{ pkgs
, config
, lib
, ...
}:
with lib; let
  cfg = config.eboskma.programs.emacs;

  tangleEmacsConfig = initFile: pkgs.runCommand "tangled-emacs-${initFile}" { } ''
    cp ${./config.org} ./config.org
    ${cfg.package}/bin/emacs --batch --quick --load org ./config.org --funcall org-babel-tangle
    cp ${initFile} $out
  '';

  tree-sitter-hare = pkgs.tree-sitter.buildGrammar {
    language = "tree-sitter-hare";
    version = "unstable-2023-12-31";
    src = pkgs.fetchFromSourcehut {
      owner = "~ecs";
      repo = "tree-sitter-hare";
      rev = "9408bb8fd6c110307f7c92fa834eb5dbd92e36d8";
      sha256 = "iqaj+7Ax5zfXGXsJw5pesTlTeah2X4Li4LpInDSUTcU=";
    };
  };

  hare-mode = pkgs.emacsPackages.trivialBuild {
    pname = "hare-mode";
    version = "unstable-2022-04-27";
    src = pkgs.fetchFromSourcehut {
      owner = "~bbuccianti";
      repo = "hare-mode";
      rev = "bb7b2faccb5939b0c8d4ffa6a6e28a0d2bc93dd6";
      sha256 = "SOnsNDWKL077AgTdpd9zZPhiyv8d/snllzTy53qlco8=";
    };
  };

  emacsWithPackages = pkgs.emacsWithPackagesFromUsePackage {
    config =
      let
        tangledOrgConfig = tangleEmacsConfig "init.el";
      in
      builtins.readFile tangledOrgConfig;

    defaultInitFile = true;
    package = cfg.package;
    alwaysEnsure = true;
    alwaysTangle = true;
    extraEmacsPackages = epkgs: with epkgs; [
      hare-mode
      vterm
      (treesit-grammars.with-grammars (p: with p; [
        tree-sitter-bash
        tree-sitter-c
        tree-sitter-c-sharp
        tree-sitter-css
        tree-sitter-cmake
        tree-sitter-comment
        tree-sitter-commonlisp
        tree-sitter-cpp
        tree-sitter-css
        tree-sitter-cuda
        tree-sitter-devicetree
        tree-sitter-dockerfile
        tree-sitter-dot
        tree-sitter-eex
        tree-sitter-elisp
        tree-sitter-elixir
        tree-sitter-embedded-template
        tree-sitter-erlang
        tree-sitter-fish
        tree-sitter-glsl
        tree-sitter-go
        tree-sitter-gomod
        tree-sitter-gowork
        tree-sitter-graphql
        tree-sitter-hare
        tree-sitter-haskell
        tree-sitter-hcl
        tree-sitter-heex
        tree-sitter-html
        tree-sitter-http
        tree-sitter-javascript
        tree-sitter-jsdoc
        tree-sitter-json
        tree-sitter-latex
        tree-sitter-llvm
        tree-sitter-lua
        tree-sitter-make
        tree-sitter-markdown
        tree-sitter-markdown-inline
        tree-sitter-nix
        tree-sitter-nu
        tree-sitter-pioasm
        tree-sitter-python
        tree-sitter-query
        tree-sitter-regex
        tree-sitter-rst
        tree-sitter-ruby
        tree-sitter-rust
        tree-sitter-scheme
        tree-sitter-scss
        tree-sitter-sql
        tree-sitter-surface
        tree-sitter-svelte
        tree-sitter-toml
        tree-sitter-tsx
        tree-sitter-typescript
        tree-sitter-verilog
        tree-sitter-yaml
        tree-sitter-zig
      ]))
      emacsql
      emacsql-sqlite
    ];
  };

  orgProtocolDesktop = pkgs.makeDesktopItem {
    name = "org-protocol";
    desktopName = "Emacs Org Protocol Handler";
    icon = "emacs";
    categories = [ "Development" "TextEditor" ];
    keywords = [ "org-protocol" ];
    type = "Application";
    exec = "${emacsWithPackages}/bin/emacsclient -- %u";
    terminal = false;
    mimeTypes = [ "x-scheme-handler/org-protocol" ];
    startupWMClass = "Emacs";
  };
in
{
  options.eboskma.programs.emacs = {
    enable = mkEnableOption "activate emacs";

    package = mkPackageOption pkgs "emacs" { };

    daemon = mkOption {
      description = "Whether to enable emacs daemon";
      type = types.bool;
      default = true;
      example = false;
    };
  };

  config = mkIf cfg.enable {
    programs.emacs = {
      enable = true;
      package = emacsWithPackages;
    };

    services.emacs = mkIf cfg.daemon {
      enable = true;
      package = emacsWithPackages;
      client.enable = true;
      socketActivation.enable = true;
      defaultEditor = true;
    };

    home.file."emacs.d/early-init.el".source = tangleEmacsConfig "early-init.el";

    home.packages = with pkgs; [
      (texlive.combine {
        inherit (texlive) scheme-small wrapfig ulem capt-of;
      })
      orgProtocolDesktop
      nodePackages.bash-language-server
      aspell
      lldb
      (nil.overrideAttrs (_: { doCheck = false; }))
      nixpkgs-fmt
      python3
    ] ++
    (with aspellDicts; [ en en-computers en-science fy nl ]);

  };
}