# adapted from https://github.com/azuwis/actions/tree/7236424fa0fdc8d82df7cd4bff831a9d2338ce9e/nix
name: Install Nix and setup cache
inputs:
  nix_conf:
    description: Extra nix.conf config
    default: |
      accept-flake-config = true
      build-dir = /nix/var
      experimental-features = pipe-operator
      keep-derivations = true
      keep-outputs = true
  # key:
  #   description: Key to actions/cache
  #   default: nix
  # install_action:
  #   description: Set `nixbuild` to use nixbuild/nix-quick-install-action, otherwide use cachix/install-nix-action
  #   default: nixbuild
  # use_nixpkgs_in_flake:
  #   description: Use nixpkgs defined in flake.nix
  #   default: true
  # nixpkgs_url:
  #   description: Nixpkgs URL
  #   default: https://nixos.org/channels/nixos-24.05
  clean:
    description: Clean up disk space
    default: false
  btrfs:
    description: Use BTRFS to setup RAID0
    default: false
  attic_token:
    description: token to access attic cache
  # debug:
  #   description: Enable debug
  #   default: false
  # debug_token:
  #   default: ${{ github.token }}
  #   description: Set github token for gh cli
runs:
  using: composite
  steps:
    - shell: bash
      env:
        CLEAN: ${{ inputs.clean }}
        BTRFS: ${{ inputs.btrfs }}
      run: exec ${{ github.action_path }}/prepare.sh

    - uses: DeterminateSystems/nix-installer-action@v15
      with:
        source-url: https://install.lix.systems/lix/lix-installer-x86_64-linux
        extra-conf: ${{ inputs.nix_conf }}

    - name: Install and login to attic cache
      shell: bash
      run: |
        nix profile install "nixpkgs#attic-client"
        attic login oizys https://attic.dayl.in "${{ inputs.attic_token}}"

    # - name: Nix restore pre
    #   shell: bash
    #   env:
    #     CACHE_KEY: ${{ inputs.key }}
      # run: exec ${{ github.action_path }}/restore.sh pre
    # - uses: actions/cache/restore@v4
    #   with:
    #     key: ${{ env.CACHE_KEY }}-${{ runner.os }}-${{ runner.arch }}-${{ env.CACHE_TIMESTAMP }}
    #     restore-keys: |
    #       ${{ env.CACHE_KEY }}-${{ runner.os }}-${{ runner.arch }}
    #     path: |
    #       /nix/store
    #       /nix/var/nix/db
    #       /nix/var/nix/gcroots
    #       /nix/var/nix/profiles
    #       ~/.cache/nix
    #       ~/.local/state/nix
    #       ~/.nix-channels
    #       ~/.nix-defexpr
    # - name: Nix restore post
    #   shell: bash
    #   env:
    #     USE_NIXPKGS_IN_FLAKE: ${{ inputs.use_nixpkgs_in_flake }}
    #     NIXPKGS_URL: ${{ inputs.nixpkgs_url }}
      # run: exec ${{ github.action_path }}/restore.sh post
    # - name: Debug
    #   if: ${{ inputs.debug == true || inputs.debug == 'true' || inputs.debug == 'nopause' }}
    #   shell: bash
    #   env:
    #     GH_TOKEN: ${{ inputs.debug_token }}
    #   run: exec ${{ github.action_path }}/debug.sh "${{ inputs.debug }}"