# https://nix.dev/
# https://github.com/barrucadu/nixfiles/tree/master
# https://bitbucket.org/bzz/nixos/src/master/configuration.nix
# https://grahamc.com/blog/erase-your-darlings/
# https://github.com/Misterio77/nix-starter-configs

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";

    lix-module.url = "https://git.lix.systems/lix-project/nixos-module/archive/2.91.1-2.tar.gz";
    lix-module.inputs.nixpkgs.follows = "nixpkgs";

    disko.url = "github:nix-community/disko/latest";
    disko.inputs.nixpkgs.follows = "nixpkgs";

    # Encrypted home: https://github.com/nix-community/home-manager/pull/6981
    home-manager.url = "github:nix-community/home-manager/release-25.05";
    home-manager.inputs.nixpkgs.follows = "nixpkgs";

    # Extras
    waveforms.url = "github:liff/waveforms-flake";
    waveforms.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = {
    self,
    nixpkgs,
    nixpkgs-unstable, 
    home-manager,
    disko,
    waveforms,
    lix-module
  }@inputs: let
    system = "x86_64-linux";

    pkgs = import nixpkgs {
      inherit system;
      config.allowUnfree = true;
    };

    pkgs-unstable = import nixpkgs-unstable {
      inherit system;
      config.allowUnfree = true;
    };

    # Look into: https://git.sr.ht/~magic_rb/dotfiles/tree/master/item/nixos/systems/gooseberry
    pi_modules = [{ 
      # Disabling the whole `profiles/base.nix` module, which is responsible
      # for adding ZFS and a bunch of other unnecessary programs:
      disabledModules = [
        "profiles/base.nix"
      ];

      # Allows for remote deployment via
      # nixos-rebuild -L switch --flake .?submodules=1#HOSTNAME --target-host USER@HOSTNAME
      #nix.settings.require-sigs = false;
    }];

    # TODO: Surely a better way, no?
    _inherited_modules = [
      home-manager.nixosModules.home-manager
      disko.nixosModules.default
      lix-module.nixosModules.default
    ];
  in {
    homeManagerModules = {
      "lauren_lagarde" = [
        {
          home.username = "lauren_lagarde";
          home.homeDirectory = "/home/lauren_lagarde";
        }

        ./home-manager/base.nix
      ];

      "lauren_lagarde@ll-latitude-e5591" = self.homeManagerModules."lauren_lagarde" ++ [
        ./home-manager/i3.nix

        ./secrets/mlaga97.nix
        ./secrets/mlaga97-gui.nix

        ./systems/ll-latitude-e5591/home.nix
      ];
    };

    homeConfigurations = {
      "lauren_lagarde@ll-latitude-e5591" = home-manager.lib.homeManagerConfiguration {
        inherit pkgs;
        modules = self.homeManagerModules."lauren_lagarde@ll-latitude-e5591";
        extraSpecialArgs = { inherit inputs pkgs-unstable; };
      };
    };

    nixosConfigurations = {
      ll-latitude-e5591 = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          {
            networking.hostName = "ll-latitude-e5591";
            networking.hostId = "f55542ee";

            system.stateVersion = "24.11";
            time.timeZone = "America/Chicago";
          }

          ./systems/ll-latitude-e5591/configuration.nix
          ./nixos/disko/nvme/uefi-luks-lvm-ext4.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          waveforms.nixosModule
          disko.nixosModules.default
        ];
        specialArgs = { inherit inputs pkgs-unstable; };
      };

      ll-nixos-headless-pi = nixpkgs.lib.nixosSystem {
        system = "aarch64-linux";
        modules = pi_modules ++ [
          {
            networking.hostName = "ll-nixos-headless-pi";

            boot.loader.grub.enable = false;
            boot.loader.generic-extlinux-compatible.enable = true;

            fileSystems = {
              "/" = {
                device = "/dev/disk/by-label/NIXOS_SD";
                fsType = "ext4";
              };

              "/boot/firmware" = {
                device = "/dev/disk/by-label/FIRMWARE";
                fsType = "vfat";
              };
            };
          }
          ./systems/ll-nixos-headless.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          waveforms.nixosModule
          disko.nixosModules.default
        ];
        specialArgs = { inherit inputs pkgs-unstable; };
      };

      ll-nixos-base = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          {
            networking.hostName = "ll-nixos-base";
            home-manager.users."lauren_lagarde" = { config, pkgs-unstable, ... }: {
              imports = inputs.mlaga97-home-manager.homeManagerModules."lauren_lagarde@ll-latitude-e5591";
            };
          }
          ./systems/ll-nixos-base.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          waveforms.nixosModule
          disko.nixosModules.default
        ];

        specialArgs = { inherit inputs pkgs-unstable; };
      };

      # Real Systems
      bastion-in-training = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          ./systems/bastion/bastion-in-training.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          disko.nixosModules.default
        ];
      };
      bastion = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          ./systems/bastion/bastion-actual.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          disko.nixosModules.default
        ];
      };

      stronghold = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          {
            networking.hostName = "stronghold";
            networking.hostId = "c581a1cd";
          }
          ./systems/vm-docker-base.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          disko.nixosModules.default
        ];
      };

      vm-docker-luks-test = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          {
            networking.hostName = "vm-docker-luks-test";
            networking.hostId = "1b5432b7";
          }
          ./systems/vm-docker-luks.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          disko.nixosModules.default
        ];
      };

      vm-docker-zfs-test = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        modules = [
          {
            networking.hostName = "vm-docker-zfs-test";
            networking.hostId = "459ecfce";
          }
          ./systems/vm-docker-host/vm-docker-host-zfs.nix

          lix-module.nixosModules.default
          home-manager.nixosModules.home-manager
          disko.nixosModules.default
        ];
      };
    };

    #packages.aarch64-linux = {
    #  ll-nixos-headless-pi-sdcard = nixos-generators.nixosGenerate {
    #    system = "aarch64-linux";
    #    format = "sd-aarch64";
    #    modules = pi_modules ++ [
    #      { networking.hostName = "ll-nixos-headless-pi"; }
    #      ./systems/ll-nixos-headless.nix
    #      lix-module.nixosModules.default
    #      home-manager.nixosModules.home-manager
    #    ];
    #    specialArgs = { inherit inputs pkgs-unstable; };
    #  };

    #  token-pi-sdcard = nixos-generators.nixosGenerate {
    #    system = "aarch64-linux";
    #    format = "sd-aarch64";
    #    modules = pi_modules ++ [
    #      { networking.hostName = "token-pi"; }
    #      ./systems/ll-nixos-headless.nix
    #      lix-module.nixosModules.default
    #      home-manager.nixosModules.home-manager
    #    ];
    #    specialArgs = { inherit inputs pkgs-unstable; };
    #  };

    #  outpost-sdcard = nixos-generators.nixosGenerate {
    #    system = "aarch64-linux";
    #    format = "sd-aarch64";
    #    modules = pi_modules ++ [
    #      ./systems/outpost.nix
    #      lix-module.nixosModules.default
    #      home-manager.nixosModules.home-manager
    #    ];
    #    specialArgs = { inherit inputs pkgs-unstable; };
    #  };
    #};

    packages.x86_64-linux = {

      ##########################################################################
      ##########################################################################
      ##########################################################################
      # Personal Live Disks

      # TODO: ll-nixos-headless-iso = nixos-generators.nixosGenerate {};

      #ll-nixos-base-iso = nixos-generators.nixosGenerate {
      #  system = "x86_64-linux";
      #  modules = [
      #    {
      #      networking.hostName = "ll-nixos";
      #      home-manager.users."lauren_lagarde" = {
      #        nixpkgs.config.allowUnfree = true;
      #        imports = inputs.mlaga97-home-manager.homeManagerModules."lauren_lagarde@ll-latitude-e5591";
      #      };
      #    }
      #    ./systems/ll-nixos-base.nix
      #    lix-module.nixosModules.default
      #    home-manager.nixosModules.home-manager
      #  ];
      #  specialArgs = {
      #    inherit inputs pkgs-unstable;
      #  };
      #  format = "install-iso";
      #};

      #ll-nixos-full-iso = nixos-generators.nixosGenerate {
      #  system = "x86_64-linux";
      #  modules = [
      #    {
      #      networking.hostName = "ll-nixos";
      #      home-manager.users."lauren_lagarde" = { config, ... }: {
      #        nixpkgs.config.allowUnfree = true;
      #        imports = inputs.mlaga97-home-manager.homeManagerModules."lauren_lagarde@ll-latitude-e5591";
      #      };
      #    }
      #    ./systems/ll-nixos-full.nix

      #    lix-module.nixosModules.default
      #    home-manager.nixosModules.home-manager
      #    waveforms.nixosModule
      #    disko.nixosModules.default
      #  ];
      #  specialArgs = {
      #    inherit inputs pkgs-unstable;
      #  };
      #  format = "install-iso";
      #};

      #ll-nixos-xmrig-worker-iso = nixos-generators.nixosGenerate {
      #  system = "x86_64-linux";
      #  modules = [
      #    { networking.hostName = "ll-nixos-xmrig-worker"; }
      #    ./systems/ll-nixos-xmrig-worker.nix
      #    lix-module.nixosModules.default
      #    home-manager.nixosModules.home-manager
      #  ];
      #  format = "install-iso";
      #};

      ##########################################################################
      ##########################################################################
      ##########################################################################
      # Systems

      #living-room-nixos-iso = nixos-generators.nixosGenerate {
      #  system = "x86_64-linux";
      #  modules = [
      #    { networking.hostName = "living-room-nixos-iso"; }
      #    ./systems/living-room-nixos.nix
      #    lix-module.nixosModules.default
      #    home-manager.nixosModules.home-manager
      #  ];
      #  format = "install-iso";
      #  specialArgs = { inherit inputs pkgs-unstable; };
      #};

      #default = self.packages.x86_64-linux.ll-nixos-full-iso;
    };
  };
}