GHA Code for Goose based PR - Google Gemini Provider

gha_goose_gemini.yaml

name: Goose

on:
  pull_request:
    types: [opened, synchronize, reopened, labeled]
  workflow_dispatch:
  
permissions:
  contents: write
  pull-requests: write
  issues: write

env:
  PROVIDER_API_KEY: ${{ secrets.GOOGLE_API_KEY }}
  PR_NUMBER: ${{ github.event.pull_request.number }}
  GH_TOKEN: ${{ github.token }}

jobs:
  goose-comment:
    name: Goose Comment
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Gather PR information
        run: |
          {
            echo "# Files Changed"
            gh pr view "$PR_NUMBER" --json files \
              -q '.files[] | "* " + .path + " (" + (.additions|tostring) + " additions, " + (.deletions|tostring) + " deletions)"'
            echo ""
            echo "# Changes Summary"
            gh pr diff "$PR_NUMBER"
          } > changes.txt

      - name: Install Goose CLI
        run: |
          mkdir -p /home/runner/.local/bin
          curl -fsSL https://github.com/block/goose/releases/download/stable/download_cli.sh \
            | CONFIGURE=false INSTALL_PATH=/home/runner/.local/bin bash
          echo "/home/runner/.local/bin" >> "$GITHUB_PATH"

      - name: Configure Goose
        run: |
          mkdir -p ~/.config/goose
          cat > ~/.config/goose/config.yaml <<'EOF'
          GOOSE_PROVIDER: google
          GOOSE_MODEL: gemini-2.0-flash-exp
          keyring: false
          EOF

      - name: Create instructions for Goose
        run: |
          cat > instructions.txt <<'EOF'
          Create a summary of the changes provided. Don't provide any session or logging details.
          The summary for each file should be brief and structured as:
          <filename/path (wrapped in backticks)>
             - dot points of changes
          You don't need any extensions, don't mention extensions at all.
          The changes to summarise are:
          EOF
          cat changes.txt >> instructions.txt

      - name: Test
        run: cat instructions.txt

      - name: Run Goose and filter output
        env:
          GOOGLE_API_KEY: ${{ secrets.GOOGLE_API_KEY }} 
        run: |
          goose run --instructions instructions.txt \
          | sed -E 's/\x1B\[[0-9;]*[mK]//g' \
          | grep -v "logging to /home/runner/.config/goose/sessions/" \
          | grep -v "^starting session" \
          | grep -v "^Closing session" \
          | sed 's/[[:space:]]*$//' \
          > pr_comment.txt

      - name: Post comment to PR
        run: |
          cat -A pr_comment.txt
          gh pr comment "$PR_NUMBER" --body-file pr_comment.txt