refactor(server): system config (#9517)

server/src/entities/system-metadata.entity.ts

@@ -1,20 +1,23 @@
-import { Column, Entity, PrimaryColumn } from 'typeorm';
+import { SystemConfig } from 'src/config';
+import { Column, DeepPartial, Entity, PrimaryColumn } from 'typeorm';
 
 @Entity('system_metadata')
-export class SystemMetadataEntity {
-  @PrimaryColumn()
-  key!: string;
+export class SystemMetadataEntity<T extends keyof SystemMetadata = SystemMetadataKey> {
+  @PrimaryColumn({ type: 'varchar' })
+  key!: T;
 
   @Column({ type: 'jsonb', default: '{}', transformer: { to: JSON.stringify, from: JSON.parse } })
-  value!: { [key: string]: unknown };
+  value!: SystemMetadata[T];
 }
 
 export enum SystemMetadataKey {
   REVERSE_GEOCODING_STATE = 'reverse-geocoding-state',
   ADMIN_ONBOARDING = 'admin-onboarding',
+  SYSTEM_CONFIG = 'system-config',
 }
 
-export interface SystemMetadata extends Record<SystemMetadataKey, { [key: string]: unknown }> {
+export interface SystemMetadata extends Record<SystemMetadataKey, Record<string, any>> {
   [SystemMetadataKey.REVERSE_GEOCODING_STATE]: { lastUpdate?: string; lastImportFileName?: string };
   [SystemMetadataKey.ADMIN_ONBOARDING]: { isOnboarded: boolean };
+  [SystemMetadataKey.SYSTEM_CONFIG]: DeepPartial<SystemConfig>;
 }