"use client";

import Image from "next/image";
import { useRouter } from "next/navigation";
import { useCallback, useEffect, useState } from "react";
import Button from "@/components/Componentes/button";
import NetworkImage from "@/components/Componentes/network-image";
import PageHeader from "@/components/Componentes/page-header";
import SectionOverlayHost from "@/components/Componentes/section-overlay-host";
import SliderPage from "@/components/Componentes/slider-page";
import VideoPlayer from "@/components/Componentes/video-player";
import {
  IntroMatchesIcon,
  IntroMarriagesIcon,
  IntroPlayButtonIcon,
  IntroUsersIcon,
} from "@/components/Componentes/intro-hero-illustration";
import { useMarriageConfigQuery } from "@/hooks/marriage/use-marriage-config";
import { useMarriageProfileQuery } from "@/hooks/marriage/use-profile-main";
import { useHabibWebReady } from "@/hooks/use-habib-web-ready";
import { useHardwareBackHandler } from "@/hooks/use-hardware-back-handler";
import { authBridge } from "@/lib/auth-bridge";
import { SHOW_INTRO_VIDEOS } from "@/config/features";
import { getSubmitPath } from "@/lib/get-submit-path";
import { localizePath } from "@/translations/config";
import { useI18n } from "@/translations/provider";

import { PageBackground } from "@/components/Componentes/page-background";

export default function IntroClient() {
  const router = useRouter();
  const { dictionary: t, locale } = useI18n();
  const { data: profile, refetch } = useMarriageProfileQuery({
    enabled: false,
    retry: false,
  });
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [isPlayerOpen, setIsPlayerOpen] = useState(false);
  const [isStepsOpen, setIsStepsOpen] = useState(false);

  const { data: config } = useMarriageConfigQuery();

  // Signal Flutter that the Intro UI is ready. Config has a local fallback
  // image so we don't need to wait for it — announce immediately on mount.
  useHabibWebReady(true);

  useEffect(() => {
    const readStepsFromUrl = () => {
      if (typeof window === "undefined") return;
      const params = new URLSearchParams(window.location.search);
      setIsStepsOpen(params.get("steps") === "open");
    };

    readStepsFromUrl();
    window.addEventListener("popstate", readStepsFromUrl);
    return () => window.removeEventListener("popstate", readStepsFromUrl);
  }, []);

  const handleOpenSteps = useCallback(() => {
    setIsStepsOpen(true);
    if (typeof window !== "undefined") {
      const url = new URL(window.location.href);
      url.searchParams.set("steps", "open");
      window.history.replaceState({ steps: "open" }, "", url.toString());
    }
  }, []);

  const handleCloseSteps = useCallback(() => {
    setIsStepsOpen(false);
    if (typeof window !== "undefined") {
      const params = new URLSearchParams(window.location.search);
      if (params.get("steps") === "open") {
        const url = new URL(window.location.href);
        url.searchParams.delete("steps");
        window.history.replaceState({}, "", url.toString());
      }
    }
  }, []);

  useHardwareBackHandler(() => {
    if (isStepsOpen) {
      handleCloseSteps();
      return true; // handled: keep WebView open, just close the overlay
    }
    return false; // Root: tell Flutter to close WebView screen
  }, isStepsOpen);

  const handleSubmit = async () => {
    if (isSubmitting) {
      return;
    }

    setIsSubmitting(true);

    try {
      if (!authBridge.isAuthenticated()) {
        const token = await authBridge.ensureToken();
        if (!token) {
          console.warn("No token from bridge – login was not completed");
          return;
        }
      }

      let profileResponse = profile;
      try {
        const { data: freshProfile } = await refetch();
        profileResponse = freshProfile ?? profile;
      } catch (refetchError) {
        console.warn(
          "Could not refetch profile data – using fallback",
          refetchError,
        );
      }

      const submitPath = getSubmitPath(profileResponse);
      if (submitPath === "/intro" || submitPath === "/terms") {
        handleOpenSteps();
      } else {
        router.push(localizePath(submitPath, locale));
      }
    } catch (error) {
      console.error("Submission/redirect failed", error);
      handleOpenSteps();
    } finally {
      setIsSubmitting(false);
    }
  };

  return (
    <>
      <PageBackground />

      <PageHeader profile={profile} sticky />

      <main
        style={{
          minHeight: SHOW_INTRO_VIDEOS
            ? undefined
            : "calc(100dvh - 56px - max(12px, calc(var(--safe-top) + 6px)))",
        }}
        className={[
          "flex min-h-0 flex-1 flex-col text-center pb-[calc(90px+var(--safe-bottom))]",
          SHOW_INTRO_VIDEOS ? "pt-4" : "justify-center",
        ].join(" ")}
      >
        <div className="flex flex-col items-center">
          <Image
            src={"/assets/images/Group 1597880466.svg"}
            alt={t["heavenly marriage"]}
            width={168}
            height={155}
            priority
            loading="eager"
          />
          <h2 className="group-16 text-[#475569] font-bold mt-5 text-center">
            {t["A Path to Heavenly Marriage"]}
          </h2>
          <p className="text-center mt-2 group-12 text-[#4D4D4D]">
            {
              t[
                'We have come together with the goal of creating a secure and confidential path for "permanent marriage" among Muslims'
              ]
            }
          </p>
        </div>
        <div className="flex items-center justify-between gap-2 mt-8 w-full">
          <div className="flex min-w-0 flex-1 items-center gap-1 p-2 border border-[#FD6ABB]/10 rounded-2xl">
            <IntroUsersIcon className="shrink-0" />
            <div className="flex min-w-0 flex-1 flex-col items-start justify-center">
              <p className="w-full truncate text-start text-[#36363C] group-16 font-bold leading-tight" title="120">
                120
              </p>
              <p
                className="w-full truncate text-start text-[#36363C] group-10 font-semibold capitalize"
                title={t["user profiles"]}
              >
                {t["user profiles"]}
              </p>
            </div>
          </div>
          <div className="flex min-w-0 flex-1 items-center gap-1 p-2 border border-[#FD6ABB]/10 rounded-2xl">
            <IntroMatchesIcon className="shrink-0" />
            <div className="flex min-w-0 flex-1 flex-col items-start justify-center">
              <p className="w-full truncate text-start text-[#36363C] group-16 font-bold leading-tight" title="14">
                14
              </p>
              <p
                className="w-full truncate text-start text-[#36363C] group-10 font-semibold capitalize"
                title={t["matches"]}
              >
                {t["matches"]}
              </p>
            </div>
          </div>
          <div className="flex min-w-0 flex-1 items-center gap-1 p-2 border border-[#FD6ABB]/10 rounded-2xl">
            <IntroMarriagesIcon className="shrink-0" />
            <div className="flex min-w-0 flex-1 flex-col items-start justify-center">
              <p className="w-full truncate text-start text-[#36363C] group-16 font-bold leading-tight" title="14">
                14
              </p>
              <p
                className="w-full truncate text-start text-[#36363C] group-10 font-semibold capitalize"
                title={t["marriages"]}
              >
                {t["marriages"]}
              </p>
            </div>
          </div>
        </div>
        {SHOW_INTRO_VIDEOS && (
          <>
            <div
              className="mt-14 relative cursor-pointer group rounded-2xl overflow-hidden aspect-[344/221] max-w-[344px] w-full mx-auto"
              onClick={() => setIsPlayerOpen(true)}
            >
              <NetworkImage
                src={config?.intro_video_thumbnail_url}
                fallbackSrc="/assets/images/Frame 2095586523.png"
                alt={t["video"]}
                fill
                className="object-cover transition-transform duration-300 group-hover:scale-105"
                priority
              />
              <div className="absolute inset-0 bg-black/10 transition-colors duration-300 group-hover:bg-black/20" />
              <IntroPlayButtonIcon className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 transition-transform duration-300 group-hover:scale-110 active:scale-95" />
            </div>

            <VideoPlayer
              isOpen={isPlayerOpen}
              onClose={() => setIsPlayerOpen(false)}
              videoUrl={config?.intro_video_url}
            />
          </>
        )}
        <div className="pointer-events-none fixed bottom-0 left-1/2 z-20 w-full max-w-[834px] -translate-x-1/2 bg-[#F5F5F5]">
          <div
            style={{ paddingBottom: "calc(20px + var(--safe-bottom))" }}
            className="pointer-events-auto px-[17px] md:px-8 pt-3"
          >
            <Button
              onClick={handleSubmit}
              disabled={isSubmitting}
              isLoading={isSubmitting}
            >
              {t["Submit"]}
            </Button>
          </div>
        </div>
      </main>

      <SectionOverlayHost
        open={isStepsOpen}
        onClose={handleCloseSteps}
      >
        {isStepsOpen && (
          <SliderPage onClose={handleCloseSteps} />
        )}
      </SectionOverlayHost>
    </>
  );
}