import type { BlogPost, AuthorProfile, PillarMeta, Testimonial, AggregateRating } from "./types";

const SITE_URL = "https://www.qrmaster.net";

export function websiteSchema() {
  return {
    '@context': 'https://schema.org',
    '@type': 'WebSite',
    '@id': `${SITE_URL}/#website`,
    name: 'QR Master',
    url: SITE_URL,
    inLanguage: 'en',
    mainEntityOfPage: SITE_URL,
    publisher: {
      '@id': `${SITE_URL}/#organization`,
    },
    potentialAction: {
      '@type': 'SearchAction',
      target: {
        '@type': 'EntryPoint',
        urlTemplate: `${SITE_URL}/blog?q={search_term_string}`,
      },
      'query-input': 'required name=search_term_string',
    },
  };
}

export function organizationSchema() {
  return {
    '@context': 'https://schema.org',
    '@type': 'Organization',
    '@id': `${SITE_URL}/#organization`,
    name: 'QR Master',
    alternateName: 'QRMaster',
    url: SITE_URL,
    logo: {
      '@type': 'ImageObject',
      url: `${SITE_URL}/static/og-image.png`,
      width: 1200,
      height: 630,
    },
    sameAs: [
      'https://www.wikidata.org/wiki/Q137918857',
      'https://x.com/TIMO_QRMASTER',
      'https://www.linkedin.com/in/qr-master-44b6863a2/',
      'https://www.instagram.com/qrmaster_net/',
      'https://www.pr.com/press-release/959199',
    ],
    contactPoint: [{
      '@type': 'ContactPoint',
      contactType: 'Customer Support',
      email: 'support@qrmaster.net',
      availableLanguage: ['en', 'de'],
    }],
  };
}


export function blogPostingSchema(post: BlogPost, author?: AuthorProfile) {
  const url = `${SITE_URL}/blog/${post.slug}`;

  // Use post.authorName if available (from AEO/GEO optimization), otherwise fall back to author profile
  const authorSchema = post.authorName
    ? {
        "@type": "Person",
        name: post.authorName,
        jobTitle: post.authorTitle,
        url: `${SITE_URL}/#organization`,
      }
    : author
      ? {
          "@type": "Person",
          name: author.name,
          url: `${SITE_URL}/authors/${author.slug}`,
          sameAs: author.sameAs ?? undefined,
          knowsAbout: author.knowsAbout ?? undefined
        }
      : {
          "@type": "Organization",
          name: "QR Master"
        };

  return {
    "@context": "https://schema.org",
    "@type": "BlogPosting",
    headline: post.title,
    description: post.description,
    url,
    datePublished: post.datePublished,
    dateModified: post.dateModified || post.datePublished,
    image: post.heroImage ? `${SITE_URL}${post.heroImage}` : undefined,
    author: authorSchema,
    publisher: {
      "@type": "Organization",
      name: "QR Master",
      url: SITE_URL,
      logo: {
        '@type': 'ImageObject',
        url: `${SITE_URL}/static/og-image.png`,
      }
    },
    isPartOf: {
      '@type': 'Blog',
      '@id': `${SITE_URL}/blog#blog`,
      name: 'QR Master Blog',
      url: `${SITE_URL}/blog`,
    },
  };
}

export function howToSchema(post: BlogPost, author?: AuthorProfile) {
  const url = `${SITE_URL}/blog/${post.slug}`;
  const steps = (post.keySteps ?? []).map((text, idx) => ({
    "@type": "HowToStep",
    position: idx + 1,
    name: `Step ${idx + 1}`,
    text
  }));

  // Use post.authorName if available, otherwise fall back to author profile
  const authorSchema = post.authorName
    ? { "@type": "Person", name: post.authorName, jobTitle: post.authorTitle }
    : author
      ? { "@type": "Person", name: author.name, url: `${SITE_URL}/authors/${author.slug}` }
      : undefined;

  return {
    "@context": "https://schema.org",
    "@type": "HowTo",
    name: post.title,
    description: post.description,
    url: `${url}#howto`,
    step: steps,
    author: authorSchema
  };
}

export function pillarPageSchema(meta: PillarMeta, posts: BlogPost[]) {
  const url = `${SITE_URL}/learn/${meta.key}`;
  return {
    "@context": "https://schema.org",
    "@type": "WebPage",
    name: meta.title,
    description: meta.description,
    url,
    mainEntity: {
      "@type": "ItemList",
      itemListElement: posts.map((p, i) => ({
        "@type": "ListItem",
        position: i + 1,
        url: `${SITE_URL}/blog/${p.slug}`,
        name: p.title
      }))
    }
  };
}

export function faqPageSchema(faqs: { question: string, answer: string }[]) {
  return {
    '@context': 'https://schema.org',
    '@type': 'FAQPage',
    mainEntity: faqs.map((faq) => ({
      '@type': 'Question',
      name: faq.question,
      acceptedAnswer: {
        '@type': 'Answer',
        text: faq.answer,
      },
    })),
  };
}

export function breadcrumbSchema(items: { name: string; url: string }[]) {
  return {
    '@context': 'https://schema.org',
    '@type': 'BreadcrumbList',
    itemListElement: items.map((item, index) => ({
      '@type': 'ListItem',
      position: index + 1,
      name: item.name,
      item: item.url.startsWith('http') ? item.url : `https://www.qrmaster.net${item.url}`,
    })),
  };
}

export function softwareApplicationSchema(aggregateRating?: AggregateRating) {
  const schema: any = {
    '@context': 'https://schema.org',
    '@type': 'SoftwareApplication',
    name: 'QR Master',
    applicationCategory: 'BusinessApplication',
    operatingSystem: 'Web Browser',
    offers: {
      '@type': 'Offer',
      price: '0',
      priceCurrency: 'EUR',
      availability: 'https://schema.org/InStock',
      priceValidUntil: '2026-12-31'
    },
    publisher: {
      '@id': `${SITE_URL}/#organization`,
    }
  };

  if (aggregateRating) {
    schema.aggregateRating = {
      '@type': 'AggregateRating',
      ratingValue: aggregateRating.ratingValue,
      reviewCount: aggregateRating.reviewCount,
      bestRating: aggregateRating.bestRating,
      worstRating: aggregateRating.worstRating
    };
  }

  return schema;
}

export function authorPageSchema(author: AuthorProfile, posts?: BlogPost[]) {
  const url = `${SITE_URL}/authors/${author.slug}`;
  return {
    '@context': 'https://schema.org',
    '@type': 'ProfilePage',
    mainEntity: {
      '@type': 'Person',
      '@id': url,
      name: author.name,
      jobTitle: author.role,
      description: author.bio,
      image: author.image ? `${SITE_URL}${author.image}` : undefined,
      sameAs: author.sameAs?.length ? author.sameAs : undefined,
      knowsAbout: author.knowsAbout?.length ? author.knowsAbout : undefined,
      url,
    },
    about: posts?.length
      ? {
        '@type': 'ItemList',
        itemListElement: posts.map((p, i) => ({
          '@type': 'ListItem',
          position: i + 1,
          url: `${SITE_URL}/blog/${p.slug}`,
          name: p.title,
        })),
      }
      : undefined,
  };
}

export function articleSchema(params: {
  headline: string;
  description: string;
  image?: string;
  datePublished: string;
  dateModified?: string;
  author: string;
  url?: string;
}) {
  return {
    '@context': 'https://schema.org',
    '@type': 'Article',
    headline: params.headline,
    description: params.description,
    image: params.image,
    datePublished: params.datePublished,
    dateModified: params.dateModified || params.datePublished,
    author: {
      '@type': 'Organization',
      name: params.author,
    },
    publisher: {
      '@type': 'Organization',
      name: 'QR Master',
      url: SITE_URL,
      logo: {
        '@type': 'ImageObject',
        url: `${SITE_URL}/static/og-image.png`,
      },
    },
    url: params.url,
  };
}

export function reviewSchema(testimonial: Testimonial) {
  return {
    '@context': 'https://schema.org',
    '@type': 'Review',
    itemReviewed: {
      '@type': 'SoftwareApplication',
      name: 'QR Master',
      description: 'Professional QR code generator with dynamic QR codes, analytics, and customization.',
      image: `${SITE_URL}/static/og-image.png`,
      applicationCategory: 'BusinessApplication',
      operatingSystem: 'Web Browser',
      offers: {
        '@type': 'Offer',
        price: '0',
        priceCurrency: 'EUR',
        availability: 'https://schema.org/InStock',
        priceValidUntil: '2026-12-31'
      }
    },
    reviewRating: {
      '@type': 'Rating',
      ratingValue: testimonial.rating,
      bestRating: 5,
      worstRating: 1
    },
    author: {
      '@type': 'Person',
      name: testimonial.author.name
    },
    datePublished: testimonial.datePublished,
    reviewBody: testimonial.content,
    headline: testimonial.title
  };
}

export function aggregateRatingSchema(aggregateRating: AggregateRating) {
  return {
    '@context': 'https://schema.org',
    '@type': 'SoftwareApplication',
    name: 'QR Master',
    description: 'Professional QR code generator with dynamic QR codes, analytics, and customization.',
    image: `${SITE_URL}/static/og-image.png`,
    applicationCategory: 'BusinessApplication',
    operatingSystem: 'Web Browser',
    url: SITE_URL,
    offers: {
      '@type': 'Offer',
      price: '0',
      priceCurrency: 'EUR',
      availability: 'https://schema.org/InStock',
      priceValidUntil: '2026-12-31'
    },
    aggregateRating: {
      '@type': 'AggregateRating',
      ratingValue: aggregateRating.ratingValue,
      reviewCount: aggregateRating.reviewCount,
      bestRating: aggregateRating.bestRating,
      worstRating: aggregateRating.worstRating
    }
  };
}

export interface NewsArticleParams {
  headline: string;
  datePublished: string;
  description: string;
  url?: string;
}

export function newsArticleSchema(params: NewsArticleParams) {
  return {
    '@context': 'https://schema.org',
    '@type': 'NewsArticle',
    headline: params.headline,
    datePublished: params.datePublished,
    description: params.description,
    url: params.url || SITE_URL,
    author: {
      '@type': 'Organization',
      name: 'QR Master',
      '@id': `${SITE_URL}/#organization`,
    },
    publisher: {
      '@type': 'Organization',
      name: 'QR Master',
      '@id': `${SITE_URL}/#organization`,
      logo: {
        '@type': 'ImageObject',
        url: `${SITE_URL}/static/og-image.png`,
        width: 1200,
        height: 630,
      },
    },
    mainEntityOfPage: {
      '@type': 'WebPage',
      '@id': params.url || SITE_URL,
    },
  };
}