import NpmGitDep from './NpmGitDep'
import getGitDeps from './getGitDeps'

export async function checkDependency(
  packageName: string,
  committish?: string,
  packageRoot = process.cwd()
) {
  const npmGitDep = await NpmGitDep.factory(
    packageName,
    committish,
    packageRoot
  )
  return npmGitDep.localSha === (await npmGitDep.getRemoteSha())
}

export async function* getOutdated(packageRoot = process.cwd()) {
  for await (const [packageName, committish] of getGitDeps(packageRoot))
    if (!(await checkDependency(packageName, committish, packageRoot)))
      yield packageName
}

export async function getLocalSha(
  packageName: string,
  committish?: string,
  packageRoot = process.cwd()
) {
  const npmGitDep = await NpmGitDep.factory(
    packageName,
    committish,
    packageRoot
  )
  return npmGitDep.localSha
}

export async function getRemoteSha(
  packageName: string,
  committish?: string,
  packageRoot = process.cwd()
) {
  const npmGitDep = await NpmGitDep.factory(
    packageName,
    committish,
    packageRoot
  )
  return npmGitDep.getRemoteSha()
}