nixos-configs/common/home/neovim/default.nix

{
  config,
  pkgs,
  lib,
  nvim-theme-src,
  coc-stylelintplus,
  nixd,
  vimplugin-easytables-src,
  ...
}: let
  inherit (config.vars) hostName mainUser neovimIde;
  inherit (lib) fileContents hasPrefix optionalAttrs optionals removePrefix;
  inherit (pkgs) vimPlugins;

  buildPlugin = pname: src:
    pkgs.vimUtils.buildVimPlugin {
      inherit pname src;
      version = src.shortRev;
    };

  javaSdk = pkgs.temurin-bin-17;
  coc-stylelintplus-flake = coc-stylelintplus.packages.${pkgs.system}.default;
  nixdPkg = nixd.packages.${pkgs.system}.default;

  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
  flakeDir = "${removePrefix "/home/${mainUser}/" flakeEnv}";
in {
  assertions = [
    {
      assertion = neovimIde && hasPrefix "/home/${mainUser}/" flakeEnv || !neovimIde;
      message = ''
        Your $FLAKE environment variable needs to point to a directory in
        the main users' home to use the neovim module.
      '';
    }
  ];

  home = optionalAttrs neovimIde {
    packages = with pkgs; [
      gradle
      maven
      alejandra

      # FIXME: set nixd to use alejandra
      (writeShellApplication {
        name = "nixpkgs-fmt";
        runtimeInputs = [alejandra];
        text = "alejandra \"$@\"";
      })
    ];
  };

  xdg.dataFile = optionalAttrs neovimIde {
    ".gradle/gradle.properties".text = ''
      org.gradle.java.home = ${javaSdk}
    '';

    "${flakeDir}/.nixd.json".text = builtins.toJSON {
      nixpkgs = {
        expr = "import (builtins.getFlake \"${flakeDir}\").inputs.nixpkgs {}";
      };
      options.nixos = {
        expr = "(builtins.getFlake \"${flakeDir}\").nixosConfigurations.${hostName}.options";
      };
    };
  };

  programs = {
    java = optionalAttrs neovimIde {
      enable = true;
      package = javaSdk;
    };

    # I love doing typos
    bash.shellAliases = {
      nivm = "nvim";
      nivim = "nvim";
    };

    neovim = {
      enable = true;
      withNodeJs = true;
      withPython3 = true;
      withRuby = false;

      defaultEditor = true;
      viAlias = true;
      vimAlias = true;

      extraPackages =
        (with pkgs; [
          bat
          gcc
        ])
        ++ (optionals neovimIde [
            nixdPkg
          ]
          ++ (with pkgs; [
            clang-tools
            nodejs_latest
            nodePackages.npm
            nodePackages.neovim
            gradle
          ]));

      extraPython3Packages = ps:
        optionals neovimIde [
          ps.pylint
        ];

      coc = optionalAttrs neovimIde {
        enable = true;
        settings = {
          # General
          colors.enable = true;
          coc.preferences.formatOnType = true;
          diagnostic.checkCurrentLine = true;
          inlayHint.enable = false;

          # ESLint
          eslint = {
            format.enable = true;
            autoFixOnSave = true;
          };

          # Stylelint
          stylelintplus = {
            enable = true;
            cssInJs = true;
            autoFixOnSave = true;
            autoFixOnFormat = true;
          };
          css.validate = false;
          less.validate = false;
          scss.validate = false;
          wxss.validate = false;

          # Lua
          Lua = {
            misc.parameters = [
              "--metapath"
              "~/.cache/sumneko_lua/meta"
              "--logpath"
              "~/.cache/sumneko_lua/log"
            ];
            workspace.library = [
              "$\{3rd\}/luv/library"
            ];
          };
          sumneko-lua = {
            serverDir = "${pkgs.lua-language-server}/share/lua-language-server";
            enableNvimLuaDev = true;
          };

          languageserver = {
            # Nix
            nix = {
              command = "nixd";
              filetypes = ["nix"];
            };
          };

          # Java
          java = {
            maven.downloadSources = true;
            eclipse.downloadSources = true;

            format.settings.url = "eclipse-formatter.xml";

            jdt.ls = {
              java.home = "${javaSdk}";
              statusIcons = {
                "busy" = "Busy";
                "ready" = "OK";
                "warning" = "Warning";
                "error" = "Error";
              };
            };
          };

          # Bash
          bashIde.shellcheckPath = "${pkgs.shellcheck}/bin/shellcheck";

          markdownlint.config = {
            no-trailing-spaces = true;
            no-multiple-blanks = false;
            no-duplicate-heading = false;
            line-length = {
              tables = false;
            };
          };
        };
      };

      extraConfig = fileContents ./base.vim;
      extraLuaConfig = fileContents ./base.lua;

      plugins =
        [
          vimPlugins.fzfWrapper
          vimPlugins.fzf-vim
          vimPlugins.fugitive

          {
            plugin = vimPlugins.dracula-nvim.overrideAttrs {
              src = nvim-theme-src;
            };
            type = "viml";
            config = fileContents ./plugins/dracula.vim;
          }
          {
            plugin = vimPlugins.todo-comments-nvim;
            type = "lua";
            config =
              /*
              lua
              */
              ''require('todo-comments').setup()'';
          }
          {
            plugin = vimPlugins.gitsigns-nvim;
            type = "lua";
            config = fileContents ./plugins/gitsigns.lua;
          }
          {
            plugin = vimPlugins.indent-blankline-nvim;
            type = "lua";
            config = fileContents ./plugins/indent.lua;
          }
          {
            plugin = vimPlugins.mini-nvim;
            type = "lua";
            config = fileContents ./plugins/mini.lua;
          }
          {
            plugin = vimPlugins.codewindow-nvim;
            type = "lua";
            config = fileContents ./plugins/codewindow.lua;
          }
        ]
        ++ optionals neovimIde [
          vimPlugins.markdown-preview-nvim

          # Coc configured
          vimPlugins.coc-clangd
          vimPlugins.coc-cmake
          vimPlugins.coc-css
          vimPlugins.coc-eslint
          vimPlugins.coc-java
          vimPlugins.coc-sh
          coc-stylelintplus-flake
          {
            plugin = vimPlugins.coc-snippets;
            type = "viml";
            config = fileContents ./plugins/snippets.vim;
          }

          ## Lua
          vimPlugins.coc-sumneko-lua
          vimPlugins.neodev-nvim

          ## Fzf
          vimPlugins.coc-fzf

          vimPlugins.coc-highlight
          vimPlugins.coc-json
          vimPlugins.coc-pyright
          vimPlugins.coc-vimlsp
          vimPlugins.coc-yaml
          vimPlugins.coc-toml
          vimPlugins.coc-markdownlint
          vimPlugins.coc-tsserver

          {
            plugin = vimPlugins.nvim-autopairs;
            type = "lua";
            config = fileContents ./plugins/autopairs.lua;
          }
          {
            plugin = vimPlugins.lualine-nvim;
            type = "lua";
            config = fileContents ./plugins/lualine.lua;
          }
          {
            plugin = vimPlugins.neo-tree-nvim;
            type = "viml";
            config = ''
              ${fileContents ./plugins/neotree.vim}

              lua << EOF
                ${fileContents ./plugins/neotree.lua}
              EOF
            '';
          }
          {
            plugin = buildPlugin "easytables-nvim" vimplugin-easytables-src;
            type = "lua";
            config =
              /*
              lua
              */
              ''require('easytables').setup();'';
          }
        ]
        # Treesitter
        ++ [
          vimPlugins.nvim-treesitter-context
          vimPlugins.nvim-treesitter-textobjects
          {
            type = "viml";
            config = fileContents ./plugins/treesitter.vim;
            plugin = vimPlugins.nvim-treesitter.withPlugins (p: [
              p.awk
              p.bash
              p.c
              p.c_sharp
              p.cairo
              p.cmake
              p.comment
              p.cpp
              p.css
              p.csv
              p.cuda
              p.diff
              p.dockerfile
              p.dot
              p.git_config
              p.git_rebase
              p.gitattributes
              p.gitcommit
              p.gitignore
              p.go
              p.gomod
              p.gosum
              p.groovy
              p.haskell
              p.haskell_persistent
              p.hyprlang
              p.html
              p.ini
              p.java
              p.javascript
              p.jq
              p.jsdoc
              p.json
              p.json5
              p.jsonc
              p.jsonnet
              p.kotlin
              p.latex
              p.lua
              p.luadoc
              p.make
              p.markdown
              p.meson
              p.ninja
              p.nix
              p.passwd
              p.perl
              p.php
              p.phpdoc
              p.properties
              p.python
              p.rasi
              p.regex
              p.requirements
              p.ruby
              p.rust
              p.scss
              p.sql
              p.ssh_config
              p.toml
              p.todotxt
              p.typescript
              p.udev
              p.vim
              p.vimdoc
              p.vue
              p.xml
              p.yaml
            ]);
          }
        ];
    };
  };
}