java_pr_check.yml

name: GBFS Java Language Bindings - PR Version Update Check
on:
  pull_request:
    branches: 
        - master
    paths:
        - "models/java/**"
    
jobs:
    check-versions:
        name: check-version-job
        runs-on: ubuntu-latest
        outputs:
            has-version-changed: ${{ steps.version-change-check.outputs.VERSION_CHANGED }}
    
        steps:
            - name: Checkout repository
              uses: actions/checkout@v2
            
            - name: Set up JDK
              uses: actions/setup-java@v4
              with:
                java-version: '17.0.11'
                distribution: 'temurin'

            - name: Extract Version from Current Branch
              id: extract_version_current
              working-directory: models/java/gbfs-java-model
              run: echo "VERSION_CURRENT=$(mvn -q -Dexec.executable=echo -Dexec.args='${project.version}' --non-recursive exec:exec)" >> $GITHUB_OUTPUT

            - name: Checkout master branch
              run: |
                git fetch origin master
                git checkout master
            
            - name: Extract Version from Master Branch
              id: extract_version_master
              working-directory: models/java/gbfs-java-model
              run: echo "VERSION_MASTER=$(mvn -q -Dexec.executable=echo -Dexec.args='${project.version}' --non-recursive exec:exec)" >> $GITHUB_OUTPUT
            
            - name: Compare versions
              id: version-change-check
              env:
                local_version: ${{ steps.extract_version_current.outputs.VERSION_CURRENT }}
                master_version: ${{ steps.extract_version_master.outputs.VERSION_MASTER }}
              run: |
                if [ "$local_version" != "$master_version" ]; then
                    echo "Local branch version ($local_version) is different from master branch version ($master_version)"
                    echo "VERSION_CHANGED=true" >> $GITHUB_OUTPUT
                else
                    echo "Local branch version ($local_version) is the same as master branch version ($master_version)"
                    echo "Please update the models/java/gbfs-java-model/pom.xml version so that your changes will be published."
                    echo "VERSION_CHANGED=false" >> $GITHUB_OUTPUT
                fi

    github-pr-comment:
        name: pr comment to update pom.xml
        needs: [check-versions]
        if: needs.check-versions.outputs.has-version-changed == 'false'
        runs-on: ubuntu-latest

        steps:
            - name: Checkout code
              uses: actions/checkout@v2
            - name: Comment on PR to update pom.xml
              uses: actions/github-script@v7
              with:
                github-token: ${{ secrets.GITHUB_TOKEN }}
                script: |
                  github.rest.issues.createComment({
                    issue_number: context.issue.number,
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    body: 'Thank you for opening/editing this pull request. Please update the models/java/gbfs-java-model/pom.xml version so that your changes will be published.'
                  });
            - name: Fail the workflow
              run: exit 1