import { prisma } from "@/lib/prisma";
import type { Prisma } from "@prisma/client";
import { PrismaClientKnownRequestError } from "@prisma/client/runtime/library";

export async function getSiteSettings() {
  return prisma.siteSettings.findUnique({ where: { id: 1 } });
}

export async function getContentByKey(opts: { key: string; locale: string }) {
  const { key, locale } = opts;
  try {
    const page = await prisma.contentPage.findUnique({
      where: { key },
      include: {
        translations: {
          where: { locale },
          take: 1,
        },
      },
    });

    if (page?.translations?.[0]) return page.translations[0];

    const settings = await getSiteSettings();
    const fallbackLocale = settings?.defaultLocale || "en";

    const fallback = await prisma.contentPageTranslation.findFirst({
      where: {
        page: { key },
        locale: fallbackLocale,
      },
    });

    return fallback;
  } catch (error) {
    // If migrations haven't been applied yet, don't crash the app.
    // Let callers fall back to static translations.
    if (error instanceof PrismaClientKnownRequestError && (error.code === "P2021" || error.code === "P2022")) {
      return null;
    }
    throw error;
  }
}

export async function upsertContentByKey(opts: {
  key: string;
  locale: string;
  title?: string | null;
  slug?: string | null;
  content: unknown;
  metaDescription?: string | null;
  keywords?: string | null;
}) {
  const { key, locale, title, slug, content, metaDescription, keywords } = opts;

  const page = await prisma.contentPage.upsert({
    where: { key },
    create: { key, status: "PUBLISHED" },
    update: {},
  });

  return prisma.contentPageTranslation.upsert({
    where: { pageId_locale: { pageId: page.id, locale } },
    create: {
      pageId: page.id,
      locale,
      title: title ?? undefined,
      slug: slug ?? undefined,
      content: content as Prisma.InputJsonValue, // JSON
      metaDescription: metaDescription ?? undefined,
      keywords: keywords ?? undefined,
    },
    update: {
      title: title ?? undefined,
      slug: slug ?? undefined,
      content: content as Prisma.InputJsonValue, // JSON
      metaDescription: metaDescription ?? undefined,
      keywords: keywords ?? undefined,
    },
  });
}