# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
#
# SPDX-License-Identifier: LGPL-3.0-or-later
{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
    nixpkgs-hashicorp.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
    nixinate.url = "github:MagicRB/nixinate";
    home-manager.url = "github:nix-community/home-manager?ref=master";
    nixng.url = "github:nix-community/NixNG";
    flake-parts.url = "github:hercules-ci/flake-parts";
    nil.url = "github:oxalica/nil";
    uterranix.url = "sourcehut:~magic_rb/uterranix";
    dwarffs.url = "github:edolstra/dwarffs";
    haskell-nix.url = "github:input-output-hk/haskell.nix";
    serokell-nix.url = "github:magicrb/serokell.nix";
    serokell-nix.inputs.haskell-nix.follows = "haskell-nix";
    website.url = "sourcehut:~magic_rb/website";
    microvm.url = "github:astro/microvm.nix";
    notnft.url = "github:chayleaf/notnft";
    impermenance.url = "github:MagicRB/impermanence";
    numen-nix.url = "github:anpandey/numen-nix";
    hydra.url = "github:t184256/hydra/nix-ca-reprise";
    nix.url = "github:NixOS/nix";

    disko.url = "github:nix-community/disko";
    nixos-anywhere.url = "github:numtide/nixos-anywhere";

    tuxedo-rs.url = "github:AaronErhardt/tuxedo-rs";
    tuxedo-rs.inputs.nixpkgs.follows = "nixpkgs";

    tuxedo-nixos.url = "github:blitz/tuxedo-nixos";
    tuxedo-nixos.inputs.nixpkgs.follows = "nixpkgs";

    emacs.url = "sourcehut:~magic_rb/emacs";
    emacs.flake = false;

    vtermModule.url = "github:akermu/emacs-libvterm";
    vtermModule.flake = false;

    secret.url = "path:///home/main/dotfiles/secret";
    secret.flake = false;

    ical2org.url = "git+https://git.sr.ht/~magic_rb/ical2orgpy";
    ical2org.flake = false;

    udp-over-tcp.url = "github:mullvad/udp-over-tcp";
    udp-over-tcp.flake = false;
  };

  outputs = inputs@{ flake-parts, self, secret, ... }:
    flake-parts.lib.mkFlake { inherit inputs; } ({ config, lib', ... }: {
      imports = [
        modules/nixngConfigurations.nix
        modules/lib_overlays.nix
        lib/load_secrets.nix

        nixos/systems/omen
        nixos/systems/heater
        nixos/systems/toothpick
        nixos/systems/liveusb
        nixos/systems/blowhole
        nixos/systems/altra
        nixos/systems/gooseberry

        nixng/containers/ingress-blowhole
        nixng/containers/ingress-toothpick
        nixng/containers/matrix/mautrix-signal
        nixng/containers/matrix/mautrix-discord
        nixng/containers/matrix/mautrix-facebook
        nixng/containers/matrix/heisenbridge
        nixng/containers/matrix/synapse
        nixng/containers/website
        nixng/containers/home-assistant
        nixng/containers/email/getmail
        nixng/containers/email/dovecot.nix
        nixng/containers/email/postfix
        nixng/containers/gitea
        nixng/containers/hydra
        nixng/containers/syncthing
        # nixng/containers/minecraft/vanilla
        # nixng/containers/minecraft/ftb-infinity
        # nixng/containers/minecraft/ftb-integrations

        overlays/udp-over-tcp.nix
        overlays/emacsclient-remote
        overlays/magic-screenshot
        overlays/emacs-rofi
        overlays/tree-sitter-grammars.nix
        overlays/emacs-master-nativecomp
        overlays/zfs-relmount
        overlays/mautrix-discord.nix
        overlays/getmail6
        overlays/maildrop
        overlays/courier-unicode.nix
        overlays/ds3os.nix
        overlays/terraform-provider-vault.nix
        overlays/terraform-provider-influxdb-v2.nix
        overlays/bootloadHID.nix
        overlays/itp
        overlays/virtiofsd-zfs
        overlays/show-files-to-be-deleted
        overlays/rolling_datasets
        overlays/ledger-compat

        inputs.uterranix.flakeModule
      ];

      _module.args.lib' =
        let
          inherit (inputs.nixpkgs) lib;
          inherit (inputs.nixpkgs.lib)
            extend;
        in
          lib.foldl (acc: x: acc.extend x) lib (with config.flake.libOverlays; [
            loadSecrets
          ]);

      flake.hydraJobs =
        let
          inherit (lib')
            mapAttrs;
        in
          {
            nixng = mapAttrs (_: v: v.config.system.build.toplevel) config.flake.nixngConfigurations;
            nixos = mapAttrs (_: v: v.config.system.build.toplevel) config.flake.nixosConfigurations;
          };

      uterranix.config = [
        ./terranix/default.nix
        {
          _module.args.secret = lib'.loadSecrets secret;
          _module.args.vars = {
            flake_rev = self.rev or (lib'.warn "No flake revision available, do not deploy containers!" "");
            flake_sha = self.narHash or (lib'.warn "No flake nar hash available, do not deploy containers!" "");
            flake_ref = "master";
            flake_host = "git+https://git.sr.ht/~magic_rb/dotfiles-2.0";
          };
          _module.args.config' = config;
        }
      ];

      uterranix.terraform = pkgs:
        let
          hpkgs = inputs.nixpkgs.legacyPackages.${pkgs.stdenv.system}.appendOverlays (with config.flake.overlays; [
            terraform-provider-vault
            terraform-provider-influxdb-v2
          ]);
        in
          hpkgs.terraform.withPlugins (p: [
            p.consul
            p.nomad
            p.local
            p.vault
            p.random
            p.null
            p.influxdb-v2
            p.hcloud
          ] );

      flake.nixosModules = {
        hashicorp = nixos/modules/hashicorp.nix;
        hashicorp-envoy = nixos/modules/hashicorp-envoy.nix;
        telegraf = nixos/modules/telegraf.nix;
        grafana = nixos/modules/grafana.nix;
        influx-provisioning = nixos/modules/influx-provisioning.nix;
        microvm-extras = nixos/modules/microvm-extras.nix;
        microvm-extras-host = nixos/modules/microvm-extras-host.nix;
        notnft = nixos/modules/notnft.nix;
      };

      flake.apps = inputs.nixpkgs.lib.genAttrs config.systems (system: {
        nixos-anywhere.program = (inputs.nixos-anywhere.packages.${system}.nixos-anywhere);
        nixos-anywhere.type = "app";
      });

      perSystem = { system, pkgs, ... }:
        {
          packages =
            let
              inherit (lib')
                attrValues;
              pkgs' = pkgs.appendOverlays (attrValues config.flake.overlays);
            in
              {
                inherit (pkgs')
                  emacsclient-remote
                  emacs-master-nativecomp
                  emacs-rofi
                  getmail6
                  magic-screenshot
                  maildrop
                  zfs-relmount
                  bootloadHID
                  terraform-provider-influxdb-v2
                  terrafrom-provider-vault
                  tree-sitter-grammars
                  udp-over-tcp
                  itp
                  ds3os
                  rolling_datasets;
              };

          devShells.default =
            let
              unpackSrc = package: pkgs.stdenv.mkDerivation {
                pname = package.pname;
                version = package.version;

                src = package.src;

                phases = [ "unpackPhase" "installPhase" ];

                installPhase = ''
                  mkdir $out
                  cp -r . $out
                '';
              };
              prepareDeps = pkgs.writeShellScript "prepare-deps.sh" ''
                cd "$(git rev-parse --show-toplevel)/home-manager/modules/xmonad"
                mkdir -p .packages

                _rsync_args=("--no-perms" "--no-owner" "--no-group" "--del" "--exclude=.stack-work" "--chmod=ugo=rwX" "-crvP")
                rsync "''${_rsync_args[@]}" ${unpackSrc pkgs.haskell.packages.ghc946.xmonad}/. .packages/xmonad >/dev/null 2>&1
                rsync "''${_rsync_args[@]}" ${unpackSrc pkgs.haskell.packages.ghc946.xmonad-contrib}/. .packages/xmonad-contrib >/dev/null 2>&1
                rsync "''${_rsync_args[@]}" ${unpackSrc pkgs.haskell.packages.ghc946.xmobar}/. .packages/xmobar >/dev/null 2>&1
              '';
              stack-wrapped = pkgs.symlinkJoin {
                name = "stack"; # will be available as the usual `stack` in terminal
                paths = [ pkgs.stack ];
                buildInputs = [ pkgs.makeWrapper ];
                postBuild = ''
                  wrapProgram $out/bin/stack \
                    --run "${prepareDeps}"\
                    --add-flags "\
                      --no-nix \
                      --system-ghc \
                      --no-install-ghc \
                    "
                '';
              };

              nix-wrapped = pkgs.writeShellScriptBin "nix" ''
                pre_lock_hash="$(sha256sum flake-secret.lock | cut -f1 -d' ')"
                new_args=()
                i="0"

                flake=0
                immutable=0

                for arg in "$@" ; do
                  if [[ "$arg" =~ "^git+file://.*$" ]] ; then
                    immutable=1
                  fi
                done

                for arg in "$@" ; do
                  case "$arg" in
                    build|eval|run)
                      new_args[$i]="$arg"
                      new_args[$(($i + 1))]="--reference-lock-file"
                      new_args[$(($i + 2))]="flake-secret.lock"
                      if [[ "$immutable" != 0 ]] ; then
                        new_args[$(($i + 3))]="--output-lock-file"
                        new_args[$(($i + 4))]="flake-secret.lock"
                        i="$(($i + 2))"
                      fi
                      i="$(($i + 3))"
                      ;;
                    flake)
                      new_args[$i]="$arg"
                      i="$(($i + 1))"
                      flake=1
                      ;;
                    --*|-*)
                      new_args[$i]="$arg"
                      i="$(($i + 1))"
                      ;;
                    *)
                      if [[ "$flake" == "1" ]] ; then
                        new_args[$i]="$arg"
                        new_args[$(($i + 1))]="--reference-lock-file"
                        new_args[$(($i + 2))]="flake-secret.lock"
                        new_args[$(($i + 3))]="--output-lock-file"
                        new_args[$(($i + 4))]="flake-secret.lock"
                        i="$(($i + 5))"
                      else
                        new_args[$i]="$arg"
                        i="$(($i + 1))"
                      fi
                      ;;
                  esac
                done

                ( exec -a $0 .nix-unwrapped "''${new_args[@]}" )

                post_lock_hash="$(sha256sum flake-secret.lock | cut -f1 -d' ')"

                if ! [[ "$pre_lock_hash" == "$post_lock_hash" ]] ; then
                  cp flake-secret.lock flake.lock
                  .nix-unwrapped flake lock --override-input secret path:///var/empty
                fi
              '';
              nix-with-wrapper = pkgs.symlinkJoin {
                name = "nix";
                paths = [ pkgs.nixUnstable ];
                buildInputs = [ pkgs.makeWrapper ];
                postBuild = ''
                  mv $out/bin/nix $out/bin/.nix-unwrapped
                  cp ${nix-wrapped}/bin/nix $out/bin/nix
                '';
              };
              nixos-rebuild = pkgs.nixos-rebuild.override { nix = nix-with-wrapper; };
            in
              pkgs.mkShell {
                nativeBuildInputs = with pkgs; [
                  (pkgs.writeShellScriptBin "update-secret" ''
                    nix flake lock --update-input secret
                  '')
                  nil nix-with-wrapper nixos-rebuild
                  nomad consul vault

                  haskell.compiler.ghc946
                  stack-wrapped
                  pkg-config
                  haskell.packages.ghc946.haskell-language-server
                  jq
                  alejandra
                ] ++ (lib.foldl (acc: x: acc ++ x) [] (map (x: pkgs.haskell.packages.ghc946.${x}.buildInputs) [ "gi-pangocairo" "X11" "cairo" "glib" ]));
              };
        };

      flake.patches = {
        hashicorp-nomad.revert-change-consul-si-tokens-to-be-local = patches/0001-Revert-Change-consul-SI-tokens-to-be-local.patch;
        hashicorp-nomad.add-nix-integration = patches/0001-Add-Nix-integration.patch;
        hostapd.intel_lar-and-noscan = patches/0001-intel_lar-and-noscan.patch;
        hostapd.hostapd-2_10-lar = patches/999-hostapd-2.10-lar.patch;
        hostapd.hostapd-2_10-lar-2 = patches/hostapd-2.10-lar.patch;
        terraform-provider-nomad.allow-null-in-authMountTuneSchema = patches/vault-provider-Allow-null-in-authMountTuneSchema.patch;
      };

      systems = [
        "x86_64-linux"
        "armv8-linux"
        "riscv64-linux"
      ];
    });
}