import { describe, it, expect } from 'vitest'
import { DeviceId } from '../../../app/domain/device/device_id.js'

describe('DeviceId', () => {
  it('creates a valid DeviceId', () => {
    const id = new DeviceId('Sagemcom', 'F8B7FF', 'Livebox', 'SN001')
    expect(id.manufacturer).toBe('Sagemcom')
    expect(id.oui).toBe('F8B7FF')
    expect(id.productClass).toBe('Livebox')
    expect(id.serialNumber).toBe('SN001')
  })

  it('throws if manufacturer is empty', () => {
    expect(() => new DeviceId('', 'OUI', 'PC', 'SN')).toThrow('Manufacturer is required')
  })

  it('throws if manufacturer is whitespace', () => {
    expect(() => new DeviceId('  ', 'OUI', 'PC', 'SN')).toThrow('Manufacturer is required')
  })

  it('throws if serialNumber is empty', () => {
    expect(() => new DeviceId('Mfr', 'OUI', 'PC', '')).toThrow('Serial number is required')
  })

  it('toIdentifier returns formatted string', () => {
    const id = new DeviceId('Sagemcom', 'F8B7FF', 'Livebox 4', 'SN001')
    expect(id.toIdentifier()).toBe('Sagemcom-F8B7FF-Livebox 4-SN001')
  })

  it('toString delegates to toIdentifier', () => {
    const id = new DeviceId('Mfr', 'OUI', 'PC', 'SN')
    expect(id.toString()).toBe(id.toIdentifier())
  })

  it('equals returns true for same values', () => {
    const a = new DeviceId('Mfr', 'OUI', 'PC', 'SN')
    const b = new DeviceId('Mfr', 'OUI', 'PC', 'SN')
    expect(a.equals(b)).toBe(true)
  })

  it('equals returns false for different values', () => {
    const a = new DeviceId('Mfr', 'OUI', 'PC', 'SN1')
    const b = new DeviceId('Mfr', 'OUI', 'PC', 'SN2')
    expect(a.equals(b)).toBe(false)
  })

  it('fromInform creates DeviceId from inform data', () => {
    const id = DeviceId.fromInform({ Manufacturer: 'Huawei', OUI: '202BC1', ProductClass: 'BM632w', SerialNumber: '000000' })
    expect(id.manufacturer).toBe('Huawei')
    expect(id.oui).toBe('202BC1')
  })

  it('fromInform handles missing fields gracefully', () => {
    // fromInform with empty strings will fail validation since manufacturer is required
    expect(() => DeviceId.fromInform({})).toThrow('Manufacturer is required')
  })
})