check-duplicate-issues.yml

name: Check for Duplicate Issues

on:
  issues:
    types: [opened]

jobs:
  check_duplicate:
    runs-on: ubuntu-latest

    steps:
    - name: Check out repository
      uses: actions/checkout@v3

    - name: Install jq
      run: sudo apt-get update && sudo apt-get install -y jq

    - name: Search for existing issues
      id: search_issues
      run: |
        # URL encode the issue title (replace spaces with %20)
        issue_title=$(echo "${{ github.event.issue.title }}" | sed 's/ /%20/g')

        # Search for issues with a similar title
        existing_issues=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
          "https://api.github.com/search/issues?q=repo:${{ github.repository }}+type:issue+state:open+${issue_title}")

        # Extract issue numbers from the search result
        echo "$existing_issues" | jq -r '.items[] | .number' > issue_numbers.txt

    - name: Check if a duplicate exists
      id: check_duplicate
      run: |
        issue_count=$(wc -l < issue_numbers.txt)

        if [ "$issue_count" -gt 0 ]; then
          echo "Duplicate issue(s) found."
          exit 0
        else
          echo "No duplicates found."
          exit 1
        fi

    - name: Comment and close the new issue if duplicate exists
      if: steps.check_duplicate.outcome == 'success'
      run: |
        issue_numbers=$(cat issue_numbers.txt | tr '\n' ', ' | sed 's/, $//')
        existing_issue=$(head -n 1 issue_numbers.txt)

        # Comment on the new issue
        curl -s -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
        -H "Content-Type: application/json" \
        -d "{\"body\": \"Thanks for raising this issue! However, we believe a similar issue already exists. Kindly go through all the open issues and ask to be assigned to that issue.\"}" \
        "https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}/comments"

        # Close the new issue
        curl -s -X PATCH -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
        -H "Content-Type: application/json" \
        -d '{"state": "closed"}' \
        "https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}"