snapshot of https://github.com/toeverything/AFFiNE.git (canary, 2026-09-16; blobs > 131072B omitted)

packages/backend/server/src/base/config/factory.ts

@@ -0,0 +1,73 @@
+import { Inject, Injectable, Optional } from '@nestjs/common';
+
+import { InvalidAppConfig } from '../error';
+import { APP_CONFIG_DESCRIPTORS, getDefaultConfig, override } from './register';
+
+export const OVERRIDE_CONFIG_TOKEN = Symbol('OVERRIDE_CONFIG_TOKEN');
+
+@Injectable()
+export class ConfigFactory {
+  readonly #original: AppConfig;
+  readonly #config: AppConfig;
+  get config() {
+    return this.#config;
+  }
+
+  constructor(
+    @Inject(OVERRIDE_CONFIG_TOKEN)
+    @Optional()
+    private readonly overrides: DeepPartial<AppConfig> = {}
+  ) {
+    this.#original = this.loadDefault();
+    this.#config = structuredClone(this.#original);
+  }
+
+  clone() {
+    // we did not freeze the #config object, it might be modified
+    return structuredClone(this.#original);
+  }
+
+  override(updates: DeepPartial<AppConfig>) {
+    override(this.#original, updates);
+    override(this.#config, updates);
+  }
+
+  validate(updates: Array<{ module: string; key: string; value: any }>) {
+    const errors: InvalidAppConfig[] = [];
+
+    updates.forEach(update => {
+      const descriptor = APP_CONFIG_DESCRIPTORS[update.module]?.[update.key];
+      if (!descriptor) {
+        errors.push(
+          new InvalidAppConfig({
+            module: update.module,
+            key: update.key,
+            hint: `Unknown config [${update.key}]`,
+          })
+        );
+        return;
+      }
+
+      const { success, error } = descriptor.validate(update.value);
+      if (!success) {
+        error.issues.forEach(issue => {
+          errors.push(
+            new InvalidAppConfig({
+              module: update.module,
+              key: update.key,
+              hint: issue.message,
+            })
+          );
+        });
+      }
+    });
+
+    return errors.length > 0 ? errors : null;
+  }
+
+  private loadDefault() {
+    const config = getDefaultConfig();
+    override(config, this.overrides);
+    return config;
+  }
+}