/**
 * Lumina Design System - Reusable UI Components
 * Modern, premium design aesthetic with smooth animations and clean styling
 */

import React from 'react';
import { LucideIcon } from 'lucide-react';

// ============================================================================
// Button Components
// ============================================================================

interface LuminaButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: 'primary' | 'secondary' | 'ghost';
  size?: 'sm' | 'md' | 'lg';
  icon?: LucideIcon;
  iconPosition?: 'left' | 'right';
  loading?: boolean;
  children: React.ReactNode;
}

export const LuminaButton: React.FC<LuminaButtonProps> = ({
  variant = 'primary',
  size = 'md',
  icon: Icon,
  iconPosition = 'right',
  loading = false,
  children,
  className = '',
  disabled,
  ...props
}) => {
  const baseClasses = 'inline-flex items-center justify-center font-medium transition-all focus:outline-none focus:ring-2 focus:ring-offset-2';

  const variantClasses = {
    primary: 'bg-indigo-600 text-white hover:bg-indigo-700 focus:ring-indigo-500 shadow-sm',
    secondary: 'bg-white text-gray-900 border border-gray-300 hover:bg-gray-50 focus:ring-indigo-500',
    ghost: 'text-indigo-600 hover:bg-indigo-50 focus:ring-indigo-500',
  };

  const sizeClasses = {
    sm: 'px-3 py-1.5 text-sm rounded-lg',
    md: 'px-4 py-2.5 text-sm rounded-lg',
    lg: 'px-6 py-3 text-base rounded-lg',
  };

  const disabledClasses = 'disabled:opacity-70 disabled:cursor-not-allowed';

  return (
    <button
      className={`${baseClasses} ${variantClasses[variant]} ${sizeClasses[size]} ${disabledClasses} ${className}`}
      disabled={disabled || loading}
      {...props}
    >
      {loading ? (
        <span className="animate-pulse">Processing...</span>
      ) : (
        <>
          {Icon && iconPosition === 'left' && <Icon className="w-4 h-4 mr-2" />}
          {children}
          {Icon && iconPosition === 'right' && <Icon className="w-4 h-4 ml-2" />}
        </>
      )}
    </button>
  );
};

// ============================================================================
// Input Components
// ============================================================================

interface LuminaInputProps extends React.InputHTMLAttributes<HTMLInputElement> {
  label?: string;
  error?: string;
  hint?: string;
  icon?: LucideIcon;
}

export const LuminaInput: React.FC<LuminaInputProps> = ({
  label,
  error,
  hint,
  icon: Icon,
  className = '',
  ...props
}) => {
  return (
    <div className="w-full">
      {label && (
        <label className="block text-sm font-medium text-gray-700 mb-1">
          {label}
          {props.required && <span className="text-red-500 ml-1">*</span>}
        </label>
      )}
      <div className="relative">
        {Icon && (
          <div className="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
            <Icon className="h-5 w-5 text-gray-400" />
          </div>
        )}
        <input
          className={`block w-full ${Icon ? 'pl-10' : 'pl-3'} pr-3 py-2.5 border ${
            error ? 'border-red-300 focus:ring-red-500 focus:border-red-500' : 'border-gray-300 focus:ring-indigo-500 focus:border-indigo-500'
          } rounded-lg transition-colors ${className}`}
          {...props}
        />
      </div>
      {error && <p className="text-sm text-red-600 mt-1">{error}</p>}
      {hint && !error && <p className="text-sm text-gray-500 mt-1">{hint}</p>}
    </div>
  );
};

// ============================================================================
// Card Components
// ============================================================================

interface LuminaCardProps {
  children: React.ReactNode;
  className?: string;
  padding?: 'none' | 'sm' | 'md' | 'lg';
  hover?: boolean;
}

export const LuminaCard: React.FC<LuminaCardProps> = ({
  children,
  className = '',
  padding = 'md',
  hover = false,
}) => {
  const paddingClasses = {
    none: '',
    sm: 'p-4',
    md: 'p-6',
    lg: 'p-8',
  };

  const hoverClasses = hover ? 'hover:shadow-lg hover:-translate-y-0.5 transition-all' : '';

  return (
    <div className={`bg-white rounded-2xl shadow-sm border border-gray-100 ${paddingClasses[padding]} ${hoverClasses} ${className}`}>
      {children}
    </div>
  );
};

// ============================================================================
// Badge Components
// ============================================================================

interface LuminaBadgeProps {
  children: React.ReactNode;
  variant?: 'default' | 'success' | 'warning' | 'error' | 'info';
  size?: 'sm' | 'md';
}

export const LuminaBadge: React.FC<LuminaBadgeProps> = ({
  children,
  variant = 'default',
  size = 'md',
}) => {
  const variantClasses = {
    default: 'bg-gray-100 text-gray-800',
    success: 'bg-green-100 text-green-800',
    warning: 'bg-amber-100 text-amber-800',
    error: 'bg-red-100 text-red-800',
    info: 'bg-blue-100 text-blue-800',
  };

  const sizeClasses = {
    sm: 'text-xs px-2 py-0.5',
    md: 'text-sm px-2.5 py-1',
  };

  return (
    <span className={`inline-flex items-center font-medium rounded-full ${variantClasses[variant]} ${sizeClasses[size]}`}>
      {children}
    </span>
  );
};

// ============================================================================
// Section Container
// ============================================================================

interface LuminaSectionProps {
  children: React.ReactNode;
  title?: string;
  subtitle?: string;
  className?: string;
}

export const LuminaSection: React.FC<LuminaSectionProps> = ({
  children,
  title,
  subtitle,
  className = '',
}) => {
  return (
    <section className={`py-16 px-4 sm:px-6 lg:px-8 ${className}`}>
      <div className="max-w-7xl mx-auto">
        {(title || subtitle) && (
          <div className="text-center mb-12">
            {title && <h2 className="text-3xl font-bold text-gray-900 mb-3">{title}</h2>}
            {subtitle && <p className="text-lg text-gray-600 max-w-2xl mx-auto">{subtitle}</p>}
          </div>
        )}
        {children}
      </div>
    </section>
  );
};

// ============================================================================
// Icon Box Component
// ============================================================================

interface LuminaIconBoxProps {
  icon: LucideIcon;
  color?: 'indigo' | 'green' | 'amber' | 'red' | 'blue';
  size?: 'sm' | 'md' | 'lg';
}

export const LuminaIconBox: React.FC<LuminaIconBoxProps> = ({
  icon: Icon,
  color = 'indigo',
  size = 'md',
}) => {
  const colorClasses = {
    indigo: 'bg-indigo-100 text-indigo-600',
    green: 'bg-green-100 text-green-600',
    amber: 'bg-amber-100 text-amber-600',
    red: 'bg-red-100 text-red-600',
    blue: 'bg-blue-100 text-blue-600',
  };

  const sizeClasses = {
    sm: 'w-10 h-10',
    md: 'w-12 h-12',
    lg: 'w-16 h-16',
  };

  const iconSizeClasses = {
    sm: 'w-5 h-5',
    md: 'w-6 h-6',
    lg: 'w-8 h-8',
  };

  return (
    <div className={`${sizeClasses[size]} ${colorClasses[color]} rounded-xl flex items-center justify-center`}>
      <Icon className={iconSizeClasses[size]} />
    </div>
  );
};

// ============================================================================
// Feature Card Component
// ============================================================================

interface LuminaFeatureCardProps {
  icon: LucideIcon;
  title: string;
  description: string;
  onClick?: () => void;
}

export const LuminaFeatureCard: React.FC<LuminaFeatureCardProps> = ({
  icon,
  title,
  description,
  onClick,
}) => {
  return (
    <LuminaCard
      hover={!!onClick}
      className={onClick ? 'cursor-pointer' : ''}
      onClick={onClick}
    >
      <div className="flex flex-col items-center text-center">
        <LuminaIconBox icon={icon} size="lg" />
        <h3 className="mt-4 text-lg font-semibold text-gray-900">{title}</h3>
        <p className="mt-2 text-gray-600">{description}</p>
      </div>
    </LuminaCard>
  );
};

// ============================================================================
// Loading Spinner
// ============================================================================

interface LuminaSpinnerProps {
  size?: 'sm' | 'md' | 'lg';
  className?: string;
}

export const LuminaSpinner: React.FC<LuminaSpinnerProps> = ({
  size = 'md',
  className = '',
}) => {
  const sizeClasses = {
    sm: 'w-4 h-4',
    md: 'w-8 h-8',
    lg: 'w-12 h-12',
  };

  return (
    <div className={`animate-spin rounded-full border-2 border-gray-200 border-t-indigo-600 ${sizeClasses[size]} ${className}`} />
  );
};