import { describe, it, expect } from 'vitest'
import { extractCwmpMessage } from '../../../app/protocol/soap.js'

describe('extractCwmpMessage — SOAP Fault detection', () => {
  it('detects soap-env:Fault as Fault message', () => {
    const body = {
      'soap-env:Fault': {
        faultcode: 'Client',
        faultstring: 'CWMP fault',
        detail: { 'cwmp:Fault': { FaultCode: '9001', FaultString: 'Request denied' } },
      },
    }
    const msg = extractCwmpMessage(body)
    expect(msg).not.toBeNull()
    expect(msg!.type).toBe('Fault')
    expect(msg!.data.faultcode).toBe('Client')
  })

  it('detects SOAP-ENV:Fault as Fault message', () => {
    const body = {
      'SOAP-ENV:Fault': {
        faultcode: 'Server',
        faultstring: 'Internal error',
      },
    }
    const msg = extractCwmpMessage(body)
    expect(msg).not.toBeNull()
    expect(msg!.type).toBe('Fault')
    expect(msg!.data.faultcode).toBe('Server')
  })

  it('detects bare Fault as Fault message', () => {
    const body = {
      Fault: { FaultCode: '9002', FaultString: 'Internal error' },
    }
    const msg = extractCwmpMessage(body)
    expect(msg).not.toBeNull()
    expect(msg!.type).toBe('Fault')
  })

  it('detects soapenv:Fault as Fault message', () => {
    const body = {
      'soapenv:Fault': { faultcode: 'Client', faultstring: 'Fault' },
    }
    const msg = extractCwmpMessage(body)
    expect(msg).not.toBeNull()
    expect(msg!.type).toBe('Fault')
  })

  it('prefers cwmp: prefixed keys over Fault detection', () => {
    const body = {
      'cwmp:GetParameterValuesResponse': { ParameterList: [] },
      'soap-env:Fault': { faultcode: 'Client' },
    }
    const msg = extractCwmpMessage(body)
    expect(msg).not.toBeNull()
    expect(msg!.type).toBe('GetParameterValuesResponse')
  })

  it('returns null when body has no cwmp: keys and no Fault', () => {
    const body = { 'other:Something': {} }
    expect(extractCwmpMessage(body)).toBeNull()
  })
})