"use client";

import { useState } from "react";
import { useTranslations } from "next-intl";
import { motion } from "framer-motion";
import { X, Sparkles, ArrowRight, Check, Loader2 } from "lucide-react";
import { useAnalytics } from "@/lib/analytics";

interface EmailCapturePopupProps {
  isOpen: boolean;
  onClose: () => void;
  onSubscribe?: () => void;
  trigger: "scroll" | "exit";
  locale: string;
  country: string;
  countryCode: string;
}

function getUtmParams() {
  if (typeof window === "undefined") return {};
  const params = new URLSearchParams(window.location.search);
  return {
    utmSource: params.get("utm_source") || "",
    utmMedium: params.get("utm_medium") || "",
    utmCampaign: params.get("utm_campaign") || "",
    utmContent: params.get("utm_content") || "",
    fbclid: params.get("fbclid") || "",
  };
}

function getDeviceInfo() {
  if (typeof window === "undefined") return { deviceName: "", deviceOS: "", userAgent: "" };
  const userAgent = navigator.userAgent;
  let deviceName = "Unknown";
  let deviceOS = "Unknown";

  if (userAgent.match(/Windows/i)) deviceOS = "Windows";
  else if (userAgent.match(/Mac/i)) deviceOS = "MacOS";
  else if (userAgent.match(/Linux/i)) deviceOS = "Linux";
  else if (userAgent.match(/Android/i)) deviceOS = "Android";
  else if (userAgent.match(/iPhone|iPad|iPod/i)) deviceOS = "iOS";

  if (userAgent.match(/Mobile/i)) deviceName = "Mobile";
  else if (userAgent.match(/Tablet/i)) deviceName = "Tablet";
  else deviceName = "Desktop";

  return { deviceName, deviceOS, userAgent };
}

export default function EmailCapturePopup({
  isOpen,
  onClose,
  onSubscribe,
  trigger,
  locale,
  country,
  countryCode,
}: EmailCapturePopupProps) {
  const t = useTranslations("Popup");
  const { trackPopupSubmit, trackPopupCtaClick } = useAnalytics();
  const [firstName, setFirstName] = useState("");
  const [email, setEmail] = useState("");
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [status, setStatus] = useState<"idle" | "success" | "alreadySubscribed" | "error">("idle");
  const [pageLoadTime] = useState(() => Date.now());

  const handleCTAClick = () => {
    trackPopupCtaClick({ locale });
  };

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    
    if (!email || !email.includes("@")) return;

    setIsSubmitting(true);
    trackPopupSubmit({ trigger, locale, country: countryCode });

    const timeOnPage = Math.floor((Date.now() - pageLoadTime) / 1000);
    const utmParams = getUtmParams();
    const deviceInfo = getDeviceInfo();

    try {
      const response = await fetch("/api/email-capture", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          firstName: firstName.trim(),
          email,
          locale,
          country,
          countryCode,
          source: "popup",
          trigger,
          timeOnPage,
          referrer: document.referrer || "",
          pageUrl: window.location.href,
          pageLanguage: navigator.language || "",
          preferredLocale: locale,
          ...deviceInfo,
          ...utmParams,
        }),
      });

      if (response.ok) {
        const data = await response.json();
        if (data.alreadySubscribed) {
          setStatus("alreadySubscribed");
        } else {
          setStatus("success");
        }
        onSubscribe?.();
      } else {
        setStatus("error");
      }
    } catch (error) {
      setStatus("error");
    } finally {
      setIsSubmitting(false);
    }
  };

  if (!isOpen) return null;

  return (
    <div className="fixed inset-0 z-50 flex items-center justify-center p-4">
      <motion.div
        className="absolute inset-0 bg-black/60 backdrop-blur-sm"
        initial={{ opacity: 0 }}
        animate={{ opacity: 1 }}
        exit={{ opacity: 0 }}
        onClick={onClose}
      />

      <motion.div
        className="relative w-full max-w-lg bg-white rounded-2xl shadow-2xl overflow-hidden"
        initial={{ opacity: 0, scale: 0.95, y: 20 }}
        animate={{ opacity: 1, scale: 1, y: 0 }}
        exit={{ opacity: 0, scale: 0.95, y: 20 }}
        transition={{ type: "spring", damping: 25, stiffness: 300 }}
      >
        <button
          onClick={onClose}
          className="absolute top-4 right-4 z-10 w-10 h-10 flex items-center justify-center rounded-full bg-white/80 hover:bg-white transition-colors shadow-sm"
          aria-label="Close"
        >
          <X className="w-5 h-5 text-gray-500" />
        </button>

        <div className="flex flex-col">
          <div className="p-8 pt-10">
            {status === "idle" && (
              <motion.div
                initial={{ opacity: 0, y: 10 }}
                animate={{ opacity: 1, y: 0 }}
                transition={{ delay: 0.1 }}
              >
                <div className="text-center mb-6">
                  <span className="inline-block px-3 py-1 text-xs font-semibold tracking-wider text-[#c9a962] bg-[#c9a962]/10 rounded-full mb-4">
                    {t("badge")}
                  </span>
                  <h2 className="text-2xl font-bold text-gray-900 mb-2 leading-tight">
                    {t("title")}
                  </h2>
                  <p className="text-gray-600 text-sm leading-relaxed">
                    {t("subtitle")}
                  </p>
                </div>

                <div className="space-y-4 mb-6">
                  {t.raw("bullets").map((bullet: string, index: number) => (
                    <motion.div
                      key={index}
                      initial={{ opacity: 0, x: -10 }}
                      animate={{ opacity: 1, x: 0 }}
                      transition={{ delay: 0.2 + index * 0.1 }}
                      className="flex items-start gap-3"
                    >
                      <div className="flex-shrink-0 w-5 h-5 rounded-full bg-[#c9a962]/20 flex items-center justify-center mt-0.5">
                        <Check className="w-3 h-3 text-[#c9a962]" />
                      </div>
                      <p className="text-sm text-gray-700">{bullet}</p>
                    </motion.div>
                  ))}
                </div>

                <form onSubmit={handleSubmit} className="space-y-3">
                  <div className="relative">
                    <input
                      type="text"
                      value={firstName}
                      onChange={(e) => setFirstName(e.target.value)}
                      placeholder={t("firstNamePlaceholder")}
                      className="w-full px-4 py-4 bg-gray-50 border border-gray-200 rounded-xl focus:outline-none focus:ring-2 focus:ring-[#c9a962]/50 focus:border-[#c9a962] transition-all text-gray-900 placeholder:text-gray-400"
                    />
                  </div>
                  <div className="relative">
                    <input
                      type="email"
                      value={email}
                      onChange={(e) => setEmail(e.target.value)}
                      placeholder={t("emailPlaceholder")}
                      className="w-full px-4 py-4 bg-gray-50 border border-gray-200 rounded-xl focus:outline-none focus:ring-2 focus:ring-[#c9a962]/50 focus:border-[#c9a962] transition-all text-gray-900 placeholder:text-gray-400"
                      required
                    />
                  </div>
                  <button
                    type="submit"
                    onClick={handleCTAClick}
                    disabled={isSubmitting}
                    className="w-full py-4 bg-gradient-to-r from-[#c9a962] to-[#e8c547] text-white font-semibold rounded-xl hover:shadow-lg hover:shadow-[#c9a962]/25 transition-all disabled:opacity-70 disabled:cursor-not-allowed flex items-center justify-center gap-2 group"
                  >
                    {isSubmitting ? (
                      <Loader2 className="w-5 h-5 animate-spin" />
                    ) : (
                      <>
                        {t("ctaButton")}
                        <ArrowRight className="w-4 h-4 group-hover:translate-x-1 transition-transform" />
                      </>
                    )}
                  </button>
                </form>

                <p className="text-center text-xs text-gray-400 mt-4">
                  {t("privacyNote")}
                </p>
              </motion.div>
            )}

            {status === "success" && (
              <motion.div
                initial={{ opacity: 0, scale: 0.9 }}
                animate={{ opacity: 1, scale: 1 }}
                className="text-center py-8"
              >
                <div className="w-16 h-16 mx-auto mb-4 bg-green-100 rounded-full flex items-center justify-center">
                  <Check className="w-8 h-8 text-green-600" />
                </div>
                <h3 className="text-xl font-bold text-gray-900 mb-2">
                  {t("successTitle")}
                </h3>
                <p className="text-gray-600">{t("successMessage")}</p>
              </motion.div>
            )}

            {status === "alreadySubscribed" && (
              <motion.div
                initial={{ opacity: 0, scale: 0.9 }}
                animate={{ opacity: 1, scale: 1 }}
                className="text-center py-8"
              >
                <div className="w-16 h-16 mx-auto mb-4 bg-[#c9a962]/20 rounded-full flex items-center justify-center">
                  <Sparkles className="w-8 h-8 text-[#c9a962]" />
                </div>
                <h3 className="text-xl font-bold text-gray-900 mb-2">
                  {t("alreadySubscribedTitle")}
                </h3>
                <p className="text-gray-600">{t("alreadySubscribed")}</p>
              </motion.div>
            )}

            {status === "error" && (
              <motion.div
                initial={{ opacity: 0, scale: 0.9 }}
                animate={{ opacity: 1, scale: 1 }}
                className="text-center py-8"
              >
                <div className="w-16 h-16 mx-auto mb-4 bg-red-100 rounded-full flex items-center justify-center">
                  <X className="w-8 h-8 text-red-600" />
                </div>
                <h3 className="text-xl font-bold text-gray-900 mb-2">
                  {t("errorTitle")}
                </h3>
                <p className="text-gray-600 mb-4">{t("errorMessage")}</p>
                <button
                  onClick={() => setStatus("idle")}
                  className="px-6 py-2 bg-gray-100 hover:bg-gray-200 rounded-lg transition-colors text-sm font-medium"
                >
                  {t("tryAgain")}
                </button>
              </motion.div>
            )}
          </div>
        </div>
      </motion.div>
    </div>
  );
}