"use client";
import {
  Accordion,
  AccordionItem,
  AccordionTrigger,
  AccordionContent,
} from "@/components/ui/accordion";
import { Input } from "@/components/ui/input";
import Link from "next/link";
import Image from "next/image";
import { X, EyeOff, Eye, Star } from "lucide-react";
import React, {
  useState,
  useEffect,
  useRef,
  useMemo,
  useCallback,
} from "react";
import { Category } from "@/lib/types";
import { Badge } from "./ui/badge";
import { Button } from "./ui/button";
import clsx from "clsx";

const ScriptBrowser = ({
  items,
  selectedScript,
  setSelectedScript,
}: {
  items: Category[];
  selectedScript: string | null;
  setSelectedScript: (script: string | null) => void;
}) => {
  const [links, setLinks] = useState<Category[]>([]);
  const [searchTerm, setSearchTerm] = useState("");
  const inputRef = useRef<HTMLInputElement>(null);
  const [expandedItems, setExpandedItems] = useState<string[]>([]);
  const [showLogos, setShowLogos] = useState<boolean>(() => {
    const saved = localStorage.getItem("showLogos");
    return saved ? JSON.parse(saved) : true;
  });
  const linkRefs = useRef<{ [key: string]: HTMLAnchorElement | null }>({});

  useEffect(() => {
    localStorage.setItem("showLogos", JSON.stringify(showLogos));
  }, [showLogos]);

  useEffect(() => {
    if (items) {
      setLinks(items);
    }
  }, [items]);

  useEffect(() => {
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === "/") {
        inputRef.current?.focus();
        event.preventDefault();
      }
      if (event.key === "Escape") {
        handleSearch("");
      }
    };

    document.addEventListener("keydown", handleKeyDown);
    return () => {
      document.removeEventListener("keydown", handleKeyDown);
    };
  }, []);

  const handleSearch = (value: string) => {
    setSearchTerm(value);
  };

  const filteredLinks = useMemo(() => {
    return links.filter((category) =>
      category.expand.items.some((script) =>
        script.title.toLowerCase().includes(searchTerm.toLowerCase()),
      ),
    );
  }, [links, searchTerm]);

  useEffect(() => {
    if (searchTerm) {
      const expanded = filteredLinks.map((category) => category.catagoryName);
      setExpandedItems(expanded);
    } else {
      setExpandedItems([]);
    }
  }, [searchTerm, filteredLinks]);

  useEffect(() => {
    const matchingScripts = links
      .flatMap((category) => category.expand.items)
      .filter((script) =>
        script.title.toLowerCase().includes(searchTerm.toLowerCase()),
      );

    if (matchingScripts.length === 1) {
      const scriptTitle = matchingScripts[0].title;
      setSelectedScript(scriptTitle);

      const linkElement = linkRefs.current[scriptTitle];
      if (linkElement) {
        linkElement.click();
      }
    } else {
      setSelectedScript(null);
    }
  }, [searchTerm, links, setSelectedScript]);

  const handleSelected = useCallback(
    (title: string) => {
      setSelectedScript(title);
    },
    [setSelectedScript],
  );

  useEffect(() => {
    if (selectedScript) {
      const category = links.find((category) =>
        category.expand.items.some((script) => script.title === selectedScript),
      );
      if (category) {
        setExpandedItems((prev) =>
          Array.from(new Set([...prev, category.catagoryName])),
        );
        handleSelected(selectedScript);
      }
    }
  }, [selectedScript, links, handleSelected]);

  const handleAccordionChange = (value: string[]) => {
    setExpandedItems(value);
  };

  const accordionProps = useMemo(() => {
    return searchTerm
      ? {
          type: "multiple" as const,
          value: expandedItems,
          onValueChange: handleAccordionChange,
        }
      : {
          type: "single" as const,
          collapsible: true,
          value: expandedItems[0],
          onValueChange: (value: string) => handleAccordionChange([value]),
        };
  }, [searchTerm, expandedItems]);

  return (
    <div className="flex min-w-72 flex-col sm:max-w-72">
      <div className="mb-2 flex items-end justify-between">
        <h1 className=" text-xl font-bold">Categories</h1>
        <p className="text-xs italic text-muted-foreground">
          {links.reduce(
            (acc, category) => acc + category.expand.items.length,
            0,
          )}{" "}
          Total scripts
        </p>
      </div>
      <div className="relative">
        <div className="mb-1 flex items-center">
          <Input
            className="flex-grow bg-accent/30"
            type="text"
            placeholder="Search..."
            onChange={(e) => handleSearch(e.target.value)}
            ref={inputRef}
            value={searchTerm}
          />
          {searchTerm && (
            <X
              className="ml-2 h-4 w-4 cursor-pointer"
              onClick={() => handleSearch("")}
              style={{
                position: "absolute",
                right: "0.5rem",
              }}
            />
          )}
        </div>
        {searchTerm ? (
          <div className="mb-2 ml-2 text-xs text-muted-foreground">
            <p className="text-sm">
              Press
              <kbd className="m-1 inline-flex h-5 items-center gap-1 rounded border bg-muted px-1.5 font-mono text-[10px] font-medium">
                <span className="text-xs">esc</span>
              </kbd>
              to clear the search
            </p>
          </div>
        ) : (
          <div className="mb-2 ml-2 text-xs text-muted-foreground">
            <p className="text-sm">
              Press
              <kbd className="m-1 inline-flex h-5 items-center gap-1 rounded border bg-muted px-1.5 font-mono text-[10px] font-medium">
                <span className="text-xs">/</span>
              </kbd>
              to search
            </p>
          </div>
        )}
      </div>
      <div className="rounded-lg">
        <Accordion {...accordionProps}>
          {filteredLinks.map((category) => (
            <AccordionItem
              key={category.collectionId}
              value={category.catagoryName}
              className={clsx("sm:text-md flex flex-col border-none", {
                "rounded-lg bg-accent/30":
                  expandedItems.includes(category.catagoryName) &&
                  expandedItems.length <= 1,
              })}
            >
              <AccordionTrigger
                className={clsx(
                  "duration-250 rounded-lg transition ease-in-out hover:-translate-y-1 hover:scale-105 hover:bg-accent",
                  { "": expandedItems.includes(category.catagoryName) },
                )}
              >
                <div className="mr-2 flex w-full items-center justify-between">
                  <span className="pl-2">{category.catagoryName} </span>
                  <span className="rounded-full bg-gray-200 px-2 py-1 text-xs text-muted-foreground hover:no-underline dark:bg-blue-800/20">
                    {category.expand.items.length}
                  </span>
                </div>{" "}
              </AccordionTrigger>
              <AccordionContent
                data-state={
                  expandedItems.includes(category.catagoryName)
                    ? "open"
                    : "closed"
                }
                className="pt-0"
              >
                {category.expand.items
                  .filter((script) =>
                    script.title
                      .toLowerCase()
                      .includes(searchTerm.toLowerCase()),
                  )
                  .map((script, index) => (
                    <p key={index}>
                      <Link
                        href={{
                          pathname: "/scripts",
                          query: { id: script.title },
                        }}
                        className={`flex cursor-pointer items-center justify-between gap-1 px-1 py-1 text-muted-foreground hover:rounded-lg hover:bg-accent/60 hover:dark:bg-accent/20 ${
                          selectedScript === script.title
                            ? "rounded-lg bg-accent font-semibold dark:bg-accent/30 dark:text-white"
                            : ""
                        }`}
                        onClick={() => handleSelected(script.title)}
                        ref={(el) => {
                          linkRefs.current[script.title] = el;
                        }}
                      >
                        {showLogos && script.logo && (
                          <Image
                            src={script.logo}
                            priority={true}
                            alt={script.title}
                            width={16}
                            height={16}
                            className="mr-1 rounded-full"
                          />
                        )}
                        <span className="flex items-center gap-2">
                          {script.title}
                          {script.isMostViewed && (
                            <Star className="h-3 w-3 text-yellow-500"></Star>
                          )}
                        </span>
                        <Badge
                          className={clsx(
                            "ml-auto w-[37.69px] justify-center text-center",
                            {
                              "text-primary/75": script.item_type === "VM",
                              "text-yellow-500/75": script.item_type === "LXC",
                              "border-none": script.item_type === "",
                              hidden: !["VM", "LXC", ""].includes(
                                script.item_type,
                              ),
                            },
                          )}
                        >
                          {script.item_type}
                        </Badge>
                      </Link>
                    </p>
                  ))}
              </AccordionContent>
            </AccordionItem>
          ))}
        </Accordion>
      </div>
      <p className="ml-4 mt-6 flex justify-center text-xs text-muted-foreground">
        <Button
          variant="outline"
          className="cursor-pointer"
          onClick={() => setShowLogos(!showLogos)}
        >
          {showLogos ? (
            <>
              <EyeOff className="mr-1 inline-block h-4 w-4 align-text-bottom" />
              Hide Logos
            </>
          ) : (
            <>
              <Eye className="mr-1 inline-block h-4 w-4 align-text-bottom" />
              Show Logos
            </>
          )}
        </Button>
      </p>
    </div>
  );
};

export default ScriptBrowser;