import test from 'brittle'
import {
  parseImageRef,
  normalizeDigest,
  digestsFromInspect,
  preferredRepoTag,
} from '../server/services/image-updates.js'

test('parseImageRef handles Docker Hub short names', (t) => {
  const r = parseImageRef('nginx:alpine')
  t.ok(r)
  t.is(r.registry, 'registry-1.docker.io')
  t.is(r.repository, 'library/nginx')
  t.is(r.tag, 'alpine')
  t.ok(r.isOfficial)
  t.absent(r.isPinned)
})

test('parseImageRef handles user/repo on Hub', (t) => {
  const r = parseImageRef('library/redis:7')
  t.is(r.repository, 'library/redis')
  t.is(r.tag, '7')
  t.is(r.host, 'docker.io')
})

test('parseImageRef handles ghcr and custom registries', (t) => {
  const g = parseImageRef('ghcr.io/org/app:1.2.3')
  t.is(g.registry, 'ghcr.io')
  t.is(g.repository, 'org/app')
  t.is(g.tag, '1.2.3')

  const c = parseImageRef('registry.example.com:5000/ns/img:v2')
  t.is(c.registry, 'registry.example.com:5000')
  t.is(c.repository, 'ns/img')
  t.is(c.tag, 'v2')
})

test('parseImageRef digests and bare ids', (t) => {
  const pinned = parseImageRef('nginx@sha256:abc123')
  t.ok(pinned.isPinned)
  t.is(pinned.digest, 'sha256:abc123')

  t.is(parseImageRef('sha256:deadbeef'), null)
  t.is(parseImageRef('a1b2c3d4e5f6'), null)
  t.is(parseImageRef(''), null)
  t.is(parseImageRef('<none>:<none>'), null)
})

test('parseImageRef defaults tag to latest', (t) => {
  const r = parseImageRef('postgres')
  t.is(r.tag, 'latest')
  t.is(r.repository, 'library/postgres')
})

test('normalizeDigest and digestsFromInspect', (t) => {
  t.is(normalizeDigest('sha256:abc'), 'sha256:abc')
  t.is(normalizeDigest('abc'), 'sha256:abc')
  t.is(normalizeDigest(''), null)

  const digests = digestsFromInspect({
    RepoDigests: [
      'nginx@sha256:1111111111111111111111111111111111111111111111111111111111111111',
      'docker.io/library/nginx@sha256:2222222222222222222222222222222222222222222222222222222222222222',
    ],
  })
  t.is(digests.length, 2)
  t.ok(digests[0].startsWith('sha256:'))
  t.is(preferredRepoTag({ RepoTags: ['<none>:<none>', 'nginx:alpine'] }), 'nginx:alpine')
  t.is(preferredRepoTag({ RepoTags: [] }), null)
})