feat: 添加 2D/3D 地图切换与坐标偏移功能
- 新增 WorldMap 组件,支持 2D 世界地图视图 - 主页添加 2D/3D 视图切换按钮 - 实现确定性坐标偏移算法,分散同城用户位置 - 更新 heatmap 和 register API 使用坐标偏移
This commit is contained in:
@@ -3,7 +3,7 @@
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import { useState } from "react";
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import dynamic from "next/dynamic";
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import { useTranslations } from "next-intl";
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import { Map } from "lucide-react";
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import { Globe, Map } from "lucide-react";
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import { Navbar } from "@/components/layout/navbar";
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import { InstallBanner } from "@/components/layout/install-banner";
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import { ParticleBg } from "@/components/layout/particle-bg";
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@@ -14,20 +14,29 @@ import { ClawFeed } from "@/components/dashboard/claw-feed";
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import { RegionRanking } from "@/components/dashboard/region-ranking";
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import { cn } from "@/lib/utils";
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const ContinentMap = dynamic(
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const WorldMap = dynamic(
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() =>
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import("@/components/map/continent-map").then((m) => ({
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default: m.ContinentMap,
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import("@/components/map/world-map").then((m) => ({
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default: m.WorldMap,
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})),
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{ ssr: false }
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{
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ssr: false,
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loading: () => (
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<div className="flex h-full items-center justify-center">
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<div className="flex flex-col items-center gap-3">
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<div className="h-8 w-8 animate-spin rounded-full border-2 border-[var(--accent-cyan)] border-t-transparent" />
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<span className="font-mono text-xs text-[var(--text-muted)]">Loading map...</span>
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</div>
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</div>
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),
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}
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);
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const continentSlugs = ["asia", "europe", "americas", "africa", "oceania"] as const;
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type ViewMode = "2d" | "3d";
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export default function HomePage() {
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const [activeContinent, setActiveContinent] = useState<string>("asia");
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const tContinents = useTranslations("continents");
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const tRegion = useTranslations("regionExplorer");
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const [viewMode, setViewMode] = useState<ViewMode>("2d");
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const tNavbar = useTranslations("navbar");
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return (
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<div className="relative min-h-screen">
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@@ -35,11 +44,12 @@ export default function HomePage() {
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<Navbar />
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<main className="relative z-10 mx-auto max-w-[1800px] px-4 pt-20 pb-8">
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{/* Section 1: Globe + Dashboard */}
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{/* Section 1: Main Map View + Dashboard */}
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<section className="min-h-[calc(100vh-5rem)]">
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<div className="mb-4">
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<InstallBanner />
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</div>
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<div className="grid gap-4 lg:grid-cols-[280px_1fr_280px]">
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{/* Left Panel */}
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<div className="flex flex-col gap-4">
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@@ -47,11 +57,49 @@ export default function HomePage() {
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<RegionRanking />
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</div>
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{/* Center - Globe + Timeline */}
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{/* Center - Map/Globe + Timeline */}
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<div className="flex flex-col gap-4">
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<div className="h-[500px] lg:h-[600px]">
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<GlobeView />
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{/* View Switcher + Map Container */}
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<div className="relative h-[500px] lg:h-[600px]">
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{/* View Mode Toggle */}
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<div className="absolute left-4 top-4 z-20 flex rounded-lg border border-white/10 bg-[var(--bg-card)]/90 p-1 backdrop-blur-sm">
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<button
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onClick={() => setViewMode("2d")}
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className={cn(
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"flex items-center gap-1.5 rounded-md px-3 py-1.5 text-xs font-medium transition-all",
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viewMode === "2d"
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? "bg-[var(--accent-cyan)]/20 text-[var(--accent-cyan)]"
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: "text-[var(--text-muted)] hover:text-[var(--text-secondary)]"
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)}
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>
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<Map className="h-3.5 w-3.5" />
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{tNavbar("map")}
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</button>
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<button
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onClick={() => setViewMode("3d")}
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className={cn(
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"flex items-center gap-1.5 rounded-md px-3 py-1.5 text-xs font-medium transition-all",
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viewMode === "3d"
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? "bg-[var(--accent-cyan)]/20 text-[var(--accent-cyan)]"
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: "text-[var(--text-muted)] hover:text-[var(--text-secondary)]"
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)}
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>
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<Globe className="h-3.5 w-3.5" />
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{tNavbar("globe")}
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</button>
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</div>
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{/* Map View */}
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{viewMode === "2d" && (
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<WorldMap className="h-full w-full" />
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)}
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{/* Globe View */}
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{viewMode === "3d" && (
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<GlobeView />
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)}
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</div>
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<ActivityTimeline />
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</div>
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@@ -61,47 +109,6 @@ export default function HomePage() {
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</div>
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</div>
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</section>
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{/* Section 2: Region Explorer */}
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<section className="mt-8">
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<div className="mb-4 flex items-center justify-between">
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<h2
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className="flex items-center gap-2 font-mono text-2xl font-bold"
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style={{
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color: "var(--accent-cyan)",
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textShadow: "var(--glow-cyan)",
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}}
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>
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<Map className="h-5 w-5" />
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{tRegion("title")}
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</h2>
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</div>
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{/* Continent Tabs */}
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<div className="mb-4 flex flex-wrap gap-2">
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{continentSlugs.map((slug) => (
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<button
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key={slug}
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onClick={() => setActiveContinent(slug)}
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className={cn(
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"rounded-lg border px-4 py-2 text-sm font-medium transition-all",
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activeContinent === slug
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? "border-[var(--accent-cyan)]/30 bg-[var(--accent-cyan)]/10 text-[var(--accent-cyan)]"
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: "border-white/5 text-[var(--text-muted)] hover:border-white/10 hover:text-[var(--text-secondary)]"
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)}
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>
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{tContinents(slug)}
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</button>
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))}
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</div>
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{/* Map — explicit height so MapLibre can render */}
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<ContinentMap
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key={activeContinent}
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slug={activeContinent}
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className="h-[calc(100vh-14rem)]"
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/>
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</section>
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</main>
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</div>
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);
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@@ -1,8 +1,9 @@
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import { NextResponse } from "next/server";
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import { and, isNotNull, sql } from "drizzle-orm";
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import { and, isNotNull } from "drizzle-orm";
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import { db } from "@/lib/db";
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import { claws } from "@/lib/db/schema";
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import { getCacheHeatmap, setCacheHeatmap } from "@/lib/redis";
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import { applyDeterministicOffset } from "@/lib/geo/offset";
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export async function GET() {
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try {
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@@ -13,31 +14,7 @@ export async function GET() {
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const fiveMinutesAgo = new Date(Date.now() - 5 * 60 * 1000);
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// Query all claws with coordinates, grouped by location
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const locationRows = await db
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.select({
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city: claws.city,
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country: claws.country,
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latitude: claws.latitude,
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longitude: claws.longitude,
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count: sql<number>`count(*)`,
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onlineCount: sql<number>`sum(case when ${claws.lastHeartbeat} >= ${fiveMinutesAgo} then 1 else 0 end)`,
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})
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.from(claws)
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.where(
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and(
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isNotNull(claws.latitude),
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isNotNull(claws.longitude)
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)
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)
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.groupBy(
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claws.city,
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claws.country,
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claws.latitude,
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claws.longitude
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);
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// Fetch individual claw details for all claws with coordinates
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// Fetch all claws with base coordinates
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const clawDetails = await db
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.select({
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id: claws.id,
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@@ -56,30 +33,56 @@ export async function GET() {
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)
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);
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// Group claw details by location key
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const clawsByLocation = new Map<string, Array<{ id: string; name: string; isOnline: boolean }>>();
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// Apply deterministic offset to each claw and group by unique coordinates
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const pointMap = new Map<string, {
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lat: number;
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lng: number;
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city: string | null;
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country: string | null;
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claws: Array<{ id: string; name: string; isOnline: boolean }>;
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onlineCount: number;
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}>();
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for (const claw of clawDetails) {
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const key = `${claw.latitude}:${claw.longitude}`;
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if (!claw.latitude || !claw.longitude) continue;
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const baseLat = Number(claw.latitude);
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const baseLng = Number(claw.longitude);
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// Apply deterministic offset based on claw ID
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const offset = applyDeterministicOffset(baseLat, baseLng, claw.id);
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const isOnline = claw.lastHeartbeat ? claw.lastHeartbeat >= fiveMinutesAgo : false;
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const list = clawsByLocation.get(key) ?? [];
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list.push({ id: claw.id, name: claw.name, isOnline });
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clawsByLocation.set(key, list);
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// Use rounded coordinates as key for grouping (within ~100m)
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const key = `${offset.lat.toFixed(4)}:${offset.lng.toFixed(4)}`;
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const existing = pointMap.get(key);
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if (existing) {
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existing.claws.push({ id: claw.id, name: claw.name, isOnline });
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if (isOnline) existing.onlineCount++;
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} else {
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pointMap.set(key, {
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lat: offset.lat,
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lng: offset.lng,
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city: claw.city,
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country: claw.country,
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claws: [{ id: claw.id, name: claw.name, isOnline }],
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onlineCount: isOnline ? 1 : 0,
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});
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}
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}
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const points = locationRows.map((row) => {
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const key = `${row.latitude}:${row.longitude}`;
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const clawList = (clawsByLocation.get(key) ?? []).slice(0, 20);
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return {
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lat: Number(row.latitude),
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lng: Number(row.longitude),
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weight: row.count,
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clawCount: row.count,
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onlineCount: Number(row.onlineCount ?? 0),
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city: row.city,
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country: row.country,
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claws: clawList,
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};
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});
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// Convert map to array of points
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const points = Array.from(pointMap.values()).map((point) => ({
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lat: point.lat,
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lng: point.lng,
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weight: point.claws.length,
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clawCount: point.claws.length,
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onlineCount: point.onlineCount,
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city: point.city,
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country: point.country,
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claws: point.claws.slice(0, 20), // Limit to 20 claws per point for display
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}));
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const lastUpdated = new Date().toISOString();
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const responseData = { points, lastUpdated };
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@@ -11,6 +11,7 @@ import {
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} from "@/lib/redis";
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import { generateApiKey } from "@/lib/auth/api-key";
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import { getGeoLocation } from "@/lib/geo/ip-location";
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import { applyDeterministicOffset } from "@/lib/geo/offset";
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import { registerSchema } from "@/lib/validators/schemas";
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function getClientIp(req: NextRequest): string {
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@@ -39,6 +40,15 @@ export async function POST(req: NextRequest) {
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const geo = await getGeoLocation(clientIp);
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const now = new Date();
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// Apply deterministic offset to spread out users in the same city
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let finalLat: number | null = null;
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let finalLng: number | null = null;
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if (geo) {
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const offset = applyDeterministicOffset(geo.latitude, geo.longitude, clawId);
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finalLat = offset.lat;
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finalLng = offset.lng;
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}
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await db.insert(claws).values({
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id: clawId,
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apiKey,
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@@ -46,8 +56,8 @@ export async function POST(req: NextRequest) {
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model: model ?? null,
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platform: platform ?? null,
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ip: clientIp,
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latitude: geo ? String(geo.latitude) : null,
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longitude: geo ? String(geo.longitude) : null,
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latitude: finalLat !== null ? String(finalLat) : null,
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longitude: finalLng !== null ? String(finalLng) : null,
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city: geo?.city ?? null,
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country: geo?.country ?? null,
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countryCode: geo?.countryCode ?? null,
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319
components/map/world-map.tsx
Normal file
319
components/map/world-map.tsx
Normal file
@@ -0,0 +1,319 @@
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"use client";
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import { useState, useMemo, useCallback } from "react";
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import { useLocale } from "next-intl";
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import Map, { Source, Layer, Popup, NavigationControl } from "react-map-gl/maplibre";
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import type { MapLayerMouseEvent, LngLatLike, MapRef } from "react-map-gl/maplibre";
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import type { LayerSpecification } from "maplibre-gl";
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import "maplibre-gl/dist/maplibre-gl.css";
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import { useHeatmapData, type HeatmapPoint } from "@/hooks/use-heatmap-data";
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import { cn } from "@/lib/utils";
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import { MapPopup } from "./map-popup";
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const CARTO_STYLE =
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"https://basemaps.cartocdn.com/gl/dark-matter-gl-style/style.json";
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// Generate claw icon as ImageData using Canvas
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function createClawIconImage(): HTMLImageElement | null {
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if (typeof document === "undefined") return null;
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const canvas = document.createElement("canvas");
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canvas.width = 64;
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canvas.height = 64;
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const ctx = canvas.getContext("2d");
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if (!ctx) return null;
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// Draw lobster body
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ctx.fillStyle = "#ff6b35";
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ctx.beginPath();
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ctx.ellipse(32, 38, 12, 18, 0, 0, Math.PI * 2);
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ctx.fill();
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// Tail segments
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ctx.fillStyle = "#e55a2b";
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ctx.beginPath();
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ctx.ellipse(32, 54, 8, 6, 0, 0, Math.PI * 2);
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ctx.fill();
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ctx.fillStyle = "#cc4a1f";
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ctx.beginPath();
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ctx.ellipse(32, 60, 5, 4, 0, 0, Math.PI * 2);
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ctx.fill();
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// Head
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ctx.fillStyle = "#ff6b35";
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ctx.beginPath();
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ctx.ellipse(32, 22, 10, 8, 0, 0, Math.PI * 2);
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ctx.fill();
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// Eyes
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ctx.fillStyle = "#1a1a2e";
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ctx.beginPath();
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ctx.arc(27, 18, 3, 0, Math.PI * 2);
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ctx.fill();
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ctx.beginPath();
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ctx.arc(37, 18, 3, 0, Math.PI * 2);
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ctx.fill();
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// Eye highlights
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ctx.fillStyle = "#fff";
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ctx.beginPath();
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ctx.arc(27.5, 17, 1, 0, Math.PI * 2);
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ctx.fill();
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ctx.beginPath();
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ctx.arc(37.5, 17, 1, 0, Math.PI * 2);
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ctx.fill();
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// Antennae
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ctx.strokeStyle = "#ff6b35";
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ctx.lineWidth = 2;
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ctx.lineCap = "round";
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ctx.beginPath();
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ctx.moveTo(24, 14);
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ctx.quadraticCurveTo(18, 8, 14, 4);
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ctx.stroke();
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ctx.beginPath();
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ctx.moveTo(40, 14);
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ctx.quadraticCurveTo(46, 8, 50, 4);
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ctx.stroke();
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// Left claw
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ctx.fillStyle = "#ff6b35";
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ctx.beginPath();
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ctx.ellipse(14, 32, 8, 6, 0, 0, Math.PI * 2);
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ctx.fill();
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ctx.beginPath();
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ctx.ellipse(10, 28, 5, 4, 0, 0, Math.PI * 2);
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ctx.fill();
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||||
ctx.beginPath();
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ctx.ellipse(10, 36, 5, 4, 0, 0, Math.PI * 2);
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ctx.fill();
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// Right claw
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ctx.beginPath();
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ctx.ellipse(50, 32, 8, 6, 0, 0, Math.PI * 2);
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ctx.fill();
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||||
ctx.beginPath();
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ctx.ellipse(54, 28, 5, 4, 0, 0, Math.PI * 2);
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ctx.fill();
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||||
ctx.beginPath();
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ctx.ellipse(54, 36, 5, 4, 0, 0, Math.PI * 2);
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ctx.fill();
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// Legs
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ctx.strokeStyle = "#e55a2b";
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ctx.lineWidth = 2;
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||||
ctx.beginPath();
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||||
ctx.moveTo(22, 40);
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||||
ctx.lineTo(14, 44);
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||||
ctx.stroke();
|
||||
ctx.beginPath();
|
||||
ctx.moveTo(22, 46);
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||||
ctx.lineTo(14, 52);
|
||||
ctx.stroke();
|
||||
ctx.beginPath();
|
||||
ctx.moveTo(42, 40);
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||||
ctx.lineTo(50, 44);
|
||||
ctx.stroke();
|
||||
ctx.beginPath();
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||||
ctx.moveTo(42, 46);
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||||
ctx.lineTo(50, 52);
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ctx.stroke();
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||||
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||||
const img = new Image();
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||||
img.src = canvas.toDataURL();
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||||
return img;
|
||||
}
|
||||
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||||
const heatmapLayer: LayerSpecification = {
|
||||
id: "claw-heat",
|
||||
type: "heatmap",
|
||||
source: "claws",
|
||||
paint: {
|
||||
"heatmap-weight": ["get", "weight"],
|
||||
"heatmap-intensity": 1,
|
||||
"heatmap-radius": 30,
|
||||
"heatmap-opacity": 0.6,
|
||||
"heatmap-color": [
|
||||
"interpolate",
|
||||
["linear"],
|
||||
["heatmap-density"],
|
||||
0,
|
||||
"rgba(0,0,0,0)",
|
||||
0.2,
|
||||
"rgba(0,240,255,0.15)",
|
||||
0.4,
|
||||
"rgba(0,240,255,0.3)",
|
||||
0.6,
|
||||
"rgba(0,200,220,0.5)",
|
||||
1,
|
||||
"rgba(0,240,255,0.8)",
|
||||
],
|
||||
},
|
||||
};
|
||||
|
||||
const symbolLayer: LayerSpecification = {
|
||||
id: "claw-icons",
|
||||
type: "symbol",
|
||||
source: "claws",
|
||||
layout: {
|
||||
"icon-image": "claw-icon",
|
||||
"icon-size": [
|
||||
"interpolate",
|
||||
["linear"],
|
||||
["get", "weight"],
|
||||
1,
|
||||
0.3,
|
||||
5,
|
||||
0.5,
|
||||
10,
|
||||
0.7,
|
||||
],
|
||||
"icon-allow-overlap": true,
|
||||
"icon-anchor": "center",
|
||||
},
|
||||
paint: {
|
||||
"icon-opacity": [
|
||||
"case",
|
||||
[">", ["get", "onlineCount"], 0],
|
||||
1,
|
||||
0.4,
|
||||
],
|
||||
},
|
||||
};
|
||||
|
||||
interface WorldMapProps {
|
||||
className?: string;
|
||||
}
|
||||
|
||||
export function WorldMap({ className }: WorldMapProps) {
|
||||
const locale = useLocale();
|
||||
const { points } = useHeatmapData(30000);
|
||||
const [popupPoint, setPopupPoint] = useState<HeatmapPoint | null>(null);
|
||||
const [popupLngLat, setPopupLngLat] = useState<LngLatLike | null>(null);
|
||||
|
||||
// Build a MapLibre expression: coalesce(get("name:zh"), get("name_en"), get("name"))
|
||||
// For English, just use name_en with name fallback.
|
||||
const localizedTextField = useMemo(
|
||||
() =>
|
||||
locale === "en"
|
||||
? ["coalesce", ["get", "name_en"], ["get", "name"]]
|
||||
: ["coalesce", ["get", `name:${locale}`], ["get", "name_en"], ["get", "name"]],
|
||||
[locale]
|
||||
);
|
||||
|
||||
const handleLoad = useCallback(
|
||||
(e: { target: MapRef["getMap"] extends () => infer M ? M : never }) => {
|
||||
const map = e.target;
|
||||
|
||||
// Create and load claw icon
|
||||
const iconImg = createClawIconImage();
|
||||
if (iconImg) {
|
||||
iconImg.onload = () => {
|
||||
if (!map.hasImage("claw-icon")) {
|
||||
map.addImage("claw-icon", iconImg);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
for (const layer of map.getStyle().layers ?? []) {
|
||||
if (layer.type === "symbol") {
|
||||
const tf = map.getLayoutProperty(layer.id, "text-field");
|
||||
if (tf != null) {
|
||||
map.setLayoutProperty(layer.id, "text-field", localizedTextField);
|
||||
}
|
||||
}
|
||||
}
|
||||
},
|
||||
[localizedTextField]
|
||||
);
|
||||
|
||||
const geojson = useMemo(() => {
|
||||
const features = points.map((p) => ({
|
||||
type: "Feature" as const,
|
||||
geometry: {
|
||||
type: "Point" as const,
|
||||
coordinates: [p.lng, p.lat],
|
||||
},
|
||||
properties: {
|
||||
weight: p.weight,
|
||||
clawCount: p.clawCount,
|
||||
onlineCount: p.onlineCount,
|
||||
city: p.city,
|
||||
country: p.country,
|
||||
claws: JSON.stringify(p.claws),
|
||||
},
|
||||
}));
|
||||
return {
|
||||
type: "FeatureCollection" as const,
|
||||
features,
|
||||
};
|
||||
}, [points]);
|
||||
|
||||
const handleClick = useCallback(
|
||||
(e: MapLayerMouseEvent) => {
|
||||
const feature = e.features?.[0];
|
||||
if (!feature || feature.geometry.type !== "Point") {
|
||||
setPopupPoint(null);
|
||||
return;
|
||||
}
|
||||
const props = feature.properties;
|
||||
const [lng, lat] = feature.geometry.coordinates;
|
||||
const matched = points.find(
|
||||
(p) => p.city === props.city && p.country === props.country
|
||||
);
|
||||
if (matched) {
|
||||
setPopupPoint(matched);
|
||||
setPopupLngLat([lng, lat]);
|
||||
}
|
||||
},
|
||||
[points]
|
||||
);
|
||||
|
||||
return (
|
||||
<div className={cn("overflow-hidden rounded-xl border border-white/5 bg-[var(--bg-secondary)]", className)}>
|
||||
<Map
|
||||
initialViewState={{
|
||||
longitude: 0,
|
||||
latitude: 20,
|
||||
zoom: 1.5,
|
||||
}}
|
||||
style={{ width: "100%", height: "100%" }}
|
||||
mapStyle={CARTO_STYLE}
|
||||
interactiveLayerIds={["claw-icons"]}
|
||||
onClick={handleClick}
|
||||
onLoad={handleLoad}
|
||||
cursor="default"
|
||||
attributionControl={false}
|
||||
minZoom={1}
|
||||
maxZoom={8}
|
||||
>
|
||||
<NavigationControl
|
||||
position="bottom-right"
|
||||
showCompass={false}
|
||||
/>
|
||||
|
||||
<Source id="claws" type="geojson" data={geojson}>
|
||||
<Layer {...heatmapLayer} />
|
||||
<Layer {...symbolLayer} />
|
||||
</Source>
|
||||
|
||||
{popupPoint && popupLngLat && (
|
||||
<Popup
|
||||
longitude={(popupLngLat as [number, number])[0]}
|
||||
latitude={(popupLngLat as [number, number])[1]}
|
||||
onClose={() => setPopupPoint(null)}
|
||||
closeButton={false}
|
||||
className="maplibre-dark-popup"
|
||||
maxWidth="280px"
|
||||
>
|
||||
<MapPopup
|
||||
point={popupPoint}
|
||||
onClose={() => setPopupPoint(null)}
|
||||
/>
|
||||
</Popup>
|
||||
)}
|
||||
</Map>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
72
lib/geo/offset.ts
Normal file
72
lib/geo/offset.ts
Normal file
@@ -0,0 +1,72 @@
|
||||
/**
|
||||
* Generate a deterministic offset based on a unique identifier.
|
||||
* This ensures the same ID always gets the same offset,
|
||||
* allowing multiple users in the same city to be spread out
|
||||
* while maintaining consistent positions.
|
||||
*
|
||||
* @param id - Unique identifier (e.g., claw ID)
|
||||
* @param maxOffsetKm - Maximum offset in kilometers (default: 15km)
|
||||
* @returns Object with lat and lng offsets in degrees
|
||||
*/
|
||||
export function generateDeterministicOffset(
|
||||
id: string,
|
||||
maxOffsetKm: number = 15
|
||||
): { latOffset: number; lngOffset: number } {
|
||||
// Simple hash function to convert string to number
|
||||
let hash = 0;
|
||||
for (let i = 0; i < id.length; i++) {
|
||||
const char = id.charCodeAt(i);
|
||||
hash = ((hash << 5) - hash) + char;
|
||||
hash = hash & hash; // Convert to 32-bit integer
|
||||
}
|
||||
|
||||
// Use the hash to generate two pseudo-random values between -1 and 1
|
||||
// Using simple modulo arithmetic for determinism
|
||||
const seed1 = Math.abs(hash % 10000) / 10000; // 0 to 1
|
||||
const seed2 = Math.abs((hash >> 8) % 10000) / 10000; // 0 to 1
|
||||
|
||||
// Convert to -1 to 1 range with better distribution
|
||||
const factor1 = (seed1 * 2 - 1);
|
||||
const factor2 = (seed2 * 2 - 1);
|
||||
|
||||
// Convert km to degrees (approximate)
|
||||
// 1 degree latitude ≈ 111km
|
||||
// 1 degree longitude varies by latitude (cos(lat) * 111km)
|
||||
// We use a rough average here
|
||||
const kmPerDegree = 111;
|
||||
const maxOffsetDegrees = maxOffsetKm / kmPerDegree;
|
||||
|
||||
return {
|
||||
latOffset: factor1 * maxOffsetDegrees,
|
||||
lngOffset: factor2 * maxOffsetDegrees,
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply deterministic offset to coordinates.
|
||||
* This spreads out users in the same city while keeping
|
||||
* each user's position consistent.
|
||||
*
|
||||
* @param lat - Original latitude
|
||||
* @param lng - Original longitude
|
||||
* @param id - Unique identifier for deterministic offset
|
||||
* @param maxOffsetKm - Maximum offset in kilometers
|
||||
* @returns New coordinates with offset applied
|
||||
*/
|
||||
export function applyDeterministicOffset(
|
||||
lat: number,
|
||||
lng: number,
|
||||
id: string,
|
||||
maxOffsetKm: number = 15
|
||||
): { lat: number; lng: number } {
|
||||
const { latOffset, lngOffset } = generateDeterministicOffset(id, maxOffsetKm);
|
||||
|
||||
// Adjust longitude offset based on latitude
|
||||
// (longitude degrees get smaller towards poles)
|
||||
const lngCorrection = Math.cos((lat * Math.PI) / 180);
|
||||
|
||||
return {
|
||||
lat: lat + latOffset,
|
||||
lng: lng + lngOffset * lngCorrection,
|
||||
};
|
||||
}
|
||||
Reference in New Issue
Block a user