"use client";

import React, { useState } from "react";
import { Search } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog";
import { useRouter, useSearchParams, usePathname } from "next/navigation";
import { SearchIcon } from "@/components/icons";

interface SearchBarProps {
  isMobile: boolean;
  searchPlaceholder: string;
  isOpen?: boolean;
  onClose?: () => void;
  className?: string;
  locale?: string;
}

export default function SearchBar({
  isMobile,
  searchPlaceholder,
  isOpen,
  onClose,
  className = "",
  locale = "ru",
}: SearchBarProps) {
  const router = useRouter();
  const searchParams = useSearchParams();
  const pathname = usePathname();
  const [searchValue, setSearchValue] = useState("");

  React.useEffect(() => {
    // Sync URL param to input when URL changes
    if (pathname?.includes("/search")) {
      const q = searchParams?.get("q") || "";
      if (q !== searchValue.trim()) {
        setSearchValue(q);
      }
    } else {
      setSearchValue("");
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [searchParams, pathname]);

  React.useEffect(() => {
    // Debounce updates to the URL query when typing on search page
    if (pathname?.includes("/search")) {
      const delayDebounceFn = setTimeout(() => {
        const q = searchParams?.get("q") || "";
        const curVal = searchValue.trim();
        if (curVal !== q && curVal !== "") {
          router.push(`/${locale}/search?q=${encodeURIComponent(curVal)}`);
        } else if (curVal === "" && q !== "") {
          router.push(`/${locale}/search`);
        }
      }, 500);

      return () => clearTimeout(delayDebounceFn);
    }
  }, [searchValue, pathname, router, locale, searchParams]);

  const performSearch = () => {
    if (searchValue.trim()) {
      router.push(
        `/${locale}/search?q=${encodeURIComponent(searchValue.trim())}`,
      );
      if (onClose) onClose();
    }
  };

  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
    if (e.key === "Enter") {
      performSearch();
    }
  };

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

  if (isMobile) {
    return (
      <Dialog open={isOpen} onOpenChange={onClose}>
        <DialogContent className="top-4 translate-y-0 rounded-lg border-gray-200">
          <DialogHeader>
            <DialogTitle className="text-xl font-bold">
              {searchPlaceholder}
            </DialogTitle>
          </DialogHeader>
          <div className="relative">
            <div className="relative">
              <Input
                type="text"
                placeholder={searchPlaceholder}
                value={searchValue}
                onChange={(e) => handleSearch(e.target.value)}
                onKeyDown={handleKeyDown}
                className="h-12 rounded-lg pl-12 pr-10 border-gray-200 focus:border-gray-900 focus-visible:border-gray-900 focus-visible:ring-0 transition-colors"
                autoFocus
              />
              <Search
                className="absolute left-4 top-1/2 -translate-y-1/2 h-5 w-5 text-gray-400 cursor-pointer"
                onClick={performSearch}
              />
            </div>
          </div>
        </DialogContent>
      </Dialog>
    );
  }

  return (
    <div
      className={`bg-gray-900 rounded-lg flex items-center relative shadow-sm hover:shadow-md transition-shadow duration-200 ${className}`}
    >
      <div className="w-full relative">
        <div className="relative">
          <Input
            type="text"
            placeholder={searchPlaceholder}
            value={searchValue}
            onChange={(e) => handleSearch(e.target.value)}
            onKeyDown={handleKeyDown}
            className="border w-full rounded-lg h-11 border-gray-900 bg-white pl-12 pr-4 focus-visible:ring-2 focus-visible:ring-gray-300 transition-all"
          />
          <Search className="absolute left-4 top-1/2 -translate-y-1/2 h-5 w-5 text-gray-400 pointer-events-none" />
        </div>
      </div>
      <Button
        size="icon"
        onClick={performSearch}
        className="h-11 w-11 hover:bg-gray-800 cursor-pointer bg-transparent flex items-center mr-1 text-white rounded-lg transition-colors"
      >
        <SearchIcon />
      </Button>
    </div>
  );
}