"use client";

import { useState, useRef, useEffect } from "react";
import Link from "next/link";
import { Vacancy } from "@/types";
import VacancyApplicationForm from "@/components/VacancyApplicationForm";

import {
  FaMapMarkerAlt,
  FaBriefcase,
  FaClock,
  FaCalendarAlt,
  FaDollarSign,
  FaGraduationCap,
  FaShareAlt,
  FaCheckCircle,
  FaBuilding,
  FaLink,
  FaListUl,
  FaInfoCircle,
  FaStar,
  FaGift,
  FaTools,
} from "react-icons/fa";
import { formatDate } from "@/lib/helpers";
import { COLORS } from "@/constants";
import Image from "next/image";
import { MetadataItem } from "./MetadataItem";
import { Badge } from "./Badge";
import { ListSection } from "./ListSection";
import Button from "@/components/ui/Button";

interface VacancyClientContentProps {
  vacancy: Vacancy & {
    company?: { name: string; logoUrl?: string; websiteUrl?: string };
    skills?: string[];
  };
  shareUrl: string;
  shareTitle: string;
}

export default function VacancyClientContent({
  vacancy,
  shareUrl,
  shareTitle,
}: VacancyClientContentProps) {
  const [showApplyForm, setShowApplyForm] = useState(false);
  const applyFormRef = useRef<HTMLDivElement>(null);

  const handleApplyClick = () => {
    setShowApplyForm(true);
  };

  useEffect(() => {
    if (showApplyForm && applyFormRef.current) {
      setTimeout(() => {
        applyFormRef.current?.scrollIntoView({
          behavior: "smooth",
          block: "start",
        });
      }, 100);
    }
  }, [showApplyForm]);

  return (
    // Container is now within the client component
    <div className="container mx-auto px-6">
      {/* --- Re-include the FULL Company Header --- */}
      {vacancy.company && (
        <div className="mb-10 flex flex-col sm:flex-row items-center justify-between gap-6 p-6 bg-gray-50 shadow-md rounded-lg border border-gray-200">
          <div className="flex items-center gap-4">
            {vacancy.company.logoUrl ? (
              <Image
                src={vacancy.company.logoUrl}
                alt={`${vacancy.company.name} Logo`}
                className="h-16 w-16 object-contain rounded-md flex-shrink-0"
              />
            ) : (
              <div className="h-16 w-16 bg-gray-200 rounded-md flex items-center justify-center flex-shrink-0">
                <FaBuilding
                  className="h-8 w-8 text-primary"
                  style={{ color: COLORS.primary }}
                />
              </div>
            )}
            <div>
              <h1 className="text-3xl md:text-4xl font-bold text-gray-900">
                {vacancy.title}
              </h1>
              <p className="text-lg text-gray-700">at {vacancy.company.name}</p>
              {vacancy.company.websiteUrl && (
                <Link
                  href={vacancy.company.websiteUrl}
                  target="_blank"
                  rel="noopener noreferrer"
                  className="text-sm text-blue-600 hover:text-blue-800 inline-flex items-center gap-1 group mt-1"
                >
                  Visit website{" "}
                  <FaLink className="h-4 w-4 transition-transform duration-200 group-hover:translate-x-1" />
                </Link>
              )}
            </div>
          </div>
          {/* Apply Button in Header (conditional) */}
          {!showApplyForm && (
            <button
              onClick={handleApplyClick}
              className="inline-block bg-gray-800 text-white font-bold py-3 px-8 rounded-md hover:bg-gray-900 transition-colors duration-300 whitespace-nowrap"
            >
              Apply Now
            </button>
          )}
        </div>
      )}
      {/* --- End Company Header --- */}

      {/* --- Main Grid Layout --- */}
      <div className="grid grid-cols-1 lg:grid-cols-3 gap-10">
        {/* --- Main Content Area (Left Column) --- */}
        <div className="lg:col-span-2 bg-white shadow-lg rounded-lg p-6 md:p-8 border border-gray-200">
          {/* Title if no company header */}
          {!vacancy.company && (
            <h1 className="text-3xl md:text-4xl font-bold mb-6 text-gray-900">
              {vacancy.title}
            </h1>
          )}

          {/* Job Description */}
          <div className="mb-8">
            <h3 className="flex items-center gap-2 text-xl font-semibold mb-3 text-gray-900 border-b border-gray-200 pb-2">
              <FaInfoCircle
                className="h-5 w-5 text-primary"
                style={{ color: COLORS.primary }}
              />{" "}
              Job Description
            </h3>
            <div className="prose prose-sm sm:prose-base max-w-none text-gray-700 font-poppins leading-relaxed">
              <p>{vacancy.description}</p>
            </div>
          </div>

          {/* --- All List Sections (Responsibilities, Qualifications, Skills, Benefits) --- */}
          <ListSection
            title="Responsibilities"
            items={vacancy.responsibilities}
            icon={FaListUl}
          />
          <ListSection
            title="Required Qualifications"
            items={vacancy.requiredQualifications}
            icon={FaStar}
          />
          <ListSection
            title="Preferred Qualifications"
            items={vacancy.preferredQualifications}
            icon={FaStar}
          />

          {/* Skills Section - RE-INCLUDED */}
          {vacancy.skills && vacancy.skills.length > 0 && (
            <div className="mb-8">
              <h3 className="flex items-center gap-2 text-xl font-semibold mb-4 text-gray-900 border-b border-gray-200 pb-2">
                <FaTools
                  className="h-5 w-5 text-primary"
                  style={{ color: COLORS.primary }}
                />{" "}
                Skills
              </h3>
              <div className="flex flex-wrap gap-2 mt-3">
                {vacancy.skills.map((skill, index) => (
                  <Badge key={index}>{skill}</Badge>
                ))}
              </div>
            </div>
          )}

          {/* Benefits Section - RE-INCLUDED */}
          {vacancy.benefits && vacancy.benefits.length > 0 && (
            <div className="mb-8">
              <h3 className="flex items-center gap-2 text-xl font-semibold mb-3 text-gray-900 border-b border-gray-200 pb-2">
                <FaGift
                  className="h-5 w-5 text-primary"
                  style={{ color: COLORS.primary }}
                />{" "}
                Benefits
              </h3>
              <ul className="grid grid-cols-1 sm:grid-cols-2 gap-x-6 gap-y-2 text-gray-700 mt-3 text-sm">
                {vacancy.benefits.map((item, index) => (
                  <li
                    key={index}
                    className="flex items-center space-x-2 font-poppins"
                  >
                    <FaCheckCircle className="h-4 w-4 text-green-600 flex-shrink-0" />
                    <span>{item}</span>
                  </li>
                ))}
              </ul>
            </div>
          )}
          {/* --- End List Sections --- */}

          {/* Apply button below main content (conditional) */}
          {!showApplyForm && (
            <div className="mt-10 text-center lg:text-left">
              <Button variant="primary" onClick={handleApplyClick}>
                Apply for this Position
              </Button>
            </div>
          )}
        </div>
        {/* --- End Main Content Area --- */}

        {/* --- Sidebar (Right Column) --- */}
        <div className="lg:col-span-1 space-y-8">
          {/* Metadata Card - Exactly as before */}
          <div className="bg-gray-50 shadow-md rounded-lg p-6 border-l-4 border-primary">
            <h3 className="text-xl font-semibold mb-5 text-gray-900 font-poppins">
              Job Overview
            </h3>
            <div className="space-y-4">
              <MetadataItem
                icon={FaBuilding}
                label="Department"
                value={vacancy.department}
              />
              <MetadataItem
                icon={FaMapMarkerAlt}
                label="Location"
                value={
                  <>
                    {vacancy.location.city}, {vacancy.location.country}{" "}
                    {vacancy.location.remote && <Badge>Remote Possible</Badge>}
                  </>
                }
              />
              <MetadataItem
                icon={FaBriefcase}
                label="Type"
                value={<Badge>{vacancy.employmentType}</Badge>}
              />
              <MetadataItem
                icon={FaGraduationCap}
                label="Level"
                value={vacancy.experienceLevel}
              />
              {vacancy.salary && (
                <MetadataItem
                  icon={FaDollarSign}
                  label="Salary"
                  value={
                    <span className="font-semibold text-gray-800">
                      {vacancy.salary.min.toLocaleString()} -{" "}
                      {vacancy.salary.max.toLocaleString()}{" "}
                      {vacancy.salary.currency} {vacancy.salary.period}
                    </span>
                  }
                />
              )}
              <MetadataItem
                icon={FaCalendarAlt}
                label="Posted"
                value={formatDate(vacancy.postedDate)}
              />
              {vacancy.applicationDeadline && (
                <MetadataItem
                  icon={FaClock}
                  label="Apply by"
                  value={formatDate(vacancy.applicationDeadline)}
                />
              )}
            </div>
          </div>

          {/* Share Card - Exactly as before */}
          <div className="bg-gray-50 shadow-md rounded-lg p-6 border-l-4 border-primary">
            <h3 className="text-xl font-semibold mb-4 text-gray-900 flex items-center gap-2 font-poppins">
              <FaShareAlt
                className="h-5 w-5 text-primary"
                style={{ color: COLORS.primary }}
              />{" "}
              Share this opening
            </h3>
            <div className="flex space-x-3 text-sm font-poppins">
              <a
                href={`https://www.linkedin.com/sharing/share-offsite/?url=${encodeURIComponent(
                  shareUrl
                )}`}
                target="_blank"
                rel="noopener noreferrer"
                className="text-blue-600 hover:underline"
              >
                LinkedIn
              </a>
              <a
                href={`https://twitter.com/intent/tweet?url=${encodeURIComponent(
                  shareUrl
                )}&text=${shareTitle}`}
                target="_blank"
                rel="noopener noreferrer"
                className="text-blue-600 hover:underline"
              >
                Twitter
              </a>
              <a
                href={`mailto:?subject=${shareTitle}&body=Check out this job opening: ${encodeURIComponent(
                  shareUrl
                )}`}
                className="text-gray-600 hover:underline"
              >
                Email
              </a>
            </div>
          </div>

          {/* --- Conditionally Rendered Application Form Section --- */}
          {showApplyForm && (
            <div
              ref={applyFormRef}
              id="apply-form-section"
              className="bg-white shadow-lg rounded-lg p-6 md:p-8 border border-gray-200 scroll-mt-20 lg:mt-0"
            >
              {" "}
              {/* scroll-mt helps anchor links, lg:mt-0 aligns with other cards */}
              <h2 className="text-2xl font-bold mb-6 text-center text-gray-900 font-poppins">
                Apply for: {vacancy.title}
              </h2>
              <VacancyApplicationForm
                vacancyId={vacancy.id}
                vacancyTitle={vacancy.title}
                // Pass a function to close the form if needed: onFormClose={() => setShowApplyForm(false)}
              />
            </div>
          )}
          {/* --- End Form Section --- */}
        </div>
        {/* --- End Sidebar --- */}
      </div>
      {/* --- End Main Grid --- */}
    </div> // End Container
  );
}