name: Tag Release & Push Gem & Docker

on: workflow_dispatch

permissions:
  contents: write
  issues: read
  pull-requests: read
  packages: write

jobs:
  release:
    name: Validate Docs, Tag, and Docker Push
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        ref: ${{ github.ref }}
        clean: true
        fetch-depth: 0

    - name: Get New Version
      id: nv
      run: |
        version=$(grep VERSION lib/vmfloaty/version.rb |rev |cut -d "'" -f2 |rev)
        echo "version=$version" >> $GITHUB_OUTPUT
        echo "Found version $version from lib/vmfloaty/version.rb"

    - name: Get Current Version
      uses: actions/github-script@v6
      id: cv
      with:
        script: |
          const { data: response } = await github.rest.repos.getLatestRelease({
            owner: context.repo.owner,
            repo: context.repo.repo,
          })
          console.log(`The latest release is ${response.tag_name}`)
          return response.tag_name
        result-encoding: string

    - name: Generate Changelog
      uses: docker://githubchangeloggenerator/github-changelog-generator:1.16.2
      with:
        args: >-
          --future-release ${{ steps.nv.outputs.version }}
      env:
        CHANGELOG_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Validate Changelog
      run : |
        set -e
        if output=$(git status --porcelain) && [ ! -z "$output" ]; then
          echo "Here is the current git status:"
          git status
          echo
          echo "The following changes were detected:"
          git --no-pager diff
          echo "Uncommitted PRs found in the changelog. Please submit a release prep PR of changes after running './release-prep ${{ steps.nv.outputs.version }}'"
          exit 1
        fi

    - name: Generate Release Notes
      uses: docker://githubchangeloggenerator/github-changelog-generator:1.16.2
      with:
        args: >-
          --since-tag ${{ steps.cv.outputs.result }}
          --future-release ${{ steps.nv.outputs.version }}
          --output release-notes.md
      env:
        CHANGELOG_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Tag Release
      uses: ncipollo/release-action@v1
      with:
        tag: ${{ steps.nv.outputs.version }}
        token: ${{ secrets.GITHUB_TOKEN }}
        bodyfile: release-notes.md
        draft: false
        prerelease: false

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v3
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Build and push
      uses: docker/build-push-action@v4
      with:
        push: true
        tags: |
          ghcr.io/${{ github.repository }}:${{ steps.nv.outputs.version }}
          ghcr.io/${{ github.repository }}:latest

    - name: Set up Ruby 3.2
      uses: actions/setup-ruby@v1
      with:
        version: 3.2.x

    - name: Build gem
      run: gem build *.gemspec

    - name: Publish gem
      run: |
        mkdir -p $HOME/.gem
        touch $HOME/.gem/credentials
        chmod 0600 $HOME/.gem/credentials
        printf -- "---\n:rubygems_api_key: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
        gem push *.gem
      env:
        GEM_HOST_API_KEY: ${{secrets.RUBYGEMS_AUTH_TOKEN}}