"use client";

import { useState } from "react";
import { Link, useLocale } from "@/i18n/navigation";
import { useTranslation } from "@/i18n/navigation";
import {
  getPayEnv,
  getRecommendedChannel,
  mustUseWxPay,
  redirectToPay,
  getDeviceFromEnv,
} from "@/app/lib/payment";
import type { PayChannel, PayEnv } from "@/app/lib/payment";

const MEDIA_NAMES_ZH = ["36氪", "少数派", "极客公园", "虎嗅", "创业邦", "澎湃新闻"];
const MEDIA_NAMES_EN = ["36Kr", "sspai", "GeekPark", "Huxiu", "Cyzone", "The Paper"];

const avatarPhotos = [
  "https://i.pravatar.cc/150?img=32",
  "https://i.pravatar.cc/150?img=33",
  "https://i.pravatar.cc/150?img=25",
  "https://i.pravatar.cc/150?img=52",
  "https://i.pravatar.cc/150?img=44",
  "https://i.pravatar.cc/150?img=55",
  "https://i.pravatar.cc/150?img=47",
  "https://i.pravatar.cc/150?img=57",
  "https://i.pravatar.cc/150?img=48",
  "https://i.pravatar.cc/150?img=59",
  "https://i.pravatar.cc/150?img=49",
];

const features = [
  { icon: "🍹", key: "feature1" as const },
  { icon: "❤️", key: "feature2" as const },
  { icon: "🧪", key: "feature3" as const },
  { icon: "🌎", key: "feature4" as const },
  { icon: "💬", key: "feature5" as const },
];

export default function HeroSection() {
  const { t } = useTranslation("common");
  const { t: tHero } = useTranslation("hero");
  const locale = useLocale();
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const handleJoin = async (e: React.FormEvent) => {
    e.preventDefault();
    const em = email.trim();
    if (!em) {
      setError(locale === "zh" ? "请输入邮箱" : "Please enter your email");
      return;
    }
    setError(null);
    setLoading(true);
    try {
      const res = await fetch("/api/meetup/ensure-user", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ email: em, password: password || undefined }),
        credentials: "include",
      });
      const data = await res.json();
      if (!res.ok || !data?.ok) {
        throw new Error(data?.error || (locale === "zh" ? "操作失败" : "Operation failed"));
      }
      await fetch("/api/auth/sync-session", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ token: data.token, record: data.record }),
      });
      const returnUrl = typeof window !== "undefined" ? `${window.location.origin}/${locale}/join/paid` : "/zh/join/paid";
      const env: PayEnv = typeof window !== "undefined" ? (navigator.userAgent.includes("MicroMessenger") ? "wechat" : "pc") : "pc";
      const channel: PayChannel = mustUseWxPay(env) ? "wxpay" : getRecommendedChannel(env);
      redirectToPay({
        user_id: data.user_id,
        return_url: returnUrl,
        channel,
        device: getDeviceFromEnv(env),
        useJoinConfig: true,
      });
    } catch (err) {
      setError(err instanceof Error ? err.message : "操作失败");
    } finally {
      setLoading(false);
    }
  };

  return (
    <section className="relative overflow-hidden">
      <div className="absolute inset-0 bg-gradient-to-b from-orange-50/70 via-white to-[#fafafa] dark:from-gray-950 dark:via-gray-900 dark:to-gray-950" />
      <div
        className="absolute top-0 right-0 w-[500px] h-[500px] -translate-y-1/3 translate-x-1/4 opacity-40 rounded-full"
        style={{
          background:
            "radial-gradient(circle, rgba(249,115,22,0.25) 0%, transparent 70%)",
        }}
      />
      <div
        className="absolute bottom-0 left-0 w-[350px] h-[350px] translate-y-1/3 -translate-x-1/4 opacity-30 rounded-full"
        style={{
          background:
            "radial-gradient(circle, rgba(139,92,246,0.2) 0%, transparent 70%)",
        }}
      />

      <div className="relative max-w-[1400px] mx-auto px-5 sm:px-10 py-10 sm:py-14 md:py-20">
        <div className="flex flex-col lg:flex-row lg:items-start lg:gap-10 xl:gap-16">
          {/* Left Column */}
          <div className="flex-1 min-w-0">
            <span className="inline-flex items-center gap-1.5 text-xs font-semibold text-orange-700 dark:text-orange-400 bg-orange-100 dark:bg-orange-900/30 px-3 py-1.5 rounded-full mb-5">
              🏆 {tHero("badge")}
            </span>

            <h1 className="text-3xl sm:text-4xl md:text-5xl lg:text-6xl font-bold tracking-tight leading-tight mb-5">
              <span className="hero-gradient-text">{tHero("title")}</span>
              <br />
              <span className="text-gray-900 dark:text-gray-100">{tHero("titleSuffix")}</span>
            </h1>

            <p className="text-base sm:text-lg text-gray-500 dark:text-gray-400 max-w-2xl mb-7 leading-relaxed">
              {tHero("subtitle")}
            </p>

            <div className="space-y-2.5 mb-8">
              {features.map((f) => (
                <div key={f.key} className="flex items-start gap-2.5">
                  <span className="text-base sm:text-lg shrink-0 mt-0.5">
                    {f.icon}
                  </span>
                  <span className="text-sm sm:text-base text-gray-600 dark:text-gray-400 underline decoration-gray-300 dark:decoration-gray-600 underline-offset-2">
                    {tHero(f.key)}
                  </span>
                </div>
              ))}
            </div>

            <div className="flex items-center gap-3 mb-8">
              <div className="flex -space-x-2">
                {avatarPhotos.slice(0, 8).map((src, i) => (
                  <img
                    key={i}
                    src={src}
                    alt=""
                    className="w-8 h-8 sm:w-9 sm:h-9 rounded-full border-2 border-white dark:border-gray-800 shadow-sm object-cover"
                  />
                ))}
              </div>
              <span className="text-sm text-gray-500 dark:text-gray-400">
                {tHero("membersJoined")}
              </span>
            </div>

            <div className="pt-7 border-t border-gray-100 dark:border-gray-800">
              <p className="text-xs text-gray-400 dark:text-gray-500 uppercase tracking-wider mb-3">
                {tHero("mediaPress")}
              </p>
              <div className="flex flex-wrap items-center gap-x-6 sm:gap-x-8 gap-y-2">
                {(locale === "zh" ? MEDIA_NAMES_ZH : MEDIA_NAMES_EN).map(
                  (name) => (
                    <span
                      key={name}
                      className="text-sm font-semibold text-gray-300 dark:text-gray-600 hover:text-gray-400 dark:hover:text-gray-500 transition-colors cursor-default"
                    >
                      {name}
                    </span>
                  )
                )}
              </div>
            </div>
          </div>

          {/* Right Column: Video + Email */}
          <div className="lg:w-[360px] xl:w-[400px] shrink-0 mt-10 lg:mt-4">
            <div className="bg-white dark:bg-gray-900 rounded-2xl shadow-xl overflow-hidden border border-gray-100 dark:border-gray-800">
              <div className="relative h-48 sm:h-56 bg-gradient-to-br from-emerald-400 via-teal-500 to-cyan-600 flex items-center justify-center cursor-pointer group overflow-hidden">
                <div className="absolute inset-0 opacity-20">
                  <div className="absolute top-4 left-4 w-20 h-16 rounded-lg bg-white/20" />
                  <div className="absolute bottom-6 right-6 w-24 h-14 rounded-lg bg-white/15" />
                  <div className="absolute top-1/2 left-1/3 w-16 h-16 rounded-full bg-white/10" />
                </div>
                <div className="absolute bottom-0 left-0 right-0 h-1/3 bg-gradient-to-t from-black/20 to-transparent" />
                <button className="relative w-16 h-16 rounded-full bg-white/95 flex items-center justify-center shadow-lg group-hover:scale-110 transition-transform">
                  <svg
                    className="w-7 h-7 text-emerald-600 ml-1"
                    fill="currentColor"
                    viewBox="0 0 24 24"
                  >
                    <path d="M8 5v14l11-7z" />
                  </svg>
                </button>
              </div>

              <form onSubmit={handleJoin} className="p-4 sm:p-5">
                <input
                  type="email"
                  value={email}
                  onChange={(e) => { setEmail(e.target.value); setError(null); }}
                  placeholder={tHero("emailPlaceholder")}
                  className="w-full border border-gray-200 dark:border-gray-700 rounded-lg px-4 py-3 text-sm placeholder-gray-400 dark:placeholder-gray-500 bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-[#ff4d4f]/20 focus:border-[#ff4d4f] transition-colors mb-3"
                />
                <input
                  type="password"
                  value={password}
                  onChange={(e) => { setPassword(e.target.value); setError(null); }}
                  placeholder={locale === "zh" ? "密码（老用户必填）" : "Password (required for existing users)"}
                  className="w-full border border-gray-200 dark:border-gray-700 rounded-lg px-4 py-3 text-sm placeholder-gray-400 dark:placeholder-gray-500 bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-[#ff4d4f]/20 focus:border-[#ff4d4f] transition-colors mb-3"
                />
                {error && (
                  <p className="mb-2 text-sm text-red-600 dark:text-red-400">{error}</p>
                )}
                <button
                  type="submit"
                  disabled={loading}
                  className="w-full bg-[#ff4d4f] hover:bg-[#ff3333] dark:hover:bg-[#ff5c5e] text-white py-3 rounded-lg text-sm font-semibold transition-colors active:scale-[0.98] disabled:opacity-70"
                >
                  {loading ? (locale === "zh" ? "处理中…" : "Processing…") : tHero("ctaJoin")}
                </button>
                <p className="text-xs text-gray-400 dark:text-gray-500 text-center mt-3">
                  {locale === "zh" ? "新用户将自动注册，支付成功后需修改默认密码" : "New users auto-register; change default password after payment"}
                </p>
              </form>
            </div>

            <div className="mt-4 flex flex-wrap gap-2 justify-center">
              <Link href="/dashboard" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                📍 {tHero("quickLinks.nextStop")}
              </Link>
              <Link href="/meetups" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                🍹 {tHero("quickLinks.meetups")}
              </Link>
              <Link href="/dating" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                ❤️ {tHero("quickLinks.dating")}
              </Link>
              <Link href="/tools" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                📊 {tHero("quickLinks.tools")}
              </Link>
              <Link href="/ai" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                🤖 {tHero("quickLinks.ai")}
              </Link>
              <Link href="/gigs" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                💰 {tHero("quickLinks.gigs")}
              </Link>
              <Link href="/report" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                📊 {tHero("quickLinks.report")}
              </Link>
              <Link href="/join" className="text-xs text-gray-400 hover:text-gray-600 dark:hover:text-gray-300 bg-white dark:bg-gray-800 rounded-full px-3 py-1.5 border border-gray-100 dark:border-gray-700 transition-colors min-h-[2rem] inline-flex items-center">
                💬 {tHero("quickLinks.join")}
              </Link>
            </div>
          </div>
        </div>
      </div>
    </section>
  );
}