import { z } from "zod";

const gallerySchema = z.array(
  z.object({
    filename: z.string(),
    url: z.string(),
    width: z.number(),
    height: z.number(),
    exif: z.object({
      date: z.coerce.date(),
      camera: z.string(),
      lens: z.string(),
      settings: z.object({
        aperture: z.string(),
        shutter: z.string(),
        iso: z.string(),
        focalLength: z.string(),
      }),
    }),
  }),
).nonempty();

const projectSchema = z.array(
  z.object({
    order: z.number(),
    scope: z.enum(["hobby", "work"]),
    title: z.string(),
    link: z.string().url(),
    technologies: z.array(z.string()),
    en: z.object({
      description: z.string(),
      summary: z.string(),
      tasks: z.array(z.string()),
    }),
    fr: z.object({
      description: z.string(),
      summary: z.string(),
      tasks: z.array(z.string()),
    }),
  }),
).nonempty();

export default defineEventHandler(async (event) => {
  const checks: Record<string, { ok: boolean; error?: string }> = {};
  const baseURL = `http://localhost:${process.env.PORT ?? 3000}`;

  try {
    const raw = await $fetch("/api/gallery", { baseURL });
    const result = gallerySchema.safeParse(raw);
    checks.gallery = {
      ok: result.success,
      error: result.success ? undefined : result.error.message,
    };
  } catch (err) {
    checks.gallery = { ok: false, error: String(err) };
  }

  try {
    const html = await $fetch<string>("/gallery", { baseURL });
    checks.galleryPage = {
      ok: html.includes("</html>"),
      error: html.includes("</html>") ? undefined : "response is not valid HTML",
    };
  } catch (err) {
    checks.galleryPage = { ok: false, error: String(err) };
  }

  try {
    const items = await queryCollection(event, "projects").all();
    const result = projectSchema.safeParse(items);
    checks.projects = {
      ok: result.success,
      error: result.success ? undefined : result.error.message,
    };
  } catch (err) {
    checks.projects = { ok: false, error: String(err) };
  }

  const allOk = Object.values(checks).every((c) => c.ok);

  if (!allOk) {
    throw createError({
      statusCode: 503,
      data: { status: "unhealthy", checks },
    });
  }

  return { status: "ok", checks };
});