auto_delete.yml

name: auto_delete

on:
  schedule:
    - cron: '0 2 10 * *'
  workflow_dispatch:

jobs:
  cleanup:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: List all releases
        id: list_releases
        run: |
          gh release list --limit 1000 > releases.txt
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Determine releases to keep
        id: determine_releases
        run: |
          current_month=$(date +'%Y-%m')
          current_year=$(date +'%Y')

          keep_releases=()

          while read -r release; do
            release_date=$(echo $release | awk '{print $3}')
            release_tag=$(echo $release | awk '{print $1}')
            
            release_month=$(date -d $release_date +'%Y-%m')
            release_year=$(date -d $release_date +'%Y')

            if [[ $release_month == $current_month ]]; then
              keep_releases+=($release_tag)
            else
              last_release_of_month=$(grep $release_month releases.txt | tail -n 1 | awk '{print $1}')
              if [[ ! " ${keep_releases[@]} " =~ " ${last_release_of_month} " ]]; then
                keep_releases+=($last_release_of_month)
              fi
            fi
          done < releases.txt

          echo "keep_releases=${keep_releases[@]}" >> $GITHUB_ENV

      - name: Ensure total releases do not exceed 100
        id: ensure_total_releases
        run: |
          keep_releases=(${{ env.keep_releases }})
          total_releases=$(wc -l < releases.txt)
          if [ $total_releases -gt 100 ]; then
            excess_releases=$(($total_releases - 100))
            old_releases=$(tail -n $excess_releases releases.txt | awk '{print $1}')
            for release_tag in $old_releases; do
              if [[ ! " ${keep_releases[@]} " =~ " ${release_tag} " ]]; then
                gh release delete $release_tag -y
              fi
            done
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Delete old releases
        run: |
          keep_releases=(${{ env.keep_releases }})
          while read -r release; do
            release_tag=$(echo $release | awk '{print $1}')
            if [[ ! " ${keep_releases[@]} " =~ " ${release_tag} " ]]; then
              gh release delete $release_tag -y
            fi
          done < releases.txt
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Delete tags without releases
        run: |
          all_tags=$(git tag -l)
          echo "All tags:"
          echo "$all_tags"

          release_tags=$(gh release list --limit 1000 | awk '{print $1}')
          echo "Release tags:"
          echo "$release_tags"

          IFS=' ' read -r -a release_tags_array <<< "$release_tags"

          for tag in $all_tags; do
            if [[ ! " ${release_tags_array[@]} " =~ " ${tag} " ]]; then
              echo "Deleting tag: $tag"
              git tag -d $tag
              git push origin :refs/tags/$tag
            else
              echo "Keeping tag: $tag"
            fi
          done
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}