name: Claude Code Assistant

on:
  issues:
    types: [opened, labeled]
  issue_comment:
    types: [created]

jobs:
  claude-code:
    if: >-
      (github.event_name == 'issues' &&
       contains(toJSON(github.event.issue.labels), 'claude')) ||
      (github.event_name == 'issue_comment' &&
       contains(github.event.comment.body, '@claude'))
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Run Claude on Issue
        env:
          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
          GIT_TOKEN: ${{ secrets.GIT_TOKEN }}
        run: |
          set -e

          # Configure git
          git config user.name "Claude Bot"
          git config user.email "claude@localhost"
          git remote set-url origin "http://admin:${GIT_TOKEN}@localhost:3000/${{ github.repository }}.git"

          # Extract issue info
          ISSUE_NUMBER="${{ github.event.issue.number }}"
          ISSUE_TITLE="${{ github.event.issue.title }}"
          REPO="${{ github.repository }}"

          # Fetch issue body via API
          ISSUE_BODY=$(curl -s "http://localhost:3000/api/v1/repos/${REPO}/issues/${ISSUE_NUMBER}" \
            -H "Authorization: token ${GIT_TOKEN}" | python3 -c "import sys,json; print(json.load(sys.stdin).get('body',''))")

          # Get comment body if triggered by comment
          COMMENT_BODY=""
          if [ "${{ github.event_name }}" = "issue_comment" ]; then
            COMMENT_ID="${{ github.event.comment.id }}"
            COMMENT_BODY=$(curl -s "http://localhost:3000/api/v1/repos/${REPO}/issues/comments/${COMMENT_ID}" \
              -H "Authorization: token ${GIT_TOKEN}" | python3 -c "import sys,json; print(json.load(sys.stdin).get('body',''))")
          fi

          # Create working branch
          BRANCH="claude/issue-${ISSUE_NUMBER}"
          git checkout -b "${BRANCH}"

          # Post status comment
          curl -s -X POST "http://localhost:3000/api/v1/repos/${REPO}/issues/${ISSUE_NUMBER}/comments" \
            -H "Authorization: token ${GIT_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "{\"body\": \"Claude is working on this issue...\"}"

          # Build the prompt
          PROMPT=$(cat <<'PROMPT_EOF'
          You are working on a code repository. A Gitea issue needs your attention.
          PROMPT_EOF
          )

          PROMPT="You are working on the repository ${REPO}.
          A Gitea issue needs your attention:

          Issue #${ISSUE_NUMBER}: ${ISSUE_TITLE}
          Description: ${ISSUE_BODY}

          Additional context from comment: ${COMMENT_BODY}

          Instructions:
          1. Read and understand the codebase structure
          2. Implement the requested changes carefully
          3. Make sure the code is correct and complete
          4. Commit all changes with a descriptive commit message

          You are on branch ${BRANCH}. Work in the current directory."

          # Run Claude Code in non-interactive mode
          claude -p "${PROMPT}" \
            --allowedTools "Bash,Read,Edit,Write,Glob,Grep" \
            --mcp-config /home/claude-runner/.claude/mcp-gitea.json \
            --max-turns 50 \
            --permission-mode bypassPermissions \
            --output-format text > /tmp/claude-output.txt 2>&1 || true

          echo "=== Claude Output ==="
          cat /tmp/claude-output.txt
          echo "=== End Output ==="

          # Stage any remaining unstaged changes
          git add -A

          # Check if there are changes
          if ! git diff --cached --quiet 2>/dev/null || [ "$(git log origin/main..HEAD --oneline 2>/dev/null | wc -l)" -gt 0 ]; then
            # Commit if there are staged changes
            git diff --cached --quiet 2>/dev/null || git commit -m "Claude: Address issue #${ISSUE_NUMBER} - ${ISSUE_TITLE}"

            # Push
            git push origin "${BRANCH}"

            # Create PR
            PR_RESPONSE=$(curl -s -X POST "http://localhost:3000/api/v1/repos/${REPO}/pulls" \
              -H "Authorization: token ${GIT_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "{
                \"title\": \"Claude: Fix #${ISSUE_NUMBER} - ${ISSUE_TITLE}\",
                \"body\": \"Automated PR by Claude Code for issue #${ISSUE_NUMBER}\n\nCloses #${ISSUE_NUMBER}\",
                \"head\": \"${BRANCH}\",
                \"base\": \"main\"
              }")

            PR_URL=$(echo "${PR_RESPONSE}" | python3 -c "import sys,json; print(json.load(sys.stdin).get('html_url',''))" 2>/dev/null || echo "")

            # Comment with PR link
            curl -s -X POST "http://localhost:3000/api/v1/repos/${REPO}/issues/${ISSUE_NUMBER}/comments" \
              -H "Authorization: token ${GIT_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "{\"body\": \"Claude has created a pull request: ${PR_URL}\"}"
          else
            curl -s -X POST "http://localhost:3000/api/v1/repos/${REPO}/issues/${ISSUE_NUMBER}/comments" \
              -H "Authorization: token ${GIT_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "{\"body\": \"Claude reviewed the issue but made no code changes.\"}"
          fi