import React from 'react';
import { Helmet } from 'react-helmet-async';
import TOOL_FAQS from '../data/faqs';

const SEO = ({ 
  title, 
  description, 
  keywords,
  path = '/',
  type = 'website',
  image = 'https://dewe.dev/og-image.png',
  toolId = null
}) => {
  const siteUrl = 'https://dewe.dev';
  const fullUrl = `${siteUrl}${path}`;
  const fullTitle = title ? `${title} | Developer Tools` : 'Developer Tools - Essential Web Developer Utilities';
  const defaultDescription = 'Free online developer tools for JSON, CSV, Base64, URL encoding, code beautification, and more. Privacy-first, no data storage, all processing in your browser.';
  const metaDescription = description || defaultDescription;
  const defaultKeywords = 'developer tools, json editor, csv converter, base64 encoder, url encoder, code beautifier, diff tool, web developer utilities, online tools';
  const metaKeywords = keywords || defaultKeywords;

  // Get FAQ data for this tool
  const faqs = toolId && TOOL_FAQS[toolId] ? TOOL_FAQS[toolId] : null;

  // Generate breadcrumb schema
  const breadcrumbSchema = {
    "@context": "https://schema.org",
    "@type": "BreadcrumbList",
    "itemListElement": [
      {
        "@type": "ListItem",
        "position": 1,
        "name": "Home",
        "item": siteUrl
      }
    ]
  };

  // Add current page to breadcrumb if not homepage
  if (path !== '/') {
    breadcrumbSchema.itemListElement.push({
      "@type": "ListItem",
      "position": 2,
      "name": title || "Page",
      "item": fullUrl
    });
  }

  // Generate FAQ schema if FAQs exist
  const faqSchema = faqs ? {
    "@context": "https://schema.org",
    "@type": "FAQPage",
    "mainEntity": faqs.map(faq => ({
      "@type": "Question",
      "name": faq.question,
      "acceptedAnswer": {
        "@type": "Answer",
        "text": faq.answer
      }
    }))
  } : null;

  return (
    <Helmet>
      {/* Basic Meta Tags */}
      <title>{fullTitle}</title>
      <meta name="description" content={metaDescription} />
      <meta name="keywords" content={metaKeywords} />
      <link rel="canonical" href={fullUrl} />

      {/* Open Graph / Facebook */}
      <meta property="og:type" content={type} />
      <meta property="og:url" content={fullUrl} />
      <meta property="og:title" content={fullTitle} />
      <meta property="og:description" content={metaDescription} />
      <meta property="og:image" content={image} />
      <meta property="og:site_name" content="Developer Tools" />

      {/* Twitter Card */}
      <meta name="twitter:card" content="summary_large_image" />
      <meta name="twitter:url" content={fullUrl} />
      <meta name="twitter:title" content={fullTitle} />
      <meta name="twitter:description" content={metaDescription} />
      <meta name="twitter:image" content={image} />

      {/* Additional SEO Tags */}
      <meta name="robots" content="index, follow" />
      <meta name="googlebot" content="index, follow" />
      <meta name="author" content="Developer Tools" />
      <meta name="language" content="English" />
      
      {/* JSON-LD Structured Data - WebApplication */}
      <script type="application/ld+json">
        {JSON.stringify({
          "@context": "https://schema.org",
          "@type": "WebApplication",
          "name": fullTitle,
          "description": metaDescription,
          "url": fullUrl,
          "applicationCategory": "DeveloperApplication",
          "operatingSystem": "Any",
          "offers": {
            "@type": "Offer",
            "price": "0",
            "priceCurrency": "USD"
          },
          "provider": {
            "@type": "Organization",
            "name": "Developer Tools",
            "url": siteUrl
          }
        })}
      </script>

      {/* JSON-LD Structured Data - Breadcrumb */}
      <script type="application/ld+json">
        {JSON.stringify(breadcrumbSchema)}
      </script>

      {/* JSON-LD Structured Data - FAQ (if available) */}
      {faqSchema && (
        <script type="application/ld+json">
          {JSON.stringify(faqSchema)}
        </script>
      )}
    </Helmet>
  );
};

export default SEO;