name: Compile Command
on:
  issue_comment:
    types: [created]

jobs:
  compile:
    runs-on: ubuntu-latest

    # On pull requests and if the comment starts with `/compile`
    if: github.event.issue.pull_request != '' && startsWith(github.event.comment.body, '/compile')

    steps:
      - name: Add reaction on start
        uses: peter-evans/create-or-update-comment@v1
        with:
          token: ${{ secrets.COMMAND_BOT_PAT }}
          repository: ${{ github.event.repository.full_name }}
          comment-id: ${{ github.event.comment.id }}
          reaction-type: "+1"

      - name: Init arguments
        # Init arguments
        run: |
          command="${{ github.event.comment.body }}"
          arguments=($command)
          echo "arg1=${arguments[1]}" >> "$GITHUB_ENV"
          echo "arg2=${arguments[2]}" >> "$GITHUB_ENV"

      - name: Init path
        # Init path depending on which command is run
        run: |    
          if ${{ startsWith(env.arg1, '/') }}; then
            echo "git_path=${{ github.workspace }}${{env.arg1}}" >> "$GITHUB_ENV"
          else
            echo "git_path=${{ github.workspace }}${{env.arg2}}" >> "$GITHUB_ENV"
          fi

      - name: Init branch
        uses: xt0rted/pull-request-comment-branch@v1
        id: comment-branch

      - name: Checkout
        uses: actions/checkout@v2
        with:
          token: ${{ secrets.COMMAND_BOT_PAT }}
          fetch-depth: 0
          ref: ${{ steps.comment-branch.outputs.head_ref }}
      
      - name: Read package.json node and npm engines version
        uses: skjnldsv/read-package-engines-version-actions@v1
        id: package-engines-versions
        with:
          fallbackNode: '^12'
          fallbackNpm: '^6'

      - name: Set up node ${{ steps.package-engines-versions.outputs.nodeVersion }}
        uses: actions/setup-node@v2
        with:
          node-version: ${{ steps.package-engines-versions.outputs.nodeVersion }}
          cache: npm

      - name: Set up npm ${{ steps.package-engines-versions.outputs.npmVersion }}
        run: npm i -g npm@"${{ steps.package-engines-versions.outputs.npmVersion }}"

      - name: Install dependencies & build
        run: |
          npm ci
          npm run build --if-present

      - name: Setup git
        run: |
          git config --local user.email "npmbuildbot-nextcloud[bot]@users.noreply.github.com"
          git config --local user.name "npmbuildbot-nextcloud[bot]"

      - name: Commit and push default
        # If the first argument starts with a /
        if: ${{ startsWith(env.arg1, '/') }}
        run: |
          git add ${{ env.git_path }}
          git commit --signoff -m 'Compile assets'
          git push origin ${{ env.ref }}

      - name: Commit and push fixup
        if: ${{ env.arg1 == 'fixup' }}
        run: |
          git add ${{ env.git_path }}
          git commit --fixup=HEAD --signoff
          git push origin ${{ env.ref }}

      - name: Commit and push amend
        if: ${{ env.arg1 == 'amend' }}
        run: |
          git add ${{ env.git_path }}
          git commit --amend --no-edit --signoff
          git push --force origin ${{ env.ref }}

      - name: Add reaction on failure
        uses: peter-evans/create-or-update-comment@v1
        if: failure()
        with:
          token: ${{ secrets.COMMAND_BOT_PAT }}
          repository: ${{ github.event.repository.full_name }}
          comment-id: ${{ github.event.comment.id }}
          reaction-type: "-1"