feat: health check

Dockerfile

@@ -14,7 +14,10 @@ COPY . .
 RUN pnpm build
 
 FROM base AS runtime
+RUN apt-get update && apt-get install -y --no-install-recommends curl && rm -rf /var/lib/apt/lists/*
 WORKDIR /app
 COPY --from=build /app/.output ./.output
 EXPOSE 3000
+HEALTHCHECK --interval=30s --timeout=10s --start-period=15s --retries=3 \
+  CMD curl -sf http://localhost:3000/api/health || exit 1
 CMD ["node", ".output/server/index.mjs"]

server/api/health.get.ts

@@ -0,0 +1,89 @@
+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 };
+});