on:
  schedule:
    - cron:  '41 8 * * *'

name: Update dependencies

jobs:
  update:
    name: Update dependencies
    runs-on: ubuntu-latest
    steps:
      - id: checkout
        name: Checkout code
        uses: actions/checkout@v2

      - id: java
        name: Install Java and Maven
        uses: actions/setup-java@v1
        with:
          java-version: 8

      - id: update_keycloak
        name: Update Keycloak
        run: |
          mvn -B versions:update-property -Dproperty=keycloak.version

      - id: vars
        name: Get project variables
        run: |
          echo -n "::set-output name=versionUpdated::"
          [ -f pom.xml.versionsBackup ] && echo 1 || echo 0
          echo -n "::set-output name=keycloakVersion::"
          mvn -q help:evaluate -Dexpression=keycloak.version -DforceStdout 2> /dev/null | grep -E '^[0-9a-zA-Z.-]+$'

      - id: check_branch
        name: Check if branch exists
        run: |
          echo -n "::set-output name=commit::"
          if [ '${{ steps.vars.outputs.versionUpdated }}' == '1' ]; then
            git ls-remote origin 'feature/keycloak-update-${{ steps.vars.outputs.keycloakVersion }}'
          else
            git rev-parse HEAD
          fi

      - id: reset_repo
        name: Reset repository
        if: steps.check_branch.outputs.commit == ''
        run: |
          git reset --hard

      - id: update_deps
        name: Update dependencies
        if: steps.check_branch.outputs.commit == ''
        run: |
          mvn versions:set -DnewVersion='${{ steps.vars.outputs.keycloakVersion }}'
          mvn versions:compare-dependencies \
            -DremotePom='org.keycloak:keycloak-parent:${{ steps.vars.outputs.keycloakVersion }}' \
            -DupdateDependencies=true -DupdatePropertyVersions=true
          mvn versions:use-latest-versions -DallowMajorUpdates=false

      - id: create_commit
        name: Create commit
        if: steps.check_branch.outputs.commit == ''
        run: |
          git add pom.xml
          git config user.name 'github-actions'
          git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
          git commit -m 'Update to Keycloak ${{ steps.vars.outputs.keycloakVersion }}'

      - id: create_branch
        name: Create branch
        if: steps.check_branch.outputs.commit == ''
        run: |
          git push origin 'HEAD:feature/keycloak-update-${{ steps.vars.outputs.keycloakVersion }}'

      - id: set_token
        name: Set access token
        if: steps.check_branch.outputs.commit == ''
        run: |
          echo -n "::set-env name=GH_TOKEN::"
          if [ '${{ secrets.GH_TOKEN }}' != '' ]; then
            echo '${{ secrets.GH_TOKEN }}'
          else
            echo '${{ secrets.GITHUB_TOKEN }}'
          fi

      - id: create_pull_request_default_token
        name: Create pull request
        if: steps.check_branch.outputs.commit == ''
        uses: actions/github-script@0.9.0
        with:
          github-token: ${{ env.GH_TOKEN }}
          script: |
            github.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              head: 'feature/keycloak-update-${{ steps.vars.outputs.keycloakVersion }}',
              base: 'master',
              title: 'Update to Keycloak ${{ steps.vars.outputs.keycloakVersion }}',
              body: 'Automatic dependency bump due to release of Keycloak ${{ steps.vars.outputs.keycloakVersion }}'
            })