Initial commit

apps/web/app/api/assets/[id]/url/route.ts

@@ -0,0 +1,94 @@
+import { z } from "zod";
+
+import { getDb } from "@tline/db";
+import { presignGetObjectUrl } from "@tline/minio";
+
+export const runtime = "nodejs";
+
+const paramsSchema = z.object({
+  id: z.string().uuid()
+});
+
+const variantSchema = z.enum(["original", "thumb_small", "thumb_med", "poster"]);
+
+export async function GET(
+  request: Request,
+  context: { params: Promise<{ id: string }> }
+): Promise<Response> {
+  const rawParams = await context.params;
+  const paramsParsed = paramsSchema.safeParse(rawParams);
+  if (!paramsParsed.success) {
+    return Response.json(
+      { error: "invalid_params", issues: paramsParsed.error.issues },
+      { status: 400 },
+    );
+  }
+  const params = paramsParsed.data;
+
+  const url = new URL(request.url);
+  const variantParsed = variantSchema.safeParse(url.searchParams.get("variant") ?? "original");
+  if (!variantParsed.success) {
+    return Response.json(
+      { error: "invalid_query", issues: variantParsed.error.issues },
+      { status: 400 },
+    );
+  }
+  const variant = variantParsed.data;
+
+  const db = getDb();
+  const rows = await db<
+    {
+      bucket: string;
+      active_key: string;
+      thumb_small_key: string | null;
+      thumb_med_key: string | null;
+      poster_key: string | null;
+      mime_type: string;
+    }[]
+  >`
+    select bucket, active_key, thumb_small_key, thumb_med_key, poster_key, mime_type
+    from assets
+    where id = ${params.id}
+    limit 1
+  `;
+
+  const asset = rows[0];
+  if (!asset) {
+    return Response.json({ error: "not_found" }, { status: 404 });
+  }
+
+  const key =
+    variant === "original"
+      ? asset.active_key
+      : variant === "thumb_small"
+        ? asset.thumb_small_key
+        : variant === "thumb_med"
+          ? asset.thumb_med_key
+          : asset.poster_key;
+
+  if (!key) {
+    return Response.json(
+      { error: "variant_not_available", variant },
+      { status: 404 }
+    );
+  }
+
+  // Hint the browser; especially helpful for Range playback.
+  const responseContentType = variant === "original" ? asset.mime_type : "image/jpeg";
+
+  const responseContentDisposition =
+    variant === "original" && asset.mime_type.startsWith("video/") ? "inline" : undefined;
+
+  const signed = await presignGetObjectUrl({
+    bucket: asset.bucket,
+    key,
+    responseContentType,
+    responseContentDisposition,
+  });
+
+  return Response.json(signed, {
+    headers: {
+      "Cache-Control": "no-store"
+    }
+  });
+}