import { describe, test, expect } from 'vitest'
import {
  getItemAnalyticsMetadata,
  type MeilisearchAutocompleteItem,
} from '../analytics.js'
import type { MeilisearchSearchMetadata } from '@meilisearch/instant-meilisearch'

describe('getItemAnalyticsMetadata', () => {
  test('returns metadata when present on item', () => {
    const metadata: MeilisearchSearchMetadata = {
      queryUid: '0199a41a-8186-70b3-b6e1-90e8cb582f35',
      indexUid: 'movies',
      primaryKey: 'id',
    }

    const item: MeilisearchAutocompleteItem = {
      id: '1',
      title: 'Test Movie',
      _meilisearch: { metadata },
    }

    const result = getItemAnalyticsMetadata(item)
    expect(result).toEqual(metadata)
  })

  test('returns undefined when metadata is missing', () => {
    const item: MeilisearchAutocompleteItem = {
      id: '1',
      title: 'Test Movie',
    }

    const result = getItemAnalyticsMetadata(item)
    expect(result).toBeUndefined()
  })

  test('returns undefined when _meilisearch is present but metadata is missing', () => {
    const item: MeilisearchAutocompleteItem = {
      id: '1',
      title: 'Test Movie',
      _meilisearch: {},
    }

    const result = getItemAnalyticsMetadata(item)
    expect(result).toBeUndefined()
  })

  test('preserves typed item fields when using generic parameter', () => {
    interface MovieHit {
      id: string
      title: string
      year: number
      director: string
    }

    const metadata: MeilisearchSearchMetadata = {
      queryUid: '0199a41a-8186-70b3-b6e1-90e8cb582f35',
      indexUid: 'movies',
      primaryKey: 'id',
    }

    const item: MeilisearchAutocompleteItem<MovieHit> = {
      id: '1',
      title: 'Test Movie',
      year: 2024,
      director: 'Test Director',
      objectID: '1',
      __position: 0,
      _meilisearch: { metadata },
    }

    // Verify the typed fields are accessible
    expect(item.id).toBe('1')
    expect(item.title).toBe('Test Movie')
    expect(item.year).toBe(2024)
    expect(item.director).toBe('Test Director')

    // Verify analytics fields are present
    expect(item.objectID).toBe('1')
    expect(item.__position).toBe(0)

    // Verify metadata extraction works
    const result = getItemAnalyticsMetadata(item)
    expect(result).toEqual(metadata)
  })
})