/**
 * Pricing Table Component
 * Display subscription plans in a table format
 */

import { useState } from 'react';
import { CheckIcon } from '../../../icons';
import Button from '../button/Button';

export interface PricingPlan {
  id: number;
  name: string;
  monthlyPrice: number;
  price: number;
  originalPrice?: number;
  period: string;
  description: string;
  features: string[];
  buttonText: string;
  highlighted?: boolean;
  disabled?: boolean;
  annualDiscountPercent?: number;
  // Plan limits
  max_sites?: number;
  max_users?: number;
  max_keywords?: number;
  max_ahrefs_queries?: number;
  included_credits?: number;
}

interface PricingTableProps {
  variant?: '1' | '2';
  title?: string;
  plans: PricingPlan[];
  showToggle?: boolean;
  onPlanSelect?: (plan: PricingPlan) => void;
}

export function PricingTable({ variant = '1', title, plans, showToggle = false, onPlanSelect }: PricingTableProps) {
  const [billingPeriod, setBillingPeriod] = useState<'monthly' | 'annual'>('monthly');

  const getPrice = (plan: PricingPlan) => {
    if (billingPeriod === 'annual') {
      const discount = plan.annualDiscountPercent || 20;
      return (plan.monthlyPrice * 12 * (100 - discount) / 100).toFixed(0);
    }
    return plan.monthlyPrice.toFixed(0);
  };

  const getPeriod = () => {
    return billingPeriod === 'annual' ? '/year' : '/month';
  };

  return (
    <div className="w-full">
      {title && (
        <div className="text-center mb-8">
          <h2 className="text-3xl font-bold text-gray-900 dark:text-white">{title}</h2>
        </div>
      )}

      {showToggle && (
        <div className="flex justify-center mb-8">
          <div className="inline-flex items-center gap-3">
            <div className="inline-flex items-center gap-3 p-1 bg-gray-100 dark:bg-gray-800 rounded-lg">
              <Button
                variant={billingPeriod === 'monthly' ? 'secondary' : 'ghost'}
                size="sm"
                onClick={() => setBillingPeriod('monthly')}
              >
                Monthly
              </Button>
              <Button
                variant={billingPeriod === 'annual' ? 'secondary' : 'ghost'}
                size="sm"
                onClick={() => setBillingPeriod('annual')}
              >
                Annually
              </Button>
            </div>
            {billingPeriod === 'annual' && (
              <span className="badge-success">
                Save {Math.round(plans[0]?.annualDiscountPercent || 20)}%
              </span>
            )}
          </div>
        </div>
      )}

      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-6">
        {plans.map((plan) => (
          <div
            key={plan.id}
            className={`relative rounded-lg border ${
              plan.highlighted
                ? 'pricing-card-featured border-gray-700 shadow-lg ring-2 ring-gray-700'
                : 'border-gray-200 dark:border-gray-700'
            } ${plan.highlighted ? '' : 'bg-white dark:bg-gray-800'} p-6 flex flex-col`}
          >
            {plan.highlighted && (
              <div className="absolute -top-4 left-1/2 transform -translate-x-1/2">
                <span className="badge-primary px-3 py-1 inline-block">
                  Popular
                </span>
              </div>
            )}

            <div className="mb-4">
              <h3 className="text-xl font-bold text-gray-900 dark:text-white">{plan.name}</h3>
              <p className="text-sm text-gray-600 dark:text-gray-400 mt-1">{plan.description}</p>
            </div>

            <div className="mb-6">
              <div className="flex items-baseline gap-2">
                <span className={`text-4xl font-bold ${plan.highlighted ? 'text-white' : 'text-gray-900 dark:text-white'} price-text`}>
                  ${getPrice(plan)}
                </span>
                <span className={plan.highlighted ? 'text-gray-300' : 'text-gray-600 dark:text-gray-400'}>{getPeriod()}</span>
                {plan.originalPrice && billingPeriod === 'monthly' && (
                  <span className="text-lg line-through text-gray-400">
                    ${plan.originalPrice.toFixed(2)}
                  </span>
                )}
              </div>
              {billingPeriod === 'annual' && plan.monthlyPrice > 0 && (
                <p className="text-sm text-gray-500 mt-1">
                  Billed ${(plan.monthlyPrice * 12 * (100 - (plan.annualDiscountPercent || 20)) / 100).toFixed(0)}/year
                </p>
              )}
            </div>

            <ul className="space-y-3 mb-6 flex-grow">
              {plan.features.map((feature, index) => (
                <li key={index} className="flex items-start gap-2">
                  <CheckIcon className="w-5 h-5 text-success-500 flex-shrink-0 mt-0.5" />
                  <span className="text-sm text-gray-700 dark:text-gray-300">{feature}</span>
                </li>
              ))}
              
              {/* Plan Limits Section */}
              {(plan.max_sites || plan.max_keywords || plan.included_credits) && (
                <div className="pt-3 mt-3 border-t border-gray-200 dark:border-gray-700">
                  <div className="text-xs font-semibold text-gray-500 dark:text-gray-400 mb-2">LIMITS</div>
                  {plan.max_sites && (
                    <li className="flex items-start gap-2">
                      <CheckIcon className="w-4 h-4 text-brand-500 flex-shrink-0 mt-0.5" />
                      <span className="text-xs text-gray-600 dark:text-gray-400">
                        {plan.max_sites === 99999 ? 'Unlimited' : plan.max_sites} Sites
                      </span>
                    </li>
                  )}
                  {plan.max_users && (
                    <li className="flex items-start gap-2">
                      <CheckIcon className="w-4 h-4 text-brand-500 flex-shrink-0 mt-0.5" />
                      <span className="text-xs text-gray-600 dark:text-gray-400">
                        {plan.max_users === 99999 ? 'Unlimited' : plan.max_users} Team Members
                      </span>
                    </li>
                  )}
                  {plan.max_keywords && (
                    <li className="flex items-start gap-2">
                      <CheckIcon className="w-4 h-4 text-brand-500 flex-shrink-0 mt-0.5" />
                      <span className="text-xs text-gray-600 dark:text-gray-400">
                        {plan.max_keywords.toLocaleString()} Keywords
                      </span>
                    </li>
                  )}
                  {plan.included_credits && (
                    <li className="flex items-start gap-2">
                      <CheckIcon className="w-4 h-4 text-brand-500 flex-shrink-0 mt-0.5" />
                      <span className="text-xs text-gray-600 dark:text-gray-400">
                        {plan.included_credits.toLocaleString()} Credits/month
                      </span>
                    </li>
                  )}
                </div>
              )}
            </ul>

            <Button
              variant={plan.highlighted ? 'primary' : 'outline'}
              fullWidth
              onClick={() => onPlanSelect?.(plan)}
              disabled={plan.disabled}
            >
              {plan.buttonText}
            </Button>
          </div>
        ))}
      </div>
    </div>
  );
}