feat: 添加获取画廊缩略图信息的API

routes/api/gallery/thumbnail/[gids].ts

@@ -0,0 +1,41 @@
+import { Handlers } from "$fresh/server.ts";
+import { get_task_manager } from "../../../../server.ts";
+import {
+    gen_data,
+    gen_error,
+    JSONResult,
+    return_data,
+    return_error,
+} from "../../../../server/utils.ts";
+import { ExtendedPMeta, User, UserPermission } from "../../../../db.ts";
+import { isNumNaN, parseBigInt } from "../../../../utils.ts";
+
+
+export const handler: Handlers = {
+    GET(_req, ctx) {
+        const u = <User | undefined> ctx.state.user;
+        if (
+            u && !u.is_admin &&
+            !(Number(u.permissions) & UserPermission.ReadGallery)
+        ) {
+            return return_error(403, "Permission denied.");
+        }
+        const gid = decodeURIComponent(ctx.params.gids);
+        const gids = new Set(
+            gid.split(",").map((v) => parseBigInt(v)).filter((v) =>
+                !isNumNaN(v)
+            ).map((v) => BigInt(v)),
+        );
+        const m = get_task_manager();
+        const re: Record<string, JSONResult<ExtendedPMeta>> = {};
+        for (const gid of gids) {
+            const page = m.db.get_first_extended_pmeta(gid);
+            if (page) {
+                re[gid.toString()] = gen_data(page);
+            } else {
+                re[gid.toString()] = gen_error(404, "Not found");
+            }
+        }
+        return return_data(re);
+    },
+};