import assert from 'node:assert/strict'
import { readFileSync } from 'node:fs'
import test from 'node:test'
import { compile, computed, createSSRApp, effectScope, proxyRefs, ref, watch } from 'vue'
import { renderToString } from 'vue/server-renderer'
import { parse } from '@vue/compiler-sfc'
import ts from 'typescript'

const file = new URL('../src/views/crm/quote/components/QuoteFormPanel.vue', import.meta.url)
const { descriptor } = parse(readFileSync(file, 'utf8'))
const ast = ts.createSourceFile(
  'QuoteFormPanel.ts',
  descriptor.scriptSetup!.content,
  ts.ScriptTarget.Latest,
  true
)

function deferred() {
  let resolve!: (value: any) => void
  let reject!: (error: Error) => void
  const promise = new Promise<any>((yes, no) => {
    resolve = yes
    reject = no
  })
  return { promise, resolve, reject }
}

// Run the component's actual mobile declarations with Vue reactivity and transport stubs.
// No component mount, browser, HTTP request, or database is involved.
function harness(page = true) {
  const names: string[] = []
  const selected = ast.statements.filter((node) => {
    if (ts.isVariableStatement(node)) {
      const name = node.declarationList.declarations[0].name.getText(ast)
      if (
        /^(mobile|filteredMobile|scheduleMobile)/.test(name) ||
        ['approverPickerOpen', 'extractCustomerList', 'handleAddProduct'].includes(name)
      ) {
        names.push(name)
        return true
      }
    }
    if (ts.isFunctionDeclaration(node)) {
      const name = node.name?.text || ''
      if (/Mobile|^createMobile|^toggleApprover$/.test(name)) {
        names.push(name)
        return true
      }
    }
    return (
      ts.isExpressionStatement(node) &&
      /^(watch\(|onBeforeUnmount\(|useIntersectionObserver\()/.test(node.getText(ast)) &&
      /[mM]obile/.test(node.getText(ast))
    )
  })
  const timers = new Map<number, { fn: () => void; at: number }>()
  let now = 0
  let timerId = 0
  const setTimer = (fn: () => void, delay = 0) => {
    timers.set(++timerId, { fn, at: now + delay })
    return timerId
  }
  const clearTimer = (id: number) => timers.delete(id)
  const advance = async (ms: number) => {
    now += ms
    for (const [id, timer] of [...timers]) {
      if (timer.at > now) continue
      timers.delete(id)
      timer.fn()
    }
    for (let i = 0; i < 8; i++) await Promise.resolve()
  }
  const calls: Array<{ kind: string; query: any; request: ReturnType<typeof deferred> }> = []
  const transport = (kind: string) => (query: any) => {
    const request = deferred()
    calls.push({ kind, query, request })
    return request.promise
  }
  const cleanups: Array<() => void> = []
  const observers: Array<() => void> = []
  const confirmed: any[][] = []
  const bindings = {
    ref,
    computed,
    watch,
    setTimeout: setTimer,
    clearTimeout: clearTimer,
    onBeforeUnmount: (fn: () => void) => cleanups.push(fn),
    useIntersectionObserver: (_target: any, fn: any) =>
      observers.push(() => fn([{ isIntersecting: true }])),
    useDebounceFn: (fn: () => void, delay: number) => {
      let id: number
      return () => {
        clearTimer(id)
        id = setTimer(fn, delay)
      }
    },
    isPageVariant: ref(page),
    route: { fullPath: '/m/crm/quote/new' },
    contactOptionsRequest: 0,
    contactOptionsLoading: ref(false),
    contactOptionsError: ref(''),
    form: ref({ supplierId: 's1', customerId: 'c1', products: [] }),
    productSelectorVisible: ref(false),
    customerSelectorVisible: ref(false),
    opportunitySelectorVisible: ref(false),
    contactSelectorVisible: ref(false),
    contactOptions: ref([
      { id: 'c1', contactName: '张三', mobile: '13812345678' },
      { id: 'c2', contactName: '李四', mobile: '13987654321' }
    ]),
    submitForm: ref({ approverIds: ['u2', 'u1'] }),
    userList: ref([
      { userId: 'u1', nickName: '张三' },
      { userId: 'u2', nickName: '李四' }
    ]),
    formatApproverOptionLabel: (user: any) => user.nickName,
    fetchProductList: transport('product'),
    fetchCustomerList: transport('customer'),
    listOpportunity: transport('opportunity'),
    handleProductConfirm: (items: any[]) => confirmed.push(items),
    showFailToast: () => {},
    $modal: { msgWarning: () => {} },
    loadContactOptions: async () => {},
    handleContactConfirm: () => {},
    handleOpportunityConfirm: () => {},
    hasCustomerShortName: () => true,
    handleCustomerConfirm: async () => {}
  }
  const code = ts.transpile(selected.map((node) => node.getText(ast)).join('\n'), {
    target: ts.ScriptTarget.ESNext
  })
  const scope = effectScope()
  const api = scope.run(() =>
    new Function(...Object.keys(bindings), `${code}\nreturn { ${names.join(', ')} }`)(
      ...Object.values(bindings)
    )
  )
  return {
    ...bindings,
    ...api,
    calls,
    confirmed,
    observers,
    advance,
    async flush() {
      for (let i = 0; i < 8; i++) await Promise.resolve()
    },
    async debounce() {
      await advance(250)
    },
    dispose() {
      cleanups.forEach((fn) => fn())
      scope.stop()
    }
  }
}

const row = (id: string) => ({ id, productName: id, customerName: id, opportunityName: id })
const response = (ids: string[], total: number | string = ids.length) => ({
  data: { list: ids.map(row), total }
})

async function statusMarkup(kind: string, h: any) {
  let body: any
  const visit = (node: any) => {
    if (
      node.tag === 'div' &&
      node.children?.some(
        (child: any) =>
          child.tag === 'van-search' && child.loc.source.includes(`mobile${kind}Keyword`)
      )
    )
      body = node
    node.children?.forEach(visit)
  }
  visit(descriptor.template!.ast)
  assert.ok(body)
  const fragment = body.children
    .filter(
      (node: any) =>
        node.type === 1 &&
        !['van-search', 'van-cell', 'van-checkbox-group'].includes(node.tag) &&
        !node.props?.some((prop: any) => prop.type === 7 && prop.name === 'for')
    )
    .map((node: any) => node.loc.source)
    .join('\n')
  const compiled = compile(fragment, { isCustomElement: () => true })
  const bindings = proxyRefs(h)
  return renderToString(createSSRApp({ render: () => compiled.call(bindings, bindings, []) }))
}

test('product page two failure retries page two without skipping it', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.calls[0].request.resolve(response(['p1'], 50))
  await open
  const more = h.loadMoreMobileProducts()
  h.calls[1].request.reject(new Error('offline'))
  await more
  const retry = h.loadMoreMobileProducts()
  assert.equal(h.calls[2].query.page, 2)
  h.calls[2].request.resolve(response(['p2'], 50))
  await retry
  assert.deepEqual(
    h.mobileProductList.value.map((item: any) => item.id),
    ['p1', 'p2']
  )
  h.dispose()
})

test('typing invalidates the in-flight product request before the debounce fires', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.mobileProductKeyword.value = '乙'
  h.onMobileProductKeywordInput?.()
  h.calls[0].request.resolve(response(['stale']))
  await open
  assert.deepEqual(h.mobileProductList.value, [])
  await h.debounce()
  assert.equal(h.calls.at(-1).query.keyword, '乙')
  h.calls.at(-1).request.resolve(response(['new']))
  await h.flush()
  assert.equal(h.mobileProductList.value[0].id, 'new')
  h.dispose()
})

test('old product finally cannot clear loading after closing and reopening', async () => {
  const h = harness()
  const first = h.handleAddProduct()
  h.productSelectorVisible.value = false
  const second = h.handleAddProduct()
  h.calls[0].request.resolve(response(['stale']))
  await first
  assert.equal(h.mobileProductLoading.value, true)
  assert.deepEqual(h.mobileProductList.value, [])
  h.calls[1].request.resolve(response(['fresh']))
  await second
  h.productSelectorVisible.value = false
  const third = h.handleAddProduct()
  h.productSelectorVisible.value = false
  h.calls[2].request.resolve(response(['closed']))
  await third
  assert.deepEqual(h.mobileProductList.value, [])
  h.dispose()
})

test('cross-search product selection confirms cached objects in selection order', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.calls[0].request.resolve(response(['A']))
  await open
  h.toggleMobileProduct('A')
  h.mobileProductKeyword.value = 'B'
  const search = h.loadMobileProducts()
  h.calls.at(-1).request.resolve(response(['B']))
  await search
  h.toggleMobileProduct('B')
  h.confirmMobileProductPick()
  assert.deepEqual(
    h.confirmed[0].map((item: any) => item.id),
    ['A', 'B']
  )
  h.dispose()
})

test('supplier or customer changes prevent confirming products from the previous context', async () => {
  for (const key of ['supplierId', 'customerId']) {
    const h = harness()
    const open = h.handleAddProduct()
    h.calls[0].request.resolve(response(['A']))
    await open
    h.toggleMobileProduct('A')
    h.form.value[key] = 'changed'
    h.confirmMobileProductPick()
    assert.equal(h.confirmed.length, 0)
    assert.equal(h.productSelectorVisible.value, false)
    h.dispose()
  }
})

test('customer input and clear search automatically; old responses cannot overwrite newer results', async () => {
  const h = harness()
  const open = h.openMobileCustomer()
  h.calls[0].request.resolve(response(['initial']))
  await open
  h.mobileCustomerKeyword.value = '池州'
  await h.debounce()
  assert.equal(h.calls.length, 2)
  h.mobileCustomerKeyword.value = '国臣'
  await h.debounce()
  h.calls[2].request.resolve(response(['current']))
  await h.flush()
  h.calls[1].request.resolve(response(['old']))
  await h.flush()
  assert.deepEqual(
    h.mobileCustomerList.value.map((item: any) => item.id),
    ['current']
  )
  h.mobileCustomerKeyword.value = ''
  await h.debounce()
  assert.equal(h.calls[3].query.keyword, undefined)
  h.calls[3].request.resolve(response(['cleared']))
  await h.flush()
  h.dispose()
})

test('customer and opportunity matches beyond thirty remain reachable', async () => {
  for (const kind of ['Customer', 'Opportunity']) {
    const h = harness()
    const open = h[`openMobile${kind}`]()
    const rows = Array.from({ length: 30 }, (_, i) => row(String(i)))
    h.calls[0].request.resolve(
      kind === 'Customer' ? { data: { list: rows, total: '31' } } : { rows, total: '31' }
    )
    await open
    assert.equal(
      typeof h[`loadMoreMobile${kind === 'Customer' ? 'Customers' : 'Opportunities'}`],
      'function'
    )
    const more = h[`loadMoreMobile${kind === 'Customer' ? 'Customers' : 'Opportunities'}`]()
    assert.equal(h.calls[1].query.page ?? h.calls[1].query.pageNum, 2)
    h.calls[1].request.resolve(
      kind === 'Customer' ? response(['30'], 31) : { rows: [row('30')], total: 31 }
    )
    await more
    assert.equal(h[`mobile${kind}List`].value.length, 31)
    h.dispose()
  }
})

test('opportunity customer change discards the old response and queries the new customer', async () => {
  const h = harness()
  const open = h.openMobileOpportunity()
  h.form.value.customerId = 'c2'
  h.calls[0].request.resolve({ rows: [row('old')], total: 1 })
  await open
  assert.deepEqual(h.mobileOpportunityList.value, [])
  await h.debounce()
  assert.equal(h.calls[1].query.customerId, 'c2')
  h.calls[1].request.resolve({ rows: [row('new')], total: 1 })
  await h.flush()
  assert.equal(h.mobileOpportunityList.value[0].id, 'new')
  h.dispose()
})

test('unmount invalidates unresolved requests and scheduled searches', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.mobileProductKeyword.value = 'later'
  h.onMobileProductKeywordInput?.()
  h.dispose()
  h.calls[0].request.resolve(response(['unmounted']))
  await open
  await h.debounce()
  assert.deepEqual(h.mobileProductList.value, [])
  assert.equal(h.calls.length, 1)
})

test('mobile contact and approver filters search locally without changing selected order', () => {
  const h = harness()
  assert.ok(h.mobileContactKeyword)
  h.mobileContactKeyword.value = '8765'
  assert.deepEqual(
    h.filteredMobileContacts.value.map((item: any) => item.id),
    ['c2']
  )
  h.mobileContactKeyword.value = '张'
  assert.deepEqual(
    h.filteredMobileContacts.value.map((item: any) => item.id),
    ['c1']
  )
  h.mobileApproverKeyword.value = '张'
  assert.deepEqual(
    h.filteredMobileApprovers.value.map((item: any) => item.userId),
    ['u1']
  )
  assert.deepEqual(h.submitForm.value.approverIds, ['u2', 'u1'])
  h.dispose()
})

test('first-page errors expose retry and never masquerade as an empty result', async () => {
  for (const kind of ['Product', 'Customer', 'Opportunity']) {
    const h = harness()
    const open = kind === 'Product' ? h.handleAddProduct() : h[`openMobile${kind}`]()
    assert.doesNotMatch(await statusMarkup(kind, h), /暂无/)
    h.calls[0].request.reject(new Error('offline'))
    await open
    const markup = await statusMarkup(kind, h)
    assert.match(markup, /加载失败/)
    assert.match(markup, /重试/)
    assert.doesNotMatch(markup, /暂无/)
    h.dispose()
  }
})

test('load-more errors retain rows, expose a retry button, and stop automatic retries', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.calls[0].request.resolve(response(['A'], 40))
  await open
  const more = h.loadMoreMobileProducts()
  h.calls[1].request.reject(new Error('offline'))
  await more
  assert.deepEqual(
    h.mobileProductList.value.map((item: any) => item.id),
    ['A']
  )
  const markup = await statusMarkup('Product', h)
  assert.match(markup, /加载失败/)
  assert.match(markup, /重试加载更多/)
  h.observers[0]()
  assert.equal(h.calls.length, 2)
  h.dispose()
})

test('the explicit search action cancels a pending debounce request', async () => {
  const h = harness()
  const open = h.openMobileCustomer()
  h.calls[0].request.resolve(response(['A']))
  await open
  h.mobileCustomerKeyword.value = 'B'
  const search = h.loadMobileCustomers()
  h.calls[1].request.resolve(response(['B']))
  await search
  await h.debounce()
  assert.equal(h.calls.length, 2)
  h.dispose()
})

test('closing clears pending product choices without writing the form; reopening starts fresh', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.calls[0].request.resolve(response(['A']))
  await open
  h.onMobileProductSelectionChange(['A'])
  h.productSelectorVisible.value = false
  assert.deepEqual(h.form.value.products, [])
  assert.equal(h.confirmed.length, 0)
  const reopen = h.handleAddProduct()
  h.calls[1].request.resolve(response(['A']))
  await reopen
  assert.deepEqual(h.mobileProductSelectedIds.value, [])
  h.dispose()
})

test('desktop supplier changes and selector visibility never trigger mobile transport or cleanup', async () => {
  const h = harness(false)
  await h.handleAddProduct()
  assert.equal(h.productSelectorVisible.value, true)
  h.form.value.supplierId = 's2'
  h.form.value.customerId = 'c2'
  h.customerSelectorVisible.value = true
  h.opportunitySelectorVisible.value = true
  h.mobileCustomerKeyword.value = 'A'
  await h.debounce()
  assert.equal(h.productSelectorVisible.value, true)
  assert.equal(h.calls.length, 0)
  h.dispose()
})

test('all remote pickers debounce typing for 250 ms and keep their original filters', async () => {
  for (const kind of ['Product', 'Customer', 'Opportunity']) {
    const h = harness()
    const open = kind === 'Product' ? h.handleAddProduct() : h[`openMobile${kind}`]()
    h.calls[0].request.resolve(response(['A']))
    await open
    h[`mobile${kind}Keyword`].value = '  查询  '
    await h.advance(249)
    assert.equal(h.calls.length, 1)
    await h.advance(1)
    assert.equal(h.calls.length, 2)
    assert.equal(h.calls[1].query.keyword, '查询')
    if (kind === 'Product') {
      assert.deepEqual(h.calls[1].query, {
        page: 1,
        pageSize: 20,
        status: 'on',
        keyword: '查询',
        matchProductNo: false,
        matchModel: true,
        supplierId: 's1'
      })
    } else if (kind === 'Opportunity') {
      assert.equal(h.calls[1].query.customerId, 'c1')
    }
    h.calls[1].request.resolve(response(['B']))
    await h.flush()
    h.dispose()
  }
})

test('customer and opportunity closing/reopening discard old success and error responses', async () => {
  for (const kind of ['Customer', 'Opportunity']) {
    const h = harness()
    const visible = h[`${kind.toLowerCase()}SelectorVisible`]
    const first = h[`openMobile${kind}`]()
    visible.value = false
    const second = h[`openMobile${kind}`]()
    h.calls[0].request.reject(new Error('stale failure'))
    await first
    assert.equal(h[`mobile${kind}Loading`].value, true)
    assert.equal(h[`mobile${kind}Error`].value, '')
    h.calls[1].request.resolve(response(['fresh']))
    await second
    visible.value = false
    const third = h[`openMobile${kind}`]()
    visible.value = false
    h.calls[2].request.resolve(response(['closed']))
    await third
    assert.deepEqual(h[`mobile${kind}List`].value, [])
    h.dispose()
  }
})

test('product checkbox changes preserve cached selection across pages and deselection order', async () => {
  const h = harness()
  const open = h.handleAddProduct()
  h.calls[0].request.resolve(response(['A'], 40))
  await open
  h.onMobileProductSelectionChange(['A'])
  const more = h.loadMoreMobileProducts()
  h.calls[1].request.resolve(response(['B'], 40))
  await more
  h.onMobileProductSelectionChange(['A', 'B'])
  h.onMobileProductSelectionChange(['B'])
  h.onMobileProductSelectionChange(['B', 'A'])
  h.confirmMobileProductPick()
  assert.deepEqual(
    h.confirmed[0].map((item: any) => item.id),
    ['B', 'A']
  )
  h.dispose()
})