update.yml

name: Update | Pipeline
on:
  workflow_dispatch:

jobs:

  parse-current-modpacks:
    name: Parse current modpacks to a list

    runs-on: ubuntu-latest

    permissions:
      contents: read


    outputs:
      modpack_folders: ${{ steps.list_modpacks.outputs.modpack_folders }}
    
    steps:

      - name: Check Out Git Repository
        uses: actions/checkout@v4


      - name: List Modpacks
        id: list_modpacks
        run: |
          modpackFolders=()
          for folder in *; do
            if [ -d "$folder" ]; then
              if [ -e "$folder/pack.toml" ]; then
                modpackFolders+=("$folder")
              fi
            fi
          done
          
          echo "modpack_folders=$(jq --compact-output --null-input '$ARGS.positional' --args -- "${modpackFolders[@]}")" >> "$GITHUB_OUTPUT"

      - name: Current detected modpacks
        run: |
          echo "::notice ::⚙ Current detected modpacks: ${{ steps.list_modpacks.outputs.modpack_folders }}"

  update_mods:
    name: Update Mods
    runs-on: ubuntu-latest

    needs:
      - parse-current-modpacks
  
    if: ${{ (needs.parse-current-modpacks.outputs.modpack_folders) != '[]' }}

    strategy:
      fail-fast: false
      matrix:
        modpack: ${{ fromJson(needs.parse-current-modpacks.outputs.modpack_folders) }}

    defaults:
      run:
        working-directory: ${{ matrix.modpack }}

    permissions:
      contents: write
      pull-requests: write

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

      - name: Install nix
        uses: cachix/install-nix-action@v26

      - name: Update Mods with Packwiz
        run: nix develop --command packwiz update -a -y

      - name: Push the updated mod list via a Pull Request
        uses: peter-evans/create-pull-request@v6
        with:
            commit-message: "update(${{ matrix.modpack }}): updated mods"
            title: 'update(${{ matrix.modpack }}): updated mods'
            body: >
              This PR is auto-generated by 
              [create-pull-request](https://github.com/peter-evans/create-pull-request).