import { useState } from 'react';
import { ChevronLeft, ChevronRight, Search, Globe, Rocket } from 'lucide-react';
import type { CelestialBody } from '../types';

interface ProbeListProps {
  probes: CelestialBody[];
  planets: CelestialBody[];
  onBodySelect: (body: CelestialBody | null) => void;
  selectedBody: CelestialBody | null;
}

export function ProbeList({ probes, planets, onBodySelect, selectedBody }: ProbeListProps) {
  const [isCollapsed, setIsCollapsed] = useState(false);
  const [searchTerm, setSearchTerm] = useState('');

  // Calculate distance for sorting
  const calculateDistance = (body: CelestialBody) => {
    const pos = body.positions[0];
    return Math.sqrt(pos.x ** 2 + pos.y ** 2 + pos.z ** 2);
  };

  const processBodies = (list: CelestialBody[]) => {
    return list
      .filter(b => 
        (b.name_zh || b.name).toLowerCase().includes(searchTerm.toLowerCase()) &&
        b.type !== 'star' // Exclude Sun from list
      )
      .map(body => ({
        body,
        distance: calculateDistance(body)
      }))
      .sort((a, b) => a.distance - b.distance);
  };

  const planetList = processBodies(planets);
  const probeList = processBodies(probes);

  return (
    <div 
      className={`
        absolute top-24 left-4 bottom-8 z-40 
        transition-all duration-300 ease-in-out flex
        ${isCollapsed ? 'w-12' : 'w-64'} // Adjusted width
      `}
    >
      {/* Main Content Panel */}
      <div className={`
        flex-1 bg-black/80 backdrop-blur-md border border-white/10 rounded-2xl overflow-hidden flex flex-col
        transition-opacity duration-300
        ${isCollapsed ? 'opacity-0 pointer-events-none' : 'opacity-100'}
      `}>
        {/* Header & Search */}
        <div className="p-4 border-b border-white/10 space-y-3">
          <div className="flex items-center justify-between text-white">
            <h2 className="font-bold text-base tracking-wide">天体导航</h2> {/* text-lg -> text-base */}
            <button 
              onClick={() => onBodySelect(null)}
              className="text-xs bg-white/10 hover:bg-white/20 px-2 py-1 rounded transition-colors text-gray-300"
            >
              重置视角
            </button>
          </div>
          
          <div className="relative">
            <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-gray-500" size={14} />
            <input 
              type="text" 
              placeholder="搜索天体..." 
              value={searchTerm}
              onChange={(e) => setSearchTerm(e.target.value)}
              className="w-full bg-white/5 border border-white/10 rounded-lg pl-9 pr-3 py-2 text-xs text-white placeholder-gray-500 focus:outline-none focus:border-blue-500/50 transition-colors"
            />
          </div>
        </div>

        {/* List Content */}
        <div className="flex-1 overflow-y-auto custom-scrollbar p-2 space-y-4">
          {/* Planets Group */}
          <div>
            <div className="px-2 mb-2 flex items-center gap-2 text-[10px] font-bold text-gray-400 uppercase tracking-wider"> {/* text-xs -> text-[10px] */}
              <Globe size={12} />
              行星 ({planetList.length})
            </div>
            <div className="space-y-1">
              {planetList.map(({ body, distance }) => (
                <BodyItem 
                  key={body.id} 
                  body={body} 
                  distance={distance} 
                  isSelected={selectedBody?.id === body.id}
                  onClick={() => onBodySelect(body)}
                />
              ))}
            </div>
          </div>

          {/* Probes Group */}
          <div>
            <div className="px-2 mb-2 flex items-center gap-2 text-[10px] font-bold text-gray-400 uppercase tracking-wider"> {/* text-xs -> text-[10px] */}
              <Rocket size={12} />
              探测器 ({probeList.length})
            </div>
            <div className="space-y-1">
              {probeList.map(({ body, distance }) => (
                <BodyItem 
                  key={body.id} 
                  body={body} 
                  distance={distance} 
                  isSelected={selectedBody?.id === body.id}
                  onClick={() => onBodySelect(body)}
                />
              ))}
            </div>
          </div>
        </div>
      </div>

      {/* Toggle Button (Attached to the side) */}
      <button
        onClick={() => setIsCollapsed(!isCollapsed)}
        className={`
          absolute top-0 ${isCollapsed ? 'left-0' : '-right-4'} 
          w-8 h-8 flex items-center justify-center
          bg-black/80 backdrop-blur-md border border-white/10 rounded-full
          text-white hover:bg-blue-600 transition-all shadow-lg z-50
          ${!isCollapsed && 'translate-x-1/2'}
        `}
        style={{ top: '20px' }}
      >
        {isCollapsed ? <ChevronRight size={16} /> : <ChevronLeft size={16} />}
      </button>
    </div>
  );
}

function BodyItem({ body, distance, isSelected, onClick }: { 
  body: CelestialBody, 
  distance: number, 
  isSelected: boolean, 
  onClick: () => void 
}) {
  const isInactive = body.is_active === false;

  return (
    <button
      onClick={isInactive ? undefined : onClick}
      disabled={isInactive}
      className={`
        w-full flex items-center justify-between p-2 rounded-lg text-left transition-all duration-200 group
        ${isSelected 
          ? 'bg-blue-600/20 border border-blue-500/50 shadow-[0_0_15px_rgba(37,99,235,0.2)]' 
          : isInactive 
            ? 'opacity-40 cursor-not-allowed' 
            : 'hover:bg-white/10 border border-transparent'
        }
      `}
    >
      <div>
        <div className={`text-xs font-medium ${isSelected ? 'text-blue-200' : 'text-gray-200 group-hover:text-white'}`}> {/* text-sm -> text-xs */}
          {body.name_zh || body.name}
        </div>
        <div className="text-[9px] text-gray-500 font-mono"> {/* text-[10px] -> text-[9px] */}
          {distance.toFixed(2)} AU
        </div>
      </div>
      
      {isSelected && (
        <div className="w-1.5 h-1.5 rounded-full bg-blue-400 shadow-[0_0_8px_rgba(96,165,250,0.8)] animate-pulse" />
      )}
    </button>
  );
}