# ==========================================
# NEOVIM CONFIGURATION (via Nixvim)
# ==========================================
# Gruvbox theme, LSP, Treesitter, Telescope, file tree.
# ==========================================
{ config, pkgs, ... }:

{
  programs.nixvim = {
    enable = true;

    opts = {
      number = true;
      relativenumber = true;
      shiftwidth = 2;
      tabstop = 2;
      expandtab = true;
      smartindent = true;
      wrap = false;
      swapfile = false;
      backup = false;
      undofile = true;
      hlsearch = false;
      incsearch = true;
      termguicolors = true;
      scrolloff = 8;
      signcolumn = "yes";
      updatetime = 50;
      clipboard = "unnamedplus";
    };

    globals = {
      mapleader = " ";
      maplocalleader = " ";
    };

    # Gruvbox colorscheme — matches omarchy aesthetic
    colorschemes.gruvbox = {
      enable = true;
      settings = {
        contrast_dark = "hard";
        transparent_mode = true;
      };
    };

    # Treesitter (syntax highlighting)
    plugins.treesitter = {
      enable = true;
      settings.highlight.enable = true;
      settings.indent.enable = true;
    };

    # Telescope (fuzzy finder)
    plugins.telescope = {
      enable = true;
      keymaps = {
        "<leader>ff" = { action = "find_files"; options.desc = "Find files"; };
        "<leader>fg" = { action = "live_grep"; options.desc = "Live grep"; };
        "<leader>fb" = { action = "buffers"; options.desc = "Buffers"; };
        "<leader>fh" = { action = "help_tags"; options.desc = "Help tags"; };
        "<leader>fr" = { action = "oldfiles"; options.desc = "Recent files"; };
      };
    };

    # Neo-tree (file tree)
    plugins.neo-tree = {
      enable = true;
    };

    # LSP
    plugins.lsp = {
      enable = true;
      servers = {
        nil_ls.enable = true;        # Nix
        pyright.enable = true;       # Python
        ts_ls.enable = true;         # TypeScript/JavaScript
        bashls.enable = true;        # Bash
        jsonls.enable = true;        # JSON
        yamlls.enable = true;        # YAML
        html.enable = true;          # HTML
        cssls.enable = true;         # CSS
      };
    };

    # Autocompletion
    plugins.cmp = {
      enable = true;
      autoEnableSources = true;
      settings = {
        sources = [
          { name = "nvim_lsp"; }
          { name = "path"; }
          { name = "buffer"; }
        ];
        mapping = {
          "<C-n>" = "cmp.mapping.select_next_item()";
          "<C-p>" = "cmp.mapping.select_prev_item()";
          "<C-y>" = "cmp.mapping.confirm({ select = true })";
          "<C-Space>" = "cmp.mapping.complete()";
        };
      };
    };

    # Status line
    plugins.lualine = {
      enable = true;
      settings.options.theme = "gruvbox";
    };

    # Autopairs
    plugins.nvim-autopairs.enable = true;

    # Git signs in the gutter
    plugins.gitsigns.enable = true;

    # Which-key (show keybindings)
    plugins.which-key.enable = true;

    # Keymaps
    keymaps = [
      { key = "<leader>e"; action = "<cmd>Neotree toggle<CR>"; options.desc = "Toggle file tree"; }
      { key = "<leader>w"; action = "<cmd>w<CR>"; options.desc = "Save"; }
      { key = "<leader>q"; action = "<cmd>q<CR>"; options.desc = "Quit"; }
      # Window navigation
      { key = "<C-h>"; action = "<C-w>h"; options.desc = "Move left"; }
      { key = "<C-j>"; action = "<C-w>j"; options.desc = "Move down"; }
      { key = "<C-k>"; action = "<C-w>k"; options.desc = "Move up"; }
      { key = "<C-l>"; action = "<C-w>l"; options.desc = "Move right"; }
    ];
  };
}