.dotfiles/dot_config/flake/home/helix.nix

{pkgs, ...}: {
  programs.helix = {
    enable = true;
    package = pkgs.unstable.helix;

    languages = {
      language-server = {
        clangd = {
          command = "clangd";
          args = ["--header-insertion=never"];
        };
        biome = {
          command = "biome";
          args = ["lsp-proxy"];
        };
        fish_lsp = {
          command = "fish-lsp";
          args = ["start"];
        };
        slangd = {
          command = "slangd";
        };
      };

      language = [
        {
          name = "fish";
          scope = "source.fish";
          auto-format = true;
          language-servers = [{name = "fish_lsp";}];
        }
        {
          name = "meson";
          scope = "source.meson";
          injection-regex = "meson";
          comment-token = "#";
          indent = {
            tab-width = 2;
            unit = "  ";
          };
          auto-format = true;
          formatter = {
            command = "muon";
            args = ["fmt" "-"];
          };
        }
        {
          name = "nix";
          scope = "source.nix";
          auto-format = true;
          formatter = {
            command = "alejandra";
            args = ["-q"];
          };
        }
        {
          name = "cpp";
          language-servers = ["clangd"];
        }
        {
          name = "python";
          language-servers = ["ruff" "basedpyright"];
        }
        {
          name = "objc";
          scope = "source.objc";
          file-types = ["m" "mm" "M"];
          injection-regex = "objc";
          roots = ["xcodeproj"];
          comment-token = "//";
          indent = {
            tab-width = 2;
            unit = "  ";
          };
          language-servers = [{name = "clangd";}];
        }
        {
          name = "slang";
          scope = "source.slang";
          file-types = ["slang"];
          auto-format = true;
          language-servers = [{name = "slangd";}];
          comment-token = "//";
        }
        # BiomeJS Setup
        {
          name = "javascript";
          language-servers = [
            {
              name = "typescript-language-server";
              except-features = ["format"];
            }
            "biome"
          ];
          auto-format = true;
          formatter = {
            command = "biome";
            args = ["format" "--stdin-file-path" "a.js"];
          };
        }
        {
          name = "typescript";
          language-servers = [
            {
              name = "typescript-language-server";
              except-features = ["format"];
            }
            "biome"
          ];
          auto-format = true;
          formatter = {
            command = "biome";
            args = ["format" "--stdin-file-path" "a.ts"];
          };
        }
        {
          name = "tsx";
          auto-format = true;
          language-servers = [
            {
              name = "typescript-language-server";
              except-features = ["format"];
            }
            "biome"
          ];
          formatter = {
            command = "biome";
            args = ["format" "--stdin-file-path" "a.tsx"];
          };
        }
        {
          name = "jsx";
          auto-format = true;
          language-servers = [
            {
              name = "typescript-language-server";
              except-features = ["format"];
            }
            "biome"
          ];
          formatter = {
            command = "biome";
            args = ["format" "--stdin-file-path" "a.jsx"];
          };
        }
        {
          name = "json";
          language-servers = [
            {
              name = "vscode-json-language-server";
              except-features = ["format"];
            }
            "biome"
          ];
        }
      ];

      grammar = [
        {
          name = "objc";
          source = {
            git = "https://github.com/tree-sitter-grammars/tree-sitter-objc";
            rev = "18802acf31d0b5c1c1d50bdbc9eb0e1636cab9ed";
          };
        }
        {
          name = "slang";
          source = {
            git = "https://github.com/tree-sitter-grammars/tree-sitter-slang";
            rev = "3ed23c04a412a0559162d9cadf96dfff7cb36079";
          };
        }
      ];
    };

    settings = {
      theme = "base16_terminal";
      editor = {
        auto-format = false;
        end-of-line-diagnostics = "warning";
        true-color = true;
        color-modes = true;
        completion-replace = true;
        rulers = [120];
        auto-save = {
          focus-lost = true;
        };

        bufferline = "multiple";
        line-number = "relative";

        inline-diagnostics = {
          cursor-line = "error";
        };

        statusline = {
          left = ["mode" "spinner" "spacer" "version-control" "file-name"];
        };

        file-picker = {
          git-ignore = true;
        };

        lsp = {
          display-inlay-hints = true;
          display-messages = true;
        };

        cursor-shape.insert = "bar";
        soft-wrap.enable = true;
      };

      keys = {
        normal = {
          C-right = "move_next_word_start";
          C-left = "move_prev_word_end";
          "=" = ":format";

          space = {
            F = "file_picker_in_current_buffer_directory";
          };

          g = {
            f = "no_op";
          };
        };
        insert = {
          C-right = "move_next_word_start";
          C-left = "move_prev_word_end";
        };
      };
    };
  };
}