name: publish

on:
  pull_request:
    branches:
      - master
    types: [closed]

env:
  CI: true
  ACTIONS_ALLOW_UNSECURE_COMMANDS: true

jobs:
  publish:
    runs-on: ubuntu-latest
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Pull Request Merged
        if: github.event.pull_request.merged == false
        run: |
          echo 'The pull request has not been merged'
          exit 1

      - uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Set git config
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com

      - name: Use Node.js
        uses: actions/setup-node@v2
        with:
          node-version: 16.x
          registry-url: "https://registry.npmjs.org"

      - name: Setup .npmrc
        shell: bash
        run: |
          npm set //registry.npmjs.org/:_authToken=$NODE_AUTH_TOKEN
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NODE_AUTH_TOKEN }}

      - name: Ensure access
        shell: bash
        run: npm whoami --registry https://registry.npmjs.org/
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NODE_AUTH_TOKEN }}

      - name: Install global dependencies
        run: npm i standard-version -g

      - name: Install dependencies
        run: npm i

      - name: Get Prev Version
        shell: bash -ex {0}
        run: |
          PREV_VERSION=$(node -p 'require("./package.json").version')
          echo "::set-env name=PREV_VERSION::${PREV_VERSION}"

      - name: Bump version
        run: |
          standard-version

      - name: Get Current Version
        shell: bash -ex {0}
        run: |
          CURRENT_VERSION=$(node -p 'require("./package.json").version')
          echo "::set-env name=CURRENT_VERSION::${CURRENT_VERSION}"

      - name: Publish
        if: env.PREV_VERSION != env.CURRENT_VERSION
        run: |
          npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NODE_AUTH_TOKEN }}

      - name: Push changes
        uses: ad-m/github-push-action@v0.6.0
        if: env.PREV_VERSION != env.CURRENT_VERSION
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ github.ref }}
          tags: true

      - name: Create comment
        uses: actions/github-script@0.8.0
        if: env.PREV_VERSION != env.CURRENT_VERSION
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            github.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: 'NPM package v${{ env.CURRENT_VERSION }} has been published 🎉'
            })