import { describe, it, expect } from 'vitest'
import { assertHttpUrl } from '../src/main/url'
import { isAllowedLoginUrl } from '../src/main/cookies'
import { isYtdlpUpdateChannel } from '@shared/ipc'

// --- F5: assertHttpUrl — argument-injection guard + normalisation -----------

describe('assertHttpUrl (audit F5)', () => {
  it('accepts http(s) URLs and returns the normalised href', () => {
    expect(assertHttpUrl('https://www.youtube.com/watch?v=abc')).toBe(
      'https://www.youtube.com/watch?v=abc'
    )
    // http with a bare host normalises to a trailing slash
    expect(assertHttpUrl('http://example.com')).toBe('http://example.com/')
  })

  it('trims surrounding whitespace', () => {
    expect(assertHttpUrl('  https://example.com/v  ')).toBe('https://example.com/v')
  })

  it('strips interior tabs/newlines the URL parser tolerates (normalised output)', () => {
    // Returning the raw input would leak these through to argv / loadURL.
    expect(assertHttpUrl('https://exa\nmple.com/v')).toBe('https://example.com/v')
    const out = assertHttpUrl('https://example.com/a\tb')
    expect(out).not.toContain('\t')
    expect(out).not.toContain('\n')
  })

  it('rejects non-http(s) protocols', () => {
    expect(() => assertHttpUrl('file:///C:/Windows/system32')).toThrow()
    expect(() => assertHttpUrl('javascript:alert(1)')).toThrow()
    expect(() => assertHttpUrl('ftp://example.com/x')).toThrow()
    expect(() => assertHttpUrl('aerofetch://download?url=x')).toThrow()
  })

  it('rejects unparseable input', () => {
    expect(() => assertHttpUrl('not a url')).toThrow()
    expect(() => assertHttpUrl('')).toThrow()
  })

  it('can never return a value that begins with "-" (would read as a yt-dlp flag)', () => {
    // A leading '-' cannot start a valid URL scheme, so it always throws —
    // the returned value therefore never opens with a dash.
    expect(() => assertHttpUrl('-https://example.com')).toThrow()
  })
})

// --- T4: isAllowedLoginUrl — sign-in window navigation confinement ----------

describe('isAllowedLoginUrl (audit T4)', () => {
  it('allows http(s) and about:blank', () => {
    expect(isAllowedLoginUrl('https://accounts.google.com/signin')).toBe(true)
    expect(isAllowedLoginUrl('http://example.com/login')).toBe(true)
    expect(isAllowedLoginUrl('about:blank')).toBe(true)
  })

  it('blocks file://, the app protocol, and other external URI schemes', () => {
    expect(isAllowedLoginUrl('file:///C:/Windows/System32/calc.exe')).toBe(false)
    expect(isAllowedLoginUrl('aerofetch://download?url=https://evil.test')).toBe(false)
    expect(isAllowedLoginUrl('ms-settings:')).toBe(false)
    expect(isAllowedLoginUrl('mailto:x@y.z')).toBe(false)
    expect(isAllowedLoginUrl('javascript:alert(1)')).toBe(false)
  })

  it('blocks unparseable input', () => {
    expect(isAllowedLoginUrl('not a url')).toBe(false)
    expect(isAllowedLoginUrl('')).toBe(false)
  })
})

// --- F1: isYtdlpUpdateChannel — --update-to allowlist -----------------------

describe('isYtdlpUpdateChannel (audit F1)', () => {
  it('accepts the two supported channels', () => {
    expect(isYtdlpUpdateChannel('stable')).toBe(true)
    expect(isYtdlpUpdateChannel('nightly')).toBe(true)
  })

  it('rejects an arbitrary repository spec (the --update-to RCE vector)', () => {
    expect(isYtdlpUpdateChannel('evil/yt-dlp@latest')).toBe(false)
    expect(isYtdlpUpdateChannel('owner/repo')).toBe(false)
  })

  it('rejects other yt-dlp channels not on AeroFetch’s allowlist', () => {
    expect(isYtdlpUpdateChannel('master')).toBe(false)
  })

  it('rejects non-string / empty values', () => {
    expect(isYtdlpUpdateChannel('')).toBe(false)
    expect(isYtdlpUpdateChannel(undefined)).toBe(false)
    expect(isYtdlpUpdateChannel(null)).toBe(false)
    expect(isYtdlpUpdateChannel(42)).toBe(false)
  })
})