{ config, lib, ... }:

let
  inherit (lib.mod) leader cmd ctrl;
in
{
  vim.opt = {
    # Better Unix support
    viewoptions = lib.mkDefault [ "folds" "options" "cursor" "unix" "slash" ];
    encoding = lib.mkDefault "utf-8";

    # Enable 24-bit color
    termguicolors = lib.mkDefault true;

    # Other options
    backspace = lib.mkDefault [ "indent" "eol" "start" ];
    laststatus = lib.mkDefault 2;
    showmode = lib.mkDefault false;

    # Tabs as spaces
    expandtab = lib.mkDefault true;
    tabstop = lib.mkDefault 2;
    softtabstop = lib.mkDefault 2;
    shiftwidth = lib.mkDefault 2;

    # Fixes broken cursor on Linux
    guicursor = lib.mkDefault "";

    # Disable mouse / touchpad
    mouse = lib.mkDefault "";

    # Incremental substitutin
    inccommand = lib.mkDefault "split";

    # Hide files when leaving them.
    hidden = lib.mkDefault true;
    # Show line numbers.
    number = lib.mkDefault true;
    # Minimum line number column width.
    numberwidth = lib.mkDefault 1;
    # Number of screen lines to use for the commandline.
    cmdheight = lib.mkDefault 2;
    # Lines length limit (0 if no limit).
    textwidth = lib.mkDefault 0;
    # Don't cut lines in the middle of a work.
    linebreak = lib.mkDefault true;
    # Show matching parenthesis.
    showmatch = lib.mkDefault true;
    # Time during which the matching parenthesis is shown.
    matchtime = lib.mkDefault 2;
    # Sensible default line auto cutting and formatting.
    formatoptions = lib.mkDefault "jtcrq";
    # Copy/Past to/from clipboard.
    clipboard = lib.mkDefault "unnamedplus";
    # Highlight line cursor is currently on.
    cursorline = lib.mkDefault true;
    # Invisible characters representation when :set list
    listchars = lib.mkDefault {
      tab = "→ ";
      trail = "~";
      nbsp = "␣";
      eol = "¬";
    };

    # Search
    # Incremental search.
    incsearch = lib.mkDefault true;
    # Case insensitive.
    ignorecase = lib.mkDefault true;
    # Case insensitive if no uppercase letter in pattern, case sensitive otherwise.
    smartcase = lib.mkDefault true;

    # Fold level
    foldlevel = lib.mkDefault 99;
    foldlevelstart = lib.mkDefault 99;
    foldminlines = lib.mkDefault 3;
    foldnestmax = lib.mkDefault 5;
  };

  plugins.navigation.nvim-tree.enable = lib.mkDefault true;

  vim.keymap.set = with lib.nix2lua; [
    {
      mode = "n";
      lhs = ctrl "z";
      rhs = lambda0 (set "vim.opt.hlsearch" false);
      desc = "Clear search highlighting";
    }
  ]
  ++ lib.optionals config.plugins.navigation.nvim-tree.enable [
    {
      mode = "n";
      lhs = leader "nt";
      rhs = cmd "NvimTreeToggle";
      desc = "Open/Close file tree";
    }
    {
      mode = "n";
      lhs = leader "nf";
      rhs = cmd "NvimTreeFindFile";
      desc = "Open file tree and find current file";
    }
  ];
}