import assert from 'node:assert/strict'
import { readFileSync } from 'node:fs'
import test from 'node:test'
import { parse } from '@vue/compiler-sfc'
import ts from 'typescript'
const source = parse(
  readFileSync(new URL('../src/views/m/crm/product/categories.vue', import.meta.url), 'utf8')
).descriptor.scriptSetup!.content
const ast = ts.createSourceFile('category.ts', source, ts.ScriptTarget.Latest, true)
function harness(fetchCategoryTree: (...args: any[]) => Promise<any>) {
  const names = ['loadTree', 'getCategoryTreeSelect', 'openAdd', 'resetForm']
  const code = ast.statements
    .filter((n) => ts.isFunctionDeclaration(n) && names.includes(n.name!.text))
    .map((n) => n.getText(ast))
    .join('\n')
  const state: Record<string, any> = {
    fetchCategoryTree,
    keyword: { value: '  酸  ' },
    loading: { value: false },
    loadError: { value: '' },
    tree: { value: [] },
    expandedIds: { value: {} },
    collectExpandIds: () => ({}),
    categoryTreeOptions: { value: [] },
    actionOpen: { value: false },
    formOpen: { value: false },
    formTitle: { value: '' },
    formData: {},
    nameError: { value: '' },
    showFailToast: (message: string) => state.toasts.push(message),
    toasts: []
  }
  const handlers = new Function(
    ...Object.keys(state),
    'let loadSeq = 0;\n' + ts.transpile(code) + ';return {loadTree,openAdd}'
  )(...Object.values(state))
  return { ...state, ...handlers }
}
test('category search trims query, reports errors, and retries successfully', async () => {
  let fail = true
  const calls: any[] = []
  const h = harness(async (params) => {
    calls.push(params)
    if (fail) throw new Error('网络中断')
    return { data: [{ id: 'a', categoryName: '酸' }] }
  })
  await h.loadTree()
  assert.equal(h.loadError.value, '网络中断')
  assert.equal(h.loading.value, false)
  fail = false
  await h.loadTree()
  assert.deepEqual(calls, [{ categoryName: '酸' }, { categoryName: '酸' }])
  assert.equal(h.loadError.value, '')
  assert.equal(h.tree.value[0].id, 'a')
})
test('an earlier category response cannot replace the latest search', async () => {
  const resolve: ((value: any) => void)[] = []
  const h = harness(() => new Promise((r) => resolve.push(r)))
  const first = h.loadTree()
  h.keyword.value = '碱'
  const second = h.loadTree()
  resolve[1]({ data: [{ id: 'new' }] })
  await second
  resolve[0]({ data: [{ id: 'old' }] })
  await first
  assert.equal(h.tree.value[0].id, 'new')
})
test('failed parent-option loading keeps the category form closed and explains retry', async () => {
  const h = harness(async () => {
    throw new Error('分类加载失败')
  })
  await h.openAdd()
  assert.equal(h.formOpen.value, false)
  assert.deepEqual(h.toasts, ['分类加载失败'])
})