set-milestone-on-pr.yml

on:
  pull_request:
    branches: [master]
    types: [closed]

jobs:
  set-milestone:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-20.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Compute milestone
        run: |
          echo "MILESTONE_NUMBER=$(./mvnw -q -Dexec.executable=echo -Dexec.args='${project.version}' --non-recursive  exec:exec | cut -d- -f1)" >> $GITHUB_ENV
      - name: Set milestone
        uses: actions/github-script@v7
        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)

            // Create if doesn't exist
            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)