name: Slash Command Action

on:
  issue_comment:
    types: [created]

jobs:
  changelog:
    if: |
      github.event.issue.pull_request
      && contains(github.event.comment.body, '/changelog create')
      && (github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER' || github.event.comment.author_association == 'COLLABORATOR')
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Parse changelog command
        id: parse_command
        run: |
          # Extract the full command body
          command_body="${{ github.event.comment.body }}"

          # Remove the command prefix to get the arguments
          # The regex 's' modifier allows the dot to match newlines
          # and the 'm' modifier allows '^' to match at the beginning of each line
          # This handles commands spanning multiple lines
          parsed_body=$(echo "$command_body" | sed -E 's/\/changelog create -t ([a-z]+) (.*)$/\1|\2/')

          # The parsed output will be 'type|message'
          changelog_type=$(echo "$parsed_body" | cut -d'|' -f1)
          message=$(echo "$parsed_body" | cut -d'|' -f2)

          # Set outputs for use in later steps
          echo "changelog_type=$changelog_type" >> $GITHUB_OUTPUT
          echo "message=$message" >> $GITHUB_OUTPUT

      # check out our repo and install our requirements
      - uses: actions/checkout@v4
        with:
          # issue_comment event runs on main, we need to checkout the PR
          ref: refs/pull/${{ github.event.issue.number }}/head
          fetch-depth: 0
      - name: Setup python
        uses: actions/setup-python@v4
        with:
          python-version: 3.13
          architecture: x64
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt

      # add the changelog entry
      - name: Changelog Create
        id: changelog
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"

          sha=$(git rev-parse HEAD)
          echo "sha=$sha"
          # the origin one is where we need to push to, other two aren't useful
          branch=$(git branch --all --contains $SHA | grep origin | sed 's#^.*origin/##;s/[[:space:]]*$//')
          echo "branch=$branch"

          ./script/changelog create -c -t "${{ steps.parse_command.outputs.changelog_type }}" "${{ steps.parse_command.outputs.message }}"

          git push origin HEAD:"$branch"