"use client";

import type { LucideIcon } from "lucide-react";
import {
  ArrowLeft,
  ArrowRight,
  Brain,
  Circle,
  ClipboardList,
  MessageSquare,
  Rocket,
  Share2,
  Users,
} from "lucide-react";
import { startTransition, useEffect, useRef, useState } from "react";

import { AspectRatio } from "@/components/ui/aspect-ratio";
import { Button } from "@/components/ui/button";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import { cn } from "@/lib/utils";

const TAB_ITEMS = [
  {
    id: "team-sync",
    value: "team_sync",
    name: "داده پراکنده را به تصمیم تبدیل کنید",
    icon: Users,
    color: "#2563EB",
    image: {
      src: "/block-media/shadcnblocks/block/photos/redd-f-5U_28ojjgms-unsplash.jpg",
      alt: "گزارش عملکرد",
    },
    summary: "ویجت‌های موردنیاز هر تیم را بچینید و فقط معیارهای مرتبط را ببینید.",
    link: "#",
  },
  {
    id: "discussions",
    value: "discussions",
    name: "تحلیل داده",
    icon: MessageSquare,
    color: "#F97316",
    image: {
      src: "/block-media/shadcnblocks/block/photos/annie-spratt-hCb3lIB8L8E-unsplash.jpg",
      alt: "داشبورد تحلیل داده",
    },
    summary: "داده را بر اساس محصول، منطقه یا کانال برش دهید و الگو پیدا کنید.",
    link: "#",
  },
  {
    id: "knowledge-share",
    value: "knowledge_share",
    name: "داشبورد",
    icon: Share2,
    color: "#A855F7",
    image: {
      src: "/block-media/shadcnblocks/block/photos/annie-spratt-MChSQHxGZrQ-unsplash.jpg",
      alt: "نمودار شاخص کلیدی",
    },
    summary: "تغییرات مهم را در طول زمان دنبال کنید و نقطه عطف را شناسایی کنید.",
    link: "#",
  },
  {
    id: "brainstorming",
    value: "brainstorming",
    name: "شاخص کلیدی",
    icon: Brain,
    color: "#10B981",
    image: {
      src: "/block-media/shadcnblocks/block/photos/dylan-gillis-KdeqA3aTnBY-unsplash.jpg",
      alt: "گزارش عملکرد",
    },
    summary: "وقتی شاخص از حد مجاز گذشت، فوراً مطلع شوید.",
    link: "#",
  },
  {
    id: "task-tracking",
    value: "task_tracking",
    name: "بینش لحظه‌ای",
    icon: ClipboardList,
    color: "#EF4444",
    image: {
      src: "/block-media/shadcnblocks/block/photos/studio-republic-fotKKqWNMQ4-unsplash.jpg",
      alt: "داشبورد تحلیل داده",
    },
    summary: "ویجت‌های موردنیاز هر تیم را بچینید و فقط معیارهای مرتبط را ببینید.",
    link: "#",
  },
  {
    id: "launch-prep",
    value: "launch_prep",
    name: "تحلیل داده",
    icon: Rocket,
    color: "#EAB308",
    image: {
      src: "/block-media/shadcnblocks/block/photos/annie-spratt-vGgn0xLdy8s-unsplash.jpg",
      alt: "نمودار شاخص کلیدی",
    },
    summary: "داده را بر اساس محصول، منطقه یا کانال برش دهید و الگو پیدا کنید.",
    link: "#",
  },
] as const;

type TabValue = (typeof TAB_ITEMS)[number]["value"];

interface TabLabelProps {
  value: string;
}

const TabLabel = ({ value }: TabLabelProps) => {
  const [label, setLabel] = useState<{
    name: string;
    icon: LucideIcon;
    color: string;
  }>({
    name: "",
    icon: Circle,
    color: "",
  });

  useEffect(() => {
    const tab = TAB_ITEMS.find((trigger) => trigger.value === value);
    if (!tab) return;

    startTransition(() => {
      setLabel({
        name: tab.name,
        icon: tab.icon,
        color: tab.color,
      });
    });
  }, [value]);

  const Icon = label.icon;

  return (
    <div className="mb-8 flex items-center justify-center gap-6 xl:hidden">
      <div
        className="flex size-8 rounded-md"
        style={{ backgroundColor: label.color }}
      >
        <Icon className="m-auto stroke-white" />
      </div>
      <div className="text-lg">{label.name}</div>
    </div>
  );
};

interface Feature216Props {
  className?: string;
}

const Feature216 = ({ className }: Feature216Props) => {
  const [buttonPosition, setButtonPosition] = useState<number>(0);
  // Rightmost tab in RTL (`justify-start`) is the first item.
  const [tabValue, setTabValue] = useState<TabValue>(TAB_ITEMS[0].value);
  const triggerRefs = useRef<HTMLButtonElement[]>([]);
  const imageRef = useRef<HTMLDivElement | null>(null);

  const updateBottom = () => {
    if (imageRef.current) {
      const height = imageRef.current.getBoundingClientRect().height / 2;
      startTransition(() => {
        setButtonPosition(height);
      });
    }
  };

  useEffect(() => {
    updateBottom();
    window.addEventListener("resize", updateBottom);
    return () => {
      window.removeEventListener("resize", updateBottom);
    };
  }, []);

  const getCurrentTabIndex = () => {
    return TAB_ITEMS.findIndex((elem) => elem.value === tabValue);
  };

  const handleTabNavigation = (direction: "next" | "prev") => {
    triggerRefs.current.forEach((ref) => {
      ref.classList.add("grayscale-[1]", "opacity-[0.2]");
    });

    const currentIndex = getCurrentTabIndex();
    if (currentIndex === -1) return;

    const nextIndex =
      direction === "next" ? currentIndex + 1 : currentIndex - 1;

    const isInBounds = nextIndex >= 0 && nextIndex < TAB_ITEMS.length;

    if (isInBounds) {
      setTabValue(TAB_ITEMS[nextIndex].value);
    }
  };

  const onValueChange = (value: string) => {
    setTabValue(value as TabValue);
  };

  const currentIndex = getCurrentTabIndex();

  return (
    <section dir="rtl" lang="fa" className={cn("py-32", className)}>
      <div className="container">
        <h2 className="mb-10 text-center text-3xl font-light text-balance md:text-xl">
          شاخص‌های کلیدی را یکجا ببینید
        </h2>
        <Tabs value={tabValue} onValueChange={onValueChange} className="w-full">
          <TabsList className="hidden !h-auto w-full !justify-start items-end gap-12 bg-transparent pb-10 xl:flex">
            {TAB_ITEMS.map((trigger, index) => {
              const Icon = trigger.icon;

              return (
                <TabsTrigger
                  ref={(el) => {
                    if (el) {
                      triggerRefs.current[index] = el;
                    } else {
                      delete triggerRefs.current[index];
                    }
                  }}
                  className="flex !h-auto flex-col items-center gap-5 !border-none !bg-transparent p-0 opacity-[0.2] !shadow-none grayscale-[1] hover:!bg-transparent hover:opacity-[0.5] hover:grayscale-[0] data-[state=active]:!bg-transparent data-[state=active]:opacity-100 data-[state=active]:!shadow-none data-[state=active]:grayscale-0 dark:!bg-transparent dark:data-[state=active]:!bg-transparent"
                  key={trigger.id}
                  value={trigger.value}
                  data-index={index}
                >
                  <div
                    className="flex size-8 rounded-md"
                    style={{ backgroundColor: trigger.color }}
                  >
                    <Icon className="m-auto stroke-white" />
                  </div>
                  <div className="text-xl font-normal">{trigger.name}</div>
                </TabsTrigger>
              );
            })}
          </TabsList>
          <div className="relative">
            {TAB_ITEMS.map((tab) => (
              <TabsContent
                key={tab.id}
                value={tab.value}
                className="animate-in duration-300 ease-in-out fade-in"
              >
                <TabLabel value={tab.value} />
                <div className="w-full" ref={imageRef}>
                  <AspectRatio
                    ratio={1.847058824}
                    className="w-full overflow-hidden rounded-lg border shadow-xl"
                  >
                    <img
                      src={tab.image.src}
                      alt={tab.image.alt}
                      className="block size-full object-cover object-center"
                    />
                  </AspectRatio>
                </div>
                <p className="mt-4 text-center text-sm text-pretty text-muted-foreground">
                  {tab.summary}
                </p>
              </TabsContent>
            ))}
            {/* Physical left (end in RTL): previous — moves toward rightmost tabs */}
            <div
              className="absolute end-0 translate-y-1/2"
              style={{ bottom: buttonPosition }}
            >
              <Button
                variant="secondary"
                disabled={currentIndex <= 0}
                onClick={() => handleTabNavigation("prev")}
                size="lg"
                className="size-12 translate-x-1/2 rounded-full border shadow-lg rtl:-translate-x-1/2"
              >
                <ArrowRight />
              </Button>
            </div>
            {/* Physical right (start in RTL): next — moves toward leftmost tabs */}
            <div
              className="absolute start-0 translate-y-1/2"
              style={{ bottom: buttonPosition }}
            >
              <Button
                variant="secondary"
                disabled={currentIndex >= TAB_ITEMS.length - 1}
                onClick={() => handleTabNavigation("next")}
                size="lg"
                className="size-12 -translate-x-1/2 rounded-full border shadow-lg rtl:translate-x-1/2"
              >
                <ArrowLeft />
              </Button>
            </div>
          </div>
        </Tabs>
      </div>
    </section>
  );
};

export { Feature216 };