import type { Metadata } from "next";
import {
  type CaseStudyContent,
  isClientCase,
  type ServicePageContent,
  siteName,
  siteUrl,
} from "./site-content";

export const twitterHandle = "@evandrodevbr";

export const SEO_IDS = {
  website: `${siteUrl}/#website`,
  person: `${siteUrl}/#person`,
  profilePage: `${siteUrl}/curriculo#profile-page`,
} as const;

export function buildWebSiteJsonLd() {
  return {
    "@type": "WebSite",
    "@id": SEO_IDS.website,
    url: siteUrl,
    name: siteName,
    inLanguage: "pt-BR",
    publisher: { "@id": SEO_IDS.person },
  } as const;
}

export function buildPersonJsonLd() {
  return {
    "@type": "Person",
    "@id": SEO_IDS.person,
    name: "Evandro Fonseca Junior",
    url: siteUrl,
    image: `${siteUrl}/edev.jpg`,
    // cargo e áreas vêm de public/portfolio-data.json e estão visíveis em /curriculo e na seção de skills
    jobTitle: "Engenheiro da Computação e Desenvolvedor de Software",
    knowsAbout: [
      "Next.js",
      "React",
      "TypeScript",
      "Node.js",
      "Python",
      "IoT",
      "Computação em nuvem",
      "Inteligência artificial",
    ],
    homeLocation: {
      "@type": "Place",
      name: "Garuva, Santa Catarina, Brasil",
    },
    sameAs: ["https://www.linkedin.com/in/evandrodevbr/"],
  } as const;
}

export function buildProfilePageJsonLd() {
  return {
    "@type": "ProfilePage",
    "@id": SEO_IDS.profilePage,
    url: `${siteUrl}/curriculo`,
    inLanguage: "pt-BR",
    isPartOf: { "@id": SEO_IDS.website },
    mainEntity: { "@id": SEO_IDS.person },
  } as const;
}

export function buildServiceJsonLd(service: ServicePageContent) {
  const pageUrl = `${siteUrl}/servicos/${service.slug}`;

  return {
    "@type": "Service",
    "@id": `${pageUrl}#service`,
    url: pageUrl,
    name: service.navLabel,
    description: service.metaDescription,
    provider: { "@id": SEO_IDS.person },
    areaServed: [
      { "@type": "City", name: "Garuva" },
      {
        "@type": "AdministrativeArea",
        name: "Norte de Santa Catarina",
      },
    ],
  } as const;
}

/** Imagem de compartilhamento do case: a mesma que as redes recebem em `og:image` (rota opengraph-image do case). */
export function getCaseImageUrl(id: string) {
  return `${siteUrl}/cases/${id}/opengraph-image/${id}`;
}

/** Trabalho do case como `CreativeWork`: autor ligado à pessoa e, nos projetos de cliente, o cliente em nome de quem foi feito. */
export function buildCaseJsonLd(caseStudy: CaseStudyContent) {
  const pageUrl = `${siteUrl}/cases/${caseStudy.id}`;

  return {
    "@type": "CreativeWork",
    "@id": `${pageUrl}#creative-work`,
    name: `${caseStudy.title}: ${caseStudy.subtitle}`,
    description: caseStudy.metaDescription,
    url: pageUrl,
    image: getCaseImageUrl(caseStudy.id),
    inLanguage: "pt-BR",
    creator: { "@id": SEO_IDS.person },
    ...(isClientCase(caseStudy)
      ? {
          sourceOrganization: {
            "@type": "Organization",
            name: caseStudy.title,
            ...(caseStudy.demoUrl ? { url: caseStudy.demoUrl } : {}),
          },
        }
      : {}),
    keywords: caseStudy.stack.join(", "),
  };
}

export function buildBreadcrumbList(
  pageUrl: string,
  items: readonly (readonly [name: string, url: string])[],
) {
  return {
    "@type": "BreadcrumbList",
    "@id": `${pageUrl}#breadcrumb`,
    itemListElement: items.map(([name, item], index) => ({
      "@type": "ListItem" as const,
      position: index + 1,
      name,
      item,
    })),
  } as const;
}

/**
 * Canonical, Open Graph e Twitter de uma página. Quem define `openGraph` ou `twitter` numa página substitui o do layout inteiro,
 * então o cartão precisa vir completo daqui; a imagem vem do `opengraph-image` da própria rota.
 */
export function buildPageSocialMetadata({
  url,
  title,
  description,
  type,
}: {
  url: string;
  title: string;
  description: string;
  type: "website" | "article" | "profile";
}): Pick<Metadata, "alternates" | "openGraph" | "twitter"> {
  return {
    alternates: { canonical: url },
    openGraph: {
      locale: "pt_BR",
      title,
      description,
      url,
      siteName,
      type,
    },
    twitter: {
      card: "summary_large_image",
      title,
      description,
      creator: twitterHandle,
    },
  };
}