#!/bin/groovy

return

def MAXIMUM_COMMITS_TO_CHECK = 10
def MAXIMUM_COMMITS_TO_BUILD = 5

if (!params.branches_yaml) {
  error "'branches_yaml' parameter must be specified"
}

def additionalBranches = []

def branches = readYaml(text: params.branches_yaml) + additionalBranches

library 'kibana-pipeline-library'
kibanaLibrary.load()

withGithubCredentials {
  branches.each { branch ->
    if (branch == '6.8') {
      // skip 6.8, it is tracked but we don't need snapshots for it and haven't backported
      // the baseline capture scripts to it.
      return;
    }

    stage(branch) {
      def commits = getCommits(branch, MAXIMUM_COMMITS_TO_CHECK, MAXIMUM_COMMITS_TO_BUILD)

      commits.take(MAXIMUM_COMMITS_TO_BUILD).each { commit ->
        catchErrors {
          githubCommitStatus.create(commit, 'pending', 'Baseline started.', 'kibana-ci-baseline')

          build(
            propagate: false,
            wait: false,
            job: 'elastic+kibana+baseline-capture',
            parameters: [
              string(name: 'branch_specifier', value: branch),
              string(name: 'commit', value: commit),
            ]
          )
        }
      }
    }
  }
}

def getCommits(String branch, maximumCommitsToCheck, maximumCommitsToBuild) {
  print "Getting latest commits for ${branch}..."
  def commits = githubApi.get("repos/elastic/kibana/commits?sha=${branch}").take(maximumCommitsToCheck).collect { it.sha }
  def commitsToBuild = []

  for (commit in commits) {
    print "Getting statuses for ${commit}"
    def status = githubApi.get("repos/elastic/kibana/statuses/${commit}").find { it.context == 'kibana-ci-baseline' }
    print "Commit '${commit}' already built? ${status ? 'Yes' : 'No'}"

    if (!status) {
      commitsToBuild << commit
    } else {
      // Stop at the first commit we find that's already been triggered
      break
    }

    if (commitsToBuild.size() >= maximumCommitsToBuild) {
      break
    }
  }

  return commitsToBuild.reverse() // We want the builds to trigger oldest-to-newest
}