import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
import { defineComponent, h, ref } from 'vue'
import { mountWithVuexy } from '../utils/mountWithVuexy'
import { apiClient } from '@/lib/axios'
import { useTimetableMutations } from '@/composables/api/useTimetableMutations'
import { type Performance } from '@/types/timetable'

/**
 * Full add → move → resize → park → delete lifecycle, exercised through
 * the mutation composable + TanStack cache to validate the wire format
 * and cache transitions end-to-end.
 *
 * Why not the full page: mounting events/[id]/timetable/index.vue in
 * jsdom requires EventTabsNav, useEventDetail, useEventChildren, all
 * VTabs/VBtn/VDialog teleports — too fragile to be load-bearing in CI.
 * That's exactly the gap TEST-INFRA-001 fills with Playwright CT.
 *
 * What this test guarantees:
 *   - POST /performances + Idempotency-Key on add
 *   - POST /timetable/move with the right payload on drag
 *   - POST /timetable/move with stage_id=null on park
 *   - cascaded[] sibling appears in the resolved Promise on a cascade
 *   - DELETE /performances/{id} on delete
 *   - the mutation composable's cache patching keeps the day cache and
 *     wachtrij cache in sync across the whole flow
 */

vi.mock('@/lib/axios', () => {
  const post = vi.fn()
  const put = vi.fn()
  const get = vi.fn()
  const del = vi.fn()

  return { apiClient: { post, put, get, delete: del } }
})

interface MockApi {
  post: ReturnType<typeof vi.fn>
  put: ReturnType<typeof vi.fn>
  get: ReturnType<typeof vi.fn>
  delete: ReturnType<typeof vi.fn>
}
const mocked = apiClient as unknown as MockApi

function perf(overrides: Partial<Performance> = {}): Performance {
  // Engagement intentionally omitted — the Zod schema treats it as optional
  // and a partial object would fail parse. Tests that care about engagement
  // fields hand in a fully-shaped one via overrides.
  return {
    id: 'p1',
    engagement_id: 'e1',
    event_id: 'ev_1',
    stage_id: 's1',
    lane: 0,
    lane_resolved: 0,
    start_at: '2026-07-10T18:00:00.000Z',
    end_at: '2026-07-10T19:00:00.000Z',
    version: 1,
    notes: null,
    warnings: [],
    created_at: '2026-07-10T18:00:00.000Z',
    updated_at: '2026-07-10T18:00:00.000Z',
    deleted_at: null,
    ...overrides,
  }
}

interface ExposedShape {
  api: ReturnType<typeof useTimetableMutations>
}

function mountFlow() {
  const Host = defineComponent({
    setup(_, { expose }) {
      const api = useTimetableMutations({
        orgId: ref('org_1'),
        eventId: ref('ev_1'),
        dayId: ref<string | null>('day_1'),
      })

      expose({ api })

      return () => h('div')
    },
  })

  return mountWithVuexy(Host)
}

function getApi(wrapper: { vm: object }): ReturnType<typeof useTimetableMutations> {
  return (wrapper.vm as { $: { exposed: ExposedShape } }).$.exposed.api
}

describe('Integration flow: add → drag → resize → park → delete', () => {
  beforeEach(() => vi.clearAllMocks())
  afterEach(() => vi.clearAllMocks())

  it('walks a single performance through the entire RFC D17 lifecycle', async () => {
    const { wrapper } = mountFlow()
    const api = getApi(wrapper)

    // ─── Step 1: ADD a new performance ──────────────────────────────────
    mocked.post.mockResolvedValueOnce({
      data: { success: true, data: perf({ id: 'p1', version: 1 }) },
    })

    const created = await api.create.mutateAsync({
      engagement_id: 'e1',
      event_id: 'day_1',
      stage_id: 's1',
      start_at: '2026-07-10 18:00:00',
      end_at: '2026-07-10 19:00:00',
      lane: 0,
      notes: null,
    })

    expect(created.id).toBe('p1')
    expect(mocked.post).toHaveBeenCalledTimes(1)
    expect(mocked.post.mock.calls[0][0]).toContain('/events/ev_1/performances')
    expect(mocked.post.mock.calls[0][2]?.headers?.['Idempotency-Key']).toBeTruthy()

    // ─── Step 2: DRAG the new block to a different lane ────────────────
    // Simulate a cascaded peer (p2) whose lane bumps from 0 → 1 in the same
    // server transaction (RFC D18).
    mocked.post.mockResolvedValueOnce({
      data: {
        success: true,
        data: {
          moved: perf({ id: 'p1', lane: 1, lane_resolved: 1, version: 2 }),
          cascaded: [perf({ id: 'p2', lane: 2, lane_resolved: 2, version: 3 })],
        },
      },
    })

    const moveResult = await api.move.mutateAsync({
      payload: {
        performance_id: 'p1',
        target_stage_id: 's1',
        target_start_at: '2026-07-10 18:00:00',
        target_end_at: '2026-07-10 19:00:00',
        target_lane: 1,
        version: 1,
      },
      idempotencyKey: 'idem-drag-1',
      optimistic: perf({ lane: 1, lane_resolved: 1 }),
    })

    expect(moveResult.moved.lane_resolved).toBe(1)
    expect(moveResult.cascaded).toHaveLength(1)
    expect(moveResult.cascaded[0].id).toBe('p2')
    expect(mocked.post.mock.calls[1][0]).toContain('/timetable/move')
    expect(mocked.post.mock.calls[1][2]?.headers?.['Idempotency-Key']).toBe('idem-drag-1')

    // ─── Step 3: RESIZE — extend end_at by 30 min via update ──────────
    // Resize is implemented as another move(): the prototype audit §4.2
    // and our useTimetableMutations both route placement edits through
    // POST /timetable/move so the version bumps + cascade re-runs.
    mocked.post.mockResolvedValueOnce({
      data: {
        success: true,
        data: {
          moved: perf({ id: 'p1', lane: 1, lane_resolved: 1, end_at: '2026-07-10T19:30:00.000Z', version: 3 }),
          cascaded: [],
        },
      },
    })

    const resizeResult = await api.move.mutateAsync({
      payload: {
        performance_id: 'p1',
        target_stage_id: 's1',
        target_start_at: '2026-07-10 18:00:00',
        target_end_at: '2026-07-10 19:30:00',
        target_lane: 1,
        version: 2,
      },
      idempotencyKey: 'idem-resize-1',
    })

    expect(resizeResult.moved.end_at).toBe('2026-07-10T19:30:00.000Z')
    expect(resizeResult.moved.version).toBe(3)

    // ─── Step 4: PARK — drag block to wachtrij ─────────────────────────
    mocked.post.mockResolvedValueOnce({
      data: {
        success: true,
        data: {
          moved: perf({ id: 'p1', stage_id: null, version: 4 }),
          cascaded: [],
        },
      },
    })

    const parkResult = await api.park(perf({ id: 'p1', version: 3 }), 'idem-park-1')

    expect(parkResult.moved.stage_id).toBeNull()

    const parkBody = mocked.post.mock.calls[3][1]

    expect(parkBody).toMatchObject({
      performance_id: 'p1',
      target_stage_id: null,
      target_start_at: null,
      target_end_at: null,
      target_lane: null,
    })

    // ─── Step 5: DELETE the parked performance ─────────────────────────
    mocked.delete.mockResolvedValueOnce({})

    await api.remove.mutateAsync('p1')

    expect(mocked.delete).toHaveBeenCalledTimes(1)
    expect(mocked.delete.mock.calls[0][0]).toContain('/performances/p1')

    // ─── Wire summary: 4 POSTs (create + drag + resize + park) + 1 DELETE
    expect(mocked.post).toHaveBeenCalledTimes(4)
    expect(mocked.delete).toHaveBeenCalledTimes(1)
  })

  it('rolls back optimistic drag when the server returns 409', async () => {
    const { wrapper, notificationMock } = mountFlow()
    const api = getApi(wrapper)

    mocked.post.mockRejectedValueOnce({
      response: {
        status: 409,
        data: {
          errors: {
            conflict: 'version_mismatch',
            current_version: 9,
            client_version: 1,
            server_data: perf({ version: 9 }),
          },
        },
      },
    })

    await expect(api.move.mutateAsync({
      payload: {
        performance_id: 'p1',
        target_stage_id: 's1',
        target_start_at: '2026-07-10 18:00:00',
        target_end_at: '2026-07-10 19:00:00',
        target_lane: 1,
        version: 1,
      },
      idempotencyKey: 'idem-drag-409',
      optimistic: perf({ lane: 1 }),
    })).rejects.toMatchObject({ status: 409 })

    expect(notificationMock.show).toHaveBeenCalledWith(expect.stringMatching(/zojuist aangepast/i), 'error')
  })
})