{ config, pkgs, ... }:

let
  c = config.theme.colors;
in
{
  programs.neovim = {
    enable    = true;
    viAlias   = true;
    vimAlias  = true;

    extraPackages = with pkgs; [
      lua-language-server
      nil
      nixfmt
      ripgrep
      fd
    ];

    plugins = with pkgs.vimPlugins; [
      # Gruvbox theme
      gruvbox-nvim

      # Treesitter — better syntax highlighting
      {
        plugin = nvim-treesitter.withAllGrammars;
        type   = "lua";
        config = ''
        require("nvim-treesitter").setup({
          highlight = { enable = true },
          indent    = { enable = true },
        })
      '';
}
      # File explorer
      {
        plugin = nvim-tree-lua;
        type   = "lua";
        config = ''
          require("nvim-tree").setup()
          vim.keymap.set("n", "<leader>e", "<cmd>NvimTreeToggle<cr>")
        '';
      }

      # Statusline
      {
        plugin = lualine-nvim;
        type   = "lua";
        config = ''
          require("lualine").setup({
            options = {
              theme = "gruvbox-material",
            },
          })
        '';
      }

      # Icons (needed by nvim-tree and lualine)
      nvim-web-devicons

      # Fuzzy finder
      {
        plugin = telescope-nvim;
        type   = "lua";
        config = ''
          local builtin = require("telescope.builtin")
          vim.keymap.set("n", "<leader>ff", builtin.find_files)
          vim.keymap.set("n", "<leader>fg", builtin.live_grep)
          vim.keymap.set("n", "<leader>fb", builtin.buffers)
        '';
      }

      # Comment toggling
      {
        plugin = comment-nvim;
        type   = "lua";
        config = ''require("Comment").setup()'';
      }

      # Show indentation guides
      {
        plugin = indent-blankline-nvim;
        type   = "lua";
        config = ''require("ibl").setup()'';
      }
    ];

    initLua = ''
      -- Leader key
      vim.g.mapleader = " "

      -- Colorscheme
      require("gruvbox").setup({
        contrast = "medium",
        transparent_mode = false,
      })
      vim.cmd("colorscheme gruvbox")

      -- Line numbers
      vim.opt.number         = true
      vim.opt.relativenumber = true

      -- Indentation
      vim.opt.tabstop     = 2
      vim.opt.shiftwidth  = 2
      vim.opt.expandtab   = true
      vim.opt.smartindent = true

      -- Search
      vim.opt.ignorecase = true
      vim.opt.smartcase  = true
      vim.opt.hlsearch   = false

      -- UI
      vim.opt.termguicolors = true
      vim.opt.signcolumn    = "yes"
      vim.opt.cursorline    = true
      vim.opt.scrolloff     = 8
      vim.opt.wrap          = false
      vim.opt.splitright    = true
      vim.opt.splitbelow    = true

      -- System clipboard
      vim.opt.clipboard = "unnamedplus"

      -- Keymaps
      local map = vim.keymap.set

      -- Better window navigation
      map("n", "<C-h>", "<C-w>h")
      map("n", "<C-j>", "<C-w>j")
      map("n", "<C-k>", "<C-w>k")
      map("n", "<C-l>", "<C-w>l")

      -- Move lines up/down in visual mode
      map("v", "J", ":m '>+1<cr>gv=gv")
      map("v", "K", ":m '<-2<cr>gv=gv")

      -- Keep cursor centered when scrolling
      map("n", "<C-d>", "<C-d>zz")
      map("n", "<C-u>", "<C-u>zz")

      -- Save and quit
      map("n", "<leader>w", "<cmd>w<cr>")
      map("n", "<leader>q", "<cmd>q<cr>")
    '';
  };
}