create-github-pr.yml

name: Create Github PR for OpenAPI Spec

on:
  release:
    types: [published]

jobs:
  create-github-pr:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Fetch Latest release number
        id: get_latest_release_number
        run: |
          latest_version=$(gh release view --json tagName --jq '.tagName')
          echo "Latest release version is - $latest_version"
          echo "releaseVersion=$latest_version" >> $GITHUB_OUTPUT
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Set up branch name
        id: identify_branch_name
        run: |
          branch_name='OAS-version-update-${{steps.get_latest_release_number.outputs.releaseVersion}}'
          echo "branchName=$branch_name" >> $GITHUB_OUTPUT

      - name: Checkout branch
        run: |
          if git ls-remote --heads origin ${{steps.identify_branch_name.outputs.branchName}} | grep -q "refs/heads/${{steps.identify_branch_name.outputs.branchName}}"; then
            echo "checking out existing branch"
            git fetch origin > /dev/null 2>&1
            git checkout ${{steps.identify_branch_name.outputs.branchName}} 
          else
            echo "branch does not exists, creating new branch"
            echo "branchName *****>> ${{steps.identify_branch_name.outputs.branchName}}"
            git checkout -b ${{steps.identify_branch_name.outputs.branchName}}
          fi

      - name: Update OAS version of the spec yaml files
        run: |
          for file in xero_accounting.yaml xero_assets.yaml xero_bankfeeds.yaml xero_files.yaml xero-app-store.yaml xero-finance.yaml xero-identity.yaml xero-payroll-au.yaml xero-payroll-nz.yaml xero-payroll-uk.yaml xero-projects.yaml; do
            yq eval --no-colors --prettyPrint ".info.version = \"${{steps.get_latest_release_number.outputs.releaseVersion}}\"" -i "$file"
           echo "updated version in $file"
          done

      - name: Staging & commiting
        id: detect-changes
        run: |
          CHANGES_DETECTED=$(git diff)
          if [ -z "$CHANGES_DETECTED" ]; then
            echo "no new changes, nothing to commit"
            echo "changes_detected=false" >> $GITHUB_OUTPUT
          else
            echo "changes_detected=true" >> $GITHUB_OUTPUT
            echo "running the git commands......"

            git branch

            echo "git status 1"
            git status
                    
            echo 'staging the changes'
            git add --all
                    
            echo 'git status'
            git diff
                    
            echo "git config setup"
            git config --global user.name "Github Actions"
            git config --global user.email "actions@github.com"
                    
            echo 'commiting changes....'
            git commit -m "chore: version update for all the yaml files" 
          fi

      - name: Pushing the Branch
        run: |
          if [ "${{steps.detect-changes.outputs.changes_detected}}" == "true" ]; then
            echo "pushing the code to ${{steps.identify_branch_name.outputs.branchName}}"
            git branch
            git push origin ${{steps.identify_branch_name.outputs.branchName}} 
          else 
            echo "branch is already up to date"
          fi

      - name: Create PR
        run: |
          if [ "${{steps.detect-changes.outputs.changes_detected}}" == "true" ]; then
            echo "Creating PR in ${{steps.identify_branch_name.outputs.branchName}}"
            gh pr create \
              --title "OAS version update - ${{steps.get_latest_release_number.outputs.releaseVersion}}" \
              --base master \
              --head ${{steps.identify_branch_name.outputs.branchName}} \
              --body "chore: version update for all the yaml files"
          else
            echo "PR is already up to date"
          fi
        env:
          GH_TOKEN: ${{ github.token }}