import { describe, expect, it } from 'vitest'
import type { KbxConflictSnapshot, KbxOperationRun, KbxRuntimeNotice } from '@kbx/contracts'

describe('KBX runtime contract', () => {
  it('distinguishes degraded mode from normal business state', () => {
    const notice: KbxRuntimeNotice = { mode: 'degraded', title: '택배 연계 지연', retryAllowed: true }
    expect(notice.mode).toBe('degraded')
  })

  it('keeps concurrency conflict explicit instead of silent overwrite', () => {
    const conflict: KbxConflictSnapshot = {
      code: 'ORDER_VERSION_CONFLICT', title: '다른 사용자가 변경했습니다.', requestedVersion: 3, currentVersion: 4,
      changes: [{ field: 'quantity', label: '수량', mine: 10, latest: 8 }],
    }
    expect(conflict.currentVersion).toBeGreaterThan(conflict.requestedVersion!)
  })

  it('can represent partial completion without reporting full success', () => {
    const run: KbxOperationRun = {
      id: 'op-1', type: 'bulk-ship', title: '대량 출고지시', status: 'partially-completed', requestedAt: new Date().toISOString(),
      total: 100, processed: 100, succeeded: 97, failed: 3,
    }
    expect(run.status).toBe('partially-completed')
    expect(run.failed).toBe(3)
  })
})