name: Claude Issue Dedupe
description: Automatically dedupe GitHub issues using Claude Code
on:
  issues:
    types: [opened]
  workflow_dispatch:
    inputs:
      issue_number:
        description: 'Issue number to process for duplicate detection'
        required: true
        type: string

jobs:
  claude-dedupe-issues:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: read
      issues: write
      # Required to mint the OIDC token exchanged for a Claude API access token (Workload Identity Federation)
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Run Claude Code slash command
        uses: anthropics/claude-code-action@v1
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          CLAUDE_CODE_SCRIPT_CAPS: '{"comment-on-duplicates.sh":1}'
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          allowed_non_write_users: "*"
          prompt: "/dedupe ${{ github.repository }}/issues/${{ github.event.issue.number || inputs.issue_number }}"
          # Authenticate to the Claude API via Workload Identity Federation
          # (the workflow's OIDC token is exchanged for a short-lived access
          # token) instead of a static API key.
          anthropic_federation_rule_id: ${{ vars.ANTHROPIC_FEDERATION_RULE_ID }}
          anthropic_organization_id: ${{ vars.ANTHROPIC_ORGANIZATION_ID }}
          anthropic_service_account_id: ${{ vars.ANTHROPIC_SERVICE_ACCOUNT_ID }}
          anthropic_workspace_id: ${{ vars.ANTHROPIC_WORKSPACE_ID }}
          claude_args: "--model claude-sonnet-4-5-20250929"

      - name: Log duplicate comment event to Statsig
        if: always()
        env:
          STATSIG_API_KEY: ${{ secrets.STATSIG_API_KEY }}
          ISSUE_NUMBER: ${{ github.event.issue.number || inputs.issue_number }}
          REPO: ${{ github.repository }}
          TRIGGERED_BY: ${{ github.event_name }}
          WORKFLOW_RUN_ID: ${{ github.run_id }}
        run: |
          if [ -z "$STATSIG_API_KEY" ]; then
            echo "STATSIG_API_KEY not found, skipping Statsig logging"
            exit 0
          fi
          
          # Prepare the event payload
          EVENT_PAYLOAD=$(jq -n \
            --arg issue_number "$ISSUE_NUMBER" \
            --arg repo "$REPO" \
            --arg triggered_by "$TRIGGERED_BY" \
            --arg workflow_run_id "$WORKFLOW_RUN_ID" \
            '{
              events: [{
                eventName: "github_duplicate_comment_added",
                value: 1,
                metadata: {
                  repository: $repo,
                  issue_number: ($issue_number | tonumber),
                  triggered_by: $triggered_by,
                  workflow_run_id: $workflow_run_id
                },
                time: (now | floor | tostring)
              }]
            }')
          
          # Send to Statsig API
          echo "Logging duplicate comment event to Statsig for issue #${ISSUE_NUMBER}"
          
          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST https://events.statsigapi.net/v1/log_event \
            -H "Content-Type: application/json" \
            -H "STATSIG-API-KEY: ${STATSIG_API_KEY}" \
            -d "$EVENT_PAYLOAD")
          
          HTTP_CODE=$(echo "$RESPONSE" | tail -n1)
          BODY=$(echo "$RESPONSE" | head -n-1)
          
          if [ "$HTTP_CODE" -eq 200 ] || [ "$HTTP_CODE" -eq 202 ]; then
            echo "Successfully logged duplicate comment event for issue #${ISSUE_NUMBER}"
          else
            echo "Failed to log duplicate comment event for issue #${ISSUE_NUMBER}. HTTP ${HTTP_CODE}: ${BODY}"
          fi
