cms.c2sgmbh/tests/e2e/tenant-isolation.e2e.spec.ts

/**
 * E2E Tests für Multi-Tenant Isolation
 *
 * Kritische Tests um sicherzustellen, dass Daten zwischen Tenants isoliert sind
 */

import { test, expect } from '@playwright/test'

// Known tenant IDs
const TENANT_PORWOLL = 1
const TENANT_C2S = 4
const TENANT_GUNSHIN = 5

test.describe('Tenant Isolation - Public APIs', () => {
  test.describe('News API Tenant Isolation', () => {
    test('News API requires tenant parameter', async ({ request }) => {
      const response = await request.get('/api/news')

      expect(response.status()).toBe(400)

      const data = await response.json()
      expect(data.error).toContain('Tenant ID is required')
    })

    test('News API returns different data for different tenants', async ({ request }) => {
      const [response1, response4, response5] = await Promise.all([
        request.get(`/api/news?tenant=${TENANT_PORWOLL}`),
        request.get(`/api/news?tenant=${TENANT_C2S}`),
        request.get(`/api/news?tenant=${TENANT_GUNSHIN}`),
      ])

      expect(response1.ok()).toBe(true)
      expect(response4.ok()).toBe(true)
      expect(response5.ok()).toBe(true)

      const data1 = await response1.json()
      const data4 = await response4.json()
      const data5 = await response5.json()

      // Each response should reflect its tenant filter
      expect(data1.filters.tenant).toBe(TENANT_PORWOLL)
      expect(data4.filters.tenant).toBe(TENANT_C2S)
      expect(data5.filters.tenant).toBe(TENANT_GUNSHIN)
    })

    test('News detail API enforces tenant isolation', async ({ request }) => {
      // Get a news item from tenant 1
      const listResponse = await request.get(`/api/news?tenant=${TENANT_PORWOLL}&limit=1`)

      if (!listResponse.ok()) {
        test.skip()
        return
      }

      const listData = await listResponse.json()

      if (listData.docs.length === 0) {
        test.skip()
        return
      }

      const slug = listData.docs[0].slug

      // Try to access with wrong tenant - should return 404
      const wrongTenantResponse = await request.get(`/api/news/${slug}?tenant=${TENANT_C2S}`)

      // Should not find the article (different tenant)
      expect(wrongTenantResponse.status()).toBe(404)

      // Same tenant should work
      const correctTenantResponse = await request.get(`/api/news/${slug}?tenant=${TENANT_PORWOLL}`)
      expect(correctTenantResponse.ok()).toBe(true)
    })
  })

  test.describe('Posts API Tenant Isolation', () => {
    test('Posts API filters by tenant when specified', async ({ request }) => {
      const response = await request.get(`/api/posts?tenant=${TENANT_PORWOLL}`)

      expect(response.ok()).toBe(true)

      const data = await response.json()
      expect(data.filters.tenant).toBe(TENANT_PORWOLL)
    })

    test('Different tenants can have independent post counts', async ({ request }) => {
      const [response1, response4] = await Promise.all([
        request.get(`/api/posts?tenant=${TENANT_PORWOLL}&limit=1`),
        request.get(`/api/posts?tenant=${TENANT_C2S}&limit=1`),
      ])

      expect(response1.ok()).toBe(true)
      expect(response4.ok()).toBe(true)

      const data1 = await response1.json()
      const data4 = await response4.json()

      // Both should have valid pagination info
      expect(data1.pagination).toHaveProperty('totalDocs')
      expect(data4.pagination).toHaveProperty('totalDocs')

      // Counts can be different (independent data)
      expect(typeof data1.pagination.totalDocs).toBe('number')
      expect(typeof data4.pagination.totalDocs).toBe('number')
    })
  })

  test.describe('Newsletter Tenant Isolation', () => {
    test('Newsletter subscription requires tenant', async ({ request }) => {
      const response = await request.post('/api/newsletter/subscribe', {
        data: {
          email: 'isolation-test@example.com',
        },
      })

      expect(response.status()).toBe(400)

      const data = await response.json()
      expect(data.message).toContain('Tenant')
    })

    test('Newsletter subscriptions are tenant-specific', async ({ request }) => {
      const uniqueEmail = `tenant-isolation-${Date.now()}@e2e-test.example`

      // Subscribe to tenant 1
      const response1 = await request.post('/api/newsletter/subscribe', {
        data: {
          email: uniqueEmail,
          tenantId: TENANT_PORWOLL,
        },
      })

      // Should succeed or be rate limited
      expect([200, 400, 429]).toContain(response1.status())

      // Subscribe same email to tenant 4 (should be separate)
      const response4 = await request.post('/api/newsletter/subscribe', {
        data: {
          email: uniqueEmail,
          tenantId: TENANT_C2S,
        },
      })

      // Both should be able to subscribe (separate per tenant)
      expect([200, 400, 429]).toContain(response4.status())
    })
  })
})

test.describe('Tenant Isolation - Protected APIs', () => {
  test('Tenants API requires authentication', async ({ request }) => {
    const response = await request.get('/api/tenants')

    expect([401, 403]).toContain(response.status())
  })

  test('Users API requires authentication', async ({ request }) => {
    const response = await request.get('/api/users')

    expect([401, 403]).toContain(response.status())
  })

  test('Media API requires authentication', async ({ request }) => {
    const response = await request.get('/api/media')

    expect([401, 403]).toContain(response.status())
  })

  test('Pages API requires authentication', async ({ request }) => {
    const response = await request.get('/api/pages')

    expect([401, 403]).toContain(response.status())
  })

  test('Categories API requires authentication', async ({ request }) => {
    const response = await request.get('/api/categories')

    expect([401, 403]).toContain(response.status())
  })
})

test.describe('Tenant Data Leakage Prevention', () => {
  test('Cannot enumerate tenants without auth', async ({ request }) => {
    const response = await request.get('/api/tenants')

    // Should not expose tenant list without authentication
    expect([401, 403]).toContain(response.status())
  })

  test('Cannot access other tenant media without auth', async ({ request }) => {
    const response = await request.get('/api/media')

    expect([401, 403]).toContain(response.status())
  })

  test('Public endpoints do not leak tenant information', async ({ request }) => {
    const response = await request.get(`/api/news?tenant=${TENANT_PORWOLL}`)

    expect(response.ok()).toBe(true)

    const data = await response.json()

    // Response should not contain sensitive tenant data
    for (const doc of data.docs) {
      // Should not expose full tenant object, only ID reference at most
      if (doc.tenant) {
        expect(typeof doc.tenant).not.toBe('object')
      }
    }
  })

  test('Error messages do not leak tenant information', async ({ request }) => {
    const response = await request.get('/api/news?tenant=99999')

    expect(response.ok()).toBe(true)

    const data = await response.json()

    // Should return empty results, not expose info about non-existent tenant
    expect(data.docs).toEqual([])
    // Error message should not reveal tenant existence
  })
})

test.describe('Cross-Tenant Access Prevention', () => {
  test('Cannot access data from wrong tenant via news API', async ({ request }) => {
    // Assuming tenant 1 has some posts but tenant 99999 doesn't exist
    const validResponse = await request.get(`/api/news?tenant=${TENANT_PORWOLL}`)
    const invalidResponse = await request.get('/api/news?tenant=99999')

    expect(validResponse.ok()).toBe(true)
    expect(invalidResponse.ok()).toBe(true) // Returns empty, not error

    const validData = await validResponse.json()
    const invalidData = await invalidResponse.json()

    // Invalid tenant should return empty results
    expect(invalidData.docs).toEqual([])
    expect(invalidData.pagination.totalDocs).toBe(0)
  })

  test('Archive data is tenant-scoped', async ({ request }) => {
    const response = await request.get(`/api/news?tenant=${TENANT_PORWOLL}&includeArchive=true`)

    expect(response.ok()).toBe(true)

    const data = await response.json()

    // Archive should be present and scoped to tenant
    expect(data).toHaveProperty('archive')
    expect(data.filters.tenant).toBe(TENANT_PORWOLL)
  })

  test('Categories are tenant-scoped', async ({ request }) => {
    const response = await request.get(`/api/news?tenant=${TENANT_PORWOLL}&includeCategories=true`)

    expect(response.ok()).toBe(true)

    const data = await response.json()

    // Categories should be present and scoped to tenant
    expect(data).toHaveProperty('categories')
    expect(Array.isArray(data.categories)).toBe(true)
  })
})

test.describe('Timeline API Tenant Isolation', () => {
  test('Timeline API requires tenant parameter', async ({ request }) => {
    const response = await request.get('/api/timelines')

    expect(response.status()).toBe(400)

    const data = await response.json()
    expect(data.error).toContain('Tenant ID is required')
  })

  test('Timeline API returns different data for different tenants', async ({ request }) => {
    const [response1, response4, response5] = await Promise.all([
      request.get(`/api/timelines?tenant=${TENANT_PORWOLL}`),
      request.get(`/api/timelines?tenant=${TENANT_C2S}`),
      request.get(`/api/timelines?tenant=${TENANT_GUNSHIN}`),
    ])

    expect(response1.ok()).toBe(true)
    expect(response4.ok()).toBe(true)
    expect(response5.ok()).toBe(true)

    const data1 = await response1.json()
    const data4 = await response4.json()
    const data5 = await response5.json()

    // Each response should reflect its tenant filter
    expect(data1.filters.tenant).toBe(TENANT_PORWOLL)
    expect(data4.filters.tenant).toBe(TENANT_C2S)
    expect(data5.filters.tenant).toBe(TENANT_GUNSHIN)
  })

  test('Timeline API validates tenant ID format', async ({ request }) => {
    const response = await request.get('/api/timelines?tenant=invalid')

    expect(response.status()).toBe(400)

    const data = await response.json()
    expect(data.error).toContain('Invalid tenant ID')
  })

  test('Timeline API returns empty for non-existent tenant', async ({ request }) => {
    const response = await request.get('/api/timelines?tenant=99999')

    expect(response.ok()).toBe(true)

    const data = await response.json()
    expect(data.docs).toEqual([])
    expect(data.total).toBe(0)
  })

  test('Timeline API supports type filtering', async ({ request }) => {
    const response = await request.get(`/api/timelines?tenant=${TENANT_PORWOLL}&type=history`)

    expect(response.ok()).toBe(true)

    const data = await response.json()
    expect(data.filters.type).toBe('history')
  })

  test('Timeline API rejects invalid type', async ({ request }) => {
    const response = await request.get(`/api/timelines?tenant=${TENANT_PORWOLL}&type=invalid`)

    expect(response.status()).toBe(400)

    const data = await response.json()
    expect(data.error).toContain('Invalid type')
  })

  test('Timeline API supports locale parameter', async ({ request }) => {
    const [responseDE, responseEN] = await Promise.all([
      request.get(`/api/timelines?tenant=${TENANT_PORWOLL}&locale=de`),
      request.get(`/api/timelines?tenant=${TENANT_PORWOLL}&locale=en`),
    ])

    expect(responseDE.ok()).toBe(true)
    expect(responseEN.ok()).toBe(true)

    const dataDE = await responseDE.json()
    const dataEN = await responseEN.json()

    expect(dataDE.filters.locale).toBe('de')
    expect(dataEN.filters.locale).toBe('en')
  })

  test('Timeline detail API enforces tenant isolation', async ({ request }) => {
    // Get a timeline from tenant 1
    const listResponse = await request.get(`/api/timelines?tenant=${TENANT_PORWOLL}`)

    if (!listResponse.ok()) {
      test.skip()
      return
    }

    const listData = await listResponse.json()

    if (listData.docs.length === 0) {
      test.skip()
      return
    }

    const slug = listData.docs[0].slug

    // Try to access with wrong tenant - should return 404
    const wrongTenantResponse = await request.get(`/api/timelines?tenant=${TENANT_C2S}&slug=${slug}`)

    // Should not find the timeline (different tenant)
    expect(wrongTenantResponse.status()).toBe(404)

    // Same tenant should work
    const correctTenantResponse = await request.get(
      `/api/timelines?tenant=${TENANT_PORWOLL}&slug=${slug}`
    )
    expect(correctTenantResponse.ok()).toBe(true)
  })
})

test.describe('Tenant Validation', () => {
  test('Rejects invalid tenant ID format', async ({ request }) => {
    const response = await request.get('/api/news?tenant=invalid')

    expect(response.status()).toBe(400)

    const data = await response.json()
    expect(data.error).toContain('Invalid tenant ID')
  })

  test('Rejects negative tenant ID', async ({ request }) => {
    const response = await request.get('/api/news?tenant=-1')

    expect(response.status()).toBe(400)

    const data = await response.json()
    expect(data.error).toContain('Invalid tenant ID')
  })

  test('Rejects zero tenant ID', async ({ request }) => {
    const response = await request.get('/api/news?tenant=0')

    expect(response.status()).toBe(400)

    const data = await response.json()
    expect(data.error).toContain('Invalid tenant ID')
  })

  test('Rejects floating point tenant ID', async ({ request }) => {
    const response = await request.get('/api/news?tenant=1.5')

    // Should either reject or truncate to integer
    expect([200, 400]).toContain(response.status())
  })
})