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'
import * as vue from 'vue'
import * as model from '../src/views/pl/quota-cert/model'
import { useClientColumnFilters } from '../src/composables/useClientColumnFilters'
import { usePersistedListColumns } from '../src/composables/usePersistedListColumns'

function deferred() {
  let resolve!: (value: any) => void
  const promise = new Promise<any>((r) => {
    resolve = r
  })
  return { promise, resolve }
}
function harness() {
  const reads: string[] = [],
    writes: any[] = [],
    parses: any[] = [],
    messages: string[] = []
  let confirmSwitch = true
  let pendingOptions: ReturnType<typeof deferred> | undefined
  const env = {
    ...Object.fromEntries(
      Object.entries(vue).filter(([key]) => /^[a-zA-Z_$][\w$]*$/.test(key) && key !== 'default')
    ),
    ...model,
    useClientColumnFilters,
    usePersistedListColumns,
    useListTableViewportHeight: () => ({ tableHeight: vue.ref(400) }),
    useRoute: () => ({ query: {} }),
    useUserStore: () => ({ accessToken: 'synthetic', getUserInfo: {} }),
    onMounted: () => {},
    onBeforeUnmount: () => {},
    fetchGetMenuCodes: async () => ({ all: true }),
    ElMessage: {
      warning: (s: string) => messages.push(s),
      success: (s: string) => messages.push(s)
    },
    ElMessageBox: {
      confirm: async () => {
        if (!confirmSwitch) throw new Error('cancel')
      }
    },
    quotaCertApi: {
      list: async (kind: string) => {
        reads.push(kind)
        return pendingOptions ? pendingOptions.promise : []
      },
      get: async (kind: string, id: string) => ({
        ...model.newCert(kind as any),
        id,
        certNo: 'EXISTING',
        attachmentUrls: 'a.png,b.png'
      }),
      save: async (kind: string, body: any, id?: string) => {
        writes.push({ kind, body, id })
      },
      recognize: (kind: string, url: string) => {
        const pending = deferred()
        parses.push({ kind, url, ...pending })
        return pending.promise
      }
    }
  }
  const script = parse(
    readFileSync(new URL('../src/views/pl/quota-cert/index.vue', import.meta.url), 'utf8')
  ).descriptor.scriptSetup!.content
  const source = ts.createSourceFile('page.ts', script, ts.ScriptTarget.Latest, true)
  const statements = source.statements.filter((s) => !ts.isImportDeclaration(s))
  const names = statements.flatMap((s) =>
    ts.isVariableStatement(s)
      ? s.declarationList.declarations
          .filter((d) => ts.isIdentifier(d.name))
          .map((d) => d.name.getText(source))
      : ts.isFunctionDeclaration(s) && s.name
        ? [s.name.text]
        : []
  )
  const code = ts.transpile(statements.map((s) => s.getText(source)).join('\n'), {
    target: ts.ScriptTarget.ESNext
  })
  const scope = vue.effectScope()
  const state = scope.run(() =>
    new Function(...Object.keys(env), `${code}; return {${names.join(',')}}`)(...Object.values(env))
  )
  state.formRef.value = { validate: async () => true, clearValidate: () => {} }
  return {
    state,
    reads,
    writes,
    parses,
    messages,
    deferOptions: () => {
      pendingOptions = deferred()
      return pendingOptions
    },
    cancelSwitch: () => {
      confirmSwitch = false
    },
    stop: () => scope.stop()
  }
}

test('type changes immediately while options load and stale options cannot enter a later form', async () => {
  const h = harness(),
    s = h.state
  try {
    await s.edit()
    const options = h.deferOptions()
    const switching = s.changeFormKind('transport')
    assert.equal(s.formKind.value, 'transport')
    await s.changeFormKind('purchase')
    options.resolve([{ id: 'old-option' }])
    await switching
    assert.equal(s.formKind.value, 'purchase')
    assert.deepEqual(s.purchases.value, [])
  } finally {
    h.stop()
  }
})

test('new form type changes without closing dialog or changing the list, and drives save', async () => {
  const h = harness(),
    s = h.state
  try {
    await s.edit()
    assert.equal(s.formKind?.value, 'purchase')
    await s.changeFormKind('transport')
    assert.equal(s.formKind.value, 'transport')
    assert.equal(s.kind.value, 'purchase')
    assert.equal(s.formVisible.value, true)
    assert.ok(s.formFields.value.some(([key]: string[]) => key === 'shipperName'))
    assert.ok(!s.formFields.value.some(([key]: string[]) => key === 'buyerName'))
    s.form.value.shipperName = '合成托运单位'
    await s.save()
    assert.equal(h.writes[0].kind, 'transport')
    assert.equal(h.writes[0].body.shipperName, '合成托运单位')
    assert.equal(h.writes[0].body.buyerName, undefined)
    assert.equal(s.kind.value, 'transport')
  } finally {
    h.stop()
  }
})

test('switch clears old certificate data after confirmation, preserving attachments and mode', async () => {
  const h = harness(),
    s = h.state
  try {
    await s.edit()
    s.form.value.certNo = 'PURCHASE-1'
    s.form.value.entryMode = 'image_parse'
    s.form.value.attachmentUrls = 'one.png'
    s.form.value.remark = '保留备注'
    await s.changeFormKind('transport')
    assert.equal(s.form.value.certNo, '')
    assert.equal(s.form.value.attachmentUrls, 'one.png')
    assert.equal(s.form.value.entryMode, 'image_parse')
    assert.equal(s.form.value.remark, '保留备注')
    assert.equal(s.form.value.buyerName, undefined)
  } finally {
    h.stop()
  }
})

test('cancel type switch and existing certificate edit preserve data and original type', async () => {
  const h = harness(),
    s = h.state
  try {
    await s.edit()
    s.form.value.certNo = 'KEEP'
    h.cancelSwitch()
    s.selectedFormKind.value = 'transport'
    await s.changeFormKind('transport')
    assert.equal(s.formKind.value, 'purchase')
    assert.equal(s.selectedFormKind.value, 'purchase')
    assert.equal(s.form.value.certNo, 'KEEP')
    await s.edit({ id: 'existing' })
    await s.changeFormKind('transport')
    assert.equal(s.formKind.value, 'purchase')
    assert.equal(s.form.value.attachmentUrls, 'a.png,b.png')
  } finally {
    h.stop()
  }
})

test('single attachment is automatically selected, parsing uses form type and preserves manual edits', async () => {
  const h = harness(),
    s = h.state
  try {
    await s.edit()
    await s.changeFormKind('transport')
    s.form.value.attachmentUrls = 'one.png'
    await vue.nextTick()
    assert.equal(s.recognitionImage.value, 'one.png')
    s.form.value.certNo = 'MANUAL'
    s.edited.add('certNo')
    const parsing = s.recognize()
    assert.equal(h.parses.length, 1)
    assert.equal(h.parses[0].kind, 'transport')
    assert.equal(h.parses[0].url, 'one.png')
    h.parses[0].resolve({
      candidates: { certNo: 'OCR', shipperName: '合成托运单位' },
      invalidFields: {}
    })
    await parsing
    assert.equal(s.form.value.certNo, 'MANUAL')
    assert.equal(s.form.value.shipperName, '合成托运单位')
  } finally {
    h.stop()
  }
})

test('missing, removed, multiple new attachments and uploads in progress never start parsing', async () => {
  const h = harness(),
    s = h.state
  try {
    await s.edit()
    const empty = s.recognize()
    assert.equal(h.parses.length, 0)
    await empty
    s.form.value.attachmentUrls = 'one.png'
    await vue.nextTick()
    s.form.value.attachmentUrls = ''
    await vue.nextTick()
    assert.equal(s.recognitionImage.value, '')
    await s.recognize()
    s.form.value.attachmentUrls = 'one.png,two.png'
    s.recognitionImage.value = 'one.png'
    await s.recognize()
    s.form.value.attachmentUrls = 'one.png'
    s.certAttachments.value = { hasUploading: () => true }
    await s.recognize()
    assert.equal(h.parses.length, 0)
    await s.save()
    assert.equal(h.writes.length, 0)
  } finally {
    h.stop()
  }
})

test('closed or switched forms reject delayed recognition results', async () => {
  for (const action of ['close', 'switch']) {
    const h = harness(),
      s = h.state
    try {
      await s.edit()
      s.form.value.attachmentUrls = 'one.png'
      await vue.nextTick()
      const parsing = s.recognize()
      assert.equal(h.parses.length, 1)
      if (action === 'close') {
        s.formVisible.value = false
        await s.edit()
      } else await s.changeFormKind('transport')
      h.parses[0].resolve({ candidates: { certNo: 'OLD' }, invalidFields: {} })
      await parsing
      assert.equal(s.form.value.certNo, '')
      assert.equal(s.recognizing.value, false)
    } finally {
      h.stop()
    }
  }
})