feat: cleanup

packages/core/src/blitz/catalogItemAccessor.ts

@@ -0,0 +1,28 @@
+import { CatalogItem } from '@protos/blitz_items';
+import { Any } from '@protos/google/protobuf/any';
+import { MessageFns } from '../protos';
+
+export class CatalogItemAccessor {
+  private components: Record<string, Any> = {};
+
+  constructor(item: CatalogItem) {
+    for (const component of item.components) {
+      if (
+        component.value === undefined ||
+        component.value.component === undefined
+      ) {
+        continue;
+      }
+
+      this.components[component.key] = component.value.component;
+    }
+  }
+
+  get<Type>(Message: MessageFns<Type>, component: string) {
+    if (component in this.components) {
+      return Message.decode(this.components[component].value);
+    }
+
+    throw new Error(`Unknown component: ${component}`);
+  }
+}

packages/core/src/blitz/index.ts

@@ -1,4 +1,5 @@
 export * from './canSplash';
+export * from './catalogItemAccessor';
 export * from './clans';
 export * from './classes';
 export * from './constants';
@@ -18,6 +19,7 @@ export * from './getTankStats';
 export * from './idToRegion';
 export * from './isOnGoingRatingSeason';
 export * from './isValidBlitzId';
+export * from './metadataAccessor';
 export * from './nations';
 export * from './normalizeExtra';
 export * from './normalizeIds';

packages/core/src/blitz/metadataAccessor.ts

@@ -0,0 +1,38 @@
+import { CatalogItem } from '@protos/blitz_items';
+import { Metadata } from '@protos/blitz_metadata';
+import { CatalogItemAccessor } from './catalogItemAccessor';
+
+export class UnpackedMetadataAccessor {
+  private items: Record<string, CatalogItemAccessor> = {};
+
+  constructor(metadata: Metadata) {
+    for (const item of metadata.catalog_items) {
+      if (item.catalog_id in this.items) {
+        throw new Error(`Duplicate catalog ID: ${item.catalog_id}`);
+      }
+
+      this.items[item.catalog_id] = new CatalogItemAccessor(item);
+    }
+  }
+
+  get(item: string) {
+    if (item in this.items) return this.items[item];
+
+    throw new Error(`Unknown catalog ID: ${item}`);
+  }
+}
+
+export class DiscreteMetadataAccessor {
+  constructor(private base: string) {}
+
+  async get(item: string) {
+    const response = await fetch(`${this.base}/${item}.pb`);
+
+    if (!response.ok) throw new Error(`Unknown catalog ID: ${item}`);
+
+    const buffer = await response.arrayBuffer();
+    const catalogItem = CatalogItem.decode(new Uint8Array(buffer));
+
+    return new CatalogItemAccessor(catalogItem);
+  }
+}