link_labs.yml

name: Post link to lab

on:
  pull_request:
    types: [opened, synchronize]

jobs:
  post-comment:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Set up Git
        run: git fetch origin main

      - name: Get list of changed files
        id: changed-files
        run: |
          git diff --name-only origin/main...HEAD > changed_files.txt
          cat changed_files.txt

      - name: Post comment if matching changes found
        if: contains(steps.changed-files.outputs.changes, './communities/')
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          declare -A directories
          FILES=$(cat changed_files.txt)
          PR_NUMBER="${{ github.event.number }}"
          USERNAME="${{ github.actor }}"
          BRANCH_NAME="${{ github.head_ref }}"

          for FILE in $FILES; do
            if [[ "$FILE" == ./my/repo/path/*/lab/* ]]; then
              NAME=$(echo "$FILE" | cut -d'/' -f5)
              # Check if this directory has already been processed
              if [[ -z "${directories[$NAME]}" ]]; then
                directories[$NAME]=1
                COMMENT=$(cat <<EOF
                ### Preview changes to ${NAME} Lab

                https://labs.usegalaxy.org.au/?content_root=https://github.com/${USERNAME}/galaxy_codex/blob/${BRANCH_NAME}/communities/${NAME}/lab/base.yml

                - [usegalaxy.org.yml](https://labs.usegalaxy.org.au/?content_root=https://github.com/${USERNAME}/galaxy_codex/blob/${BRANCH_NAME}/communities/${NAME}/lab/usegalaxy.org.yml)
                - [usegalaxy.eu.yml](https://labs.usegalaxy.org.au/?content_root=https://github.com/${USERNAME}/galaxy_codex/blob/${BRANCH_NAME}/communities/${NAME}/lab/usegalaxy.eu.yml)
                - [usegalaxy.org.au.yml](https://labs.usegalaxy.org.au/?content_root=https://github.com/${USERNAME}/galaxy_codex/blob/${BRANCH_NAME}/communities/${NAME}/lab/usegalaxy.org.au.yml)

                EOF
                )
                gh pr comment "$PR_NUMBER" --body "$COMMENT"
              fi
            fi
          done