import test from 'node:test'
import assert from 'node:assert/strict'
import fs from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import { run } from './phase4-overseas-business.mjs'

const here = path.dirname(fileURLToPath(import.meta.url))
const source = fs.readFileSync(path.join(here, 'phase4-overseas-business.mjs'), 'utf8')
function response(data, code = '200') {
  return { http: 200, body: { code, message: code === '200' ? 'success' : 'conflict', data },
    requestId: `request-${code}`, traceId: `trace-${code}` }
}
function page(records = []) { return { records, page: 1, size: 20, total: records.length, pages: records.length ? 1 : 0 } }
function blankToNull(value) { return typeof value === 'string' && value.trim() === '' ? null : value }

function fixture(options = {}) {
  const calls = []; const steps = []; const gaps = []; const blockers = []
  const marker = 'HTTP-20260824-001'
  const state = {
    warehouseStatus: 'ACTIVE', purchase: null, purchaseHash: '', truck: null, truckHash: '', looseboard: null, looseboardHash: '',
    purchaseHistories: [], truckHistories: [], looseboardHistories: [],
    purchaseReviews: new Map(), truckReviews: new Map(), truckStatuses: new Map(), looseboardStatuses: new Map(),
  }
  const activeCustomers = options.activeCustomers ?? [{ id: '10001', tenantName: '客户甲', status: 'ACTIVE' }]
  const warehouseOptions = options.warehouseOptions ?? [
    { warehouseId: '20001', warehouseCode: 'LAX', warehouseName: '洛杉矶仓', countryCode: 'US' },
  ]
  const credentials = options.credentials === false ? {} : { username: 'merchant', password: 'secret' }

  function purchaseDetail() {
    return { summary: state.purchase, remark: state.purchase?.remark ?? null, histories: state.purchaseHistories }
  }
  function purchaseCustomer() { return { order: state.purchase, fees: [], progress: [], boxes: [], shipments: [], exceptionSummaries: [] } }
  function purchasePlatform() { return { customerView: purchaseCustomer(), internalRemark: state.purchase?.remark ?? null, reviewHistory: state.purchaseHistories } }
  function truckDetail() { return { summary: state.truck, remark: state.truck?.remark ?? null, histories: state.truckHistories } }
  function looseboardDetail() { return { summary: state.looseboard, remark: state.looseboard?.remark ?? null, histories: state.looseboardHistories } }

  const context = {
    marker, calls, steps, gaps, blockers,
    context: { merchantQualificationFixture: credentials },
    createdResources: { merchantQualificationFixture: { tenantId: '10001', marker } },
    async request(...args) {
 const route = /\/(?:last-leg|overseas-warehouse-resources)(?:\/|\?|$)/.test(String(args[1]));
 const handler = route ? async function(method,requestPath,body,token,headers) {
      calls.push({ channel: 'overseas', method, path: requestPath, body, tokenPresent: Boolean(token) })

      if (requestPath === '/api/merchant/v1/last-leg/overseas-procurements' && method === 'POST') {
        assert.equal(token, 'merchant-overseas-token')
        const hash = JSON.stringify(body)
        if (state.purchase) return hash === state.purchaseHash ? response(purchaseCustomer()) : response(null, 'A0409')
        state.purchaseHash = hash
        state.purchase = { id: '30001', orderNo: 'OP1', customerId: '10001', customerName: body.customerName,
          purchaseWarehouseId: null, purchaseWarehouseName: null, purchaseCategory: body.purchaseCategory,
          productName: body.productName, productSpecification: body.productSpecification, productUrl: body.productUrl,
          purchaseQuantity: body.purchaseQuantity,
          status: 'PENDING_REVIEW', version: 0, remark: body.remark }
        state.purchaseHistories.push({ operationType: 'CREATE', fromStatus: null, toStatus: 'PENDING_REVIEW', remark: marker })
        return response(purchaseCustomer())
      }
      if (requestPath.includes('/customer-options')) return response(state.purchase
        ? [{ customerId: '10001', customerName: '客户甲' }] : [])
      if (requestPath.includes('/warehouse-options')) return response(warehouseOptions)
      if (requestPath.includes('/overseas-procurements?') && method === 'GET') return response(page(state.purchase ? [state.purchase] : []))
      if (requestPath.includes('/overseas-procurements/OP1/review?') && method === 'POST') {
        assert.equal(Number.isInteger(Number(body.version)), true)
        assert.equal(typeof body.idempotencyKey === 'string' && body.idempotencyKey.length > 0, true)
        const hash = JSON.stringify(body)
        const replay = state.purchaseReviews.get(body.idempotencyKey)
        if (replay) return replay.hash === hash ? response(replay.result) : response(null, 'A0409')
        if (state.purchase.status !== 'PENDING_REVIEW') return response(null, 'A0409')
        if (Number(body.version) !== state.purchase.version) return response(null, 'A0409')
        const next = body.decision === 'REJECT' ? 'REJECTED' : 'WAIT_PURCHASE'
        state.purchase = { ...state.purchase, status: next, version: state.purchase.version + 1 }
        state.purchaseHistories.push({ operationType: 'REVIEW', fromStatus: 'PENDING_REVIEW', toStatus: next, remark: body.remark })
        const result = structuredClone(purchaseDetail())
        state.purchaseReviews.set(body.idempotencyKey, { hash, result })
        return response(result)
      }
      if (requestPath.includes('/overseas-procurements/OP1?') && method === 'GET') return response(purchasePlatform())
      if (requestPath.includes('/overseas-procurements/OP1?') && method === 'PATCH') {
        if (Number(body.version) !== state.purchase.version) return response(null, 'A0409')
        if (Object.keys(body).some(key => !['version', 'remark'].includes(key))) return response(null, 'A0400')
        if (!Object.hasOwn(body, 'remark') || blankToNull(body.remark) === state.purchase.remark) return response(purchaseDetail())
        state.purchase = { ...state.purchase, remark: blankToNull(body.remark), version: state.purchase.version + 1 }
        state.purchaseHistories.push({ operationType: 'UPDATE', fromStatus: state.purchase.status,
          toStatus: state.purchase.status, changeDetail: JSON.stringify({ marker }) })
        return response(purchaseDetail())
      }

      if (requestPath.includes('/us-truck-orders?') && method === 'POST') {
        const hash = JSON.stringify(body)
        if (state.truck) return hash === state.truckHash ? response(truckDetail()) : response(null, 'A0409')
        state.truckHash = hash
        state.truck = { id: '40001', orderNo: 'TK1', customerId: '10001', status: 'PENDING_REVIEW', version: 0, ...body }
        state.truckHistories.push({ fromStatus: null, toStatus: 'PENDING_REVIEW', remark: marker })
        return response(truckDetail())
      }
      if (requestPath.includes('/us-truck-orders?') && method === 'GET') return response(page(state.truck ? [state.truck] : []))
      if (requestPath.includes('/us-truck-orders/TK1/review?') && method === 'POST') {
        assert.equal(Number.isInteger(Number(body.version)), true)
        assert.equal(typeof body.idempotencyKey === 'string' && body.idempotencyKey.length > 0, true)
        const hash = JSON.stringify(body)
        const replay = state.truckReviews.get(body.idempotencyKey)
        if (replay) return replay.hash === hash ? response(replay.result) : response(null, 'A0409')
        if (state.truck.status !== 'PENDING_REVIEW' || Number(body.version) !== state.truck.version) {
          return response(null, 'A0409')
        }
        const next = body.decision === 'APPROVE' ? 'WAITING_INBOUND' : 'REJECTED'
        const from = state.truck.status
        state.truck = { ...state.truck, status: next, version: state.truck.version + 1 }
        state.truckHistories.push({ fromStatus: from, toStatus: next, remark: body.remark })
        const result = structuredClone(truckDetail())
        state.truckReviews.set(body.idempotencyKey, { hash, result })
        return response(result)
      }
      if (requestPath.includes('/us-truck-orders/TK1/status?') && method === 'PATCH') {
        assert.equal(body.status, 'CANCELLED')
        assert.equal(typeof body.idempotencyKey === 'string' && body.idempotencyKey.length > 0, true)
        const hash = JSON.stringify(body)
        const replay = state.truckStatuses.get(body.idempotencyKey)
        if (replay) return replay.hash === hash ? response(replay.result) : response(null, 'A0409')
        if (Number(body.version) !== state.truck.version) return response(null, 'A0409')
        if (!['PENDING_REVIEW', 'WAITING_INBOUND'].includes(state.truck.status)) return response(null, 'A0409')
        const from = state.truck.status
        state.truck = { ...state.truck, status: 'CANCELLED', version: state.truck.version + 1 }
        state.truckHistories.push({ fromStatus: from, toStatus: 'CANCELLED', remark: body.remark })
        const result = structuredClone(truckDetail())
        state.truckStatuses.set(body.idempotencyKey, { hash, result })
        return response(result)
      }
      if (requestPath.includes('/us-truck-orders/TK1?') && method === 'GET') return response(truckDetail())
      if (requestPath.includes('/us-truck-orders/TK1?') && method === 'PATCH') {
        if (Number(body.version) !== state.truck.version) return response(null, 'A0409')
        state.truck = { ...state.truck, ...body, version: state.truck.version + 1 }
        state.truckHistories.push({ fromStatus: state.truck.status, toStatus: state.truck.status, remark: marker })
        return response(truckDetail())
      }

      if (requestPath.includes('/local-looseboard-orders?') && method === 'POST') {
        const hash = JSON.stringify(body)
        if (state.looseboard) return hash === state.looseboardHash ? response(looseboardDetail()) : response(null, 'A0409')
        state.looseboardHash = hash
        state.looseboard = { id: '50001', orderNo: 'LB1', customerId: '10001', status: 'PENDING_ACCEPTANCE', version: 0, ...body }
        state.looseboardHistories.push({ operationType: 'CREATE', fromStatus: null, toStatus: 'PENDING_ACCEPTANCE', remark: marker })
        return response(looseboardDetail())
      }
      if (requestPath.includes('/local-looseboard-orders?') && method === 'GET') return response(page(state.looseboard ? [state.looseboard] : []))
      if (requestPath.includes('/local-looseboard-orders/LB1/status?') && method === 'PATCH') {
        assert.equal(typeof body.idempotencyKey === 'string' && body.idempotencyKey.length > 0, true)
        const hash = JSON.stringify(body)
        const replay = state.looseboardStatuses.get(body.idempotencyKey)
        if (replay) return replay.hash === hash ? response(replay.result) : response(null, 'A0409')
        if (Number(body.version) !== state.looseboard.version) return response(null, 'A0409')
        const allowed = state.looseboard.status === 'PENDING_ACCEPTANCE' && body.status === 'CANCELLED'
        if (!allowed) return response(null, 'A0409')
        const from = state.looseboard.status
        state.looseboard = { ...state.looseboard, status: body.status, version: state.looseboard.version + 1 }
        state.looseboardHistories.push({ operationType: 'STATUS', fromStatus: from, toStatus: body.status, remark: body.remark })
        const result = structuredClone(looseboardDetail())
        state.looseboardStatuses.set(body.idempotencyKey, { hash, result })
        return response(result)
      }
      if (requestPath.includes('/pending-looseboard-demands?') && method === 'GET') return response(page([state.looseboard]))
      if (requestPath.includes('/local-looseboard-orders/LB1?') && method === 'GET') return response(looseboardDetail())
      if (requestPath.includes('/local-looseboard-orders/LB1?') && method === 'PUT') {
        if (Number(body.version) !== state.looseboard.version) return response(null, 'A0409')
        state.looseboard = { ...state.looseboard, ...body, version: state.looseboard.version + 1 }
        state.looseboardHistories.push({ operationType: 'UPDATE', fromStatus: state.looseboard.status,
          toStatus: state.looseboard.status, changeDetail: JSON.stringify({ marker }) })
        return response(looseboardDetail())
      }
      throw new Error(`unexpected ${method} ${requestPath}`)
    } : async function(method,requestPath,body) {
      calls.push({ channel: 'domestic', method, path: requestPath, body })
      if (requestPath.includes('/iam/tenants?')) return response(page(activeCustomers))
      if (requestPath === '/api/auth/login') return response({ accessToken: 'merchant-overseas-token', refreshToken: 'merchant-refresh-token' })
      if (requestPath === '/api/auth/logout') { assert.equal(body.refreshToken, 'merchant-refresh-token'); return response(null) }
      if (method === 'POST' && requestPath === '/api/platform/v1/warehouse-admin') return response('20001')
      if (method === 'PATCH' && requestPath.includes('/warehouse-admin/20001/status?')) {
        state.warehouseStatus = 'INACTIVE'; return response(null)
      }
      throw new Error(`unexpected domestic ${method} ${requestPath}`)
    };
 return handler.apply(this,args);
 },

    apiSuccess(module, name, result, evidence, stepOptions) {
      const passed = result.http === 200 && String(result.body?.code) === '200'
      this.addStep(module, name, result, passed, evidence, stepOptions)
      return passed ? result.body.data : null
    },
    assert(module, name, result, passed, evidence, stepOptions) {
      this.addStep(module, name, result, Boolean(passed), evidence, stepOptions)
    },
    addStep(module, name, result, passed, evidence, stepOptions = {}) {
      const step = { module, name, passed: Boolean(passed), result, evidence, options: stepOptions,
        requestId: result?.requestId || null, traceId: result?.traceId || null }
      steps.push(step)
      if (stepOptions.deploymentBlocker && !step.passed) blockers.push(step)
    },
    addCoverageGap(...args) { gaps.push(args) },
  }
  return context
}

test('module is context injected, blocks missing prerequisites and excludes forbidden surfaces', () => {
  assert.match(source, /export async function run\(context\)/)
  assert.doesNotMatch(source, /https?:\/\/|process\.env|fetch\(/)
  assert.equal((source.match(/addCoverageGap\(/g) || []).length, 1)
  assert.match(source, /looseboard-pool-fulfillment/)
  assert.match(source, /deploymentBlocker: true/)
  assert.match(source, /contactPhone: '\d+'/)
  assert.doesNotMatch(source, /contactPhone: '\+[^']+'/)
  for (const forbidden of ['/outbounds', '/receive-pallets', '/outbound', '/delivery', '/dispatch', '/export']) {
    assert.equal(source.includes(forbidden), false, forbidden)
  }
  assert.doesNotMatch(source, /request\('DELETE'/)
})

test('procurement creation review boundaries and transport cancellation paths pass with legal marker terminals', async () => {
  const context = fixture()
  await run(context)
  assert.equal(context.steps.every((step) => step.passed), true,
    context.steps.filter((step) => !step.passed).map((step) => `${step.name}: ${step.evidence}`).join('\n'))
  assert.equal(context.gaps.length, 1)
  assert.equal(context.gaps[0][1], 'looseboard-pool-fulfillment')
  assert.equal(context.blockers.length, 0)
  assert.equal(context.calls.filter(call => call.path === '/api/auth/login').length, 1)
  assert.equal(context.calls.filter(call => call.path === '/api/auth/logout').length, 1)

  const procurementWrites = context.calls.filter((call) => call.path.includes('/overseas-procurements') && call.method !== 'GET')
  assert.deepEqual(procurementWrites.map((call) => call.method),
    ['POST', 'POST', 'POST', 'PATCH', 'PATCH', 'PATCH', 'PATCH', 'PATCH', 'POST', 'POST', 'POST', 'POST'])
  assert.equal(procurementWrites.filter((call) => call.method === 'PATCH').length, 5)
  assert.ok(procurementWrites.some((call) => call.method === 'PATCH' && call.body.remark === null))
  const procurementReviews = procurementWrites.filter((call) => call.path.includes('/review?'))
  assert.equal(procurementReviews.length, 4)
  assert.ok(procurementReviews.every((call) => Number.isInteger(Number(call.body.version))
    && typeof call.body.idempotencyKey === 'string' && call.body.idempotencyKey.length > 0))
  assert.equal(new Set(procurementReviews.slice(0, 3).map((call) => call.body.idempotencyKey)).size, 1)
  assert.notEqual(procurementReviews[3].body.idempotencyKey, procurementReviews[0].body.idempotencyKey)

  const truckCalls = context.calls.filter((call) => call.path.includes('/us-truck-orders'))
  assert.equal(truckCalls.filter((call) => call.method === 'POST').length, 7)
  assert.equal(truckCalls.filter((call) => call.method === 'GET' && call.path.includes('page=1')).length, 1)
  const truckReviews = truckCalls.filter((call) => call.method === 'POST' && call.path.includes('/review?'))
  assert.equal(truckReviews.length, 4)
  assert.ok(truckReviews.every((call) => Number.isInteger(Number(call.body.version))
    && typeof call.body.idempotencyKey === 'string' && call.body.idempotencyKey.length > 0))
  assert.equal(new Set(truckReviews.slice(0, 3).map((call) => call.body.idempotencyKey)).size, 1)
  assert.notEqual(truckReviews[3].body.idempotencyKey, truckReviews[0].body.idempotencyKey)
  const truckStatuses = truckCalls.filter((call) => call.method === 'PATCH' && call.path.includes('/status?'))
  assert.equal(truckStatuses.length, 1)
  assert.ok(truckStatuses.every((call) => call.body.status === 'CANCELLED'
    && typeof call.body.idempotencyKey === 'string' && call.body.idempotencyKey.length > 0))

  const looseboardCalls = context.calls.filter((call) => call.path.includes('/local-looseboard-orders'))
  assert.equal(looseboardCalls.filter((call) => call.method === 'POST').length, 3)
  assert.equal(looseboardCalls.filter((call) => call.method === 'GET' && call.path.includes('page=1')).length, 1)
  assert.equal(looseboardCalls.filter((call) => call.method === 'PUT').length, 2)
  const looseboardStatuses = looseboardCalls.filter((call) => call.method === 'PATCH' && call.path.includes('/status?'))
  assert.equal(looseboardStatuses.length, 5)
  assert.ok(looseboardStatuses.every((call) => typeof call.body.idempotencyKey === 'string'
    && call.body.idempotencyKey.length > 0))
  assert.equal(new Set(looseboardStatuses.slice(0, 3).map((call) => call.body.idempotencyKey)).size, 1)
  assert.equal(new Set(looseboardStatuses.slice(3).map((call) => call.body.idempotencyKey)).size, 2)
  assert.ok(looseboardStatuses.slice(3).every((call) => call.body.idempotencyKey !== looseboardStatuses[0].body.idempotencyKey))

  const registry = context.createdResources.phase4OverseasBusiness
  assert.equal(registry.purchase.finalStatus, 'REJECTED')
  assert.equal(registry.purchase.retained, false)
  assert.equal(registry.truck.finalStatus, 'CANCELLED')
  assert.equal(registry.truck.retained, false)
  assert.equal(registry.looseboard.finalStatus, 'CANCELLED')
  assert.equal(registry.looseboard.retained, false)
  assert.equal(registry.partnerWarehouse.finalStatus, 'INACTIVE')
  assert.equal(registry.partnerWarehouse.retained, false)
})

test('old versions and reverse transitions are exact A0409 conflicts with trace evidence', async () => {
  const context = fixture()
  await run(context)
  const conflictSteps = context.steps.filter((step) => /A0409|异载荷|逆向/.test(step.name))
  assert.ok(conflictSteps.length >= 7)
  assert.ok(conflictSteps.every((step) => step.passed))
  assert.ok(conflictSteps.every((step) => step.requestId && step.traceId))
  assert.ok(conflictSteps.filter((step) => step.name.includes('旧 version')).every((step) => step.result.body.code === 'A0409'))
  assert.ok(context.steps.filter((step) => /流水/.test(step.name)).every((step) => step.passed))
})

test('missing merchant fixture is an explicit deployment blocker and never a coverage gap', async () => {
  const context = fixture({ credentials: false })
  await run(context)
  assert.equal(context.gaps.length, 0)
  assert.ok(context.blockers.some((step) => step.name === '采购客户登录前置完整'))
  assert.equal(context.calls.some((call) => call.path.includes('/overseas-procurements')), false)
  assert.equal(context.calls.some((call) => call.path.includes('/us-truck-orders')), false)
  assert.equal(context.calls.some((call) => call.path.includes('/local-looseboard-orders')), false)
})

test('fixture customer must itself be active and cannot borrow another customer identity', async () => {
  const context = fixture({ activeCustomers: [{ id: '10002', tenantName: '其他客户', status: 'ACTIVE' }] })
  await run(context)
  assert.equal(context.gaps.length, 0)
  assert.ok(context.blockers.some((step) => step.name === '本轮资格客户属于 ACTIVE 候选'))
  assert.equal(context.calls.some((call) => call.path === '/api/auth/login'), false)
  assert.equal(context.calls.some((call) => call.path.includes('/overseas-procurements')), false)
})

test('candidate blocker still rejects partial procurement and retires partner warehouse', async () => {
  const context = fixture({ warehouseOptions: [] })
  await run(context)
  assert.equal(context.gaps.length, 0)
  assert.ok(context.blockers.some((step) => step.name === '采购仓候选存在 ACTIVE 仓'))
  const registry = context.createdResources.phase4OverseasBusiness
  assert.equal(registry.purchase.finalStatus, 'REJECTED')
  assert.equal(registry.purchase.retained, false)
  assert.equal(registry.partnerWarehouse.finalStatus, 'INACTIVE')
  assert.equal(registry.partnerWarehouse.retained, false)
  assert.equal(context.calls.some((call) => call.path.includes('/us-truck-orders')), false)
  assert.equal(context.calls.some((call) => call.path.includes('/local-looseboard-orders')), false)
})

test('contract locks candidates three-state idempotency histories legal terminals and trace evidence', () => {
  for (const token of ['/api/platform/v1/iam/tenants?page=1&size=200&status=ACTIVE',
    '/overseas-procurements/customer-options?limit=200', '/overseas-procurements/warehouse-options',
    '/api/merchant/v1/last-leg/overseas-procurements', '采购备注显式清空', '缺失备注不修改且版本不漂移',
    '同幂等键同载荷精确重放', '同幂等键异载荷返回冲突', '旧 version 返回 A0409',
    '状态正向推进', '状态逆向回退返回冲突', '流水覆盖', "status: 'CANCELLED'",
    '/review', 'truck-review-approve', 'looseboard-status-dispatched',
    'requestId=', 'traceId=', 'createdResources.phase4OverseasBusiness']) assert.ok(source.includes(token), token)
})