import { GitDataProps, RepoData } from '../types'
import * as log from './log_messages'

export function getGitData(props: GitDataProps): RepoData {
  return {
    branch: props.branch,
    owner: getOwner(props),
    repo: getRepo(props),
  }
}

function getOwner(props: GitDataProps) {
  return props.owner || (props.pkg && getOwnerPkgJson(props.pkg)) || noOwner()
}

function getOwnerPkgJson(pkg: any) {
  const repoUrl = pkg.repository && pkg.repository.url
  const isGithubUrl = repoUrl && repoUrl.indexOf('github.com') > -1
  return isGithubUrl && getOwnerFromURL(repoUrl)
}

function getOwnerFromURL(url: string) {
  const path = url.substring(url.indexOf('github.com') + 10)
  return path.substring(1, path.indexOf('/', 1))
}

function noOwner() {
  log.noOwnerFound()
  return 'noOwner'
}

function getRepo(props: GitDataProps) {
  return props.repo || (props.pkg && getRepoPkgJson(props.pkg)) || noRepo()
}

function getRepoPkgJson(pkg: any) {
  const repoUrl = pkg.repository && pkg.repository.url
  const isGithubUrl = repoUrl && repoUrl.indexOf('github.com') > -1
  const repoUrlRepoName = isGithubUrl && getRepoFromURL(repoUrl)
  return repoUrlRepoName || (pkg.name as string)
}

function noRepo() {
  log.noGitRepoFound()
  return `noRepo`
}

function getRepoFromURL(url: string) {
  const path = url.substring(url.indexOf('github.com') + 10)
  return path.slice(path.indexOf('/', 1) + 1, path.indexOf('.git'))
}