name: Update

on:
  schedule:
    - cron: "0 0 * * *"
  workflow_dispatch:

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v31
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Use Cachix
        uses: cachix/cachix-action@v16
        with:
          name: trevstack
          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"

      # https://github.com/actions/checkout/issues/13
      - name: Set Git Config
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

      - name: Update
        run: nix run .#update

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v7
        with:
          title: update
          body: automatic update