import test from 'node:test'
import assert from 'node:assert/strict'
import { allocateWarehouseTransfer } from './warehouse-transfer-allocation.mjs'

// 用独立来源快照验证隔离、幂等与未知结果停写，不访问测试环境。
function fixture(fault = '') {
  const proof = { marker: 'batch', customerId: '101', warehouseId: '201', transferNo: 'WT-1', inboundCode: 'IN-1', skuCode: 'SKU-1', status: 'APPROVED' }
  const calls = [], snapshots = []
  const allocation = { inventoryPositionId: '301', inboundOrderId: '401', inboundCode: 'IN-1', palletId: '501', palletNo: 'P-1', packageCount: 1 }
  const allocated = { transferNo: 'WT-1', status: 'WAIT_RELABEL', relabelNo: 'RL-1', relabelApplicationId: '601', allocations: [allocation] }
  const context = { marker: 'batch', context: { merchantQualificationFixture: { tenantId: '101' } },
    createdResources: { phase4OverseasClientServices: { transferFulfillment: proof } },
    assert() {}, apiSuccess() {},
    async request(method, path, body, token) {
      calls.push({ method, path, body: structuredClone(body), token })
      let data
      if (method === 'POST') {
        if (fault === 'network') throw Error('connection closed')
        if (fault === 'server') return { http: 503, body: { code: '503' }, requestId: 'request-1' }
        data = structuredClone(allocated)
        if (fault === 'wrong allocation') data.allocations[0].inboundOrderId = '999'
        if (fault === 'replay' && calls.filter(c => c.method === 'POST').length === 2) data.relabelNo = 'RL-2'
      } else if (path.includes('inventory-candidates')) {
        data = [{ inventoryBalanceId: '701', inboundOrderId: '401', inboundCode: 'IN-1', overseasWarehouseId: '201', skuCode: 'SKU-1', positions: [{ positionId: '301', palletNo: 'P-1', availablePackages: 1 }] }]
        if (fault === 'old stock') data[0].inboundCode = 'IN-OLD'
      } else if (path.includes('/positions')) {
        data = [{ id: '301', balanceId: '701', customerId: '101', overseasWarehouseId: '201', inboundOrderId: '401', inboundCode: 'IN-1', palletId: '501', palletNo: 'P-1', availablePackages: 1 }]
        if (fault === 'foreign customer') data[0].customerId = '999'
        if (fault === 'foreign inbound') data[0].inboundOrderId = '999'
        if (fault === 'no stock') data[0].availablePackages = 0
      } else if (path.startsWith('/api/merchant')) {
        data = structuredClone(allocated)
        if (fault === 'merchant drift') data.relabelApplicationId = '999'
      } else data = { transferNo: 'WT-1', status: 'APPROVED', operatingWarehouseId: '201', needRelabel: true, packageCount: 1, allocations: [], sourceOrders: [{ inboundOrderId: '401', inboundCode: 'IN-1' }] }
      return { http: 200, body: { code: '200', data } }
    } }
  const checkpoint = async () => { snapshots.push(structuredClone(proof)); if (fault === 'disk') throw Error('disk unavailable') }
  return { proof, context, calls, snapshots, options: { proof, merchantToken: 'secret-token', checkpoint } }
}

test('原转运分配同批库存、重放并由客户回查唯一换标申请', async () => {
  const f = fixture()
  await allocateWarehouseTransfer(f.context, f.options)
  assert.equal(f.proof.status, 'WAIT_RELABEL')
  assert.equal(f.proof.allocation.status, 'ALLOCATED_WAIT_RELABEL')
  assert.equal(f.proof.sourcePositionId, '301')
  const writes = f.calls.filter(c => c.method === 'POST')
  assert.equal(writes.length, 2)
  assert.deepEqual(writes[0].body, writes[1].body)
  assert.equal(writes[0].body.allocations[0].packageCount, 1)
  assert.equal(f.snapshots[0].allocation.requests[0].status, 'PREPARED')
  assert.equal(JSON.stringify(f.snapshots).includes('secret-token'), false)
  await assert.rejects(allocateWarehouseTransfer(f.context, f.options), /或已执行/)
  assert.equal(f.calls.length, 6)
})

for (const fault of ['old stock', 'foreign customer', 'foreign inbound', 'no stock', 'network', 'server', 'wrong allocation', 'replay', 'merchant drift', 'disk']) {
  test(`转运分配遇到 ${fault} 停止且保留证据`, async () => {
    const f = fixture(fault)
    await assert.rejects(allocateWarehouseTransfer(f.context, f.options))
    assert.equal(f.proof.allocation.status, 'FAILED')
    const writes = f.calls.filter(c => c.method === 'POST')
    assert.equal(writes.length, ['replay', 'merchant drift'].includes(fault) ? 2 : ['network', 'server', 'wrong allocation'].includes(fault) ? 1 : 0)
    if (['network', 'server'].includes(fault)) assert.equal(f.proof.allocation.requests.at(-1).status, 'UNKNOWN_RESULT')
    if (fault === 'disk') assert.equal(f.calls.length, 0)
  })
}

test('未登记的同形证明不得触发请求', async () => {
  const f = fixture()
  f.options.proof = structuredClone(f.proof)
  await assert.rejects(allocateWarehouseTransfer(f.context, f.options))
  assert.equal(f.calls.length, 0)
})