import { describe, expect, it } from 'vitest'
import {
  assertDeckHasSubstance,
  isSlideBodyEmpty,
  listEmptyBodySlides,
  normalizeSlideDeck,
} from '@/lib/ai/services/slide-content-quality'

describe('slide deck substance gate', () => {
  it('detects title-only body slides (the bug that shipped empty decks)', () => {
    const emptyBullets = { type: 'bullets', title: 'Contexte marché', items: [] }
    expect(isSlideBodyEmpty(emptyBullets)).toBe(true)

    const withItems = {
      type: 'bullets',
      title: 'Les délais ont doublé',
      items: ['Lead time 12→24 jours', 'Priorités instables en sprint'],
    }
    expect(isSlideBodyEmpty(withItems)).toBe(false)
  })

  it('rejects decks that only have titles', () => {
    const bad = normalizeSlideDeck({
      title: 'Test',
      slides: [
        { type: 'title', title: 'Test' },
        { type: 'bullets', title: 'Point A', items: [] },
        { type: 'bullets', title: 'Point B' },
        { type: 'summary', title: 'Fin', items: [] },
      ],
    })
    const gate = assertDeckHasSubstance(bad)
    expect(gate.ok).toBe(false)
    if (!gate.ok) {
      expect(gate.emptyIndexes.length).toBeGreaterThan(0)
    }
  })

  it('accepts a minimal solid deck', () => {
    const good = normalizeSlideDeck({
      title: 'Accélérer la livraison',
      slides: [
        {
          type: 'title',
          title: 'Accélérer la livraison',
          subtitle: 'Trois leviers en 90 jours',
        },
        {
          type: 'bullets',
          title: 'Les délais ont doublé faute de priorisation',
          items: [
            'Lead time passé de 12 à 24 jours',
            '40% des tickets changent de priorité en sprint',
            'Dépendances inter-équipes bloquent 1 livraison sur 3',
          ],
        },
        {
          type: 'cards',
          title: 'Trois leviers actionnables',
          cards: [
            { title: 'WIP limit', description: 'Max 2 items en cours par personne' },
            { title: 'Backlog unique', description: 'Un seul ordre partagé produit/tech' },
          ],
        },
        {
          type: 'summary',
          title: 'Prochaines décisions',
          items: [
            'Valider WIP limit cette semaine',
            'Fusionner les backlogs sous 10 jours',
          ],
        },
      ],
    })
    const gate = assertDeckHasSubstance(good)
    expect(gate.ok).toBe(true)
    expect(listEmptyBodySlides(good.slides)).toEqual([])
  })

  it('flags empty charts and empty stats as empty bodies', () => {
    expect(isSlideBodyEmpty({ type: 'chart', title: 'KPI', data: [] })).toBe(true)
    expect(
      isSlideBodyEmpty({
        type: 'chart',
        title: 'KPI',
        data: [
          { label: 'Q1', value: 10 },
          { label: 'Q2', value: 20 },
        ],
      }),
    ).toBe(false)
    expect(isSlideBodyEmpty({ type: 'stats', title: 'Chiffres', stats: [] })).toBe(true)
  })
})