name: release

on:
  push:
    branches-ignore:
      - '**'
    tags:
      - 'v*.*.*'

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v1
      -
        name: Prepare
        id: prepare
        run: |
          TAG=${GITHUB_REF#refs/tags/}
          MINOR=${TAG%.*}
          MAJOR=${MINOR%.*}
          echo ::set-output name=tag_name::${TAG}
          echo ::set-output name=minor_tag::${MINOR}
          echo ::set-output name=major_tag::${MAJOR}
          echo ::set-output name=major_exists::$(git show-ref origin/releases/${MAJOR})
      -
        name: Set up Git
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git config user.name "${GITHUB_ACTOR}"
          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
          git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
      -
        name: Checkout releases/${{ steps.prepare.outputs.major_tag }} branch
        run: |
          git checkout -B releases/${{ steps.prepare.outputs.major_tag }}
          if [ -n "${{ steps.prepare.outputs.major_exists }}" ]; then
            git branch --set-upstream-to=origin/releases/${{ steps.prepare.outputs.major_tag }} releases/${{ steps.prepare.outputs.major_tag }}
          fi
      -
        name: NPM production deps
        run: |
          rm -rf node_modules
          sed -i '/node_modules/d' .gitignore
          npm install --production
      -
        name: Commit and push changes
        run: |
          git add --all
          git status --short -uno
          git commit -m 'Release ${{ steps.prepare.outputs.tag_name }}'
          git show --stat-count=10 HEAD
          git push -f origin releases/${{ steps.prepare.outputs.major_tag }}
      -
        name: Update ${{ steps.prepare.outputs.minor_tag }} tag
        run: |
          git push origin :refs/tags/${{ steps.prepare.outputs.minor_tag }}
          git tag -fa ${{ steps.prepare.outputs.minor_tag }} -m "Release ${{ steps.prepare.outputs.tag_name }}"
          git push origin ${{ steps.prepare.outputs.minor_tag }}
      -
        name: Update ${{ steps.prepare.outputs.major_tag }} tag
        run: |
          git push origin :refs/tags/${{ steps.prepare.outputs.major_tag }}
          git tag -fa ${{ steps.prepare.outputs.major_tag }} -m "Release ${{ steps.prepare.outputs.tag_name }}"
          git push origin ${{ steps.prepare.outputs.major_tag }}