
size="sm"
data-testid="routing-tree-back-empty-btn"
onClick={() => navigate({ to: "/workspace/routing-rules" })}
>
<ArrowLeft className="mr-1.5 h-4 w-4" />
Back to rules
</Button>
</div>
);
}
return (
<ReactFlow
nodes={displayNodes}
edges={displayEdges}
onNodesChange={handleNodesChange}
onEdgesChange={onEdgesChange}
onNodeClick={handleNodeClick}
onEdgeClick={handleEdgeClick}
onPaneClick={handlePaneClick}
onInit={(instance) => {
rfInstanceRef.current = instance;
}}
nodeTypes={nodeTypes}
edgeTypes={edgeTypes}
fitView={!positionsRestored}
fitViewOptions={{ padding: FIT_VIEW_PADDING }}
defaultViewport={positionsRestored ? (initialCookie?.viewport ?? { x: 0, y: 0, zoom: 1 }) : undefined}
onMoveEnd={handleMoveEnd}
nodesDraggable={true}
nodesConnectable={false}
elementsSelectable={true}
zoomOnDoubleClick={false}
proOptions={{ hideAttribution: true }}
>
<Background variant={BackgroundVariant.Dots} gap={20} size={1} color="var(--border)" />
<Controls showInteractive={false} />
<Panel position="top-left">
<div className="flex flex-col gap-2">
{/* Main toolbar */}
<div className="dark:bg-card flex items-center gap-3 rounded-md border bg-white px-4 py-2.5 shadow-sm">
<Button
variant="ghost"
size="sm"
className="-ml-1 gap-1.5 !pl-0 hover:bg-transparent"
data-testid="routing-tree-back-toolbar-btn"
onClick={() => navigate({ to: "/workspace/routing-rules" })}
>
<ArrowLeft className="h-4 w-4" />
Back
</Button>
<div className="bg-border h-5 w-px" />
<div className="flex items-center gap-2">
<GitBranch className="text-muted-foreground h-4 w-4" />
<p className="text-foreground text-sm leading-tight font-semibold">Routing Tree</p>
<p className="text-muted-foreground text-[11px]">
{search
? highlightedIds && highlightedIds.size > 0
? `${matchCount} rule${matchCount !== 1 ? "s" : ""}`
: "no match"
: `${rules.length} rule${rules.length !== 1 ? "s" : ""}`}
</p>
</div>
<div className="bg-border h-5 w-px" />
<div className="relative">
<Search className="text-muted-foreground absolute top-1/2 left-2.5 h-3.5 w-3.5 -translate-y-1/2" />
<Input
value={search}
onChange={(e) => setSearch(e.target.value)}
placeholder="Search conditions or rules…"
className="h-8 w-56 pl-8 text-sm"
/>
</div>
<div className="bg-border h-5 w-px" />
<Button
variant="ghost"
size="sm"
className="text-muted-foreground hover:text-foreground gap-1.5"
onClick={handleResetLayout}
title="Reset to default layout"
data-testid="routing-tree-reset-layout-btn"
>
<RotateCcw className="h-3.5 w-3.5" />
Reset layout
</Button>
</div>
{/* Scope + edge legend — floats below */}
<div className="dark:bg-card flex items-center gap-3 rounded-md border bg-white px-3 py-1.5 shadow-sm">
{SCOPE_ORDER.map((s) => (
<div key={s} className="flex items-center gap-1.5">
<span className="h-2 w-2 rounded-full" style={{ backgroundColor: SCOPE_CONFIG[s].color }} />
<span className="text-muted-foreground text-[10px] font-medium">{SCOPE_CONFIG[s].label}</span>
</div>
))}
<div className="bg-border h-3 w-px" />
<div className="flex items-center gap-1.5">
<Link2 className="text-muted-foreground h-2.5 w-2.5" />
<span className="text-muted-foreground text-[10px] font-medium">Chain rule</span>
</div>
<div className="bg-border h-3 w-px" />
{/* Chain edge styles — both dashed (long = static, short = dynamic); arrows at path midpoint */}
<div className="flex items-center gap-1.5">
<svg width="40" height="12" className="shrink-0" aria-hidden>
<line
x1="2"
y1="6"
x2="38"
y2="6"
stroke="var(--muted-foreground)"
strokeWidth="1.5"
strokeDasharray="14 10"
strokeLinecap="round"
/>
<polygon points="20,6 14,2.5 14,9.5" fill="var(--muted-foreground)" />
</svg>
<span className="text-muted-foreground text-[10px] font-medium">Static chain</span>
<Tooltip>
<TooltipTrigger asChild>
<Info
className="text-muted-foreground/60 h-2.5 w-2.5 cursor-default"
data-testid="routing-tree-static-chain-info-trigger"
/>
</TooltipTrigger>
<TooltipContent side="top" className="max-w-[200px] text-center">
Re-entry point is fully proven by static analysis every condition on the path evaluated to a known value.
</TooltipContent>
</Tooltip>
</div>
<div className="flex items-center gap-1.5">
<svg width="40" height="12" className="shrink-0 overflow-visible" aria-hidden>
<line
className="rf-chain-legend-dynamic-dash"
x1="2"
y1="6"
x2="38"
y2="6"
stroke="var(--muted-foreground)"
strokeWidth="1.5"
strokeDasharray="3 5"
strokeLinecap="round"
/>
<polyline
points="14,2.5 26,6 14,9.5"
fill="none"
stroke="var(--muted-foreground)"
strokeWidth="1.5"
strokeLinecap="round"
strokeLinejoin="round"
/>
</svg>
<span className="text-muted-foreground text-[10px] font-medium">Dynamic chain</span>
<Tooltip>
<TooltipTrigger asChild>
<Info
className="text-muted-foreground/60 h-2.5 w-2.5 cursor-default"
data-testid="routing-tree-dynamic-chain-info-trigger"
/>
</TooltipTrigger>
<TooltipContent side="top" className="max-w-[200px] text-center">
Re-entry point is a conditional one or more conditions on the path are not fully evaluated at build time.
</TooltipContent>
</Tooltip>
</div>
</div>
</div>
</Panel>
</ReactFlow>
);
}