Add new route: api/gallery/[gid]

server/gallery.ts

@@ -0,0 +1,10 @@
+import { GMeta, PMeta, Tag } from "../db.ts";
+import { JSONResult } from "./utils.ts";
+
+export type GalleryData = {
+    meta: GMeta;
+    tags: Tag[];
+    pages: PMeta[];
+};
+
+export type GalleryResult = JSONResult<GalleryData>;

server/utils.ts

@@ -2,3 +2,35 @@ export function get_ws_host() {
     const protocol = document.location.protocol === "https:" ? "wss:" : "ws:";
     return `${protocol}//${document.location.host}`;
 }
+
+export type JSONResult<T> = {
+    ok: true;
+    status: 0;
+    data: T;
+} | {
+    ok: false;
+    status: Exclude<number, 0>;
+    error: string;
+};
+
+function gen_response<T>(d: JSONResult<T>) {
+    let status = 200;
+    if (d.status !== 0) {
+        status = (d.status >= 400 && d.status < 600) ? d.status : 400;
+    }
+    return new Response(JSON.stringify(d), {
+        status,
+        headers: { "Content-Type": "application/json" },
+    });
+}
+
+export function return_error<T = unknown>(
+    status: Exclude<number, 0>,
+    error: string,
+) {
+    return gen_response<T>({ ok: false, status, error });
+}
+
+export function return_data<T = unknown>(data: T) {
+    return gen_response<T>({ ok: true, status: 0, data });
+}