swadhinbiswas Rebuild around VPS collector + Kafka + MotherDuck-direct site · 9/11/2026
03cdeca
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import { useMemo } from "react";
import { Map as MapView, MapControls, MapMarker, MarkerContent } from "@/components/ui/map";
type Row = Record<string, unknown>;
const COORD_PAIRS: [string, string][] = [
["latitude_deg", "longitude_deg"],
["lat", "lon"],
["latitude", "longitude"],
];
export interface GeoColumns {
lat: string;
lon: string;
}
/** Detect a supported latitude/longitude column pair in a dataset. */
export function detectGeoColumns(rows: Row[]): GeoColumns | null {
if (!rows.length) return null;
const keys = new Set(Object.keys(rows[0]));
for (const [lat, lon] of COORD_PAIRS) {
if (keys.has(lat) && keys.has(lon)) return { lat, lon };
}
return null;
}
/** Numeric columns usable as a colour/size metric (excludes coordinates). */
export function numericColumns(rows: Row[], geo: GeoColumns | null): string[] {
if (!rows.length) return [];
return Object.keys(rows[0]).filter((k) => {
if (geo && (k === geo.lat || k === geo.lon)) return false;
const sample = rows.find((r) => r[k] !== null && r[k] !== undefined);
return sample ? typeof sample[k] === "number" : false;
});
}
/** Map a value in [min, max] to an emerald → amber → red scale. */
function colorForValue(value: number, min: number, max: number): string {
if (max <= min) return "#34d399";
const t = Math.max(0, Math.min(1, (value - min) / (max - min)));
const hue = (1 - t) * 155; // 155° emerald → 0° red
return `hsl(${hue}, 72%, 55%)`;
}
interface GeoMapProps {
rows: Row[];
metric?: string | null;
height?: number;
maxPoints?: number;
center?: [number, number];
zoom?: number;
labelKey?: string | null;
}
export function GeoMap({
rows,
metric,
height = 460,
maxPoints = 1500,
center = [10, 50],
zoom = 3.2,
labelKey,
}: GeoMapProps) {
const geo = useMemo(() => detectGeoColumns(rows), [rows]);
const { points, mappable } = useMemo(() => {
if (!geo) return { points: [], mappable: 0 };
const all: { lat: number; lon: number; value: number | null; label: string }[] = [];
for (const r of rows) {
const lat = Number(r[geo.lat]);
const lon = Number(r[geo.lon]);
if (!Number.isFinite(lat) || !Number.isFinite(lon)) continue;
if (lat === 0 && lon === 0) continue;
const raw = metric ? r[metric] : null;
all.push({
lat,
lon,
value: typeof raw === "number" ? raw : null,
label: labelKey && r[labelKey] !== undefined ? String(r[labelKey]) : "",
});
}
return { points: all.slice(0, maxPoints), mappable: all.length };
}, [rows, geo, metric, labelKey, maxPoints]);
const { min, max } = useMemo(() => {
const values = points.map((p) => p.value).filter((v): v is number => v !== null);
if (!values.length) return { min: 0, max: 1 };
return { min: Math.min(...values), max: Math.max(...values) };
}, [points]);
if (!geo || !points.length) {
return (
<div
style={{ height }}
className="grid place-items-center rounded-lg border border-white/10 bg-white/[0.02] text-xs text-zinc-500"
>
No mappable coordinate records in this dataset.
</div>
);
}
const hasMetric = Boolean(metric) && points.some((p) => p.value !== null);
return (
<div style={{ height }} className="relative overflow-hidden rounded-lg border border-white/10">
<MapView theme="dark" center={center} zoom={zoom} className="h-full w-full">
<MapControls showZoom showCompass />
{points.map((p, i) => {
const color =
hasMetric && p.value !== null ? colorForValue(p.value, min, max) : "#34d399";
const valueText =
metric && p.value !== null
? `${metric}: ${p.value.toLocaleString(undefined, { maximumFractionDigits: 1 })}`
: "";
return (
<MapMarker key={i} longitude={p.lon} latitude={p.lat}>
<MarkerContent>
<span
title={[p.label, valueText].filter(Boolean).join(" · ")}
className="block rounded-full"
style={{
width: 7,
height: 7,
background: color,
boxShadow: `0 0 0 1.5px rgba(5,7,13,0.7), 0 0 8px ${color}66`,
}}
/>
</MarkerContent>
</MapMarker>
);
})}
</MapView>
<div className="pointer-events-none absolute bottom-2 left-2 rounded-md border border-white/10 bg-black/80 px-2.5 py-1.5 text-[10px] text-zinc-300 backdrop-blur">
<div className="mono">
{points.length.toLocaleString()} points
{mappable > points.length ? ` of ${mappable.toLocaleString()} (capped)` : ""}
</div>
{hasMetric && (
<div className="mt-1 flex items-center gap-2">
<span className="flex items-center gap-1">
<span className="h-2 w-2 rounded-full" style={{ background: colorForValue(min, min, max) }} />
{min.toLocaleString(undefined, { maximumFractionDigits: 1 })}
</span>
<span className="h-1 w-8 rounded-full bg-gradient-to-r from-emerald-400 via-amber-400 to-red-400" />
<span className="flex items-center gap-1">
<span className="h-2 w-2 rounded-full" style={{ background: colorForValue(max, min, max) }} />
{max.toLocaleString(undefined, { maximumFractionDigits: 1 })}
</span>
</div>
)}
</div>
</div>
);
}