'use client';

import createGlobe from 'cobe';
import { useEffect, useRef, useState } from 'react';
import { Globe } from 'lucide-react';

export function GlobeCard() {
    const canvasRef = useRef<HTMLCanvasElement>(null);
    const [visitorStats, setVisitorStats] = useState({
        total: 0,
        active24h: 0,
        active7d: 0,
        locations: [],
    });

    useEffect(() => {
        async function fetchVisitors() {
            try {
                const res = await fetch('/api/visitors');
                const data = await res.json();
                setVisitorStats({
                    total: data.totalVisitors || 0,
                    active24h: data.active24h || 0,
                    active7d: data.active7d || 0,
                    locations: data.locations || [],
                });
            } catch (e) {
                console.error('Failed to load visitors', e);
            }
        }
        fetchVisitors();
        const interval = setInterval(fetchVisitors, 30000);
        return () => clearInterval(interval);
    }, []);

    useEffect(() => {
        let phi = 0;

        if (!canvasRef.current) return;

        const globe = createGlobe(canvasRef.current, {
            devicePixelRatio: 2,
            width: 600 * 2,
            height: 600 * 2,
            phi: 0,
            theta: 0,
            dark: 1,
            diffuse: 1.2,
            mapSamples: 16000,
            mapBrightness: 6,
            baseColor: [0.3, 0.3, 0.3],
            markerColor: [0.1, 0.8, 1],
            glowColor: [0.1, 0.1, 0.2],
            markers: visitorStats.locations,
            onRender: (state) => {
                state.phi = phi;
                phi += 0.01;
            },
        });

        return () => {
            globe.destroy();
        };
    }, [visitorStats.locations]);

    return (
        <div className="col-span-1 md:col-span-2 lg:col-span-2 row-span-2 bg-neutral-900 border border-neutral-800 rounded-xl relative overflow-hidden group hover:border-neutral-700 transition-colors">
            <div className="absolute top-6 left-6 z-10 pointer-events-none">
                <div className="flex items-center gap-2 text-neutral-400">
                    <Globe size={18} />
                    <span className="text-sm font-medium">Visitor Map</span>
                </div>
                <div className="mt-4 space-y-3">
                    <div>
                        <span className="text-2xl font-bold text-white tracking-tight block">{visitorStats.active24h}</span>
                        <span className="text-xs text-neutral-500 font-mono">LAST 24H</span>
                    </div>
                    <div>
                        <span className="text-lg font-bold text-neutral-300 block">{visitorStats.active7d}</span>
                        <span className="text-xs text-neutral-500 font-mono">LAST 7D</span>
                    </div>
                </div>
            </div>

            <div className="absolute top-6 right-6 z-10 text-right pointer-events-none">
                <div>
                    <span className="text-xl font-bold text-neutral-300 block">{visitorStats.total}</span>
                    <span className="text-xs text-neutral-500 font-mono">ALL TIME</span>
                </div>
            </div>

            <div className="absolute inset-0 flex items-center justify-center opacity-80 mt-10">
                <canvas
                    ref={canvasRef}
                    style={{ width: 600, height: 600, maxWidth: '100%', aspectRatio: 1 }}
                />
            </div>
        </div>
    );
}