'use client';

import { useState, useEffect, useMemo } from 'react';
import { useRouter } from 'next/navigation';
import { Check, ArrowLeft } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import { fetchSubscriptionPlans, SubscriptionPlan } from '@/lib/stripe';

export default function PricingPage() {

  return (
    <div className="w-full h-full overflow-y-auto bg-black text-white pb-[10rem]">
      {/* Main Content */}
      <HomeModule5 />
    </div>
  );
}
/**价格方案 */
function HomeModule5() {
  const [billingType, setBillingType] = useState<'month' | 'year'>(
    "month"
  );

  const [plans, setPlans] = useState<SubscriptionPlan[]>([]);

  // 从后端获取订阅计划数据
  useEffect(() => {
    const loadPlans = async () => {
      try {
        const plansData = await fetchSubscriptionPlans();
        setPlans(plansData);
      } catch (err) {
        console.error('加载订阅计划失败:', err);
      }
    };

    loadPlans();
  }, []);

  const pricingPlans = useMemo<{
    title: string;
    price: number;
    credits: string;
    buttonText: string;
    features: string[];
  }[]>(() => {
    return plans.map((plan) => {
      return {
        title: plan.display_name || plan.name,
        price: billingType === "month" ? plan.price_month/100 : plan.price_year/100,
        credits: plan.description,
        buttonText: plan.is_free ? "Try For Free" : "Subscribe Now",
        features: plan.features || [],
      };
    });
  }, [plans, billingType]);

  const handleSubscribe = async (planName: string) => {
    if (planName === 'hobby') {
      return;
    }

    try {
      // 使用新的Checkout Session方案（更简单！）
      const { createCheckoutSession, redirectToCheckout } = await import('@/lib/stripe');

      // 从localStorage获取当前用户信息
      const User = JSON.parse(localStorage.getItem("currentUser") || "{}");

      if (!User.id) {
        throw new Error("无法获取用户ID，请重新登录");
      }

      // 1. 创建Checkout Session
      const result = await createCheckoutSession({
        user_id: String(User.id),
        plan_name: planName,
        billing_cycle: billingType
      });

      if (!result.successful || !result.data) {
        throw new Error("create checkout session failed");
      }

      // 2. 直接跳转到Stripe托管页面（就这么简单！）
      redirectToCheckout(result.data.checkout_url);

    } catch (error) {
      throw new Error("create checkout session failed, please try again later");
    }
  };
  return (
    <div
      data-alt="core-value-section"
      className="home-module5 h-[1600px] relative flex flex-col items-center justify-center w-full  bg-black snap-start"
    >
      <div
        data-alt="core-value-content"
        className="center z-10 flex flex-col items-center  mb-[8rem]"
      >
        <h2 className="text-white text-[3.375rem] leading-[100%] font-normal mb-[1.5rem]">
          Start Creating
        </h2>

        {/* 计费切换 */}
        <div className="h-[3.375rem] flex bg-black rounded-full p-[0.0625rem] mt-[1.5rem] border border-white/20">
          <button
            onClick={() => setBillingType("month")}
            className={`box-border flex justify-center items-center w-[6rem]  text-base rounded-full transition-all duration-300 ${
              billingType === "month"
                ? "bg-white text-black"
                : "text-white hover:text-gray-300"
            }`}
          >
            Monthly
          </button>
          <button
            onClick={() => setBillingType("year")}
            className={`box-border flex justify-center items-center w-[7.125rem]  text-base rounded-full transition-all duration-300 ${
              billingType === "year"
                ? "bg-white text-black"
                : "text-white hover:text-gray-300"
            }`}
          >
            Yearly - <span className="text-[#FFCC6D]">10%</span>
          </button>
        </div>
      </div>

      {/* 主要价格卡片 */}
      <div className="flex justify-between w-[90%] px-[12rem] mb-[2rem]">
        {pricingPlans.map((plan, index) => (
          <div
            key={index}
            className=" w-[26rem] h-[38.125rem] bg-black rounded-lg p-[1.5rem] border border-white/20"
          >
            <h3 className="text-white text-2xl font-normal mb-[1rem]">
              {plan.title}
            </h3>
            <div className="mb-[1rem]">
              <span className="text-white text-[3.375rem] font-bold">
                ${plan.price}
              </span>
              <span className="text-white text-xs ml-[0.5rem]">/month</span>
            </div>
            <p className="text-white text-[0.875rem] mb-[1rem]">
              {plan.credits}
            </p>
            <button onClick={() => handleSubscribe(plan.title)} className="w-full bg-white text-black py-[0.75rem] rounded-full mb-[1rem] hover:bg-black hover:text-white transition-colors border border-white/20">
              {plan.buttonText}
            </button>
            <p className="w-full text-center text-white/60 text-[0.75rem] mb-[2rem]">
              * Billed monthly until cancelled
            </p>
            <ul className="space-y-[1rem]">
              {plan.features.map((feature, featureIndex) => (
                <li
                  key={featureIndex}
                  className="flex items-center text-white text-[0.875rem]"
                >
                  <span className="text-[#C73BFF] mr-[0.5rem]">✓</span>
                  {feature}
                </li>
              ))}
            </ul>
          </div>
        ))}
      </div>

      {/* 额外价格卡片 */}
      <div className="flex gap-[1.5rem] w-[90%] px-[12rem]">
        <div className="flex-1 bg-black rounded-lg p-[1.5rem] border border-white/20">
          <h3 className="text-white text-[1.5rem] font-bold mb-[0.5rem]">
            Free
          </h3>
          <div className="mb-[1rem]">
            <span className="text-white text-[2.5rem] font-bold">$0</span>
          </div>
          <p className="text-white text-[0.875rem] mb-[1.5rem] leading-relaxed">
            10 Video mins and 1 AI credit per week, 1 Express avatar, 4 Exports
            per week with invideo watermark.
          </p>
          <p className="text-white text-[0.875rem] mb-[1.5rem] leading-relaxed">
            No access to generative features.
          </p>
          <button className="w-[9rem] bg-[#262626] text-white py-[0.75rem] rounded-full hover:bg-white hover:text-black transition-colors border border-white/20">
            Try For Free
          </button>
        </div>

        <div className="flex-1 bg-black rounded-lg p-[1.5rem] border border-white/20">
          <h3 className="text-white text-[1.5rem] font-bold mb-[0.5rem]">
            Enterprise
          </h3>
          <p className="text-white text-[2.5rem] mb-[1rem]">Custom</p>
          <p className="text-white text-[0.875rem] mb-[1.5rem] leading-relaxed">
            Custom solutions for large organizations. Advanced security and
            flexible pricing based on your needs.
          </p>
          <p className="text-white text-[0.875rem] mb-[1.5rem] leading-relaxed">
            on your needs.
          </p>
          <button className="w-[9rem] bg-[#262626] text-white py-[0.75rem] rounded-full hover:bg-white hover:text-black transition-colors border border-white/20">
            Contact Us
          </button>
        </div>
      </div>
    </div>
  );
}