familysync/apps/api/tests/routes/events.test.ts

/**
 * Tests for GET /api/events — windowed endpoint.
 *
 * Contracts:
 *  1. Missing/malformed start or end params → 400 (input validation guard)
 *  2. Window wider than 90 days → 400 (DoS cap)
 *  3. Valid window returns { occurrences: [] } when DB is empty
 *  4. Recurring timed master (dtstartUtc years before window, hasRrule=1) yields occurrences
 *     inside the requested window via expandOccurrences.
 *  5. Recurring all-day master (dtstartUtc NULL, dtstartDate years before window, hasRrule=1)
 *     is NOT filtered out — its occurrence in the window is returned.
 *
 * Write endpoint contracts (added Plan 03-03):
 *  6. POST /create validates input, enqueues outbox row, returns 202.
 *  7. POST /create with non-owned calendarUrl returns 403 (D-03 / V4).
 *  8. PATCH /:uid/edit enqueues update outbox row, returns 202.
 *  9. DELETE /:uid enqueues delete outbox row, returns 202.
 * 10. GET /sync-status?uid= returns outbox status for the member's UID.
 * 11. GET /writable-calendars returns member's own + shared calendars, never other member's personal.
 */

import { describe, it, expect, vi, beforeEach } from 'vitest'
import {
  SAMPLE_VEVENT_RECURRING_TIMED,
  SAMPLE_VEVENT_RECURRING_ALLDAY,
} from '../helpers/db.js'

// Mock @hono/oidc-auth so tests do not need a live Authelia instance.
// The mock makes oidcAuthMiddleware a no-op passthrough.
vi.mock('@hono/oidc-auth', () => ({
  oidcAuthMiddleware: () => async (_c: unknown, next: () => Promise<void>) => next(),
  processOAuthCallback: () => async (c: { json: (v: unknown) => unknown }) => c.json({ ok: true }),
  getAuth: () => null,
}))

// ---------------------------------------------------------------------------
// Configurable mock for the DB.
// ALL db methods used by the events router are mocked here so vi.mock can
// reference them. Vitest hoists vi.mock to the top of the file — the factory
// must refer to variables that are mutable (reassigned in beforeEach) via
// wrapper fns rather than direct references to lets.
// ---------------------------------------------------------------------------

// --- select chain ---
let mockDbRows: unknown[] = []
const mockWhereFn = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
const mockInnerJoin2Fn = vi.fn().mockReturnValue({ where: mockWhereFn })
const mockInnerJoin1Fn = vi.fn().mockReturnValue({ innerJoin: mockInnerJoin2Fn })
const mockFromFn = vi.fn().mockReturnValue({ innerJoin: mockInnerJoin1Fn })
const mockSelectFn = vi.fn().mockReturnValue({ from: mockFromFn })

// --- Simple select chain used by /sync-status and /writable-calendars (no joins) ---
// We intercept via mockSelectFn dispatcher — each test controls which path fires
// by configuring mockFromFn to return either join chain or where-only chain.

// --- insert chain ---
let mockInsertValuesFn = vi.fn().mockResolvedValue([{ insertId: 1 }])
const mockInsertFn = vi.fn().mockImplementation(() => ({ values: mockInsertValuesFn }))

// --- transaction ---
// Drizzle transaction receives a callback (tx => ...). The mock invokes the callback
// with a fake tx object that has insert: mockInsertFn so transactional inserts are counted.
const mockTransactionFn = vi.fn().mockImplementation(
  async (cb: (tx: { insert: typeof mockInsertFn }) => Promise<void>) => {
    await cb({ insert: mockInsertFn })
  },
)

vi.mock('../../src/db/client.js', () => ({
  db: {
    select: mockSelectFn,
    insert: mockInsertFn,
    transaction: mockTransactionFn,
  },
}))

// ---------------------------------------------------------------------------
// Shared state reset
// ---------------------------------------------------------------------------
beforeEach(() => {
  mockDbRows = []
  vi.clearAllMocks()

  // Restore select chain (vi.clearAllMocks wipes mockImplementation)
  mockWhereFn.mockImplementation(() => Promise.resolve(mockDbRows))
  mockInnerJoin2Fn.mockReturnValue({ where: mockWhereFn })
  mockInnerJoin1Fn.mockReturnValue({ innerJoin: mockInnerJoin2Fn })
  mockFromFn.mockReturnValue({ innerJoin: mockInnerJoin1Fn })
  mockSelectFn.mockReturnValue({ from: mockFromFn })

  // Restore insert chain
  mockInsertValuesFn = vi.fn().mockResolvedValue([{ insertId: 1 }])
  mockInsertFn.mockImplementation(() => ({ values: mockInsertValuesFn }))

  // Restore transaction
  mockTransactionFn.mockImplementation(
    async (cb: (tx: { insert: typeof mockInsertFn }) => Promise<void>) => {
      await cb({ insert: mockInsertFn })
    },
  )
})

// ---------------------------------------------------------------------------
// GET /api/events — windowed read
// ---------------------------------------------------------------------------
describe('GET /api/events', () => {
  beforeEach(() => {
    // The windowed GET uses the 3-join select chain; ensure it is wired.
    mockFromFn.mockReturnValue({ innerJoin: mockInnerJoin1Fn })
    mockSelectFn.mockReturnValue({ from: mockFromFn })
  })

  it('returns 400 when start param is missing', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events?end=2026-07-01')
    expect(res.status).toBe(400)
  })

  it('returns 400 when end param is missing', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events?start=2026-06-01')
    expect(res.status).toBe(400)
  })

  it('returns 400 when start param is malformed (not YYYY-MM-DD)', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events?start=not-a-date&end=2026-07-01')
    expect(res.status).toBe(400)
  })

  it('returns occurrences with color, isShared, and ownerName fields for valid window', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events?start=2026-06-01&end=2026-07-01')
    expect(res.status).toBe(200)
    const body = await res.json() as { occurrences: Array<{ color: string; isShared: boolean; ownerName: string | null }> }
    expect(body).toHaveProperty('occurrences')
    expect(Array.isArray(body.occurrences)).toBe(true)
    // Each occurrence must carry color + isShared + ownerName (may be empty array if DB is mocked empty)
    for (const occ of body.occurrences) {
      expect(occ).toHaveProperty('color')
      expect(typeof occ.color).toBe('string')
      expect(occ).toHaveProperty('isShared')
      expect(typeof occ.isShared).toBe('boolean')
      expect(occ).toHaveProperty('ownerName')
      // ownerName is string | null — both are valid
      expect(occ.ownerName === null || typeof occ.ownerName === 'string').toBe(true)
    }
  })

  it('returns occurrences for a timed recurring master whose dtstartUtc is years before the window', async () => {
    // Simulates a weekly meeting created in 2024 (dtstartUtc=2024-01-01) being queried for
    // a 2026 window. The SQL pre-filter must select it (hasRrule=1 AND dtstartUtc < windowEnd)
    // and expandOccurrences must return the in-window occurrences.
    // SAMPLE_VEVENT_RECURRING_TIMED has DTSTART:20240101T100000Z RRULE:FREQ=WEEKLY;BYDAY=MO.
    // In the 2026-06-01..2026-07-01 window there are 4 Mondays.
    mockDbRows = [
      {
        rawVevent: SAMPLE_VEVENT_RECURRING_TIMED,
        calendarId: 1,
        calendarName: 'Work',
        isShared: false,
        userId: 1,
        userColor: '#4A90D9',
        ownerName: 'Alice',
      },
    ]

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events?start=2026-06-01&end=2026-07-01')
    expect(res.status).toBe(200)

    const body = await res.json() as { occurrences: Array<{ uid: string; start: string; allDay: boolean; ownerName: string | null }> }
    expect(body.occurrences.length).toBeGreaterThan(0)

    // All returned occurrences must be inside [2026-06-01, 2026-07-01)
    for (const occ of body.occurrences) {
      expect(occ.uid).toBe('test-recurring-timed-001@familysync')
      expect(occ.allDay).toBe(false)
      // start must be within the window
      const startDate = occ.start.slice(0, 10) // 'YYYY-MM-DD'
      expect(startDate >= '2026-06-01').toBe(true)
      expect(startDate < '2026-07-01').toBe(true)
      // ownerName from the mock row must be threaded through
      expect(occ.ownerName).toBe('Alice')
    }
  })

  it('returns occurrence for an all-day recurring master whose dtstartDate is years before the window (dtstartUtc NULL)', async () => {
    // Simulates an annual birthday created in 2024 (DTSTART;VALUE=DATE:20240615, no dtstartUtc).
    // The SQL pre-filter MUST NOT exclude it on dtstartUtc IS NULL — the fix adds
    //   OR dtstartDate < end
    // so this row is selected and expandOccurrences returns the 2026-06-15 occurrence.
    // SAMPLE_VEVENT_RECURRING_ALLDAY has DTSTART;VALUE=DATE:20240615 RRULE:FREQ=YEARLY.
    mockDbRows = [
      {
        rawVevent: SAMPLE_VEVENT_RECURRING_ALLDAY,
        calendarId: 2,
        calendarName: 'Personal',
        isShared: false,
        userId: 1,
        userColor: '#50C878',
        ownerName: 'Bob',
      },
    ]

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events?start=2026-06-01&end=2026-07-01')
    expect(res.status).toBe(200)

    const body = await res.json() as { occurrences: Array<{ uid: string; start: string; allDay: boolean }> }
    // There must be exactly one annual occurrence (June 15) in the window
    expect(body.occurrences.length).toBe(1)

    const occ = body.occurrences[0]
    expect(occ.uid).toBe('test-recurring-allday-001@familysync')
    expect(occ.allDay).toBe(true)
    expect(occ.start).toBe('2026-06-15')
  })
})

// ---------------------------------------------------------------------------
// Write endpoints + sync-status + writable-calendars (Plan 03-03)
//
// CAL-04/05/06, D-03, D-05, D-08, D-09
//
// These tests extend the existing GET /api/events suite.
// They were RED in Plan 01 and turn GREEN in Plan 03-03.
//
// Auth: the top-level vi.mock for @hono/oidc-auth sets getAuth → null.
// The dev-bypass (DEV_AUTH_BYPASS env) is NOT active in the test environment,
// so the routes fall through to getAuth(c) which returns null → 401.
//
// HOWEVER: for write routes in test, we need an authenticated user. The test
// environment sets DEV_AUTH_BYPASS=true via the vitest.config or the route's
// dev-bypass reads c.get('user'). But since DEV_AUTH_BYPASS env is not set in
// the test runner, c.get('user') will be undefined and getAuth(c) returns null.
//
// Resolution: the write route implementation falls back gracefully — when both
// devUser and getAuth return null/undefined, it returns 401. But the write tests
// do NOT check for 401; they expect 202/400/403. Therefore:
//   - We need a way to inject a user. The cleanest approach is to mock the
//     devBypass module so that c.get('user') returns DEV_USER in tests.
//   - We mock '../auth/devBypass.js' to inject a fixed user into context.
// ---------------------------------------------------------------------------

// Mock devAuthBypass to inject a fixed dev user in ALL test requests.
// This mirrors what DEV_AUTH_BYPASS=true does in the real app but without
// requiring env-var manipulation across test isolation.
vi.mock('../../src/auth/devBypass.js', async (importOriginal) => {
  const original = await importOriginal<typeof import('../../src/auth/devBypass.js')>()
  return {
    ...original,
    devAuthBypass: () => async (c: { set: (k: string, v: unknown) => void }, next: () => Promise<void>) => {
      c.set('user', { id: 1, oidcIss: 'dev', oidcSub: 'dev-user', displayName: 'Dev User', color: '#4A90D9' })
      await next()
    },
  }
})

// ---------------------------------------------------------------------------
// POST /api/events/create
// ---------------------------------------------------------------------------
describe('POST /api/events/create', () => {
  beforeEach(() => {
    // create: select chain used to look up calendar ownership.
    // Default: mockDbRows=[] means no owned calendar found → 403 for calendarUrl given.
    // To get 202, we need to either supply no calendarUrl (uses default) or supply a
    // calendarUrl that matches a calendar row. For simplicity: mock a calendar row as
    // owned by user 1 matching the test calendarUrl.
    mockDbRows = [
      {
        id: 1,
        url: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
        displayName: 'Default',
        color: '#4A90D9',
        userId: 1,
        isShared: false,
      },
    ]
    // Rewire select chain for simple where-only queries (no joins needed for calendar lookup).
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })
  })

  it('returns 202 and inserts a pending outbox row for a valid create request', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/create', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        summary: 'New event',
        allDay: false,
        dtstart: '2026-06-15T10:00:00Z',
        dtend: '2026-06-15T11:00:00Z',
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
      }),
    })
    expect(res.status).toBe(202)
    const body = await res.json() as { uid: string }
    expect(body).toHaveProperty('uid')
    expect(typeof body.uid).toBe('string')
  })

  it('returns 400 for missing required fields', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/create', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ summary: 'Missing dates' }),
    })
    expect(res.status).toBe(400)
  })

  it('returns 403 when writing to a calendar not owned by the user (D-03 / V4)', async () => {
    // Override: no owned calendar matches this URL
    mockDbRows = []
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve([]))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/create', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        summary: 'Unauthorized write',
        allDay: false,
        dtstart: '2026-06-15T10:00:00Z',
        dtend: '2026-06-15T11:00:00Z',
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/other@fm.com/Personal/',
      }),
    })
    expect(res.status).toBe(403)
  })
})

// ---------------------------------------------------------------------------
// PATCH /api/events/:uid/edit
// ---------------------------------------------------------------------------
describe('PATCH /api/events/:uid/edit', () => {
  beforeEach(() => {
    // Seed mock DB with a calendar event row that the edit will look up by uid.
    // The event's calendar must be owned by user 1 (dev user).
    mockDbRows = [
      {
        uid: 'uid-001@familysync',
        etag: '"etag-abc"',
        objectUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/uid-001.ics',
        calendarId: 1,
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
        userId: 1,
      },
    ]
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })
  })

  it('returns 202 and inserts an outbox row with etag for a valid edit request', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/uid-001%40familysync/edit', {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        summary: 'Updated title',
        allDay: false,
        dtstart: '2026-06-15T10:00:00Z',
        dtend: '2026-06-15T11:00:00Z',
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
      }),
    })
    expect(res.status).toBe(202)
  })
})

// ---------------------------------------------------------------------------
// DELETE /api/events/:uid
// ---------------------------------------------------------------------------
describe('DELETE /api/events/:uid', () => {
  beforeEach(() => {
    // Seed a matching event row
    mockDbRows = [
      {
        uid: 'uid-001@familysync',
        etag: '"etag-abc"',
        objectUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/uid-001.ics',
        calendarId: 1,
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
        userId: 1,
      },
    ]
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })
  })

  it('returns 202 and inserts a delete outbox row', async () => {
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/uid-001%40familysync', {
      method: 'DELETE',
    })
    expect(res.status).toBe(202)
  })
})

// ---------------------------------------------------------------------------
// GET /api/events/sync-status
// ---------------------------------------------------------------------------
describe('GET /api/events/sync-status', () => {
  it('returns the outbox status for a given uid (row found → pending)', async () => {
    // Seed a pending outbox row
    mockDbRows = [{ uid: 'uid-001@familysync', status: 'pending', lastError: null, userId: 1 }]
    // Simple select chain: .from().where() returns the outbox row
    const mockOrderBy = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    const mockLimit = vi.fn().mockReturnValue(mockOrderBy)
    const mockSimpleWhere = vi.fn().mockReturnValue({ limit: mockLimit })
    const mockOrderByDirect = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    // Some implementations use .where().orderBy() or just .where()
    mockSimpleWhere.mockReturnValue({ limit: mockLimit, orderBy: vi.fn().mockReturnValue({ limit: vi.fn().mockResolvedValue(mockDbRows) }) })
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/sync-status?uid=uid-001%40familysync')
    expect(res.status).toBe(200)
    const body = await res.json() as { uid: string; status: string }
    expect(body).toHaveProperty('uid')
    expect(body).toHaveProperty('status')
    expect(['pending', 'done', 'failed', 'dead']).toContain(body.status)
  })

  it('returns status done when no outbox row exists for uid', async () => {
    mockDbRows = []
    const mockSimpleWhere = vi.fn().mockReturnValue({
      orderBy: vi.fn().mockReturnValue({ limit: vi.fn().mockResolvedValue([]) }),
    })
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/sync-status?uid=uid-999%40familysync')
    expect(res.status).toBe(200)
    const body = await res.json() as { uid: string; status: string }
    expect(body.status).toBe('done')
  })
})

// ---------------------------------------------------------------------------
// CR-01 contract tests — canonical client payload shape (title/start/end)
//
// The PWA sends {title, start, end, allDay, recurrence} — the exact
// CreateEventPayload shape from apps/pwa/src/api/client.ts:119-128.
// These tests assert the server schema accepts that shape (202), NOT 400.
// RED before Task 1 schema rename; GREEN after.
// ---------------------------------------------------------------------------
describe('CR-01: canonical client payload (title/start/end) accepted by server', () => {
  beforeEach(() => {
    // Seed a calendar row for calendar ownership check in create
    mockDbRows = [
      {
        id: 1,
        url: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
        displayName: 'Default',
        color: '#4A90D9',
        userId: 1,
        isShared: false,
      },
    ]
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })
  })

  it('POST /create with exact CreateEventPayload shape {title,start,end,allDay,recurrence} returns 202 not 400', async () => {
    // This mirrors the exact payload apps/pwa/src/api/client.ts CreateEventPayload sends
    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/create', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        title: 'Team standup',
        allDay: false,
        start: '2026-06-15T10:00:00Z',
        end: '2026-06-15T10:30:00Z',
        recurrence: 'none',
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
      }),
    })
    expect(res.status).toBe(202)
    const body = await res.json() as { uid: string }
    expect(body).toHaveProperty('uid')
  })

  it('PATCH /:uid/edit with exact CreateEventPayload shape {title,start,end,allDay,recurrence} returns 202 not 400', async () => {
    // Seed an event row for edit lookup
    mockDbRows = [
      {
        uid: 'uid-cr01@familysync',
        etag: '"etag-cr01"',
        objectUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/uid-cr01.ics',
        calendarId: 1,
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
        userId: 1,
      },
    ]
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/uid-cr01%40familysync/edit', {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        title: 'Updated standup',
        allDay: false,
        start: '2026-06-15T10:00:00Z',
        end: '2026-06-15T10:30:00Z',
        recurrence: 'weekly',
        calendarUrl: 'https://caldav.fastmail.com/dav/calendars/user/test@fm.com/Default/',
      }),
    })
    expect(res.status).toBe(202)
  })
})

// ---------------------------------------------------------------------------
// GET /api/events/writable-calendars
// ---------------------------------------------------------------------------
describe('GET /api/events/writable-calendars', () => {
  it('returns calendars writable by the current user (own personal + shared isShared=1)', async () => {
    // Seed: user 1's personal + a shared calendar
    mockDbRows = [
      { id: 1, url: 'https://caldav.fm/personal/', displayName: 'Personal', color: '#4A90D9', userId: 1, isShared: false },
      { id: 3, url: 'https://caldav.fm/family/', displayName: 'Family', color: '#F25C7A', userId: 1, isShared: true },
    ]
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/writable-calendars')
    expect(res.status).toBe(200)
    const body = await res.json() as { calendars: unknown[] }
    expect(body).toHaveProperty('calendars')
    expect(Array.isArray(body.calendars)).toBe(true)
    expect(body.calendars.length).toBe(2)
  })

  it('does NOT return another member\'s personal calendar (D-03 / V4 access control)', async () => {
    // Seed: only user 1's personal — no other member's personal should leak through.
    // The DB query itself is scoped (WHERE userId=1 OR isShared=1) so a second member's
    // personal calendar (userId=2, isShared=false) never appears in the result set.
    mockDbRows = [
      { id: 1, url: 'https://caldav.fm/personal/', displayName: 'Personal', color: '#4A90D9', userId: 1, isShared: false },
    ]
    const mockSimpleWhere = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
    mockFromFn.mockReturnValue({ where: mockSimpleWhere })
    mockSelectFn.mockReturnValue({ from: mockFromFn })

    const { app } = await import('../../src/index.js')
    const res = await app.request('/api/events/writable-calendars')
    expect(res.status).toBe(200)
    const body = await res.json() as { calendars: Array<{ url: string; displayName: string; color: string; isShared: boolean }> }
    // No calendar with a different userId and isShared=false should appear
    for (const cal of body.calendars) {
      // All returned calendars must expose the WritableCalendar shape
      expect(cal).toHaveProperty('url')
      expect(cal).toHaveProperty('displayName')
      expect(cal).toHaveProperty('color')
      expect(cal).toHaveProperty('isShared')
    }
    // Specifically: user 2's personal calendar (id=2, userId=2, isShared=false) is absent.
    // Since the DB mock only returns user 1's calendar, this is guaranteed by the query scope.
    expect(body.calendars.length).toBe(1)
  })
})