475 lines
17 KiB
TypeScript
475 lines
17 KiB
TypeScript
'use client';
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import { useEffect, useRef, useState } from 'react';
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import { useContainerWidth } from '@/lib/useContainerWidth';
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import PlayerChipList from './PlayerChipList';
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interface Point {
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t: string;
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tEpoch: number;
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players: number;
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mapName: string | null;
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}
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interface MapBoundary {
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mapId: number;
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mapName: string;
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tEpoch: number;
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}
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interface PlayerChip {
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steamid: string;
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name: string;
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avatarUrl: string;
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}
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const HEIGHT = 320;
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const PAD_LEFT = 36;
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const PAD_RIGHT = 8;
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const PAD_TOP = 8;
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const PAD_BOTTOM = 30;
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const Y_MAX = 64; // game's hard player cap
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const MIN_ZOOM_SPAN_MS = 5 * 60_000; // don't let scroll-zoom go tighter than 5 minutes
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function toLocalInputValue(d: Date): string {
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const pad = (n: number) => String(n).padStart(2, '0');
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return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}T${pad(d.getHours())}:${pad(d.getMinutes())}`;
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}
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export default function PopulationChart() {
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const { ref: containerRef, width } = useContainerWidth<HTMLDivElement>();
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const now = new Date();
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const dayAgo = new Date(now.getTime() - 24 * 60 * 60 * 1000);
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const [start, setStart] = useState(toLocalInputValue(dayAgo));
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const [end, setEnd] = useState(toLocalInputValue(now));
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const [points, setPoints] = useState<Point[]>([]);
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const [mapBoundaries, setMapBoundaries] = useState<MapBoundary[]>([]);
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const [loading, setLoading] = useState(false);
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const [error, setError] = useState<string | null>(null);
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// Full bounds of whatever's currently fetched (via the calendar Start/End)
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const [dataMinEpoch, setDataMinEpoch] = useState(0);
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const [dataMaxEpoch, setDataMaxEpoch] = useState(0);
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// Currently VISIBLE window — what scroll-to-zoom / drag-to-pan adjusts.
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// Starts equal to the full fetched range and narrows/shifts from there.
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const [viewStart, setViewStart] = useState(0);
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const [viewEnd, setViewEnd] = useState(0);
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const dragStartRef = useRef<{ x: number; viewStart: number; viewEnd: number } | null>(null);
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const dragMovedRef = useRef(false);
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const [hoverPoint, setHoverPoint] = useState<Point | null>(null);
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const [hoverX, setHoverX] = useState<number | null>(null);
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// Currently online — authoritative, always-live, independent of the chart's date range.
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const [currentPlayers, setCurrentPlayers] = useState<PlayerChip[]>([]);
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const [currentCount, setCurrentCount] = useState<number | null>(null);
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const [loadingCurrent, setLoadingCurrent] = useState(true);
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const [currentUpdatedAt, setCurrentUpdatedAt] = useState<number | null>(null);
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const [secondsAgo, setSecondsAgo] = useState(0);
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// A specific HISTORICAL point clicked on the chart.
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const [selectedPoint, setSelectedPoint] = useState<Point | null>(null);
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const [selectedPlayers, setSelectedPlayers] = useState<PlayerChip[]>([]);
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const [loadingSelected, setLoadingSelected] = useState(false);
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async function load() {
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setLoading(true);
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setError(null);
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try {
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const params = new URLSearchParams({
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start: new Date(start).toISOString(),
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end: new Date(end).toISOString(),
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});
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const res = await fetch(`/api/population?${params.toString()}`);
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if (!res.ok) throw new Error((await res.json()).error ?? 'failed to load');
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const data = await res.json();
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const pts: Point[] = (data.points as any[]).map((p) => ({ ...p, tEpoch: new Date(p.t).getTime() }));
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const bounds: MapBoundary[] = (data.mapBoundaries as any[]).map((b) => ({ ...b, tEpoch: new Date(b.t).getTime() }));
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setPoints(pts);
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setMapBoundaries(bounds);
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if (pts.length > 0) {
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const minE = pts[0].tEpoch;
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const maxE = pts[pts.length - 1].tEpoch;
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setDataMinEpoch(minE);
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setDataMaxEpoch(maxE);
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setViewStart(minE);
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setViewEnd(maxE);
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}
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} catch (e: any) {
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setError(e.message ?? 'something went wrong');
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} finally {
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setLoading(false);
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}
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}
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async function loadCurrentPlayers() {
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setLoadingCurrent(true);
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try {
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const res = await fetch('/api/population/current');
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const data = await res.json();
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setCurrentPlayers(data.players ?? []);
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setCurrentCount(data.count ?? 0);
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setCurrentUpdatedAt(Date.now());
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} catch {
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setCurrentPlayers([]);
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setCurrentCount(null);
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} finally {
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setLoadingCurrent(false);
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}
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}
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useEffect(() => {
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load();
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loadCurrentPlayers();
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const poll = setInterval(loadCurrentPlayers, 30_000);
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return () => clearInterval(poll);
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, []);
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useEffect(() => {
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const tick = setInterval(() => {
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if (currentUpdatedAt) setSecondsAgo(Math.round((Date.now() - currentUpdatedAt) / 1000));
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}, 1000);
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return () => clearInterval(tick);
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}, [currentUpdatedAt]);
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async function loadPlayersAt(point: Point) {
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setSelectedPoint(point);
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setLoadingSelected(true);
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try {
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const res = await fetch(`/api/population/players?at=${encodeURIComponent(point.t)}`);
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const data = await res.json();
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setSelectedPlayers(data.players ?? []);
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} catch {
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setSelectedPlayers([]);
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} finally {
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setLoadingSelected(false);
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}
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}
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const plotWidth = Math.max(0, width - PAD_LEFT - PAD_RIGHT);
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const plotHeight = HEIGHT - PAD_TOP - PAD_BOTTOM;
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function xForEpoch(epoch: number): number {
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if (viewEnd === viewStart) return PAD_LEFT;
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return PAD_LEFT + ((epoch - viewStart) / (viewEnd - viewStart)) * plotWidth;
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}
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function yForValue(v: number): number {
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return PAD_TOP + (1 - Math.min(v, Y_MAX) / Y_MAX) * plotHeight;
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}
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function epochForX(x: number): number {
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if (plotWidth === 0) return viewStart;
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return viewStart + ((x - PAD_LEFT) / plotWidth) * (viewEnd - viewStart);
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}
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// Render a couple of points beyond each edge of the visible window too,
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// so the line doesn't visibly truncate right at the viewport boundary.
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let firstIdx = points.findIndex((p) => p.tEpoch >= viewStart);
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if (firstIdx === -1) firstIdx = points.length - 1;
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let lastIdx = -1;
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for (let i = points.length - 1; i >= 0; i--) {
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if (points[i].tEpoch <= viewEnd) {
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lastIdx = i;
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break;
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}
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}
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const renderStart = Math.max(0, firstIdx - 1);
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const renderEnd = Math.min(points.length - 1, Math.max(lastIdx, firstIdx) + 1);
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const renderPoints = points.length > 0 ? points.slice(renderStart, renderEnd + 1) : [];
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const linePath = renderPoints
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.map((p, i) => `${i === 0 ? 'M' : 'L'} ${xForEpoch(p.tEpoch).toFixed(1)} ${yForValue(p.players).toFixed(1)}`)
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.join(' ');
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const visibleBoundaries = mapBoundaries.filter((b) => b.tEpoch >= viewStart && b.tEpoch <= viewEnd);
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function findNearestPoint(x: number): Point | null {
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if (renderPoints.length === 0) return null;
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const targetEpoch = epochForX(x);
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let nearest = renderPoints[0];
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let bestDist = Math.abs(renderPoints[0].tEpoch - targetEpoch);
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for (const p of renderPoints) {
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const d = Math.abs(p.tEpoch - targetEpoch);
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if (d < bestDist) {
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bestDist = d;
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nearest = p;
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}
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}
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return nearest;
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}
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function handleMouseDown(e: React.MouseEvent<SVGSVGElement>) {
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const rect = e.currentTarget.getBoundingClientRect();
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dragStartRef.current = { x: e.clientX - rect.left, viewStart, viewEnd };
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dragMovedRef.current = false;
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}
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function handleMouseMove(e: React.MouseEvent<SVGSVGElement>) {
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const rect = e.currentTarget.getBoundingClientRect();
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const x = e.clientX - rect.left;
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setHoverX(x);
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setHoverPoint(findNearestPoint(x));
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if (dragStartRef.current) {
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const dx = x - dragStartRef.current.x;
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if (Math.abs(dx) > 3) dragMovedRef.current = true;
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if (dragMovedRef.current && plotWidth > 0) {
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const span = dragStartRef.current.viewEnd - dragStartRef.current.viewStart;
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const epochDelta = -(dx / plotWidth) * span;
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let newStart = dragStartRef.current.viewStart + epochDelta;
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let newEnd = dragStartRef.current.viewEnd + epochDelta;
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if (newStart < dataMinEpoch) {
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newStart = dataMinEpoch;
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newEnd = newStart + span;
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}
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if (newEnd > dataMaxEpoch) {
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newEnd = dataMaxEpoch;
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newStart = newEnd - span;
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}
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setViewStart(newStart);
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setViewEnd(newEnd);
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}
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}
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}
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function handleMouseUp() {
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dragStartRef.current = null;
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}
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function handleMouseLeave() {
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setHoverPoint(null);
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setHoverX(null);
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dragStartRef.current = null;
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}
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function handleClick(e: React.MouseEvent<SVGSVGElement>) {
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if (dragMovedRef.current) {
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dragMovedRef.current = false;
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return; // was a drag, not a click-to-select
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}
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const rect = e.currentTarget.getBoundingClientRect();
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const p = findNearestPoint(e.clientX - rect.left);
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if (p) loadPlayersAt(p);
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}
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function handleWheel(e: React.WheelEvent<SVGSVGElement>) {
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e.preventDefault();
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if (plotWidth === 0) return;
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const rect = e.currentTarget.getBoundingClientRect();
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const x = e.clientX - rect.left;
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const anchorEpoch = epochForX(x);
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const zoomFactor = e.deltaY > 0 ? 1.15 : 1 / 1.15; // scroll down = zoom out, up = zoom in
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const fullSpan = dataMaxEpoch - dataMinEpoch || 1;
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let newSpan = (viewEnd - viewStart) * zoomFactor;
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newSpan = Math.min(newSpan, fullSpan);
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newSpan = Math.max(newSpan, MIN_ZOOM_SPAN_MS);
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const ratio = (anchorEpoch - viewStart) / ((viewEnd - viewStart) || 1);
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let newStart = anchorEpoch - ratio * newSpan;
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let newEnd = newStart + newSpan;
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if (newStart < dataMinEpoch) {
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newStart = dataMinEpoch;
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newEnd = newStart + newSpan;
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}
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if (newEnd > dataMaxEpoch) {
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newEnd = dataMaxEpoch;
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newStart = newEnd - newSpan;
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}
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setViewStart(newStart);
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setViewEnd(newEnd);
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}
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function resetZoom() {
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setViewStart(dataMinEpoch);
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setViewEnd(dataMaxEpoch);
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}
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const isZoomed = viewStart > dataMinEpoch + 1000 || viewEnd < dataMaxEpoch - 1000;
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const yTicks = [0, 16, 32, 48, 64];
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const xTickCount = 5;
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const xTicks =
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viewEnd > viewStart
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? Array.from({ length: xTickCount }, (_, i) => viewStart + (i / (xTickCount - 1)) * (viewEnd - viewStart))
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: [];
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return (
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<div className="panel p-6">
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{/* Currently online — always visible, always live, not tied to the date range below */}
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<div className="mb-6 pb-6 border-b border-base-border">
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<div className="flex items-center justify-between mb-3">
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<div className="flex items-center gap-2">
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<span className="w-2 h-2 rounded-full bg-accent shadow-[0_0_6px_theme(colors.accent.DEFAULT)]" />
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<div className="stat-label">
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Currently online{currentCount != null ? ` — ${currentCount} player${currentCount === 1 ? '' : 's'}` : ''}
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</div>
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</div>
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{currentUpdatedAt && <div className="text-xs text-ink-faint font-mono">updated {secondsAgo}s ago</div>}
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</div>
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<PlayerChipList players={currentPlayers} loading={loadingCurrent} />
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</div>
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<div className="flex flex-wrap items-end justify-between gap-4 mb-4">
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<div>
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<div className="stat-label mb-1">Concurrent players</div>
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<h2 className="text-lg text-ink">Population over time</h2>
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</div>
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<form
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className="flex flex-wrap items-center gap-3"
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onSubmit={(e) => {
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e.preventDefault();
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load();
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}}
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>
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<label className="flex flex-col text-xs text-ink-muted gap-1">
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Start
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<input
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type="datetime-local"
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value={start}
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onChange={(e) => setStart(e.target.value)}
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className="bg-base border border-base-border rounded px-2 py-1 text-ink text-sm font-mono"
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/>
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</label>
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<label className="flex flex-col text-xs text-ink-muted gap-1">
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End
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<input
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type="datetime-local"
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value={end}
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onChange={(e) => setEnd(e.target.value)}
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className="bg-base border border-base-border rounded px-2 py-1 text-ink text-sm font-mono"
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/>
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</label>
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<button
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type="submit"
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className="bg-accent-dim hover:bg-accent hover:text-base text-accent border border-accent/40 rounded px-4 py-2 text-sm font-medium transition-colors self-end"
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>
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Update
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</button>
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</form>
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</div>
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{error && <div className="text-sm text-red-400 mb-4">{error}</div>}
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<div className="flex items-center justify-between gap-4 mb-2">
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<div className="flex items-center gap-1.5 text-xs text-accent">
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<svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
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<path d="M9 9l6 6M9 15l6-6" strokeLinecap="round" />
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<circle cx="12" cy="12" r="9" />
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</svg>
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Scroll to zoom, drag to pan, click a point for who was online
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</div>
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{isZoomed && (
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<button onClick={resetZoom} className="text-xs text-ink-muted hover:text-accent transition-colors underline">
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Reset zoom
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</button>
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)}
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</div>
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<div ref={containerRef} className="w-full relative" style={{ height: HEIGHT }}>
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{loading ? (
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<div className="h-full flex items-center justify-center text-ink-faint text-sm font-mono">loading…</div>
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) : points.length === 0 ? (
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<div className="h-full flex items-center justify-center text-ink-muted text-sm">No data in this range.</div>
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) : (
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<svg
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width={width}
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height={HEIGHT}
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style={{ cursor: 'crosshair', touchAction: 'none' }}
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onMouseDown={handleMouseDown}
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onMouseMove={handleMouseMove}
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onMouseUp={handleMouseUp}
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onMouseLeave={handleMouseLeave}
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onClick={handleClick}
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onWheel={handleWheel}
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>
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{yTicks.map((v) => {
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const y = yForValue(v);
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return (
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<g key={v}>
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<line x1={PAD_LEFT} y1={y} x2={width - PAD_RIGHT} y2={y} stroke="#2A332E" />
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<text x={PAD_LEFT - 6} y={y + 3} textAnchor="end" fontSize={11} fill="#8A9691">
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{v}
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</text>
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</g>
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);
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})}
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{visibleBoundaries.map((b) => (
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<line
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key={b.mapId}
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x1={xForEpoch(b.tEpoch)}
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y1={PAD_TOP}
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x2={xForEpoch(b.tEpoch)}
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y2={PAD_TOP + plotHeight}
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stroke="#4C5652"
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strokeDasharray="3 3"
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/>
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))}
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{xTicks.map((epoch, i) => (
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<text key={i} x={xForEpoch(epoch)} y={HEIGHT - PAD_BOTTOM + 16} textAnchor="middle" fontSize={10} fill="#8A9691">
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{new Date(epoch).toLocaleString(undefined, { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' })}
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</text>
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))}
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<line x1={PAD_LEFT} y1={PAD_TOP + plotHeight} x2={width - PAD_RIGHT} y2={PAD_TOP + plotHeight} stroke="#4C5652" />
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<path d={linePath} fill="none" stroke="#3FD37A" strokeWidth={2} />
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{hoverPoint && (
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<circle
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cx={xForEpoch(hoverPoint.tEpoch)}
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cy={yForValue(hoverPoint.players)}
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r={4}
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fill="#3FD37A"
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stroke="#0B0F0E"
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strokeWidth={1.5}
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/>
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)}
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</svg>
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)}
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{hoverPoint && hoverX != null && !loading && (
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<div
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className="absolute pointer-events-none"
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style={{
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left: Math.min(Math.max(width, 200) - 190, Math.max(0, hoverX + 12)),
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top: Math.max(0, yForValue(hoverPoint.players) - 70),
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background: '#121715',
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border: '1px solid #1F2723',
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borderRadius: 6,
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fontSize: 12,
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padding: '8px 10px',
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whiteSpace: 'nowrap',
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}}
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>
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<div style={{ color: '#8A9691' }}>{new Date(hoverPoint.t).toLocaleString()}</div>
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<div style={{ color: '#3FD37A', marginTop: 2 }}>{hoverPoint.players} players</div>
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{hoverPoint.mapName && <div style={{ color: '#E4EBE7', marginTop: 2 }}>{hoverPoint.mapName}</div>}
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</div>
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)}
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</div>
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{selectedPoint && (
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<div className="mt-4 pt-4 border-t border-base-border">
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<div className="stat-label mb-3">
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Online at {new Date(selectedPoint.t).toLocaleString()}
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{selectedPoint.mapName && (
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<>
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{' '}
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— playing <span className="text-ink">{selectedPoint.mapName}</span>
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</>
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)}{' '}
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({selectedPoint.players} player{selectedPoint.players === 1 ? '' : 's'} — from historical data, may lag slightly)
|
|
</div>
|
|
<PlayerChipList players={selectedPlayers} loading={loadingSelected} />
|
|
</div>
|
|
)}
|
|
</div>
|
|
);
|
|
}
|