refactor: migrate system metadata to kysely (#15231)

server/src/queries/system.metadata.repository.sql

@@ -0,0 +1,24 @@
+-- NOTE: This file is auto generated by ./sql-generator
+
+-- SystemMetadataRepository.get
+select
+  "value"
+from
+  "system_metadata"
+where
+  "key" = $1
+
+-- SystemMetadataRepository.set
+insert into
+  "system_metadata" ("key", "value")
+values
+  ($1, $2)
+on conflict ("key") do
+update
+set
+  "value" = $3
+
+-- SystemMetadataRepository.delete
+delete from "system_metadata"
+where
+  "key" = $1

server/src/repositories/system-metadata.repository.ts

@@ -1,31 +1,44 @@
 import { Injectable } from '@nestjs/common';
-import { InjectRepository } from '@nestjs/typeorm';
+import { Insertable, Kysely } from 'kysely';
+import { InjectKysely } from 'nestjs-kysely';
 import { readFile } from 'node:fs/promises';
-import { SystemMetadata, SystemMetadataEntity } from 'src/entities/system-metadata.entity';
+import { DB, SystemMetadata as DbSystemMetadata } from 'src/db';
+import { GenerateSql } from 'src/decorators';
+import { SystemMetadata } from 'src/entities/system-metadata.entity';
 import { ISystemMetadataRepository } from 'src/interfaces/system-metadata.interface';
-import { Repository } from 'typeorm';
+
+type Upsert = Insertable<DbSystemMetadata>;
 
 @Injectable()
 export class SystemMetadataRepository implements ISystemMetadataRepository {
-  constructor(
-    @InjectRepository(SystemMetadataEntity)
-    private repository: Repository<SystemMetadataEntity>,
-  ) {}
+  constructor(@InjectKysely() private db: Kysely<DB>) {}
 
+  @GenerateSql({ params: ['metadata_key'] })
   async get<T extends keyof SystemMetadata>(key: T): Promise<SystemMetadata[T] | null> {
-    const metadata = await this.repository.findOne({ where: { key } });
+    const metadata = await this.db
+      .selectFrom('system_metadata')
+      .select('value')
+      .where('key', '=', key)
+      .executeTakeFirst();
+
     if (!metadata) {
       return null;
     }
     return metadata.value as SystemMetadata[T];
   }
 
+  @GenerateSql({ params: ['metadata_key', { foo: 'bar' }] })
   async set<T extends keyof SystemMetadata>(key: T, value: SystemMetadata[T]): Promise<void> {
-    await this.repository.upsert({ key, value }, { conflictPaths: { key: true } });
+    await this.db
+      .insertInto('system_metadata')
+      .values({ key, value } as Upsert)
+      .onConflict((oc) => oc.columns(['key']).doUpdateSet({ value } as Upsert))
+      .execute();
   }
 
+  @GenerateSql({ params: ['metadata_key'] })
   async delete<T extends keyof SystemMetadata>(key: T): Promise<void> {
-    await this.repository.delete({ key });
+    await this.db.deleteFrom('system_metadata').where('key', '=', key).execute();
   }
 
   readFile(filename: string): Promise<string> {