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

import {
  ASSISTANT_SCOPE_ACTION_FILL_COMPOSER
} from '../src/utils/assistantSessionScope.js'
import {
  mergeComposerPrefill,
  resolveSuggestedActionPrefill
} from '../src/utils/assistantSuggestedActionPrefill.js'

test('suggested action prefill uses backend prompt payload', () => {
  assert.equal(
    resolveSuggestedActionPrefill({
      action_type: 'prefill_composer',
      payload: {
        application_field: 'time',
        prompt_prefill: '申请时间段：'
      }
    }),
    '申请时间段：'
  )
})

test('suggested action prefill falls back to application field templates', () => {
  assert.equal(
    resolveSuggestedActionPrefill({
      action_type: 'prefill_composer',
      payload: { application_field: 'amount' }
    }),
    '用户预估费用：'
  )
  assert.equal(
    resolveSuggestedActionPrefill({
      action_type: 'ask_clarification',
      payload: { application_field: 'amount' }
    }),
    ''
  )
})

test('composer prefill appends to existing draft without duplication', () => {
  assert.equal(mergeComposerPrefill('', '事由：'), '事由：')
  assert.equal(mergeComposerPrefill('地点：上海', '事由：'), '地点：上海\n事由：')
  assert.equal(mergeComposerPrefill('地点：上海\n事由：', '事由：'), '地点：上海\n事由：')
})

test('fill_composer action resolves payload.fill_text as prefill', () => {
  assert.equal(
    resolveSuggestedActionPrefill({
      action_type: ASSISTANT_SCOPE_ACTION_FILL_COMPOSER,
      payload: { fill_text: '我想要申请明天去北京出差3天' }
    }),
    '我想要申请明天去北京出差3天'
  )
})

test('fill_composer action without fill_text falls back to empty (no application_field lookup)', () => {
  assert.equal(
    resolveSuggestedActionPrefill({
      action_type: ASSISTANT_SCOPE_ACTION_FILL_COMPOSER,
      payload: {}
    }),
    ''
  )
})