Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import { useCallback, useEffect, useMemo, useRef, useState } from "react";
import { useSearchParams } from "react-router-dom";
import { ScrollArea } from "@/ahuora-design-system/ui/scroll-area";
import {
SegmentRead,
usePinchHenNodePartialUpdateMutation,
usePinchStreamDataEntryPartialUpdateMutation,
} from "@/api/apiStore.gen";
import {
useCurrentHenNodes,
useCurrentStreamDataEntries,
useElementSize,
} from "@/hooks/henHooks";
import { useCurrentPinchOutputs, useCurrentSegments } from "@/hooks/PinchHooks";
import ExchangerLines from "./HENExchangerLines";
import { useHenHoverCard } from "./HENHoverCard";
import PinchLine from "./HENPinchLine";
import StreamGraphic from "./HENStreamGraphic";
import { Bounds, HenNodeMarker, StreamDragState } from "./henTypes";
import { boundsFor } from "./utils/bounds";
import { buildStreams } from "./utils/buildHENStreams";
import {
getNodePlacementRegion,
MARGIN_X,
MIN_NODE_GAP,
STREAM_BLOCK_HEIGHT,
} from "./utils/henLayoutUtils";
import {
buildHxCanonicalIdByKey,
buildHxStoredXByKey,
buildHxXsByRowBySdeId,
collectHxSides,
computeAlignedHX,
computeHxColumnBlocks,
computeHxColumnsByKey,
computeHxMultiplicityByKey,
detectHxOrder,
pairHxRowsForEachKey,
} from "./utils/hxNodes";
import { getUnitopSide } from "./utils/nodeMarkers";
import { computePinchPlacement } from "./utils/pinchLine";
import { collectAllTemps } from "./utils/streams";
// --- layout constants ---
// top/bottom whitespace for the SVG canvas (in pixels)
const PADDING_TOP = 100;
const PADDING_BOTTOM = 20;
const STREAM_BLOCK_GAP = 10; // vertical gap between strema blocks
// types
type RowIdx = number; // row number for all visible stream lines (if collapsed, 0; if expanded, 0..N-1)
type XCoord = number; // pixel X chosen for that row's hx marker
type RowsMap = Map<RowIdx, XCoord>; // All row Xs for a single (hxKey, sde id)
type SdeIdMap = Map<string, RowsMap>; // which sde does this row belong to?
/** resolvedHxMap[hxKey][sdeId][rowIdx] = xCoord */
type ResolvedHxMap = Map<string, SdeIdMap>;
/**
* immutable update: wriote a resolved X for HX nodes (hxKey, sdeid, rowIdx)
* children, (e.g. StreamGraphics) can commit a row-specific X when alignement is ambiguous.
* returns a new nested map so react state updates properly
*/
function setRowX(
map: ResolvedHxMap,
hxKey: string,
sdeId: string,
rowIdx: number,
x: number,
): ResolvedHxMap {
const next = new Map(map);
const bySdeId = new Map(next.get(hxKey) ?? []);
const rows = new Map(bySdeId.get(sdeId) ?? []);
rows.set(rowIdx, x);
bySdeId.set(sdeId, rows);
next.set(hxKey, bySdeId);
return next;
}
export default function HenDiagramsPage() {
const [_, setSearchParams] = useSearchParams();
const [containerRef, { width: svgWidth, height: svgHeight }] =
useElementSize<HTMLDivElement>();
const [streamPositions, setStreamPositions] = useState<any[]>([]);
const [optimisticExpandedBySde, setOptimisticExpandedBySde] = useState<
Map<string, boolean>
>(new Map()); // state for optimistic expanding
const [togglingSdes, setTogglingSdes] = useState<Set<string>>(new Set()); // state for "loading" optimistic expansion.
const [dragState, setDragState] = useState<StreamDragState>(null);
const [resolvedHxRowsByKey, setResolvedHxRowsByKey] = useState<ResolvedHxMap>(
new Map(),
);
const { streams: segments, isLoading, isError } = useCurrentSegments();
const { streams: sdes } = useCurrentStreamDataEntries();
const { outputs } = useCurrentPinchOutputs();
const { data: henNodes, isLoading: henNodesIsLoading } = useCurrentHenNodes();
const [updateHenNode] = usePinchHenNodePartialUpdateMutation();
const [updateSDE] = usePinchStreamDataEntryPartialUpdateMutation();
const { HoverLayer, show, hide, buildContent } = useHenHoverCard();
const pendingPersistedHxXs = useRef<Map<string, number>>(new Map());
const { allStreams, expandedBySde, aggregatedStreams } = useMemo(
() => buildStreams(segments, sdes, henNodes, streamPositions),
[segments, sdes, henNodes, streamPositions],
);
// is this sde expanded right now?
const isExpanded = useCallback(
(sdeId: string) => {
const local = optimisticExpandedBySde.get(sdeId);
if (local != null) return local;
return expandedBySde.get(sdeId) ?? false;
},
[optimisticExpandedBySde, expandedBySde],
);
// optimisitc update expand
const effectiveExpandedBySde = useMemo(() => {
const m = new Map<string, boolean>();
(sdes ?? []).forEach((s) => m.set(String(s.id), isExpanded(String(s.id))));
return m;
}, [sdes, isExpanded]);
// -------------------------------------------------
// What stuff are we actually rendering
// -------------------------------------------------
// Which list should we render: preview (while dragging) or current?
const renderStreams = useMemo(() => {
if (!dragState?.active) return allStreams;
// copy array of all streams (depending on whether user has reordered or not)
const arr = [...allStreams];
// remove the stream being dragged from array
const [moved] = arr.splice(dragState.draggedIndex, 1);
// add it back to the array in a new index.
arr.splice(dragState.overIndex, 0, moved);
return arr;
}, [dragState, allStreams]);
// -------------------------------------------------
// vertical layouts (heights, Y's, svg height)
// -------------------------------------------------
const verticalLayouts = useMemo(() => {
// block heights + gap (in pixels)
// if a stream is EXPANDED, you should see multiple lines in the same BLOCK
// hence the stream block height will grow to fit them.
const streamBlockHeights = renderStreams.map((s) => {
const expanded = isExpanded(String(s.stream_data_entry));
const h = expanded
? STREAM_BLOCK_HEIGHT * s.rawSegments.length
: STREAM_BLOCK_HEIGHT;
return h + STREAM_BLOCK_GAP;
});
// top-edge Y position (pixels) for each stream block.
const streamBlockYPositions: number[] = [];
let cur = PADDING_TOP;
streamBlockHeights.forEach((h) => {
streamBlockYPositions.push(cur);
cur += h;
});
// centre of a VISIBLE streamBlock (i.e. not/expanded), for landing slot for drag drop.
const streamBlockCentres = streamBlockYPositions.map(
(y, i) => y + (streamBlockHeights[i] - STREAM_BLOCK_GAP) / 2,
);
// get the sum of all stream block heights which is used to calculate total svgheight.
const allStreamBlocksHeight =
d3.sum(streamBlockHeights) -
(streamBlockHeights.length ? STREAM_BLOCK_GAP : 0);
// calculate svg height
const calculatedSvgHeight =
PADDING_TOP + allStreamBlocksHeight + PADDING_BOTTOM;
//final svg height should be at least 200px.
const finalSvgHeight =
calculatedSvgHeight < 300 ? 300 : calculatedSvgHeight;
return {
streamBlockHeights,
streamBlockYPositions,
streamBlockCentres,
allStreamBlocksHeight,
calculatedSvgHeight,
finalSvgHeight,
};
}, [renderStreams, isExpanded]);
// FOR HX LINES: when dragging, show the lines follow the stream.
const streamYPositionsForHXLines = useMemo(() => {
if (!dragState?.active) return verticalLayouts.streamBlockYPositions;
const arr = [...verticalLayouts.streamBlockYPositions];
const idx = renderStreams.findIndex(
(s) => String(s.stream_data_entry) === dragState.draggedStreamId,
);
if (idx >= 0) {
// get current stream block height
const blockHeight =
verticalLayouts.streamBlockHeights[idx] - STREAM_BLOCK_GAP;
// convert current drag centre Y to a top-edge Y so lines attach correctly
// topY = currentY (centre) - visible streamblockheight /2
arr[idx] = dragState.currentY - blockHeight / 2;
}
return arr;
}, [dragState, verticalLayouts, renderStreams]);
//quick lookup table to show visible (rows) per SDE in the diageram.
// e.g. there will be more visible rows for expanded segments.
const visibleCountBySdeId = useMemo(() => {
const m = new Map<string, number>();
renderStreams.forEach((s) => {
const sdeId = String(s.stream_data_entry);
const expanded = isExpanded(sdeId);
const k = expanded ? (s.rawSegments?.length ?? 1) : 1;
m.set(sdeId, Math.max(1, k));
});
return m;
}, [renderStreams, isExpanded]);
// -------------------------------------------------
// pinch stuff, and per-row horizontal bounds (depending on pinch and svg width)
// -------------------------------------------------
const pinchTempRead = outputs?.[0]?.targets?.[0]?.temp_pinch;
const pinchTemps = pinchTempRead
? {
coldPinch: pinchTempRead.cold_temp,
hotPinch: pinchTempRead.hot_temp,
}
: undefined;
// Single scalar pinch we'll use for side decisions, but this will have to be refactored to CHOOSE if there is BOTH hot and COLD pinch.
const pinch = pinchTemps?.coldPinch ?? pinchTemps?.hotPinch;
const { minT, maxT } = useMemo(() => {
const temps = collectAllTemps(aggregatedStreams);
if (!temps.length) return { minT: 0, maxT: 1 };
const s = temps.slice().sort((a, b) => a - b);
const lo = d3.quantileSorted(s, 0.05)!; // 5th percentile cut out outliers
const hi = d3.quantileSorted(s, 0.95)!; // 95th percentile
return { minT: lo, maxT: Math.max(hi, lo + 1e-6) };
}, [aggregatedStreams]);
// get pinch line X position.
const { pinchX } = useMemo(
() =>
computePinchPlacement({
pinch,
minT,
maxT,
svgWidth,
marginX: MARGIN_X,
}),
[pinch, minT, maxT, svgWidth],
);
// gets the horix=zontal bounds of each stream/segment
// i.e. between which X pixels are we allowed to place stuff for this row?
const rowBoundsAlignBySdeId = useMemo(() => {
const m = new Map<string, Bounds[]>();
renderStreams.forEach((s) => {
const sdeId = String(s.stream_data_entry);
const expanded = isExpanded(sdeId);
if (!expanded) {
// collpased: exactly one row -> one Bounds
const b = boundsFor(
Number(s.t_supply),
Number(s.t_target),
pinch,
svgWidth || 0,
pinchX,
);
m.set(sdeId, [b]);
} else {
// expanded: one Bounds per segment row.
const rows: Bounds[] = (s.rawSegments ?? []).map((seg: SegmentRead) =>
boundsFor(
Number(seg.t_supply),
Number(seg.t_target),
pinch,
svgWidth || 0,
pinchX,
),
);
m.set(sdeId, rows);
}
});
return m;
}, [renderStreams, isExpanded, pinch, svgWidth, pinchX]);
// -------------------------------------------------
// GLOBAL columns for nodes (stable order, per-hx columns, )
// -------------------------------------------------
// Sticky HX order and width (so columns don't jump around on reorder)
const hxStickyOrderRef = useRef<string[]>([]);
// stable left-to-right HX order across reorders within the session so columns dont reshuffle
// Prevents HX columns from reshuffling during drag/expand/collapse:
// - Start from the previous sticky list, drop keys not detected now.
// - Append newly detected keys (preserve their detected order).
const hxOrder: string[] = useMemo(() => {
const detectedOrder = detectHxOrder(renderStreams);
const seen = new Set(detectedOrder);
// start from the *previous sticky order* (the ref). Keep only keys that still exist in "detected".
const existing = hxStickyOrderRef.current.filter((k) => seen.has(k));
detectedOrder.forEach((k) => {
if (!existing.includes(k)) existing.push(k);
});
hxStickyOrderRef.current = existing;
return existing;
}, [renderStreams]);
// build a global hx column plan to determine where each hx block begins (start column index),
// bhow many columns it spans (its multiplicity)
// and the total number of HX columns across ALL hx keys.
const { hxStartColByKey, hxColumnSpanByKey, hxTotalCols } = useMemo(() => {
const multiplicityByKey = computeHxMultiplicityByKey(
renderStreams,
hxOrder,
effectiveExpandedBySde,
);
const { startByKey, widthByKey, totalWidth } = computeHxColumnBlocks(
hxOrder,
multiplicityByKey,
);
return {
hxStartColByKey: startByKey,
hxColumnSpanByKey: widthByKey,
hxTotalCols: totalWidth,
};
}, [renderStreams, hxOrder, effectiveExpandedBySde]);
// left/right pads for heaters/coolers (non-HX)
// to make room for nonHX nodes. We will make OVERALL global columns using this.
// left pad is for heaters (cold streams target side is on the left)
// right pad is for coolers (hot streams target is on right)
const { leftPad, rightPad } = useMemo(() => {
let maxHotnonHxNodes = 0;
let maxColdnonHxNodes = 0;
renderStreams.forEach((s) => {
const nonHxNodes = (s.markers ?? []).filter(
(m: HenNodeMarker) => !m.label?.startsWith("E") && m.henNode,
).length;
if (s.isHot) maxHotnonHxNodes = Math.max(maxHotnonHxNodes, nonHxNodes);
else maxColdnonHxNodes = Math.max(maxColdnonHxNodes, nonHxNodes);
});
return { leftPad: maxColdnonHxNodes, rightPad: maxHotnonHxNodes };
}, [renderStreams]);
// set the minimum spacing you want between grid columns (px)
// use >= MIN_NODE_GAP so circles can fit;
const desiredSpacingPx = Math.max(MIN_NODE_GAP, 120);
// base columns = what HX needs + left/right pads
const baseCols = Math.max(1, leftPad + hxTotalCols + rightPad);
// how many columns do we need to achieve desired spacing across the drawable width?
const usableW = Math.max(0, (svgWidth || 0) - 2 * MARGIN_X);
const denseCols = Math.max(1, Math.floor(usableW / desiredSpacingPx) + 1);
// add slack columns into pads so HX block stays centered/stable
const extra = Math.max(0, denseCols - baseCols);
const addLeft = Math.floor(extra / 2);
const effectiveLeftPad = leftPad + addLeft;
const totalCols = baseCols + extra;
// build the actual Xs
const columnXs = useMemo(() => {
const sp = d3
.scalePoint<number>()
.domain(d3.range(totalCols))
.range([MARGIN_X, (svgWidth || 0) - MARGIN_X])
.align(0.5)
.padding(1);
return d3.range(totalCols).map((i) => sp(i)!);
}, [totalCols, svgWidth]);
// when mapping HX -> column centers, use *effectiveLeftPad*
const hxColumnsByKey = useMemo(() => {
return computeHxColumnsByKey(
hxOrder,
hxStartColByKey,
hxColumnSpanByKey,
columnXs,
effectiveLeftPad,
);
}, [hxOrder, hxStartColByKey, hxColumnSpanByKey, columnXs, effectiveLeftPad]);
// -------------------------------------------------
// stuff for setting up layout LATER
// -------------------------------------------------
// authoritative HX X's and rows, computed by projecting global columns into each row-pair region
const { alignedHXByKey, alignedHXRowsByKey, candidateSharedXByKey } =
useMemo(() => {
// get hot/cold sides and rows for each HX
const hxSides = collectHxSides(renderStreams, effectiveExpandedBySde);
// 2) pair rows per HX with overlap-aware pairing
const hxPairs = pairHxRowsForEachKey(
hxSides,
rowBoundsAlignBySdeId,
// matchRowsByOverlap
);
// 3) compute shared (aligned) X for each hot/cold row pair using global columns
return computeAlignedHX(hxPairs, rowBoundsAlignBySdeId, hxColumnsByKey);
}, [
renderStreams,
effectiveExpandedBySde,
rowBoundsAlignBySdeId,
hxColumnsByKey,
]);
const { hxExistingXByKey, hxCanonicalIdByKey } = useMemo(() => {
return {
hxExistingXByKey: buildHxStoredXByKey(henNodes ?? []), // stored X for HX persistence. Does an X position already exist for this HX?
hxCanonicalIdByKey: buildHxCanonicalIdByKey(henNodes ?? []), // Canonical node. For each HX key, if there is no X yet, assign the hx node with the smallest ID to be the "canonical" node for the HX
};
}, [henNodes]);
// Persist shared X per hxKey only if missing (write to canonical node)
useEffect(() => {
candidateSharedXByKey?.forEach((x, hxKey) => {
Iif (!Number.isFinite(x)) return;
const already = hxExistingXByKey.get(hxKey);
if (Number.isFinite(already)) {
pendingPersistedHxXs.current.delete(hxKey);
return;
}
const canonicalId = hxCanonicalIdByKey.get(hxKey);
Iif (!canonicalId) return;
const pendingX = pendingPersistedHxXs.current.get(hxKey);
if (Number.isFinite(pendingX) && Math.abs(pendingX! - x) < 0.5) return;
pendingPersistedHxXs.current.set(hxKey, x);
updateHenNode({
id: canonicalId,
patchedHenNode: { x_position: x },
})
.unwrap()
.catch(() => {
pendingPersistedHxXs.current.delete(hxKey);
});
});
}, [
candidateSharedXByKey,
hxExistingXByKey,
hxCanonicalIdByKey,
updateHenNode,
]);
// "must-pass" HX X's per row (segment expansion)
const hxXsByRowBySdeId = useMemo(() => {
return buildHxXsByRowBySdeId(alignedHXByKey, alignedHXRowsByKey);
}, [alignedHXByKey, alignedHXRowsByKey]);
// -------------------------------------------------
// fast lookups and indices
// -------------------------------------------------
// for fast lookups for streamgraphics and unitopcircle
const sdeById = useMemo(
() => d3.index(sdes ?? [], (s: any) => +s.id),
[sdes],
);
const segmentsBySdeId = useMemo(
() =>
d3.group(segments?.children ?? [], (seg: any) => +seg.stream_data_entry),
[segments],
);
// SdeId -> current stream index (needed by ExchangerLines)
const streamIndexBySdeId = useMemo(() => {
const m = new Map<string, number>();
renderStreams.forEach((s, idx) => m.set(String(s.stream_data_entry), idx));
return m;
}, [renderStreams]);
// -------------------------------------------------
// drag handlers
// -------------------------------------------------
const handleReorder = useCallback(
(oldIndex: number, newIndex: number) => {
setStreamPositions((prev) => {
const base = prev.length > 0 ? prev : allStreams;
Iif (!base[oldIndex]) return base;
const updated = [...base];
const [moved] = updated.splice(oldIndex, 1);
updated.splice(newIndex, 0, moved);
return updated;
});
},
[allStreams],
);
const handleDragStart = useCallback(
(idx: number, startY: number) => {
const base = allStreams;
const dragged = base[idx];
const draggedStreamId = String(dragged.stream_data_entry);
setDragState({
active: true,
draggedIndex: idx,
draggedStreamId,
currentY: startY,
overIndex: idx,
});
},
[allStreams],
);
const handleDragMove = useCallback(
(idx: number, yCenter: number) => {
setDragState((prev) => {
Iif (!prev || !prev.active || prev.draggedIndex !== idx) return prev;
const over = d3.bisectCenter(
verticalLayouts.streamBlockCentres,
yCenter,
);
return { ...prev, currentY: yCenter, overIndex: over };
});
},
[verticalLayouts.streamBlockCentres],
);
const handleDragEnd = useCallback(
(idx: number) => {
setDragState((prev) => {
Iif (!prev) return null;
const from = prev.draggedIndex;
const to = prev.overIndex;
if (from !== to) handleReorder(from, to);
return null;
});
},
[handleReorder],
);
// -------------------------------------------------
// final resolved HX map for shared x positions per HX pair
// -------------------------------------------------
// write one resolved X for hx nodes using the initial render index (0 for collapsed stream, 0..N-1 for expanded segments)
const setResolvedHxX = useCallback(
(hxKey: string, sdeId: string, rowIdx: number, x: number) =>
setResolvedHxRowsByKey((prev) => setRowX(prev, hxKey, sdeId, rowIdx, x)),
[],
);
// clicking node or stream sets params (for hen sidebar)
// SO clicking on the SVG background CLEARS these params (to show overview sidetab)
const handleBackgroundClick = useCallback((): void => {
setSearchParams((prev) => {
const newParams = new URLSearchParams(prev);
newParams.delete("henStream");
newParams.delete("henNode");
newParams.delete("selType");
newParams.delete("hxGroup");
return newParams;
});
}, [setSearchParams]);
Iif (isError) return <p>Error... Please try refresh the page.</p>;
// if (!segments || segments.length === 0) // idk why this doesnt work
// return <p>No stream data found... Please click "Extract" button.</p>;
if (isLoading || henNodesIsLoading) return <p>Loading HEN diagram...</p>;
if (!allStreams.length) {
return <p>No stream data found... Please click "Extract" button.</p>;
}
return (
<ScrollArea>
{/* container for entire svg */}
<div ref={containerRef} className="w-full">
<svg
width={svgWidth}
height={verticalLayouts.finalSvgHeight}
aria-label="hen-diagram"
>
{/* arrow head shape that is appended to target end of StreamGraphics stream/segment lines */}
<defs>
<marker
id="arrow"
viewBox="-10 -10 25 25"
refX={-10}
refY={0}
markerWidth={2}
markerHeight={2}
orient="auto"
>
<path
d="M -10 0 L 50 0 M 15 0 L 7 -6 M 15 0 L 7 6"
fill="hsl(var(--hen-diagram-foreground))"
stroke="hsl(var(--hen-diagram-foreground))"
strokeWidth={2}
/>
</marker>
</defs>
{/* background of svg */}
<rect
x={0}
y={0}
className="w-full"
height={verticalLayouts.calculatedSvgHeight}
fill="hsl(var(--hen-diagram))"
onClick={handleBackgroundClick}
/>
{/* stuff for rendering STREAM/SEGMENT lines with their HenNodes */}
<g>
{renderStreams.map((stream, i) => {
const y = verticalLayouts.streamBlockYPositions[i]; // get y pixel for top of streamblock
const blockHeight =
verticalLayouts.streamBlockHeights[i] - STREAM_BLOCK_GAP;
const isDraggingThis =
!!dragState?.active &&
String(stream.stream_data_entry) === dragState.draggedStreamId;
const expanded = isExpanded(String(stream.stream_data_entry));
// split markers
const hxMarkers = (stream.markers ?? []).filter(
(m: HenNodeMarker) => m.label?.startsWith("E") && m.henNode,
);
const extraMarkers = (stream.markers ?? []).filter(
(m: HenNodeMarker) => !m.label?.startsWith("E") && m.henNode,
);
// choose side for ALL nodes based on TARGET temperature
const streamUnitOpSide = getUnitopSide(
Number(stream.t_target),
pinch,
);
const sdeId = String(stream.stream_data_entry);
const rowAlignBounds = rowBoundsAlignBySdeId.get(sdeId) ?? [];
const rowCount = visibleCountBySdeId.get(sdeId) ?? 1;
// Map "row -> HX keys (dedup) that actually participate on this row (for this sdeId)"
const hxKeysByRow = new Map<number, string[]>();
for (let r = 0; r < rowCount; r++) hxKeysByRow.set(r, []);
hxMarkers.forEach((m) => {
const rows = m.hxKey
? (alignedHXRowsByKey.get(m.hxKey)?.get(sdeId) ?? [])
: [];
rows.forEach((rowIdx) => {
if (rowIdx != null && rowIdx >= 0 && rowIdx < rowCount) {
const arr = hxKeysByRow.get(rowIdx)!;
if (m.hxKey && !arr.includes(m.hxKey)) arr.push(m.hxKey);
}
});
});
// Map "row -> non-HX markers present on that row"
const nonHxNodesByRow = new Map<number, HenNodeMarker[]>();
for (let r = 0; r < rowCount; r++) nonHxNodesByRow.set(r, []);
if (expanded) {
const rowSdeIds: string[] = (stream.rawSegments ?? []).map(
(seg) => String(seg.stream_data_entry),
);
extraMarkers.forEach((m) => {
const idx = rowSdeIds.findIndex((sdeId) => sdeId === m.sdeId);
if (idx >= 0) nonHxNodesByRow.get(idx)!.push(m);
});
} else {
extraMarkers.forEach((m) => nonHxNodesByRow.get(0)!.push(m));
}
// Deterministic secondary order for nonHxNodes
for (let r = 0; r < rowCount; r++) {
nonHxNodesByRow
.get(r)!
.sort((a, b) => a.henNode!.id - b.henNode!.id);
}
// For HX: inside each row, honor sticky hxOrder. Only include hxKeys that appear on THIS row.
function orderedHxKeysForRow(row: number): string[] {
const present = new Set(hxKeysByRow.get(row) ?? []);
return hxOrder.filter((k) => present.has(k));
}
// Compute slot centers for a row, inside the stream's side region (pinch-aware)
function makeSlotsForRow(
rowBounds: Bounds,
slotCount: number,
): number[] {
Iif (slotCount <= 0) return [];
// Region biased by the chosen side relative to the pinch
const region = getNodePlacementRegion(
rowBounds,
pinchX,
svgWidth || 0,
streamUnitOpSide,
);
const sp = d3
.scalePoint<number>()
.domain(d3.range(slotCount))
.range([region.left, region.right])
.align(0.5)
.padding(0);
const centers = d3.range(slotCount).map((i) => sp(i)!);
return centers.sort(
(a, b) =>
Math.abs(a - pinchX) - Math.abs(b - pinchX) || a - b,
);
}
// Assign X-positions for all markers via unified slots
// Use a map so each HX appears once (with xPositions filled across rows)
const markersByKey = new Map<string, HenNodeMarker>();
// helpers to get/create unique entries
const hxKeyFor = (m: HenNodeMarker) =>
String(m.henNode?.id ?? `${m.hxKey}|${sdeId}`);
const ensureHX = (m: HenNodeMarker) => {
const key = hxKeyFor(m);
let acc = markersByKey.get(key);
if (!acc) {
acc = { ...m, xPositions: Array(rowCount).fill(NaN) };
markersByKey.set(key, acc);
}
return acc;
};
const ensureExtra = (m: HenNodeMarker, row: number) => {
// nonHxNodes are truly per-row, so key by (nodeId,row) to avoid repeats
const key = `${m.henNode?.id ?? m.label}:${row}`;
let acc = markersByKey.get(key);
if (!acc) {
acc = { ...m, xPositions: Array(rowCount).fill(NaN) };
markersByKey.set(key, acc);
}
return acc;
};
for (let row = 0; row < rowCount; row++) {
const rowBounds = rowAlignBounds[row] ??
rowAlignBounds[0] ?? {
left: MARGIN_X,
right: (svgWidth || 0) - MARGIN_X,
};
// 1) Count HX pairs and nonHxNodes on this row
const hxKeysRowOrdered = orderedHxKeysForRow(row); // honors sticky hxOrder but filtered to present keys
const hxPairsOnRow = hxKeysRowOrdered.length;
const nonHxNodesOnRow = (nonHxNodesByRow.get(row) ?? []).length;
const totalSlots = hxPairsOnRow + nonHxNodesOnRow;
if (totalSlots <= 0) continue;
// 2) Make slots (pinch-biased)
const slotXs = makeSlotsForRow(rowBounds, totalSlots);
// 3) Build a slot-index map for HX on this row:
// Allocate the first hxPairsOnRow slots to HX (in hxOrder), then the rest to nonHxNodes.
const hxSlotIndexByKey = new Map<string, number>();
for (let j = 0; j < hxPairsOnRow; j++) {
hxSlotIndexByKey.set(hxKeysRowOrdered[j], j);
}
// 4) Place HX markers that actually live on this row (for THIS sdeId)
hxMarkers.forEach((m) => {
const rows = m.hxKey
? (alignedHXRowsByKey.get(m.hxKey)?.get(sdeId) ?? [])
: [];
const alignedXsForSdeId = m.hxKey
? (alignedHXByKey.get(m.hxKey)?.get(sdeId) ?? [])
: [];
const acc = ensureHX(m); // single marker object for this HX across rows
// does this HX participate on this row?
const idxInRows = rows.findIndex((r) => r === row);
if (
idxInRows >= 0 &&
Number.isFinite(alignedXsForSdeId[idxInRows])
) {
// use the shared, cross-side aligned X
acc.xPositions[row] = alignedXsForSdeId[
idxInRows
] as number;
} else if (!expanded && row === 0 && rows.length > 0) {
// collapsed: show HX on row 0 if it exists anywhere on this sdeId
const firstAligned = alignedXsForSdeId.find((v) =>
Number.isFinite(v),
);
if (Number.isFinite(firstAligned)) {
acc.xPositions[row] = firstAligned as number;
} else if (m.hxKey && hxSlotIndexByKey.has(m.hxKey)) {
const slotIdx = hxSlotIndexByKey.get(m.hxKey)!;
acc.xPositions[row] = slotXs[slotIdx];
}
} else if (
!expanded &&
m.hxKey &&
hxSlotIndexByKey.has(m.hxKey)
) {
// collapsed-only: local slot fallback
const slotIdx = hxSlotIndexByKey.get(m.hxKey)!;
// acc[row] = slotXs[slotIdx];
acc.xPositions[row] = slotXs[slotIdx];
}
// when expanded and we didn't get an aligned X, leave xs[row] as NaN
});
// 5) Place nonHxNodes into the remaining slots, deterministically
const nonHxNodes = nonHxNodesByRow.get(row) ?? [];
nonHxNodes.forEach((m, k) => {
const acc = ensureExtra(m, row);
const slotIdx = hxPairsOnRow + k;
if (slotIdx < slotXs.length)
acc.xPositions[row] = slotXs[slotIdx];
// collapsed: nonHxNodes appear only on row 0 (keep others NaN)
// nothing else to do — xPositions for other rows remain NaN
});
}
// Final array sent to StreamGraphic
const markersWithXs = Array.from(markersByKey.values());
const hxXsByRow = hxXsByRowBySdeId.get(sdeId);
const yForRow = isDraggingThis
? dragState!.currentY - blockHeight / 2
: y;
return (
<StreamGraphic
key={stream.stream_data_entry}
stream={stream}
isHot={stream.isHot}
index={i}
y={yForRow}
dragging={isDraggingThis}
onDragStart={handleDragStart}
onDragMove={handleDragMove}
onDragEnd={handleDragEnd}
width={svgWidth}
height={blockHeight}
expanded={expanded}
onToggleExpanded={(sdeId, next) => {
// optimistic flip
setOptimisticExpandedBySde((prev) => {
const m = new Map(prev);
m.set(sdeId, next);
return m;
});
// mark busy
setTogglingSdes((prev) => new Set(prev).add(sdeId));
// persust
updateSDE({
id: +sdeId,
patchedStreamDataEntry: { expanded: next },
})
.unwrap()
.catch(() => {
//rollback on fail
setOptimisticExpandedBySde((prev) => {
const m = new Map(prev);
m.set(sdeId, !next);
return m;
});
})
.finally(() => {
// clear busy
setTogglingSdes((prev) => {
const n = new Set(prev);
n.delete(sdeId);
return n;
});
});
}}
isToggling={togglingSdes.has(
String(stream.stream_data_entry),
)}
pinchX={pinchX}
pinchTemps={pinchTemps}
markers={markersWithXs}
alignedHxByKey={alignedHXByKey}
alignedHxRowsByKey={alignedHXRowsByKey}
resolvedHxRowsByKey={resolvedHxRowsByKey}
onResolveHxX={setResolvedHxX}
hxXsByRow={hxXsByRow}
globalColumns={columnXs}
unitOpSide={streamUnitOpSide}
unitOpLayout="EVEN"
onShowHover={show}
onHideHover={hide}
hoverBuilders={buildContent}
lookup={{ sdeById, segmentsBySdeId }}
/>
);
})}
</g>
{/* Hx lines and pinch line rendered OVER the stream lines. */}
<g>
<ExchangerLines
streamYPositions={streamYPositionsForHXLines}
streamIndexBySdeId={streamIndexBySdeId}
alignedHXByKey={alignedHXByKey}
alignedHXRowsByKey={alignedHXRowsByKey}
streamBlockHeight={STREAM_BLOCK_HEIGHT}
/>
{/* CURENTLY: if there is pinch temp info, show pinch line, otherwise don't.
BUT: maybe we want to change this so that pinch temp MUST be claculated before diagram even renders?
*/}
{pinchTemps && (
<PinchLine
x={pinchX}
height={verticalLayouts.calculatedSvgHeight}
onShowHover={show}
onHideHover={hide}
hoverBuilders={buildContent}
hotPinch={pinchTemps?.hotPinch}
coldPinch={pinchTemps?.coldPinch}
/>
)}
</g>
{/* Allow svg elements to show hover cards. */}
<HoverLayer
svgWidth={svgWidth || 0}
svgHeight={verticalLayouts.finalSvgHeight || 0}
/>
</svg>
</div>
</ScrollArea>
);
}
|