const MODULE = 'phase3-container-customs-fixture'
const OPTIONS = { scenario: 'phase3-container-customs-mixed-fixture', deploymentBlocker: true }
const PLATFORM = '/api/platform/v1/customs/loading-plans'
const MERCHANT = '/api/merchant/v1/customs'

const id = (value) => value == null ? '' : String(value)
const success = (response) => response?.http === 200 && String(response?.body?.code) === '200'
const key = (context, value) => `${context.marker}-mixed-customs-${value}`.slice(0, 128)

async function raw(context, method, path, body, token, headers = {}) {
  try {
    const response = await fetch(`${context.options.gateway}${path}`, {
      method,
      headers: {
        Accept: 'application/json', Authorization: token ? `Bearer ${token}` : '',
        ...(body === undefined || body instanceof FormData ? {} : { 'Content-Type': 'application/json; charset=utf-8' }),
        ...headers,
      },
      body: body === undefined ? undefined : body instanceof FormData ? body : JSON.stringify(body),
      signal: AbortSignal.timeout(120_000),
    })
    const bytes = new Uint8Array(await response.arrayBuffer())
    const contentType = response.headers.get('content-type') || ''
    let payload = null
    if (contentType.includes('json')) {
      try { payload = JSON.parse(new TextDecoder().decode(bytes)) } catch { /* bounded binary evidence */ }
    }
    return {
      method, path, http: response.status, body: payload,
      raw: payload == null && contentType.includes('text') ? new TextDecoder().decode(bytes).slice(0, 500) : null,
      bytes, contentType,
      requestId: payload?.requestId || response.headers.get('x-request-id'),
      traceId: payload?.traceId || response.headers.get('x-trace-id'),
    }
  } catch (error) {
    return { method, path, http: 0, body: null, bytes: new Uint8Array(), raw: String(error) }
  }
}

async function loginMerchant(context) {
  const account = context.context?.merchantQualificationFixture
  const username = account?.username || process.env.MERCHANT_TEST_USERNAME || ''
  const password = account?.password || process.env.MERCHANT_TEST_PASSWORD || ''
  if (!username || !password) throw new Error('缺少客户登录凭据')
  const response = await context.request('POST', '/api/auth/login', {
    username, password,
  }, '')
  const token = success(response) ? response.body?.data?.accessToken : null
  if (!token) throw new Error(`本轮客户登录失败: requestId=${response?.requestId || 'missing'}, traceId=${response?.traceId || 'missing'}`)
  return token
}

function routes(context, merchantToken) {
  const binary = (method, path, token = context.token) => raw(context, method, path, undefined, token)
  const multipart = (path, fields, file, token, idempotencyKey) => {
    const form = new FormData()
    for (const [name, value] of Object.entries(fields || {})) {
      const values = Array.isArray(value) ? value : [value]
      for (const item of values) if (item != null) form.append(name, String(item))
    }
    form.append('file', new Blob([file.content], { type: file.contentType }), file.fileName)
    return raw(context, 'POST', path, form, token, { 'Idempotency-Key': idempotencyKey })
  }
  return {
    version: 1,
    platformDetail: (ctx, value) => ctx.request('GET', `${PLATFORM}/${encodeURIComponent(id(value.loadingPlanId))}`),
    merchantDetail: (ctx, fixture, customer, token = merchantToken) => ctx.request('GET',
      `${MERCHANT}/orders/${encodeURIComponent(id(customer.orderId))}`, undefined, token),
    merchantPlatformDetail: (ctx, fixture) => ctx.request('GET',
      `${PLATFORM}/${encodeURIComponent(id(fixture.loadingPlanId))}`, undefined, merchantToken),
    merchantUploadDocument: (ctx, fixture, customer, file, idempotencyKey) => multipart(
      `${MERCHANT}/loading-plans/${encodeURIComponent(id(fixture.loadingPlanId))}/documents/upload?${customer.inboundIds.map((value) => `inboundIds=${encodeURIComponent(id(value))}`).join('&')}`,
      {}, file, customer.customerToken || merchantToken, idempotencyKey),
    merchantReplaceDocument: (ctx, fixture, customer, file, idempotencyKey) => multipart(
      `${MERCHANT}/documents/${encodeURIComponent(id(file.documentId))}/upload?expectedVersion=${Number(file.expectedVersion)}&${customer.inboundIds.map((value) => `inboundIds=${encodeURIComponent(id(value))}`).join('&')}`,
      {}, file, customer.customerToken || merchantToken, idempotencyKey),
    merchantUpdateScope: (ctx, fixture, customer, request, idempotencyKey) => ctx.request('PUT',
      `${MERCHANT}/documents/${encodeURIComponent(id(request.documentId))}/inbounds`, {
        inboundIds: request.inboundIds.map(id), expectedVersion: Number(request.expectedVersion),
      }, customer.customerToken || merchantToken, { 'Idempotency-Key': idempotencyKey }),
    merchantDeleteDocument: (ctx, fixture, customer, request, idempotencyKey) => ctx.request('DELETE',
      `${MERCHANT}/documents/${encodeURIComponent(id(request.documentId))}?expectedVersion=${Number(request.expectedVersion)}`,
      undefined, customer.customerToken || merchantToken, { 'Idempotency-Key': idempotencyKey }),
    platformStart: (ctx, fixture, request, idempotencyKey) => ctx.request('POST',
      `${PLATFORM}/${encodeURIComponent(id(fixture.loadingPlanId))}/start`, request, ctx.token,
      { 'Idempotency-Key': idempotencyKey }),
    platformUploadCompletion: (ctx, fixture, request, idempotencyKey) => multipart(
      `${PLATFORM}/documents/${encodeURIComponent(id(request.documentId))}/completion/upload?expectedVersion=${Number(request.expectedVersion)}&finalConfirmation=${request.finalConfirmation === true}`,
      {}, request, ctx.token, idempotencyKey),
    platformComplete: (ctx, fixture, request, idempotencyKey) => ctx.request('POST',
      `${PLATFORM}/${encodeURIComponent(id(fixture.loadingPlanId))}/complete-all-buy`, request, ctx.token,
      { 'Idempotency-Key': idempotencyKey }),
    platformDownload: (ctx, fixture, request) => binary('GET',
      `${PLATFORM}/documents/${encodeURIComponent(id(request.documentId))}/${request.completion ? 'completion/' : ''}download`),
    merchantDownload: (ctx, fixture, customer, request) => binary('GET',
      `${MERCHANT}/documents/${encodeURIComponent(id(request.documentId))}/${request.completion ? 'completion/' : ''}download`,
      customer.customerToken || merchantToken),
    buyDeclarationXlsx: async (ctx, request) => {
      const created = await ctx.request('POST', '/api/platform/v1/files/export-tasks', {
        exportType: 'LOADING_LIST_BUY_DECLARATION_ITEMS', format: 'XLSX',
        taskName: `${ctx.marker}-mixed-buy-declaration`,
        parameters: { loadingPlanId: id(request.loadingPlanId) },
      })
      let task = success(created) ? created.body?.data : null
      const taskId = id(task?.id)
      for (let attempt = 0; taskId && attempt < 30 && !['SUCCEEDED', 'FAILED', 'EXPIRED'].includes(task?.status); attempt += 1) {
        await new Promise((resolve) => setTimeout(resolve, 1_000))
        const detail = await ctx.request('GET', `/api/platform/v1/files/export-tasks/${encodeURIComponent(taskId)}`)
        if (success(detail)) task = detail.body.data
      }
      if (!taskId || task?.status !== 'SUCCEEDED') return { ...created, task, bytes: new Uint8Array() }
      const download = await ctx.requestBinary('GET', `/api/platform/v1/files/export-tasks/${encodeURIComponent(taskId)}/download`)
      return { ...download, task, taskId, createResponse: created }
    },
    outboundState: async (ctx, fixture) => {
      const detail = await ctx.request('GET', `/api/platform/v1/first-leg/outbound-dispatches/${encodeURIComponent(id(fixture.containerBookingId))}`)
      const aggregate = success(detail) ? detail.body?.data?.aggregate : null
      const history = success(detail) ? detail.body?.data?.timeline || [] : []
      return {
        ...detail,
        body: { ...detail.body, data: {
          customsStatus: fixture.customsStatus,
          departed: aggregate?.dispatchStatus === 'WAITING_FOR_LOADING',
          retryable: aggregate?.dispatchStatus === 'READY_FOR_DISPATCH',
          departureHistoryCount: history.filter((item) => item.module === 'OUTBOUND_DISPATCH'
            && item.action === 'CONFIRM_DISPATCH').length,
          aggregate, timeline: history,
        } },
      }
    },
    satisfyOutboundPrerequisites: async () => undefined,
  }
}

export async function prepare(context) {
  const restore = await context.preparePhase3LoadingFixture('-CUSTOMS-MIXED', false, {
    primary: 'BUY_DECLARATION', incremental: 'TAX_REFUND',
  })
  const loading = await import('./phase3-loading.mjs')
  await context.executeModule(`${MODULE}-loading`, () => loading.run(context))
  const finalize = await import('./phase3-loading-finalize.mjs')
  await context.executeModule(`${MODULE}-finalize`, () => finalize.run(context))

  const source = context.createdResources?.phase3Loading
  if (!source?.loadingPlanId || !source?.containerBookingId || source?.finalStatus !== 'LOADED') {
    restore()
    throw new Error(`混合柜未进入LOADED: planId=${id(source?.loadingPlanId) || 'missing'}, status=${source?.finalStatus || 'missing'}`)
  }
  const platform = await context.request('GET', `${PLATFORM}/${encodeURIComponent(id(source.loadingPlanId))}`)
  const customs = success(platform) ? platform.body.data : null
  const plan = await context.request('GET', `/api/platform/v1/first-leg/loading-plans/${encodeURIComponent(id(source.loadingPlanId))}`)
  const planItems = success(plan) && Array.isArray(plan.body?.data?.items) ? plan.body.data.items : []
  const inbounds = Array.isArray(customs?.inbounds) ? customs.inbounds : []
  const buy = inbounds.filter((item) => item.taxMode === 'BUY_DECLARATION')
  const refund = inbounds.filter((item) => item.taxMode === 'TAX_REFUND')
  context.assert(MODULE, '正式LOADED计划同时包含BUY与TAX实际入仓票', platform,
    buy.length > 0 && refund.length > 0 && inbounds.every((item) => /^\d{16,}$/.test(id(item.inboundId))),
    `buy=${buy.length}, tax=${refund.length}, inbounds=${inbounds.length}`, OPTIONS)
  if (!buy.length || !refund.length) {
    restore()
    throw new Error(`正式装柜API未形成混合柜: buy=${buy.length}, tax=${refund.length}`)
  }
  const merchantToken = await loginMerchant(context)
  const customerId = id(refund[0].tenantId)
  const customer = {
    customerId, orderId: id(refund[0].orderId),
    inboundIds: refund.map((item) => id(item.inboundId)),
    document: {
      fileName: `${context.marker}-tax-refund.customblob`, contentType: 'application/octet-stream',
      content: Uint8Array.from([0x54, 0x41, 0x58]),
    },
    replacement: {
      fileName: `${context.marker}-tax-refund-v2.customblob`, contentType: 'application/octet-stream',
      content: Uint8Array.from([0x54, 0x41, 0x58, 0x32]),
    },
    updatedInboundIds: refund.map((item) => id(item.inboundId)),
  }
  const buyInboundIds = new Set(buy.map((item) => id(item.inboundId)))
  const planBuyRows = planItems.filter((item) => buyInboundIds.has(id(item.inboundId))).length
  const expectedBuyRows = planBuyRows > 0 ? planBuyRows : buy.length
  context.createdResources.phase3ContainerCustomsFixtures = {
    marker: context.marker, requestedKinds: ['MIXED'],
    containers: [{
      kind: 'MIXED', marker: context.marker, status: 'LOADED', autoDispatchMode: 'IMMEDIATE',
      loadingPlanId: id(source.loadingPlanId), containerBookingId: id(source.containerBookingId),
      oceanBookingId: id(source.oceanBookingId), containerNo: source.containerNo,
      inbounds: inbounds.map((item) => ({
        inboundId: id(item.inboundId), orderId: id(item.orderId), customerId: id(item.tenantId),
        inboundCode: item.inboundCode, taxMode: item.taxMode,
      })),
      customers: [customer], expectedBuyRows, buyInboundIds: [...buyInboundIds], customsStatus: customs.status,
    }],
  }
  context.context.phase3ContainerCustomsRoutes = routes(context, merchantToken)
  return () => {
    delete context.context.phase3ContainerCustomsRoutes
    restore()
  }
}