import assert from 'node:assert/strict'
import test from 'node:test'

import {
  deleteAiWorkbenchConversation,
  loadAiWorkbenchConversationHistory,
  saveAiWorkbenchConversation
} from '../src/utils/aiWorkbenchConversationStore.js'

function installLocalStorageMock() {
  const store = new Map()
  globalThis.window = {
    localStorage: {
      getItem(key) {
        return store.has(key) ? store.get(key) : null
      },
      setItem(key, value) {
        store.set(key, String(value))
      },
      removeItem(key) {
        store.delete(key)
      },
      clear() {
        store.clear()
      }
    }
  }
  return store
}

test('AI workbench conversation store persists scoped history for sidebar sessions', () => {
  installLocalStorageMock()
  const user = { username: 'caoxiaozhu', email: 'caoxiaozhu@xf.com', name: '曹笑竹' }
  const anotherUser = { username: 'budget-user' }

  saveAiWorkbenchConversation(user, {
    id: 'conv-first',
    title: '',
    updatedAt: Date.now() - 3000,
    messages: [
      { id: 'u1', role: 'user', content: '帮我核对差旅报销口径' },
      { id: 'a1', role: 'assistant', content: '我会根据制度和票据要求继续核对。' }
    ]
  })
  saveAiWorkbenchConversation(user, {
    id: 'conv-second',
    title: '预算占用分析',
    updatedAt: Date.now(),
    stewardState: { intent: 'budget_check' },
    messages: [
      { id: 'u2', role: 'user', content: '分析本月预算占用' },
      { id: 'a2', role: 'assistant', content: '本月预算占用需要结合部门额度和已提交单据。' }
    ]
  })

  const history = loadAiWorkbenchConversationHistory(user)
  assert.equal(history.length, 2)
  assert.equal(history[0].id, 'conv-second')
  assert.equal(history[0].title, '预算占用分析')
  assert.equal(history[0].stewardState.intent, 'budget_check')
  assert.equal(history[1].title, '帮我核对差旅报销口径')
  assert.equal(history[1].prompt, '帮我核对差旅报销口径')
  assert.ok(history[0].time)
  assert.deepEqual(loadAiWorkbenchConversationHistory(anotherUser), [])

  const nextHistory = deleteAiWorkbenchConversation(user, 'conv-second')
  assert.equal(nextHistory.length, 1)
  assert.equal(nextHistory[0].id, 'conv-first')
})

test('AI workbench conversation store preserves stewardRemainingTasks on messages', () => {
  installLocalStorageMock()
  const user = { username: 'caoxiaozhu' }
  const remainingTasks = [
    { task_id: 't2', task_type: 'reimbursement', ontology_fields: { expense_type: 'meal' } }
  ]

  saveAiWorkbenchConversation(user, {
    id: 'conv-multi-task',
    title: '出差+招待费',
    updatedAt: Date.now(),
    messages: [
      { id: 'u1', role: 'user', content: '出差+报销招待费' },
      {
        id: 'a1',
        role: 'assistant',
        content: '申请草稿已保存',
        stewardRemainingTasks: remainingTasks
      }
    ]
  })

  const history = loadAiWorkbenchConversationHistory(user)
  assert.equal(history.length, 1)
  // 历史摘要不要求保留 stewardRemainingTasks,但加载完整会话时消息上应保留。
  // 这里通过 saveAiWorkbenchConversation 的往返确认 normalizeMessage 不会丢弃该字段。
  const stored = JSON.parse(globalThis.window.localStorage.getItem(
    'x-financial:workbench-ai-conversations:caoxiaozhu'
  ))
  const conversation = stored.find((item) => item.id === 'conv-multi-task')
  const persistedMessage = conversation.messages.find((m) => m.id === 'a1')
  assert.deepEqual(persistedMessage.stewardRemainingTasks, remainingTasks)
})