chore: change to native nix scripts

pkgs/flake/swarsel-rebuild/default.nix

@@ -1,6 +1,117 @@
-{ self, name, writeShellApplication, git }:
+{ name, writeShellApplication, git, ... }:
 writeShellApplication {
   inherit name;
   runtimeInputs = [ git ];
-  text = builtins.readFile "${self}/files/scripts/${name}.sh";
+  text = ''
+    set -eo pipefail
+
+    target_config="hotel"
+    target_arch=""
+    target_user="swarsel"
+
+    function help_and_exit() {
+      echo
+      echo "Builds SwarselSystem configuration."
+      echo
+      echo "USAGE: $0 [OPTIONS]"
+      echo
+      echo "ARGS:"
+      echo "  -n <target_config>                      specify nixos config to build."
+      echo "                                          Default: hotel"
+      echo "  -u <target_user>                        specify user to deploy for."
+      echo "                                          Default: swarsel"
+      echo "  -a <target_arch>                        specify target architecture."
+      echo "  -h | --help                             Print this help."
+      exit 0
+    }
+
+    function red() {
+      echo -e "\x1B[31m[!] $1 \x1B[0m"
+      if [ -n "''${2-}" ]; then
+        echo -e "\x1B[31m[!] $($2) \x1B[0m"
+      fi
+    }
+    function green() {
+      echo -e "\x1B[32m[+] $1 \x1B[0m"
+      if [ -n "''${2-}" ]; then
+        echo -e "\x1B[32m[+] $($2) \x1B[0m"
+      fi
+    }
+    function yellow() {
+      echo -e "\x1B[33m[*] $1 \x1B[0m"
+      if [ -n "''${2-}" ]; then
+        echo -e "\x1B[33m[*] $($2) \x1B[0m"
+      fi
+    }
+
+    while [[ $# -gt 0 ]]; do
+      case "$1" in
+      -n)
+        shift
+        target_config=$1
+        ;;
+      -a)
+        shift
+        target_arch=$1
+        ;;
+      -u)
+        shift
+        target_user=$1
+        ;;
+      -h | --help) help_and_exit ;;
+      *)
+        echo "Invalid option detected."
+        help_and_exit
+        ;;
+      esac
+      shift
+    done
+
+    if [[ $target_arch == "" ]]; then
+      red "error: target_arch not set."
+      help_and_exit
+    fi
+
+    cd /home/"$target_user"
+
+    if [ ! -d /home/"$target_user"/.dotfiles ]; then
+      green "Cloning repository from GitHub"
+      git clone https://github.com/Swarsel/.dotfiles.git
+    else
+      red "A .dotfiles repository is in the way. Please (re-)move the repository and try again."
+      exit 1
+    fi
+
+    local_keys=$(ssh-add -L || true)
+    pub_key=$(cat /home/"$target_user"/.dotfiles/secrets/public/ssh/yubikey.pub)
+    read -ra pub_arr <<< "$pub_key"
+
+    cd .dotfiles
+    if [[ $local_keys != *"''${pub_arr[1]}"* ]]; then
+      yellow "The ssh key for this configuration is not available."
+      green "Adjusting flake.nix so that the configuration is buildable"
+      sed -i '/nix-secrets = {/,/^[[:space:]]*};/d' flake.nix
+      sed -i '/vbc-nix = {/,/^[[:space:]]*};/d' flake.nix
+      sed -i '/[[:space:]]*\/\/ (inputs.vbc-nix.overlays.default final prev)/d' overlays/default.nix
+      rm modules/home/common/env.nix
+      rm modules/home/common/gammastep.nix
+      rm modules/home/common/git.nix
+      rm modules/home/common/mail.nix
+      rm modules/home/common/yubikey.nix
+      rm modules/nixos/server/restic.nix
+      rm hosts/nixos/aarch64-linux/milkywell/default.nix
+      rm -rf modules/nixos/server
+      rm -rf modules/home/server
+      nix flake update vbc-nix
+      git add .
+    else
+      green "Valid SSH key found! Continuing with installation"
+    fi
+    sudo nixos-generate-config --dir /home/"$target_user"/.dotfiles/hosts/nixos/"$target_arch"/"$target_config"/
+    git add /home/"$target_user"/.dotfiles/hosts/nixos/"$target_arch"/"$target_config"/hardware-configuration.nix
+
+    green "Installing flake $target_config"
+    sudo nixos-rebuild --show-trace --flake .#"$target_config" boot
+    yellow "Please keep in mind that this is only a demo of the configuration. Things might break unexpectedly."
+  '';
 }