name: Create Release
run-name: Create release ${{ inputs.version }}

on:
  workflow_dispatch:
    inputs:
      version:
        description: 'Version for new release'
        required: true

permissions:
  contents: write
  pull-requests: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
    - name: Check out code
      uses: actions/checkout@v4
      with:
        ref: master
        fetch-depth: 0
        fetch-tags: true

    - name: Validate version
      id: validate
      run: |
        function ver { printf "%03d%03d%03d%03d" $(echo "$1" | tr '.' ' '); }

        NEW_VERSION=${{ inputs.version }}
        NEW_VERSION=${NEW_VERSION#v} # Remove v prefix

        LATEST_VERSION=$(git describe --abbrev=0 --tags)
        LATEST_VERSION=${LATEST_VERSION#v} # Remove v prefix

        # check that new version can be parsed
        if [ ! $(ver $NEW_VERSION ) -gt $(ver 0) ]; then
          echo "::error::Entered version '${{ inputs.version }}' cannot be parsed"
          exit 1
        fi

        # check version continuity
        if [ ! $(ver $LATEST_VERSION) -lt $(ver $NEW_VERSION) ]; then
          echo "::error::Entered version '${{ inputs.version }}' is smaller then latest version $LATEST_VERSION"
          exit 1
        fi

        echo "version=${NEW_VERSION}" >> "$GITHUB_OUTPUT"

    - name: Prepare Github Actions Bot
      run: |
        git config --local user.name "github-actions[bot]"
        git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
    
    - name: Setup node
      uses: actions/setup-node@v4
      with:
        node-version-file: docs/package.json
      
    - name: Update documentation
      run: |
        cd docs

        FULL_VERSION=${{ steps.validate.outputs.version }}
        VERSION=${FULL_VERSION%.*}.x

        if [ ! -d "versioned_docs/version-${VERSION}" ]; then
          npm install
          npm run docusaurus docs:version ${VERSION}

          git add .
          git commit -m "add new docs version ${VERSION}"
        fi

        sed -i "s/(current release is .*)/(current release is \`v${FULL_VERSION}\`)/g" docs/installation.md
        sed -i "s/(current release is .*)/(current release is \`v${FULL_VERSION}\`)/g" versioned_docs/version-${VERSION}/installation.md
    
    - name: Update Changelog
      run: |
        VERSION=${{ steps.validate.outputs.version }}

        sed -i "s/#.*(Pre-release)/# V${VERSION}/g" CHANGELOG.md

        cat << EOF > /tmp/CHANGELOG.prepend
        # Vx.x.x (Pre-release)

        ## Release Highlights

        ## Important Notes

        ## Breaking Changes

        ## Changes since v${VERSION}
        EOF

        echo -e "$(cat /tmp/CHANGELOG.prepend)\n\n$(cat CHANGELOG.md)" > CHANGELOG.md
    
    - name: Update development files
      run: |
        VERSION=${{ steps.validate.outputs.version }}
        cd contrib
        grep -rl "quay.io/oauth2-proxy/oauth2-proxy:" | \
          xargs sed -i "s#quay.io/oauth2-proxy/oauth2-proxy:v[0-9]\+\.[0-9]\+\.[0-9]\+#quay.io/oauth2-proxy/oauth2-proxy:v${VERSION}#g"

    - name: Commit and push
      run: |
        VERSION=${{ steps.validate.outputs.version }}

        git checkout -b release/v${VERSION}
        git commit -am "update to release version v${VERSION}"
        git push -u origin release/v${VERSION}
    
    - name: Create PR
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        VERSION=v${{ steps.validate.outputs.version }}
        gh pr create -B master -H release/${VERSION} --title "release ${VERSION}" --body "Release branch and changes created by GitHub Actions. This PR should include changes to the docs, CHANGELOG and local environment files."