// tests/main/utils/loopback.test.ts
// 로컬 엔진 URL 정규화 테스트.
// Windows에서 localhost가 ::1로만 해석되어 Ollama/sidecar 연결이 실패했던 회귀를 고정한다.

import { describe, it, expect } from 'vitest'
import { loopbackUrl, normalizeLoopbackUrl } from '../../../src/main/utils/loopback'

describe('normalizeLoopbackUrl', () => {
  it('rewrites a bare localhost host to the IPv4 loopback', () => {
    expect(normalizeLoopbackUrl('http://localhost:11434')).toBe('http://127.0.0.1:11434')
  })

  it('keeps the port and path', () => {
    expect(normalizeLoopbackUrl('http://localhost:8000/v1')).toBe('http://127.0.0.1:8000/v1')
  })

  it('handles https and trailing dot host forms', () => {
    expect(normalizeLoopbackUrl('https://localhost:5000/health')).toBe(
      'https://127.0.0.1:5000/health',
    )
    expect(normalizeLoopbackUrl('http://localhost.:1234')).toBe('http://127.0.0.1:1234')
  })

  it('leaves remote hosts untouched', () => {
    expect(normalizeLoopbackUrl('https://api.openai.com/v1')).toBe('https://api.openai.com/v1')
    expect(normalizeLoopbackUrl('http://192.168.0.10:11434')).toBe('http://192.168.0.10:11434')
    expect(normalizeLoopbackUrl('http://127.0.0.1:11434')).toBe('http://127.0.0.1:11434')
  })

  it('does not treat lookalike hostnames as loopback', () => {
    expect(normalizeLoopbackUrl('http://localhost.evil.com')).toBe('http://localhost.evil.com')
  })

  it('falls back to a textual rewrite when the URL is not parseable', () => {
    // 잘못된 포트는 URL 파서가 던진다 → 정규식 폴백 경로를 탄다.
    expect(normalizeLoopbackUrl('http://localhost:99999999')).toBe(
      'http://127.0.0.1:99999999',
    )
  })

  it('passes through inputs without a recognizable host', () => {
    expect(normalizeLoopbackUrl('localhost:11434')).toBe('localhost:11434')
  })

  it('returns empty input unchanged', () => {
    expect(normalizeLoopbackUrl('')).toBe('')
  })
})

describe('loopbackUrl', () => {
  it('builds an IPv4 loopback URL for a port', () => {
    expect(loopbackUrl(18765)).toBe('http://127.0.0.1:18765')
  })
})