import { prisma } from "@/lib/prisma";
import ProjectDetailClient from "@/app/_ui/ProjectDetailClient";
import { notFound } from "next/navigation";
import type { Metadata } from "next";
import { getLanguageAlternates, toAbsoluteUrl } from "@/lib/seo";
import { getProjectBySlug } from "@/lib/directus";
import { ProjectDetailData } from "@/app/_ui/ProjectDetailClient";

export const revalidate = 300;

export async function generateMetadata({
  params,
}: {
  params: Promise<{ locale: string; slug: string }>;
}): Promise<Metadata> {
  const { locale, slug } = await params;
  
  // Try Directus first for metadata
  const directusProject = await getProjectBySlug(slug, locale);
  if (directusProject) {
    return {
      title: directusProject.title,
      description: directusProject.description,
      alternates: {
        canonical: toAbsoluteUrl(`/${locale}/projects/${slug}`),
        languages: getLanguageAlternates({ pathWithoutLocale: `projects/${slug}` }),
      },
    };
  }

  const languages = getLanguageAlternates({ pathWithoutLocale: `projects/${slug}` });
  return {
    alternates: {
      canonical: toAbsoluteUrl(`/${locale}/projects/${slug}`),
      languages,
    },
  };
}

export default async function ProjectPage({
  params,
}: {
  params: Promise<{ locale: string; slug: string }>;
}) {
  const { locale, slug } = await params;

  // Try PostgreSQL first
  const dbProject = await prisma.project.findFirst({
    where: { slug, published: true },
    include: {
      translations: {
        select: { title: true, description: true, content: true, locale: true },
      },
    },
  });

  let projectData: ProjectDetailData | null = null;

  if (dbProject) {
    const trPreferred = dbProject.translations?.find((t) => t.locale === locale && (t?.title || t?.description));
    const trDefault = dbProject.translations?.find(
      (t) => t.locale === dbProject.defaultLocale && (t?.title || t?.description),
    );
    const tr = trPreferred ?? trDefault;
    const { translations: _translations, ...rest } = dbProject;
    const localizedContent = (() => {
      if (typeof tr?.content === "string") return tr.content;
      if (tr?.content && typeof tr.content === "object" && "markdown" in tr.content) {
        const markdown = (tr.content as Record<string, unknown>).markdown;
        if (typeof markdown === "string") return markdown;
      }
      return dbProject.content;
    })();
    projectData = {
      ...rest,
      title: tr?.title ?? dbProject.title,
      description: tr?.description ?? dbProject.description,
      content: localizedContent,
    } as ProjectDetailData;
  } else {
    // Try Directus fallback
    const directusProject = await getProjectBySlug(slug, locale);
    if (directusProject) {
      projectData = {
        ...directusProject,
        id: typeof directusProject.id === 'string' ? (parseInt(directusProject.id) || 0) : directusProject.id,
      } as ProjectDetailData;
    }
  }

  if (!projectData) return notFound();

  const jsonLd = {
    "@context": "https://schema.org",
    "@type": "SoftwareSourceCode",
    "name": projectData.title,
    "description": projectData.description,
    "codeRepository": projectData.github_url || projectData.github,
    "programmingLanguage": projectData.technologies,
    "author": {
      "@type": "Person",
      "name": "Dennis Konkol"
    },
    "dateCreated": projectData.date || projectData.created_at,
    "url": toAbsoluteUrl(`/${locale}/projects/${slug}`),
    "image": (projectData.imageUrl || projectData.image_url) ? toAbsoluteUrl((projectData.imageUrl || projectData.image_url)!) : undefined,
  };

  return (
    <>
      <script
        type="application/ld+json"
        dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
      />
      <ProjectDetailClient project={projectData} locale={locale} />
    </>
  );
}