feat: artifact section

src/lib/assets.ts

@@ -1,5 +1,5 @@
 import { readdirSync } from "node:fs";
-import { mkdir, readdir } from "node:fs/promises";
+import { mkdir, readdir, rm } from "node:fs/promises";
 import { join } from "node:path";
 import { file, hash, write } from "bun";
 import { TTLCache } from "enka.ts";
@@ -14,14 +14,13 @@ export class AssetManager {
   private MAX = 300;
   private approximateSize = 0;
 
-  async getMissingAssets() {
-    const avatars = await getEnkaAvatarStore();
-    const weapons = await getEnkaWeaponStore();
-    const relics = await getEnkaRelicStore();
-    await mkdir("store").catch(() => {});
-    const existing = new Set(await readdir("store"));
-    const missing = new Set<string>();
-    [
+  private async getAssetList() {
+    const [avatars, weapons, relics] = await Promise.all([
+      getEnkaAvatarStore(),
+      getEnkaWeaponStore(),
+      await getEnkaRelicStore(),
+    ]);
+    return [
       ...Object.values(avatars).flatMap((a) => [
         ...a.Consts,
         ...Object.values(a.Skills),
@@ -30,7 +29,16 @@ export class AssetManager {
       ]),
       ...Object.values(weapons).flatMap((w) => [w.Icon, w.AwakenIcon]),
       ...Object.values(relics.Items).map((r) => r.Icon),
-    ].map((n) => existing.has(hash(n).toString(36)) || missing.add(n));
+    ];
+  }
+
+  async getMissingAssets() {
+    await mkdir("store").catch(() => {});
+    const existing = new Set(await readdir("store"));
+    const missing = new Set<string>();
+    (await this.getAssetList()).map(
+      (n) => existing.has(hash(n).toString(36)) || missing.add(n),
+    );
 
     console.log(
       `${missing.size} assets missing, ${existing.size} assets in store`,
@@ -50,6 +58,20 @@ export class AssetManager {
         .then((d) => write(join("store", hash(name).toString(36)), d));
 
     console.log("All missing assets fetched and stored");
+    this.purgeExtraAssets();
+  }
+
+  async purgeExtraAssets() {
+    const extra = new Set(await readdir("store"));
+    (await this.getAssetList()).map((n) => extra.delete(hash(n).toString(36)));
+    if (!extra.size) return;
+    console.log(
+      `Clearing extra assets\n${[...extra.values()]
+        .map((e) => `- ${e}`)
+        .join("\n")}`,
+    );
+    // biome-ignore lint/suspicious/useIterableCallbackReturn: there's no map
+    extra.forEach((f) => rm(join("store", f)));
   }
 
   async load(path: string) {