import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
import { setActivePinia, createPinia } from 'pinia'
import { useSuggestionsStore } from '../src/stores/suggestions.js'

vi.mock('../src/utils/toast.js', () => ({ toast: vi.fn() }))

function stubFetch(handler) {
  globalThis.fetch = vi.fn(async (url, init) => {
    const { status, body } = handler(url, init)
    return {
      ok: status >= 200 && status < 300,
      status,
      statusText: String(status),
      text: async () => (body == null ? '' : JSON.stringify(body)),
    }
  })
}

const sugg = (over = {}) => ({
  canonical_tag_id: 7,
  display_name: 'Ichigo',
  category: 'character',
  score: 0.9,
  source: 'head',
  creates_new_tag: false,
  rejected: false,
  ...over,
})

// Seed the store through its own load/loadAll so currentImageId is set the
// way the panel sets it (accept() derives the image from it).
async function seed(store, byCategory) {
  stubFetch(() => ({ status: 200, body: { by_category: byCategory } }))
  await store.load(1)
  await store.loadAll(1)
}

describe('suggestions store: findPending (manual add == accept, 2026-07-03)', () => {
  beforeEach(() => setActivePinia(createPinia()))
  afterEach(() => vi.restoreAllMocks())

  it('matches by canonical tag id', async () => {
    const s = useSuggestionsStore()
    await seed(s, { character: [sugg()] })
    expect(s.findPending('general', 'unrelated', 7)?.display_name).toBe('Ichigo')
  })

  it('matches raw suggestions by kind + name, case-insensitively', async () => {
    const s = useSuggestionsStore()
    await seed(s, {
      general: [sugg({
        canonical_tag_id: null, display_name: 'Holding Sword',
        category: 'general', creates_new_tag: true,
      })],
    })
    expect(s.findPending('general', 'holding sword')).toBeTruthy()
    // Kind must match: same name under another kind is a different tag.
    expect(s.findPending('character', 'holding sword')).toBeNull()
  })

  it('skips rejected rows and returns null when nothing matches', async () => {
    const s = useSuggestionsStore()
    await seed(s, { character: [sugg({ rejected: true })] })
    expect(s.findPending('character', 'Ichigo', 7)).toBeNull()
    expect(s.findPending('character', 'Rukia')).toBeNull()
  })
})

describe('suggestions store: accept with a known tag id', () => {
  beforeEach(() => setActivePinia(createPinia()))
  afterEach(() => vi.restoreAllMocks())

  it('POSTs only the accept endpoint (no tag create) and drops the row', async () => {
    const s = useSuggestionsStore()
    await seed(s, { character: [sugg()] })
    const calls = []
    stubFetch((url, init) => {
      calls.push({ url, method: init?.method })
      return { status: 200, body: { accepted: true, tag_id: 7 } }
    })
    await s.accept(s.byCategory.character[0], { tagId: 7 })
    expect(calls).toHaveLength(1)
    expect(calls[0].url).toContain('/api/images/1/suggestions/accept')
    expect(s.byCategory.character).toHaveLength(0)
    expect(s.allByCategory.character).toHaveLength(0)
  })

  it('a RAW suggestion accepted with a known tagId skips create AND still drops its row', async () => {
    // TagPanel's manual-create path: the tag was just created by
    // host.createAndAdd, so accept must not create again — and the drop must
    // key off the original raw suggestion object, not the resolved id
    // (regression: spreading canonical_tag_id onto the suggestion changed its
    // identity key and left the panel row behind).
    const s = useSuggestionsStore()
    const raw = sugg({
      canonical_tag_id: null, display_name: 'Holding Sword',
      category: 'general', creates_new_tag: true,
    })
    await seed(s, { general: [raw] })
    const calls = []
    stubFetch((url, init) => {
      calls.push({ url, body: init?.body })
      return { status: 200, body: { accepted: true, tag_id: 42 } }
    })
    await s.accept(s.byCategory.general[0], { tagId: 42 })
    expect(calls).toHaveLength(1)
    expect(calls[0].url).toContain('/api/images/1/suggestions/accept')
    expect(JSON.parse(calls[0].body)).toEqual({ tag_id: 42 })
    expect(s.byCategory.general).toHaveLength(0)
    expect(s.allByCategory.general).toHaveLength(0)
  })
})