zpan/server/adapters/repos/instance.ts

import { eq } from 'drizzle-orm'
import { generateId } from '../../../shared/ids'
import { systemOptions } from '../../db/schema'
import type { Database } from '../../platform/interface'
import type { InstanceRepo } from '../../usecases/ports'

const INSTANCE_ID_KEY = 'instance_id'

export function createInstanceRepo(db: Database): InstanceRepo {
  return {
    async getOrCreateInstanceId() {
      const rows = await db
        .select({ value: systemOptions.value })
        .from(systemOptions)
        .where(eq(systemOptions.key, INSTANCE_ID_KEY))
        .limit(1)
      if (rows[0]?.value) return rows[0].value

      const id = generateId()
      await db
        .insert(systemOptions)
        .values({ key: INSTANCE_ID_KEY, value: id })
        .onConflictDoUpdate({ target: systemOptions.key, set: { value: id } })
      return id
    },

    async getInstanceDisplayName() {
      const rows = await db
        .select({ value: systemOptions.value })
        .from(systemOptions)
        .where(eq(systemOptions.key, 'site_title'))
        .limit(1)
      return rows[0]?.value ?? 'ZPan'
    },
  }
}