set-milestone-on-pr.yml

#
# Copyright (c) 2020 Red Hat, Inc.  and others.
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License v. 2.0 which is available at
# http://www.eclipse.org/legal/epl-2.0.
#
# This Source Code may also be made available under the following Secondary
# Licenses when the conditions for such availability set forth in the Eclipse
# Public License v. 2.0 are satisfied: GNU General Public License, version 2
# with the GNU Classpath Exception which is available at
# https://www.gnu.org/software/classpath/license.html.
#
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0

# Set milestone on each pull request by using the next minor version
# next version is computed using npm version tool
on:
  pull_request_target:
    branches: [master]
    types: [closed]

jobs:
  set-milestone:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout code
        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
      - id: compute-milestone
        run: |
          export THEIA_CORE_VERSION=$(node -p "require(\"./packages/core/package.json\").version")
          echo "MILESTONE_NUMBER=$(npx -q semver@7 --increment minor $THEIA_CORE_VERSION)" >> $GITHUB_ENV
      - id: set
        uses: actions/github-script@ffc2c79a5b2490bd33e0a41c1de74b877714d736 # v3.2.0
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            // get milestone
            const milestone = process.env.MILESTONE_NUMBER
            console.log(`Using milestone with name ${milestone}`)
            // check if milestone exists ?
            const issuesGetMilestonesParams = context.repo

            // search if milestone is already defined
            const response = await github.issues.listMilestones(issuesGetMilestonesParams)
            let githubMilestone = response.data.find(milestoneResponse => milestoneResponse.title === milestone)

            // not defined, create it
            if (!githubMilestone) {
              const issuesCreateMilestoneParams = { owner: context.repo.owner, repo:context.repo.repo, title: milestone }
              const createMilestoneResponse = await github.issues.createMilestone(issuesCreateMilestoneParams)
              githubMilestone = createMilestoneResponse.data
            }

            // Grab the milestone number
            const milestoneNumber = githubMilestone.number

            // sets the milestone from the number
            const issuesUpdateParams = { owner: context.repo.owner, repo: context.repo.repo, milestone: milestoneNumber, issue_number: context.issue.number }
            await github.issues.update(issuesUpdateParams)