import { describe, it, expect, vi, beforeEach } from 'vitest'
import { createMockEvent } from '../helpers/createMockEvent.js'
import {
  emailSchema,
  memberCreateSchema,
  memberProfileUpdateSchema,
  eventRegistrationSchema,
  updateCreateSchema,
  paymentVerifySchema,
  adminEventCreateSchema
} from '../../../server/utils/schemas.js'
import { validateBody } from '../../../server/utils/validateBody.js'

// --- Schema unit tests ---

describe('emailSchema', () => {
  it('accepts a valid email', () => {
    const result = emailSchema.safeParse({ email: 'test@example.com' })
    expect(result.success).toBe(true)
    expect(result.data.email).toBe('test@example.com')
  })

  it('rejects a malformed email', () => {
    const result = emailSchema.safeParse({ email: 'not-an-email' })
    expect(result.success).toBe(false)
  })

  it('rejects missing email', () => {
    const result = emailSchema.safeParse({})
    expect(result.success).toBe(false)
  })

  it('trims and lowercases email', () => {
    const result = emailSchema.safeParse({ email: '  Test@EXAMPLE.COM  ' })
    expect(result.success).toBe(true)
    expect(result.data.email).toBe('test@example.com')
  })
})

describe('memberCreateSchema', () => {
  const validMember = {
    email: 'new@example.com',
    name: 'Test User',
    circle: 'community',
    contributionTier: '0'
  }

  it('accepts valid member data', () => {
    const result = memberCreateSchema.safeParse(validMember)
    expect(result.success).toBe(true)
  })

  it('rejects role field (mass assignment)', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, role: 'admin' })
    expect(result.success).toBe(true)
    // role should NOT be in the output
    expect(result.data).not.toHaveProperty('role')
  })

  it('rejects status field (mass assignment)', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, status: 'active' })
    expect(result.success).toBe(true)
    expect(result.data).not.toHaveProperty('status')
  })

  it('rejects helcimCustomerId field (mass assignment)', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, helcimCustomerId: 'cust_123' })
    expect(result.success).toBe(true)
    expect(result.data).not.toHaveProperty('helcimCustomerId')
  })

  it('rejects _id field (mass assignment)', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, _id: '507f1f77bcf86cd799439011' })
    expect(result.success).toBe(true)
    expect(result.data).not.toHaveProperty('_id')
  })

  it('rejects invalid circle enum', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, circle: 'superadmin' })
    expect(result.success).toBe(false)
  })

  it('rejects invalid contributionTier enum', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, contributionTier: '999' })
    expect(result.success).toBe(false)
  })

  it('rejects missing required fields', () => {
    const result = memberCreateSchema.safeParse({ email: 'test@example.com' })
    expect(result.success).toBe(false)
  })

  it('lowercases email', () => {
    const result = memberCreateSchema.safeParse({ ...validMember, email: 'NEW@Example.COM' })
    expect(result.success).toBe(true)
    expect(result.data.email).toBe('new@example.com')
  })
})

describe('eventRegistrationSchema', () => {
  it('accepts valid registration', () => {
    const result = eventRegistrationSchema.safeParse({ name: 'Jane', email: 'jane@example.com' })
    expect(result.success).toBe(true)
  })

  it('rejects missing name', () => {
    const result = eventRegistrationSchema.safeParse({ email: 'jane@example.com' })
    expect(result.success).toBe(false)
  })

  it('rejects malformed email', () => {
    const result = eventRegistrationSchema.safeParse({ name: 'Jane', email: 'bad' })
    expect(result.success).toBe(false)
  })

  it('lowercases email', () => {
    const result = eventRegistrationSchema.safeParse({ name: 'Jane', email: 'JANE@Example.COM' })
    expect(result.success).toBe(true)
    expect(result.data.email).toBe('jane@example.com')
  })
})

describe('updateCreateSchema', () => {
  it('accepts valid content', () => {
    const result = updateCreateSchema.safeParse({ content: 'Hello world' })
    expect(result.success).toBe(true)
  })

  it('rejects empty content', () => {
    const result = updateCreateSchema.safeParse({ content: '' })
    expect(result.success).toBe(false)
  })

  it('rejects content exceeding 50000 chars', () => {
    const result = updateCreateSchema.safeParse({ content: 'a'.repeat(50001) })
    expect(result.success).toBe(false)
  })

  it('accepts content at exactly 50000 chars', () => {
    const result = updateCreateSchema.safeParse({ content: 'a'.repeat(50000) })
    expect(result.success).toBe(true)
  })

  it('validates images are URLs', () => {
    const result = updateCreateSchema.safeParse({
      content: 'test',
      images: ['not-a-url']
    })
    expect(result.success).toBe(false)
  })

  it('accepts valid images array', () => {
    const result = updateCreateSchema.safeParse({
      content: 'test',
      images: ['https://example.com/img.png']
    })
    expect(result.success).toBe(true)
  })

  it('rejects more than 20 images', () => {
    const images = Array.from({ length: 21 }, (_, i) => `https://example.com/img${i}.png`)
    const result = updateCreateSchema.safeParse({ content: 'test', images })
    expect(result.success).toBe(false)
  })

  it('validates privacy enum', () => {
    const result = updateCreateSchema.safeParse({ content: 'test', privacy: 'invalid' })
    expect(result.success).toBe(false)
  })
})

describe('paymentVerifySchema', () => {
  it('accepts valid card token and customer ID', () => {
    const result = paymentVerifySchema.safeParse({ cardToken: 'tok_123', customerId: 'cust_456' })
    expect(result.success).toBe(true)
  })

  it('rejects missing cardToken', () => {
    const result = paymentVerifySchema.safeParse({ customerId: 'cust_456' })
    expect(result.success).toBe(false)
  })

  it('rejects empty cardToken', () => {
    const result = paymentVerifySchema.safeParse({ cardToken: '', customerId: 'cust_456' })
    expect(result.success).toBe(false)
  })
})

describe('adminEventCreateSchema', () => {
  const validEvent = {
    title: 'Test Event',
    description: 'A test event',
    startDate: '2026-04-01T10:00:00Z',
    endDate: '2026-04-01T12:00:00Z'
  }

  it('accepts valid event data', () => {
    const result = adminEventCreateSchema.safeParse(validEvent)
    expect(result.success).toBe(true)
  })

  it('rejects missing title', () => {
    const { title, ...rest } = validEvent
    const result = adminEventCreateSchema.safeParse(rest)
    expect(result.success).toBe(false)
  })

  it('rejects missing dates', () => {
    const { startDate, endDate, ...rest } = validEvent
    const result = adminEventCreateSchema.safeParse({ ...rest, title: 'Test' })
    expect(result.success).toBe(false)
  })
})

describe('memberProfileUpdateSchema', () => {
  it('rejects role in profile update', () => {
    const result = memberProfileUpdateSchema.safeParse({ role: 'admin', bio: 'test' })
    expect(result.success).toBe(true)
    expect(result.data).not.toHaveProperty('role')
  })

  it('rejects status in profile update', () => {
    const result = memberProfileUpdateSchema.safeParse({ status: 'active', bio: 'test' })
    expect(result.success).toBe(true)
    expect(result.data).not.toHaveProperty('status')
  })

  it('validates privacy enum values', () => {
    const result = memberProfileUpdateSchema.safeParse({ bioPrivacy: 'invalid' })
    expect(result.success).toBe(false)
  })

  it('accepts valid privacy values', () => {
    const result = memberProfileUpdateSchema.safeParse({ bioPrivacy: 'public' })
    expect(result.success).toBe(true)
  })
})

// --- validateBody integration tests ---

describe('validateBody', () => {
  it('returns validated data on success', async () => {
    const event = createMockEvent({
      method: 'POST',
      body: { email: 'test@example.com' }
    })
    const data = await validateBody(event, emailSchema)
    expect(data.email).toBe('test@example.com')
  })

  it('throws 400 on validation failure', async () => {
    const event = createMockEvent({
      method: 'POST',
      body: { email: 'bad' }
    })
    await expect(validateBody(event, emailSchema)).rejects.toMatchObject({
      statusCode: 400,
      statusMessage: 'Validation failed'
    })
  })

  it('strips unknown fields from output', async () => {
    const event = createMockEvent({
      method: 'POST',
      body: { email: 'test@example.com', name: 'Test', circle: 'community', contributionTier: '0', role: 'admin', _id: 'fake' }
    })
    const data = await validateBody(event, memberCreateSchema)
    expect(data).not.toHaveProperty('role')
    expect(data).not.toHaveProperty('_id')
    expect(data.email).toBe('test@example.com')
    expect(data.name).toBe('Test')
  })
})