import { db } from '../../db/db_index'
import { keyValStore } from '../../db/schema'
import { IConstantDbService, Constant, NewConstant } from '../../../../backend/src/trpc/apis/admin-apis/dataAccessors/interfaces/constant-db-service.interface'

export class ConstantDbService implements IConstantDbService {
  async getAllConstants(): Promise<Constant[]> {
    return db.select().from(keyValStore)
  }

  async upsertConstants(constants: { key: string; value: any }[]): Promise<number> {
    await db.transaction(async (tx) => {
      for (const { key, value } of constants) {
        await tx.insert(keyValStore)
          .values({ key, value })
          .onConflictDoUpdate({
            target: keyValStore.key,
            set: { value },
          })
      }
    })
    return constants.length
  }
}

export const constantDbService: IConstantDbService = new ConstantDbService()