import { useRouter } from 'next/navigation';
import { Award, ChevronRight, Crown, Trophy, Users } from 'lucide-react';
import Button from '@/components/ui/Button';
import type { TeamSummaryViewModel } from '@/lib/view-models/TeamSummaryViewModel';

const SKILL_LEVELS: {
  id: string;
  label: string;
  icon: React.ElementType;
  color: string;
  bgColor: string;
  borderColor: string;
}[] = [
  {
    id: 'pro',
    label: 'Pro',
    icon: () => null,
    color: 'text-yellow-400',
    bgColor: 'bg-yellow-400/10',
    borderColor: 'border-yellow-400/30',
  },
  {
    id: 'advanced',
    label: 'Advanced',
    icon: () => null,
    color: 'text-purple-400',
    bgColor: 'bg-purple-400/10',
    borderColor: 'border-purple-400/30',
  },
  {
    id: 'intermediate',
    label: 'Intermediate',
    icon: () => null,
    color: 'text-primary-blue',
    bgColor: 'bg-primary-blue/10',
    borderColor: 'border-primary-blue/30',
  },
  {
    id: 'beginner',
    label: 'Beginner',
    icon: () => null,
    color: 'text-green-400',
    bgColor: 'bg-green-400/10',
    borderColor: 'border-green-400/30',
  },
];

interface TeamLeaderboardPreviewProps {
  topTeams: TeamSummaryViewModel[];
  onTeamClick: (id: string) => void;
}

export default function TeamLeaderboardPreview({
  topTeams,
  onTeamClick
}: TeamLeaderboardPreviewProps) {
  const router = useRouter();

  const getMedalColor = (position: number) => {
    switch (position) {
      case 0:
        return 'text-yellow-400';
      case 1:
        return 'text-gray-300';
      case 2:
        return 'text-amber-600';
      default:
        return 'text-gray-500';
    }
  };

  const getMedalBg = (position: number) => {
    switch (position) {
      case 0:
        return 'bg-yellow-400/10 border-yellow-400/30';
      case 1:
        return 'bg-gray-300/10 border-gray-300/30';
      case 2:
        return 'bg-amber-600/10 border-amber-600/30';
      default:
        return 'bg-iron-gray/50 border-charcoal-outline';
    }
  };

  if (topTeams.length === 0) return null;

  return (
    <div className="mb-12">
      {/* Header */}
      <div className="flex items-center justify-between mb-4">
        <div className="flex items-center gap-3">
          <div className="flex h-11 w-11 items-center justify-center rounded-xl bg-gradient-to-br from-yellow-400/20 to-amber-600/10 border border-yellow-400/30">
            <Award className="w-5 h-5 text-yellow-400" />
          </div>
          <div>
            <h2 className="text-xl font-bold text-white">Top Teams</h2>
            <p className="text-sm text-gray-500">Highest rated racing teams</p>
          </div>
        </div>

        <Button
          variant="secondary"
          onClick={() => router.push('/teams/leaderboard')}
          className="flex items-center gap-2 text-sm"
        >
          View Full Leaderboard
          <ChevronRight className="w-4 h-4" />
        </Button>
      </div>

      {/* Compact Leaderboard */}
      <div className="rounded-xl bg-iron-gray/30 border border-charcoal-outline overflow-hidden">
        <div className="divide-y divide-charcoal-outline/50">
          {topTeams.map((team, index) => {
            const levelConfig = SKILL_LEVELS.find((l) => l.id === team.performanceLevel);

            return (
              <button
                key={team.id}
                type="button"
                onClick={() => onTeamClick(team.id)}
                className="flex items-center gap-4 px-4 py-3 w-full text-left hover:bg-iron-gray/30 transition-colors group"
              >
                {/* Position */}
                <div
                  className={`flex h-8 w-8 items-center justify-center rounded-full text-xs font-bold border ${getMedalBg(index)} ${getMedalColor(index)}`}
                >
                  {index < 3 ? (
                    <Crown className="w-3.5 h-3.5" />
                  ) : (
                    index + 1
                  )}
                </div>

                {/* Team Info */}
                <div className={`flex h-9 w-9 items-center justify-center rounded-lg ${levelConfig?.bgColor} border ${levelConfig?.borderColor}`}>
                  {/* LevelIcon */}
                </div>
                <div className="flex-1 min-w-0">
                  <p className="text-white font-medium truncate group-hover:text-purple-400 transition-colors">
                    {team.name}
                  </p>
                  <div className="flex items-center gap-3 text-xs text-gray-500">
                    <span className="flex items-center gap-1">
                      <Users className="w-3 h-3" />
                      {team.memberCount}
                    </span>
                    <span className="flex items-center gap-1">
                      <Trophy className="w-3 h-3" />
                      {team.totalWins} wins
                    </span>
                    {team.isRecruiting && (
                      <span className="flex items-center gap-1 text-performance-green">
                        <div className="w-1.5 h-1.5 rounded-full bg-performance-green animate-pulse" />
                        Recruiting
                      </span>
                    )}
                  </div>
                </div>

                {/* Rating */}
                <div className="text-right">
                  <p className="text-purple-400 font-mono font-semibold">
                    {(team as any).rating?.toLocaleString() || '—'}
                  </p>
                  <p className="text-xs text-gray-500">Rating</p>
                </div>
              </button>
            );
          })}
        </div>
      </div>
    </div>
  );
}