import { Link } from 'react-router-dom';
import { CheckCircle, Circle, Lock, Award, Clock } from 'lucide-react';
import { Exercise } from '../../api/types';
import { cn } from '../../utils/helpers';
import { DIFFICULTY_LABELS } from '../../utils/constants';
import { DIFFICULTY_COLORS } from '../../utils/colors';

interface ExerciseCardProps {
  exercise: Exercise;
  isCompleted?: boolean;
  isLocked?: boolean;
  className?: string;
}

export function ExerciseCard({
  exercise,
  isCompleted = false,
  isLocked = false,
  className,
}: ExerciseCardProps) {
  const difficultyColor = DIFFICULTY_COLORS[exercise.difficulty as keyof typeof DIFFICULTY_COLORS];

  return (
    <div
      className={cn(
        'group rounded-xl border border-border bg-card p-6 transition-all',
        isLocked && 'opacity-60',
        isCompleted && 'border-green-500/50 bg-green-500/5',
        !isLocked && 'hover:border-primary/50 hover:shadow-lg',
        className
      )}
    >
      {/* Header */}
      <div className="mb-4 flex items-start justify-between">
        <div className="flex items-center gap-3">
          <div
            className={cn(
              'flex h-10 w-10 items-center justify-center rounded-lg',
              isCompleted
                ? 'bg-green-500/20 text-green-400'
                : isLocked
                ? 'bg-muted text-muted-foreground'
                : 'bg-primary/20 text-primary'
            )}
          >
            {isCompleted ? (
              <CheckCircle className="h-6 w-6" />
            ) : isLocked ? (
              <Lock className="h-6 w-6" />
            ) : (
              <Circle className="h-6 w-6" />
            )}
          </div>
          <div>
            <h3 className={cn('font-semibold', isLocked && 'text-muted-foreground')}>
              {exercise.title}
            </h3>
            <p className="text-sm text-muted-foreground">
              Упражнение #{exercise.order}
            </p>
          </div>
        </div>
        {exercise.points > 0 && (
          <div className="flex items-center gap-1 text-sm font-medium text-yellow-400">
            <Award className="h-4 w-4" />
            <span>{exercise.points}</span>
          </div>
        )}
      </div>

      {/* Description */}
      <p className="mb-4 line-clamp-2 text-sm text-muted-foreground">
        {exercise.description}
      </p>

      {/* Meta */}
      <div className="flex flex-wrap items-center gap-4 text-sm text-muted-foreground">
        <div className="flex items-center gap-1">
          <Clock className="h-4 w-4" />
          <span>~{exercise.estimatedMinutes} мин</span>
        </div>
        <span
          className="rounded px-2 py-0.5 text-xs font-medium"
          style={{ backgroundColor: `${difficultyColor}20`, color: difficultyColor }}
        >
          {DIFFICULTY_LABELS[exercise.difficulty]}
        </span>
        <span className="rounded bg-muted px-2 py-0.5 text-xs capitalize">
          {exercise.type}
        </span>
      </div>

      {/* Action */}
      {!isLocked && (
        <Link
          to={`/training/${exercise.trackId}/exercises/${exercise.id}`}
          className={cn(
            'mt-4 flex items-center justify-center gap-2 rounded-lg px-4 py-2 text-sm font-medium transition-colors',
            isCompleted
              ? 'bg-green-500/20 text-green-400 hover:bg-green-500/30'
              : 'bg-primary text-primary-foreground hover:bg-primary/90'
          )}
        >
          {isCompleted ? 'Повторить' : 'Начать'}
        </Link>
      )}
    </div>
  );
}

export default ExerciseCard;