1import { getKlusterCtx } from '../../ctxF/klusterCtxF.mts'
2
3export const upstreamRegHosts = ['docker.io', 'ghcr.io', 'quay.io', 'registry.k8s.io', 'gcr.io']
4
5export const regcacheName = 'regcache'
6
7const splitImgHost = (image: string): {host: string | null, repoRef: string} => {
8  const firstSlash = image.indexOf('/')
9  if (firstSlash < 0) return {host: null, repoRef: image}
10  const first = image.slice(0, firstSlash)
11  if (first.includes('.') || first.includes(':') || first === 'localhost') return {host: first, repoRef: image.slice(firstSlash + 1)}
12  return {host: null, repoRef: image}
13}
14
15export const regcacheImgRef = ({image, cacheHost}: {image: string, cacheHost: string}): string => {
16  if (image.startsWith(`${cacheHost}/`)) return image
17  const {host, repoRef} = splitImgHost(image)
18  if (!host || host === 'docker.io' || host === 'index.docker.io') {
19    const repoPath = repoRef.includes('/') ? repoRef : `library/${repoRef}`
20    return `${cacheHost}/docker.io/${repoPath}`
21  }
22  if (!upstreamRegHosts.includes(host)) return image
23  return `${cacheHost}/${host}/${repoRef}`
24}
25
26export const getRegcacheTargetHost = (): string | undefined => {
27  const {regcacheEnabled, regcacheHost, regcacheLanHost} = getKlusterCtx()
28  if (!regcacheEnabled) return undefined
29  return regcacheLanHost || regcacheHost
30}
31