name: "Test"
on:
  pull_request:
  push:
    branches:
      - master

env:
  CURRENT_STABLE_CHANNEL: nixpkgs-24.05-darwin

jobs:
  test-stable:
    runs-on: macos-13
    timeout-minutes: 30
    steps:
    - uses: actions/checkout@v4
    - name: Install nix corresponding to latest stable channel
      uses: cachix/install-nix-action@v30
      with:
        install_url: https://releases.nixos.org/nix/nix-2.18.8/install
    - run: nix flake check --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }}

  test-unstable:
    runs-on: macos-13
    timeout-minutes: 30
    steps:
    - uses: actions/checkout@v4
    - name: Install nix from current unstable channel
      uses: cachix/install-nix-action@v30
      with:
        install_url: https://releases.nixos.org/nix/nix-2.24.9/install
    - run: nix flake check --override-input nixpkgs nixpkgs/nixpkgs-unstable

  install-against-stable:
    runs-on: macos-13
    timeout-minutes: 30
    steps:
    - uses: actions/checkout@v4
    - name: Install nix corresponding to latest stable channel
      uses: cachix/install-nix-action@v30
      with:
        install_url: https://releases.nixos.org/nix/nix-2.18.8/install
        nix_path: nixpkgs=channel:${{ env.CURRENT_STABLE_CHANNEL }}
    - name: Install ${{ env.CURRENT_STABLE_CHANNEL }} channel
      run: |
        nix-channel --add https://nixos.org/channels/${{ env.CURRENT_STABLE_CHANNEL }} nixpkgs
        nix-channel --update
    - name: Install nix-darwin and test
      run: |
        export NIX_PATH=$HOME/.nix-defexpr/channels

        # We run nix-darwin twice to test that it can create darwin-configuration correctly for us
        # but we expect it to fail setting up /etc/nix/nix.conf
        nix-shell -A installer || true

        nixConfHash=$(shasum -a 256 /etc/nix/nix.conf | cut -d ' ' -f 1)
        /usr/bin/sed -i.bak \
          "s/# programs.fish.enable = true;/nix.settings.access-tokens = [ \"github.com=\${{ secrets.GITHUB_TOKEN }}\" ]; environment.etc.\"nix\/nix.conf\".knownSha256Hashes = [ \"$nixConfHash\" ];/" \
          ~/.nixpkgs/darwin-configuration.nix

        nix-shell -A installer
        nix-shell -A installer.check
    - name: Build and activate default derivation
      run: |
        . /etc/static/bashrc
        darwin-rebuild switch -I darwin=.
    - name: Test uninstallation of nix-darwin
      run: |
        nix run .#darwin-uninstaller \
          --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }} \
          --extra-experimental-features "nix-command flakes"
        nix run .#darwin-uninstaller.tests.uninstaller \
          --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }} \
          --extra-experimental-features "nix-command flakes"
    - name: Debugging tmate session
      if: ${{ failure() }}
      uses: mxschmitt/action-tmate@v3
      timeout-minutes: 15
      with:
        limit-access-to-actor: true

  install-against-unstable:
    runs-on: macos-13
    timeout-minutes: 30
    steps:
    - uses: actions/checkout@v4
    - name: Install nix from current unstable channel
      uses: cachix/install-nix-action@v30
      with:
        install_url: https://releases.nixos.org/nix/nix-2.24.9/install
        nix_path: nixpkgs=channel:nixpkgs-unstable
    - name: Install nixpkgs-unstable channel
      run: |
        nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgs
        nix-channel --update
    - name: Install nix-darwin and test
      run: |
        export NIX_PATH=$HOME/.nix-defexpr/channels

        # We run nix-darwin twice to test that it can create darwin-configuration correctly for us
        # but we expect it to fail setting up /etc/nix/nix.conf
        nix-shell -A installer || true

        nixConfHash=$(shasum -a 256 /etc/nix/nix.conf | cut -d ' ' -f 1)
        /usr/bin/sed -i.bak \
          "s/# programs.fish.enable = true;/nix.settings.access-tokens = [ \"github.com=\${{ secrets.GITHUB_TOKEN }}\" ]; environment.etc.\"nix\/nix.conf\".knownSha256Hashes = [ \"$nixConfHash\" ];/" \
          ~/.nixpkgs/darwin-configuration.nix

        nix-shell -A installer
        nix-shell -A installer.check
    - name: Build and activate default derivation
      run: |
        . /etc/static/bashrc
        darwin-rebuild switch -I darwin=.
    - name: Test uninstallation of nix-darwin
      run: |
        # A regression in Nix 2.19 means we need to put `--extra-experimental-features` before `--override-input`
        nix run .#darwin-uninstaller \
           --extra-experimental-features "nix-command flakes" \
           --override-input nixpkgs nixpkgs/nixpkgs-unstable
        nix run .#darwin-uninstaller.tests.uninstaller \
           --extra-experimental-features "nix-command flakes" \
           --override-input nixpkgs nixpkgs/nixpkgs-unstable
    - name: Debugging tmate session
      if: ${{ failure() }}
      uses: mxschmitt/action-tmate@v3
      timeout-minutes: 15
      with:
        limit-access-to-actor: true

  install-flake-against-stable:
    runs-on: macos-13
    timeout-minutes: 30
    steps:
    - uses: actions/checkout@v4
    - name: Install nix version corresponding to latest stable channel
      uses: cachix/install-nix-action@v30
      with:
        install_url: https://releases.nixos.org/nix/nix-2.18.8/install
    - name: Install nix-darwin
      run: |
        mkdir -p ~/.config/nix-darwin
        darwin=$(pwd)
        pushd ~/.config/nix-darwin
          nix flake init -t $darwin
          nixConfHash=$(shasum -a 256 /etc/nix/nix.conf | cut -d ' ' -f 1)
          /usr/bin/sed -i.bak \
            "s/# programs.fish.enable = true;/nix.settings.access-tokens = [ \"github.com=\${{ secrets.GITHUB_TOKEN }}\" ]; environment.etc.\"nix\/nix.conf\".knownSha256Hashes = [ \"$nixConfHash\" ];/" \
            flake.nix
        popd
        nix run .#darwin-rebuild -- \
          switch --flake ~/.config/nix-darwin#simple \
          --override-input nix-darwin . \
          --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }}
    - name: Rebuild and activate simple flake, but this time using nix-darwin's flake interface
      run: |
        . /etc/static/bashrc
        darwin-rebuild build --flake ./modules/examples/flake#simple --override-input nix-darwin . --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }}
    - name: Test uninstallation of nix-darwin
      run: |
        nix run .#darwin-uninstaller --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }}
        nix run .#darwin-uninstaller.tests.uninstaller --override-input nixpkgs nixpkgs/${{ env.CURRENT_STABLE_CHANNEL }}

  install-flake-against-unstable:
    runs-on: macos-13
    timeout-minutes: 30
    steps:
    - uses: actions/checkout@v4
    - name: Install nix from current unstable channel
      uses: cachix/install-nix-action@v30
      with:
        install_url: https://releases.nixos.org/nix/nix-2.24.9/install
    - name: Install nix-darwin
      run: |
        mkdir -p ~/.config/nix-darwin
        darwin=$(pwd)
        pushd ~/.config/nix-darwin
          nix flake init -t $darwin
          nixConfHash=$(shasum -a 256 /etc/nix/nix.conf | cut -d ' ' -f 1)
          /usr/bin/sed -i.bak \
            "s/# programs.fish.enable = true;/nix.settings.access-tokens = [ \"github.com=\${{ secrets.GITHUB_TOKEN }}\" ]; environment.etc.\"nix\/nix.conf\".knownSha256Hashes = [ \"$nixConfHash\" ];/" \
            flake.nix
        popd
        nix run .#darwin-rebuild -- \
          switch --flake ~/.config/nix-darwin#simple \
          --override-input nix-darwin . \
          --override-input nixpkgs nixpkgs/nixpkgs-unstable
    - name: Rebuild and activate simple flake, but this time using nix-darwin's flake interface
      run: |
        . /etc/static/bashrc
        darwin-rebuild build --flake ./modules/examples/flake#simple --override-input nix-darwin . --override-input nixpkgs nixpkgs/nixpkgs-unstable
    - name: Test uninstallation of nix-darwin
      run: |
        nix run .#darwin-uninstaller --override-input nixpkgs nixpkgs/nixpkgs-unstable
        nix run .#darwin-uninstaller.tests.uninstaller --override-input nixpkgs nixpkgs/nixpkgs-unstable