deployment-update.yaml

name: Set deployment version

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Version to deploy"
        required: true
      deployment:
        description: "Deployment to update"
        required: true

concurrency:
  group: ${{ github.workflow }}-${{ inputs.deployment }}-${{ inputs.version }}
  cancel-in-progress: true

jobs:
  set-deployment-version:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    env:
      VALUES_FILE: "helm/codestar/values.yaml"
      DEPLOYMENT_TAG_KEY: ".${{ inputs.deployment }}.deployment.image.tag"
      TAG: ${{ inputs.version }}
      BRANCH: deployment-update-${{ inputs.deployment }}-${{ inputs.version }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set deployment version
        id: set_version
        uses: mikefarah/yq@v4
        with:
          cmd: |
            old_tag="$(yq e "${{ env.DEPLOYMENT_TAG_KEY }}" "${{ env.VALUES_FILE }}")"
            yq e -i '${{ env.DEPLOYMENT_TAG_KEY }} = "${{ env.TAG }}"' ${{ env.VALUES_FILE }}
  
            echo "Updated deployment version from $old_tag to ${{ env.TAG }}"
            echo "old_tag=$old_tag" >> $GITHUB_OUTPUT
            echo "new_tag=${{ env.TAG }}" >> $GITHUB_OUTPUT

      - name: Create pull request
        id: create_pr
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "Update deployment version of ${{ inputs.deployment }} to ${{ inputs.version }}"
          title: "Update deployment version of ${{ inputs.deployment }} to ${{ inputs.version }}"
          body: "This PR updates the deployment version of ${{ inputs.deployment }} to ${{ inputs.version }}, please review and merge."
          branch: ${{ env.BRANCH }}
          base: main
          labels: "deployment-update"

      - name: Display pull request information
        if: ${{ steps.create_pr.outputs.pull-request-number }}
        run: |
          echo "Pull Request Number - ${{ steps.create_pr.outputs.pull-request-number }}"
          echo "Pull Request URL - ${{ steps.create_pr.outputs.pull-request-url }}"

      - name: Determie if bump is major
        id: determine_bump
        run: |
          old_tag_major=$(echo ${{ steps.set_version.outputs.old_tag }} | cut -d '.' -f 1)
          new_tag_major=$(echo ${{ steps.set_version.outputs.new_tag }} | cut -d '.' -f 1)
          if [ "$old_tag_major" -ne "$new_tag_major" ]; then
            echo "Major bump detected"
            echo "major_bump=true" >> $GITHUB_OUTPUT
          else
            echo "No major bump detected"
            echo "major_bump=false" >> $GITHUB_OUTPUT
          fi
      
      - name: Accept pull request if no major bump
        if: ${{ steps.determine_bump.outputs.major_bump == 'false' }}
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const prNumber = ${{ steps.create_pr.outputs.pull-request-number }};

            const pullRequest = await github.rest.pulls.get({
              owner: owner,
              repo: repo,
              pull_number: prNumber
            });
            const prBranch = pullRequest.data.head.ref;

            if (pullRequest.data.state === 'open') {
              // Merge the pull request
              await github.rest.pulls.merge({
                owner: owner,
                repo: repo,
                pull_number: prNumber,
                merge_method: 'squash'
              });

              // Delete the branch
              await github.rest.git.deleteRef({
                owner: owner,
                repo: repo,
                ref: `heads/${prBranch}`
              });

              console.log(`Pull request ${prNumber} merged successfully`);
            }
            else {
              console.log(`Pull request ${prNumber} is not open`);
            }