import { createPicker, disablePicker, resolvePickerAccess } from './phase4-overseas-pda.mjs'

const MODULE = 'phase5-overseas-fulfillment'
const SCENARIO = 'phase5-dispatch-outbound-delivery-exception-visit'
const OPTIONS = { scenario: SCENARIO, deploymentBlocker: true }
const DISPATCH_BASE = '/api/platform/v1/last-leg/dispatches'
const LASTLEG_BASE = '/api/platform/v1/last-leg'
const PDA_DISPATCH_BASE = '/api/pda/v1/last-leg/dispatches'
const MERCHANT_DELIVERY_BASE = '/api/merchant/v1/last-leg/delivery-orders'

function id(value) { return value == null ? '' : String(value) }
function nonBlank(value) { return typeof value === 'string' && value.trim() !== '' }
function success(response) { return response?.http === 200 && String(response?.body?.code) === '200' }
function code(response) { return String(response?.body?.code ?? '') }
function conflict(response) {
  return response?.http === 409 || (response?.http === 200 && ['409', 'A0409'].includes(code(response)))
}
function trace(response) {
  return `HTTP=${response?.http ?? 'missing'}, code=${code(response) || 'missing'}, requestId=${response?.requestId || 'missing'}, traceId=${response?.traceId || 'missing'}`
}
function query(path, values) {
  const params = new URLSearchParams()
  for (const [name, value] of Object.entries(values || {})) {
    if (value !== undefined && value !== null && String(value) !== '') params.set(name, String(value))
  }
  return params.size ? `${path}?${params}` : path
}
function key(context, action, suffix = '') {
  return `${context.marker}-P5-${action}-${suffix}`.replace(/[^A-Za-z0-9:_-]/g, '').slice(0, 200)
}
function blocker(context, name, reason, response = null) {
  context.addCoverageGap(MODULE, SCENARIO, name, reason, 'fixture-unavailable', { deploymentBlocker: true })
  context.assert(MODULE, `${name}覆盖前置`, response, false, `${reason}; ${trace(response)}`, OPTIONS)
}
async function platform(context, method, name, path, body = undefined) {
  const response = await context.requestOverseas(method, path, body)
  const data = context.apiSuccess(MODULE, name, response, trace(response), OPTIONS)
  return { response, data }
}
async function pda(context, token, method, name, path, body = undefined) {
  const response = await context.requestOverseas(method, path, body, {}, token)
  context.addStep(MODULE, name, response, success(response), trace(response), OPTIONS)
  return { response, data: success(response) ? response.body?.data : null }
}
async function merchant(context, token, method, name, path, body = undefined) {
  const response = await context.requestOverseas(method, path, body, {}, token)
  const data = context.apiSuccess(MODULE, name, response, trace(response), OPTIONS)
  return { response, data }
}

async function loginMerchant(context, customerId) {
  const merchantFixture = context.context?.merchantQualificationFixture
  const credentials = nonBlank(merchantFixture?.username) && nonBlank(merchantFixture?.password)
    ? { username: merchantFixture.username, password: merchantFixture.password }
    : { username: context.options?.merchantUsername, password: context.options?.merchantPassword }
  if (!nonBlank(credentials.username) || !nonBlank(credentials.password)) {
    blocker(context, '取得本轮客户工作台账号', '既无本轮动态客户凭据，也未配置开发验收客户凭据')
    return null
  }
  const response = await context.request('POST', '/api/auth/login', {
    loginId: credentials.username,
    password: credentials.password,
  }, '')
  const auth = context.apiSuccess(MODULE, '本轮客户工作台账号登录', response, trace(response), OPTIONS)
  context.assert(MODULE, '客户登录返回海外访问Token', response, nonBlank(auth?.overseasAccessToken),
    `tokenPresent=${Boolean(auth?.overseasAccessToken)}; ${trace(response)}`, OPTIONS)
  if (!nonBlank(auth?.accessToken) || !nonBlank(auth?.overseasAccessToken)) return null
  const profileResponse = await context.request('GET', '/api/merchant/v1/iam/tenant/profile', undefined, auth.accessToken)
  const profile = context.apiSuccess(MODULE, '回查客户工作台企业身份', profileResponse,
    trace(profileResponse), OPTIONS)
  context.assert(MODULE, '客户工作台企业与五期履约客户严格一致', profileResponse,
    id(profile?.id) === customerId,
    `merchantCustomer=${id(profile?.id) || 'missing'}, fulfillmentCustomer=${customerId}; ${trace(profileResponse)}`, OPTIONS)
  return id(profile?.id) === customerId ? auth.overseasAccessToken : null
}

function fixture(context) {
  const dispatch = context.createdResources?.phase4OverseasDispatch
  const receiving = context.createdResources?.phase4OverseasPda
  if (dispatch?.marker !== context.marker || dispatch?.finalStatus !== 'PENDING_DEPARTURE'
      || !nonBlank(dispatch?.dispatchNo)) return null
  if (receiving?.marker !== context.marker || receiving?.finalStatus !== 'COMPLETED'
      || !id(receiving?.overseasWarehouseId) || !id(receiving?.customerId)) return null
  return { dispatch, receiving }
}

async function pickAll(context, token, dispatchNo) {
  let detail = await pda(context, token, 'GET', 'PDA读取本轮排车拣货任务',
    `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}`)
  const items = Array.isArray(detail.data?.items) ? detail.data.items : []
  if (!success(detail.response) || items.length === 0) {
    blocker(context, 'PDA排车拣货任务', '本轮排车未生成可操作PDA托盘任务', detail.response)
    return false
  }

  for (const [itemIndex, item] of items.entries()) {
    let remaining = Number(item.scheduledPackages || 0) - Number(item.pickedPackages || 0)
    const positions = Array.isArray(item.positions) ? item.positions : []
    for (const [positionIndex, position] of positions.entries()) {
      if (remaining <= 0) break
      const available = Number(position.availablePackages || 0)
      if (available <= 0) continue
      const packages = Math.min(remaining, available)
      const body = {
        positionId: id(position.id), packages, productQuantity: packages,
        idempotencyKey: key(context, 'DISPATCH-PICK', `${itemIndex}-${positionIndex}`),
        remark: `${context.marker}-phase5-dispatch-pick`,
      }
      const picked = await pda(context, token, 'POST', `PDA拣货托盘${itemIndex + 1}库存位${positionIndex + 1}`,
        `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}/items/${encodeURIComponent(id(item.dispatchItemId))}/pick`, body)
      if (!success(picked.response)) return false
      const replay = await pda(context, token, 'POST', `PDA拣货托盘${itemIndex + 1}同键重放`,
        `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}/items/${encodeURIComponent(id(item.dispatchItemId))}/pick`, body)
      context.assert(MODULE, `PDA拣货托盘${itemIndex + 1}重放数量稳定`, replay.response,
        success(replay.response) && Number(replay.data?.pickedPackages) === Number(picked.data?.pickedPackages),
        trace(replay.response), OPTIONS)
      remaining -= packages
    }
    if (remaining !== 0) {
      blocker(context, `PDA托盘${itemIndex + 1}足量库存`,
        `scheduled=${item.scheduledPackages}, picked=${item.pickedPackages}, remaining=${remaining}`, detail.response)
      return false
    }
  }

  const completeBody = { idempotencyKey: key(context, 'DISPATCH-COMPLETE') }
  const completed = await pda(context, token, 'POST', 'PDA确认排车拣货全部完成',
    `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}/complete`, completeBody)
  context.assert(MODULE, '排车进入READY_TO_DEPART且数量守恒', completed.response,
    completed.data?.status === 'READY_TO_DEPART'
      && Number(completed.data?.plannedPackages) === Number(completed.data?.pickedPackages)
      && Number(completed.data?.remainingPackages) === 0,
    trace(completed.response), OPTIONS)
  if (!success(completed.response)) return false
  const replay = await pda(context, token, 'POST', 'PDA完成排车拣货同键重放',
    `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}/complete`, completeBody)
  context.assert(MODULE, 'PDA完成拣货重放明确标记且结果稳定', replay.response,
    replay.data?.replayed === true && replay.data?.status === 'READY_TO_DEPART', trace(replay.response), OPTIONS)
  return success(replay.response)
}

export async function run(context) {
  context.createdResources.phase5OverseasFulfillment = {
    marker: context.marker, dispatchNo: null, outboundNo: null, deliveryNo: null,
    visitId: null, manualExceptionNo: null, returnExceptionNo: null, finalStatus: null,
    cleanup: 'marker-owned completed delivery, customer visit and return exception are retained as acceptance evidence',
  }
  const source = fixture(context)
  if (!source) {
    blocker(context, '取得本轮四期已收货排车前置',
      `dispatchMarker=${context.createdResources?.phase4OverseasDispatch?.marker || 'missing'}, dispatchStatus=${context.createdResources?.phase4OverseasDispatch?.finalStatus || 'missing'}, receivingStatus=${context.createdResources?.phase4OverseasPda?.finalStatus || 'missing'}`)
    return
  }
  const dispatchNo = source.dispatch.dispatchNo
  const customerId = id(source.receiving.customerId)
  const warehouseId = id(source.receiving.overseasWarehouseId)
  context.createdResources.phase5OverseasFulfillment.dispatchNo = dispatchNo
  const merchantToken = await loginMerchant(context, customerId)
  if (!merchantToken) return

  const updateBody = {
    vehiclePlate: `DEV-${context.marker.slice(-8)}`.slice(0, 64),
    driverName: `五期验收司机-${context.marker.slice(-6)}`,
    driverPhone: '19900000000', carrierName: '五期开发验收车队',
    route: `${context.marker}-PHASE5-ROUTE`, estimatedArrivalAt: new Date(Date.now() + 86_400_000).toISOString(),
  }
  const updated = await platform(context, 'PUT', '补齐本轮排车车辆司机与线路',
    `${DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}`, updateBody)
  context.assert(MODULE, '排车编辑字段完整回显', updated.response,
    updated.data?.dispatchNo === dispatchNo && updated.data?.vehiclePlate === updateBody.vehiclePlate
      && updated.data?.driverName === updateBody.driverName && updated.data?.route === updateBody.route,
    trace(updated.response), OPTIONS)
  if (!success(updated.response)) return

  const transferBody = {
    idempotencyKey: key(context, 'TRANSFER'), plannedDeliveryAt: new Date(Date.now() + 172_800_000).toISOString(),
    deliveryMethod: 'TRUCK_PALLET', waybillNo: `${context.marker}-WAYBILL`.slice(0, 64),
    carrierName: updateBody.carrierName, pickupMethod: 'WAREHOUSE_PICKUP', loadingType: 'PALLET',
    vehicleType: 'TRUCK', vehicleSize: 'MEDIUM', driverName: updateBody.driverName,
    driverPhone: updateBody.driverPhone, vehiclePlate: updateBody.vehiclePlate,
    appointmentAccount: 'SELF', sellerName: null, remark: `${context.marker}-phase5-transfer`,
    fees: [{ feeType: 'DELIVERY_FEE', currency: 'USD', amount: 10, remark: `${context.marker}-acceptance` }],
  }
  const transferred = await merchant(context, merchantToken, 'POST', '客户创建派送并原子转出库单',
    query(MERCHANT_DELIVERY_BASE, { dispatchNo }), transferBody)
  const outboundNo = id(transferred.data?.outboundNo)
  const deliveryNo = id(transferred.data?.deliveryNo)
  context.assert(MODULE, '转派送同时生成WAIT_OUTBOUND与WAIT_DELIVERY单据', transferred.response,
    nonBlank(outboundNo) && nonBlank(deliveryNo) && transferred.data?.outboundStatus === 'WAIT_OUTBOUND'
      && transferred.data?.deliveryStatus === 'WAIT_DELIVERY' && Number(transferred.data?.packageCount) > 0,
    `outboundNo=${outboundNo || 'missing'}, deliveryNo=${deliveryNo || 'missing'}; ${trace(transferred.response)}`, OPTIONS)
  if (!success(transferred.response) || !outboundNo || !deliveryNo) return
  Object.assign(context.createdResources.phase5OverseasFulfillment, { outboundNo, deliveryNo })
  const transferReplay = await merchant(context, merchantToken, 'POST', '客户创建派送同键重放',
    query(MERCHANT_DELIVERY_BASE, { dispatchNo }), transferBody)
  context.assert(MODULE, '转派送重放复用同一业务单据', transferReplay.response,
    transferReplay.data?.replayed === true && id(transferReplay.data?.outboundNo) === outboundNo
      && id(transferReplay.data?.deliveryNo) === deliveryNo, trace(transferReplay.response), OPTIONS)
  const transferConflict = await context.requestOverseas('POST', query(MERCHANT_DELIVERY_BASE, { dispatchNo }),
    { ...transferBody, idempotencyKey: key(context, 'TRANSFER-DIFFERENT') }, {}, merchantToken)
  context.addStep(MODULE, '同一排车使用另一幂等键仍返回既有单据', transferConflict,
    success(transferConflict) && id(transferConflict.body?.data?.outboundNo) === outboundNo
      && transferConflict.body?.data?.replayed === true, trace(transferConflict), OPTIONS)

  const merchantPage = await merchant(context, merchantToken, 'GET', '客户分页回查自身派送单',
    query(MERCHANT_DELIVERY_BASE, { page: 1, size: 20, dispatchNo }))
  const merchantRows = Array.isArray(merchantPage.data?.records) ? merchantPage.data.records : []
  context.assert(MODULE, '客户派送列表包含本轮单据且不依赖customerId参数', merchantPage.response,
    merchantRows.some((value) => id(value?.deliveryNo) === deliveryNo && id(value?.dispatchNo) === dispatchNo),
    `records=${merchantRows.length}; ${trace(merchantPage.response)}`, OPTIONS)
  const merchantDetail = await merchant(context, merchantToken, 'GET', '客户读取自身派送详情',
    `${MERCHANT_DELIVERY_BASE}/${encodeURIComponent(deliveryNo)}`)
  context.assert(MODULE, '客户派送详情返回订单、货物、费用与操作四段正式契约', merchantDetail.response,
    id(merchantDetail.data?.order?.deliveryNo) === deliveryNo
      && id(merchantDetail.data?.order?.dispatchNo) === dispatchNo
      && Array.isArray(merchantDetail.data?.skus) && merchantDetail.data.skus.length > 0
      && Array.isArray(merchantDetail.data?.fees) && Array.isArray(merchantDetail.data?.operations),
    `skus=${merchantDetail.data?.skus?.length ?? 'missing'}, fees=${merchantDetail.data?.fees?.length ?? 'missing'}, operations=${merchantDetail.data?.operations?.length ?? 'missing'}; ${trace(merchantDetail.response)}`,
    OPTIONS)

  const access = await resolvePickerAccess(context)
  const picker = access ? await createPicker(context, 5, warehouseId, access) : null
  try {
    if (!nonBlank(picker?.token)) {
      blocker(context, '创建本轮五期PDA操作员', '正式IAM账号已创建但海外安全投影或登录未就绪')
      return
    }
    if (!await pickAll(context, picker.token, dispatchNo)) return
    const departBody = { idempotencyKey: key(context, 'DISPATCH-DEPART'), remark: `${context.marker}-depart` }
    const departed = await pda(context, picker.token, 'POST', 'PDA确认车辆发车并完成真实出库',
      `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}/depart`, departBody)
    context.assert(MODULE, '发车推进排车DEPARTED并扣减实物库存一次', departed.response,
      departed.data?.status === 'DEPARTED' && Number(departed.data?.shippedPackages) > 0,
      trace(departed.response), OPTIONS)
    if (!success(departed.response)) return
    const departReplay = await pda(context, picker.token, 'POST', 'PDA发车同键重放',
      `${PDA_DISPATCH_BASE}/${encodeURIComponent(dispatchNo)}/depart`, departBody)
    context.assert(MODULE, 'PDA发车重放明确标记且发运数量稳定', departReplay.response,
      departReplay.data?.replayed === true
        && Number(departReplay.data?.shippedPackages) === Number(departed.data?.shippedPackages),
      trace(departReplay.response), OPTIONS)
  } finally {
    await disablePicker(context, picker, 5)
    if (picker) picker.token = null
  }

  const outbound = await platform(context, 'GET', '回查发车后出库单状态',
    query(`${LASTLEG_BASE}/outbound-orders/${encodeURIComponent(outboundNo)}`, { page: 1, size: 20 }))
  context.assert(MODULE, '排车PDA发车同步出库单OUTBOUNDED', outbound.response,
    outbound.data?.outbound?.outboundNo === outboundNo && outbound.data?.outbound?.status === 'OUTBOUNDED',
    trace(outbound.response), OPTIONS)

  const delivering = await platform(context, 'PUT', '派送单推进配送中',
    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/status`, { customerId }),
    { status: 'DELIVERING', remark: `${context.marker}-delivering` })
  context.assert(MODULE, '派送状态进入DELIVERING', delivering.response,
    delivering.data?.deliveryStatus === 'DELIVERING', trace(delivering.response), OPTIONS)
  const completed = await platform(context, 'POST', '确认派送完成并生成客户回访',
    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/complete`, { customerId }))
  const visitId = id(completed.data?.visitId)
  context.assert(MODULE, '派送完成生成PENDING回访记录', completed.response,
    completed.data?.deliveryStatus === 'DELIVERED' && completed.data?.visitStatus === 'PENDING'
      && /^\d+$/.test(visitId), `visitIdPresent=${/^\d+$/.test(visitId)}; ${trace(completed.response)}`, OPTIONS)
  if (!success(completed.response) || !visitId) return
  context.createdResources.phase5OverseasFulfillment.visitId = visitId
  const completeReplay = await platform(context, 'POST', '确认派送完成重复调用',
    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/complete`, { customerId }))
  context.assert(MODULE, '派送完成重放复用同一回访', completeReplay.response,
    completeReplay.data?.replayed === true && id(completeReplay.data?.visitId) === visitId,
    trace(completeReplay.response), OPTIONS)

  const visitDetail = await platform(context, 'GET', '读取本轮客户回访详情',
    query(`${LASTLEG_BASE}/customer-visits/${encodeURIComponent(visitId)}`, { customerId }))
  const inbound = Array.isArray(visitDetail.data?.inboundOrders)
    ? visitDetail.data.inboundOrders.find((value) => id(value?.inboundOrderId) && nonBlank(value?.lastMileOrderNo)) : null
  context.assert(MODULE, '回访详情包含派送关联的真实入仓单与尾程单', visitDetail.response,
    Boolean(inbound), `inboundOption=${Boolean(inbound)}; ${trace(visitDetail.response)}`, OPTIONS)
  if (!inbound) return
  const savedVisit = await platform(context, 'PUT', '保存无附件客户回访结果',
    query(`${LASTLEG_BASE}/customer-visits/${encodeURIComponent(visitId)}`, { customerId }), {
      selectedInboundOrderId: id(inbound.inboundOrderId), visitResult: 'SATISFIED',
      customerFeedback: `${context.marker}-customer-feedback`, remark: `${context.marker}-visit-completed`, attachments: [],
    })
  context.assert(MODULE, '客户回访完成并冻结所选业务入仓码', savedVisit.response,
    savedVisit.data?.visit?.status === 'COMPLETED'
      && savedVisit.data?.visit?.selectedInboundCode === inbound.inboundCode
      && savedVisit.data?.visit?.visitResult === 'SATISFIED', trace(savedVisit.response), OPTIONS)

  const manualException = await platform(context, 'POST', '为本轮尾程单创建人工异常',
    `${LASTLEG_BASE}/exception-orders`, {
      customerId, inboundCode: inbound.inboundCode, lastMileOrderNo: inbound.lastMileOrderNo,
      exceptionType: 'DAMAGED', reason: `${context.marker}-manual-exception`, packageCount: 1, skuCode: null,
    })
  const manualExceptionNo = id(manualException.data?.exceptionNo)
  context.assert(MODULE, '人工异常进入PENDING并返回业务单号', manualException.response,
    nonBlank(manualExceptionNo) && manualException.data?.status === 'PENDING', trace(manualException.response), OPTIONS)
  context.createdResources.phase5OverseasFulfillment.manualExceptionNo = manualExceptionNo || null

  const returnOptions = await platform(context, 'GET', '查询派送退回可选入仓单',
    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/return-inbound-options`, { customerId }))
  const returnInbound = Array.isArray(returnOptions.data)
    ? returnOptions.data.find((value) => id(value?.inboundOrderId) === id(inbound.inboundOrderId)) : null
  context.assert(MODULE, '退回候选严格属于当前派送单', returnOptions.response,
    Boolean(returnInbound), `candidate=${Boolean(returnInbound)}; ${trace(returnOptions.response)}`, OPTIONS)
  if (!returnInbound) return
  const returned = await platform(context, 'POST', '标记派送退回海外仓并创建退货异常',
    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}/mark-return`, { customerId }), {
      inboundOrderId: id(returnInbound.inboundOrderId), reason: `${context.marker}-delivery-return`,
      returnDirection: 'OVERSEAS_WAREHOUSE', returnLogisticsNo: `${context.marker}-RETURN`.slice(0, 128),
      packageCount: 1, skuCode: null,
    })
  const returnExceptionNo = id(returned.data?.exceptionNo)
  context.assert(MODULE, '派送退回生成独立PENDING异常单', returned.response,
    nonBlank(returnExceptionNo) && returned.data?.status === 'PENDING'
      && returnExceptionNo !== manualExceptionNo, trace(returned.response), OPTIONS)
  context.createdResources.phase5OverseasFulfillment.returnExceptionNo = returnExceptionNo || null

  const delivery = await platform(context, 'GET', '回查派送退回终态',
    query(`${LASTLEG_BASE}/delivery-orders/${encodeURIComponent(deliveryNo)}`, { customerId }))
  context.assert(MODULE, '派送退回后单据状态为RETURN_PENDING且保留出库关联', delivery.response,
    delivery.data?.order?.status === 'RETURN_PENDING' && delivery.data?.order?.outboundNo === outboundNo,
    trace(delivery.response), OPTIONS)
  const exceptionPage = await platform(context, 'GET', '分页回查本轮两类异常',
    query(`${LASTLEG_BASE}/exception-orders`, { page: 1, size: 20, customerId, keyword: context.marker }))
  const exceptionRows = Array.isArray(exceptionPage.data?.records) ? exceptionPage.data.records : []
  context.assert(MODULE, '异常列表同时包含人工异常与派送退回异常', exceptionPage.response,
    exceptionRows.some((value) => id(value?.exceptionNo) === manualExceptionNo)
      && exceptionRows.some((value) => id(value?.exceptionNo) === returnExceptionNo),
    `records=${exceptionRows.length}; ${trace(exceptionPage.response)}`, OPTIONS)
  context.createdResources.phase5OverseasFulfillment.finalStatus = 'RETURN_PENDING_WITH_COMPLETED_VISIT'
}