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# Copyright 2025 Shota FUJI <pockawoooh@gmail.com>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
# SPDX-License-Identifier: 0BSD

{
  config,
  lib,
  pkgs,
  ...
}:
let
  tsVala = pkgs.fetchgit {
    url = "https://codeberg.org/pocka/tree-sitter-vala";
    rev = "093d98428caa4a6fe8b873fb508b022b33fd7f48";
    hash = "sha256-68CFO+SRkqJH8LwTbrxMbfkO2UaHtSnZhJvjKHPRs3E=";
  };

  allGrammars = (
    lib.filter (d: d.pname != "tree-sitter-vala") pkgs.vimPlugins.nvim-treesitter.allGrammars
  );
in
{
  config = {
    programs = {
      neovim = {
        enable = true;

        defaultEditor = true;

        withPython3 = false;
        withRuby = false;

        extraLuaConfig = builtins.readFile ./neovim/basic.lua;

        plugins = with pkgs.vimPlugins; [
          plenary-nvim
          {
            plugin = zen-mode-nvim;
            type = "lua";
            config = builtins.readFile ./neovim/zen-mode.lua;
          }
          {
            plugin = nvim-tree-lua;
            type = "lua";
            config = builtins.readFile ./neovim/nvim-tree.lua;
          }
          {
            plugin = telescope-nvim;
            type = "lua";
            config = builtins.readFile ./neovim/telescope.lua;
          }
          {
            plugin = telescope-file-browser-nvim;
            type = "lua";
            config = builtins.readFile ./neovim/telescope-file-browser.lua;
          }
          {
            plugin = indent-blankline-nvim;
            type = "lua";
            config = builtins.readFile ./neovim/indent-blankline.lua;
          }
          {
            plugin = lualine-nvim;
            type = "lua";
            config = builtins.readFile ./neovim/lualine.lua;
          }
          {
            plugin = nvim-treesitter.grammarToPlugin (
              pkgs.tree-sitter.buildGrammar {
                language = "vala";
                version = "0.1.1";
                src = tsVala;
                meta.homepage = "https://codeberg.org/pocka/tree-sitter-vala";
              }
            );
            type = "viml";

            # Either nvim, Nix, or nvim-treesitter does bad job at runtime path resolving.
            # So it includes nvim-treesitter's **hard-coded** query directory and registers
            # that directory before this custom grammar plugin. Because of this incorrect
            # runtimepath order, nvim-treesitter uses parser from the above grammar but reads
            # its forcibly included query.
            # As ~/.config/nvim is special directory and cannot "win" in load order, an
            # another directory is needed.
            config = ''
              set rtp^=~/.config/nvim-treesitter-overrides
            '';
          }
          {
            plugin = nvim-treesitter.withPlugins (_: allGrammars);

            type = "lua";

            config = builtins.readFile ./neovim/nvim-treesitter.lua;
          }
          { plugin = vim-flatbuffers; }
        ];
      };
    };

    xdg.configFile."nvim-treesitter-overrides/queries/vala/highlights.scm" = {
      source = tsVala + "/queries/highlights.scm";
    };

    xdg.configFile."nvim-treesitter-overrides/queries/vala/locals.scm" = {
      source = tsVala + "/queries/locals.scm";
    };
  };
}