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# nixos-config - My current NixOS configuration
#
# Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
# SPDX-License-Identifier: GPL-3.0-or-later
#
# This file is part of my nixos-config.
#
# You should have received a copy of the License along with this program.
# If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
{
  config,
  lib,
  ...
}: let
  cfg = config.soispha.programs.nvim;
in {
  home-manager.users.soispha.programs.nixvim = lib.mkIf cfg.enable {
    opts.completeopt = [
      "menu" # Show completions in a menu
      "menuone" # Also open menu, when only one completion exists
      "noselect" # Do not pre select one of the completions
    ];

    keymaps = [
      {
        key = "hh";
        mode = ["i"];
        action.__raw = ''
          function()
            require('cmp').select_next_item()
          end
        '';
        options.desc = "go forward in completion menu";
      }
      {
        key = "uu";
        mode = ["i"];
        action.__raw = ''
          function()
            require('cmp').confirm()
          end
        '';
        options.desc = "confirm the selected item";
      }

      {
        key = "<C-d>";
        mode = ["i"];
        action.__raw = ''
          function()
            require('cmp').mapping.scroll_docs(-4)
          end
        '';
        options.desc = "Scroll up by four lines";
      }
      {
        key = "<C-f>";
        mode = ["i"];
        action.__raw = ''
          function()
            require('cmp').mapping.scroll_docs(4)
          end
        '';
        options.desc = "Scroll down by four lines";
      }
    ];

    plugins.cmp = {
      /*
      TODO: integrate this:
      ```lua
        enabled = {
        function()
            -- disable completion in comments
            local context = require 'cmp.config.context'
            -- keep command mode completion enabled when cursor is in a comment
            -- te
            if vim.api.nvim_get_mode().mode == 'c' then
                return true
            else
                return not context.in_treesitter_capture("comment")
                    and not context.in_syntax_group("Comment")
            end
        end
        },
      ```
      */
      enable = true;
      autoEnableSources = true;

      settings = {
        mapping = {};

        snippet.expand = "function(args) require('luasnip').lsp_expand(args.body) end";

        sources = [
          {name = "nvim_lsp";}
          {name = "luasnip";}
          {name = "path";}
          {name = "git";} # TODO: I might want to add config to allow all issues/prs <2023-10-16>
          # {name = "convertionalcommits";} # TODO: Useless without commitlint [https://commitlint.js.org/] <2023-10-16>
          # {name = "rg";} # TODO: This might really RIP-grep my system <2023-10-16>
          # {name = "buffer";}
          # {name = "digraphs";}
          {name = "calc";}
        ];
      };
    };
  };
}