"use client";

import React, { useMemo, useState } from 'react';
import { ComposableMap, Geographies, Geography, Line, Marker, ZoomableGroup } from "react-simple-maps";
import { useTheme } from "next-themes";
import { useGlobeData, GlobeDataInput } from './useGlobeData';

const geoUrl = "/ne_110m_admin_0_countries.geojson";

interface GlobeMapProps {
  data: GlobeDataInput[];
}

export const GlobeMap = ({ data }: GlobeMapProps) => {
  const { theme } = useTheme();
  const isLight = theme === 'light';
  
  const [position, setPosition] = useState({ coordinates: [0, 20], zoom: 1 });
  function handleMoveEnd(newPosition: any) {
    setPosition(newPosition);
  }

  const { arcsData, pointsData, labelsData } = useGlobeData(data, isLight);

  const mapBgColor = "transparent";
  const mapBorderColor = isLight ? "#ffffff" : "#0ea5e9";
  const mapFillColor = isLight ? "#4ade80" : "#0f172a";
  const mapHoverFill = isLight ? "#22c55e" : "#1e293b";

  return (
    <div className="relative w-full h-[500px] rounded-xl overflow-hidden bg-transparent flex items-center justify-center cursor-grab active:cursor-grabbing">
      <style>{`
        @keyframes flowDashGlobe {
          to {
            stroke-dashoffset: -100;
          }
        }
        .globe-animated-line {
          animation: flowDashGlobe 1.5s linear infinite;
        }
      `}</style>
      <ComposableMap
        projection="geoMercator"
        projectionConfig={{
          scale: 120,
          center: [0, 20]
        }}
        width={800}
        height={500}
        style={{ width: "100%", height: "100%", outline: "none" }}
      >
        <ZoomableGroup 
          zoom={position.zoom} 
          center={position.coordinates as [number, number]} 
          onMoveEnd={handleMoveEnd} 
          minZoom={1} 
          maxZoom={8}
        >
          <Geographies geography={geoUrl}>
          {({ geographies }) =>
            geographies.map((geo) => (
              <Geography
                key={geo.rsmKey}
                geography={geo}
                fill={mapFillColor}
                stroke={mapBorderColor}
                strokeWidth={0.5}
                style={{
                  default: { outline: "none" },
                  hover: { fill: mapHoverFill, outline: "none" },
                  pressed: { outline: "none" },
                }}
              />
            ))
          }
        </Geographies>

          {arcsData.map((arc: any, i: number) => {
            const isLocal = arc.startLng === arc.endLng && arc.startLat === arc.endLat;
            const color = Array.isArray(arc.color) ? arc.color[0] : arc.color || '#0ea5e9';
            
            if (isLocal) {
              return (
                <Marker key={`arc-${i}`} coordinates={[arc.startLng, arc.startLat]}>
                  <circle r={8} fill="none" stroke={color} strokeWidth={1.5} opacity={0.6} strokeDasharray="2,2" />
                </Marker>
              );
            }

            // Force the line to go straight across the map (the "front")
            // by interpolating multiple points. This prevents d3-geo from
            // wrapping around the dateline for long distances.
            const coordinates: [number, number][] = [];
            const steps = 30;
            for (let j = 0; j <= steps; j++) {
              const t = j / steps;
              let lng = arc.startLng + (arc.endLng - arc.startLng) * t;
              
              // Dynamic arc height based on distance
              const dist = Math.sqrt(
                Math.pow(arc.endLng - arc.startLng, 2) + 
                Math.pow(arc.endLat - arc.startLat, 2)
              );
              const height = Math.min(dist * 0.15, 25);
              let lat = arc.startLat + (arc.endLat - arc.startLat) * t + Math.sin(t * Math.PI) * height;
              
              coordinates.push([lng, lat]);
            }

            return (
              <Line
                key={`arc-${i}`}
                coordinates={coordinates}
                stroke={color}
                strokeWidth={1.5}
                strokeLinecap="round"
                strokeOpacity={0.9}
                strokeDasharray="2 4 4 4 8 78"
                className="globe-animated-line"
                style={{ pointerEvents: 'none' }}
              />
            );
          })}

        {pointsData.map((pt: any, i: number) => (
          <Marker key={`marker-${i}`} coordinates={[pt.lng, pt.lat]}>
            <circle r={pt.size * 2} fill={pt.color} opacity={0.8} />
          </Marker>
        ))}

        {labelsData.map((lbl: any, i: number) => (
          <Marker key={`label-${i}`} coordinates={[lbl.lng, lbl.lat]}>
            <text
              textAnchor="middle"
              y={-10}
              style={{
                fontFamily: "system-ui",
                fill: lbl.color,
                fontSize: `${lbl.size * 6}px`,
                fontWeight: "bold",
                pointerEvents: "none"
              }}
            >
              {lbl.name}
            </text>
          </Marker>
        ))}
        </ZoomableGroup>
      </ComposableMap>
    </div>
  );
};