From abaf191c6f8363699b0bb5a222ed4a61e8d1e3d7 Mon Sep 17 00:00:00 2001
From: "Gustavo L de Mello (Guz)" <contact@guz.one>
Date: Sun, 8 Dec 2024 19:39:38 -0300
Subject: [PATCH] feat(tweaks): grip markdown viewer

---
 flake.nix             | 26 +++++++++++++++++++++++++-
 lua/dot013/tweaks.lua | 41 +++++++++++++++++++++++++++++++++++++++++
 neovim.nix            |  5 ++++-
 3 files changed, 70 insertions(+), 2 deletions(-)

diff --git a/flake.nix b/flake.nix
index a6d27ab..ca58480 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,11 +23,35 @@
         pkgs = import nixpkgs {inherit system overlays;};
       in
         f system pkgs);
+
+    grip = {
+      pkgs,
+      lib,
+    }: let
+      gripConf = pkgs.writeText "settings.py" ''
+        HOST = "0.0.0.0"
+      '';
+      gripHome = pkgs.stdenv.mkDerivation {
+        name = "grip-conf";
+        src = gripConf;
+        phases = ["installPhase"];
+        installPhase = ''
+          mkdir -p $out
+          cp $src $out/settings.py
+        '';
+      };
+    in
+      pkgs.writeShellScriptBin "grip" ''
+        export GRIPHOME="${gripHome}"
+          ${lib.getExe pkgs.python312Packages.grip} "$@"
+      '';
   in {
     packages = forAllSystems (system: pkgs: {
-      neovim = pkgs.callPackage ./neovim.nix {};
+      grip = pkgs.callPackage grip {};
+      neovim = pkgs.callPackage ./neovim.nix {inherit self;};
       default = self.packages.${system}.neovim;
     });
+
     devShells = forAllSystems (system: pkgs: {
       default = pkgs.mkShell {
         buildInputs = with pkgs; [
diff --git a/lua/dot013/tweaks.lua b/lua/dot013/tweaks.lua
index 9de2888..987dcdf 100644
--- a/lua/dot013/tweaks.lua
+++ b/lua/dot013/tweaks.lua
@@ -8,6 +8,47 @@ vim.api.nvim_create_autocmd("TextYankPost", {
 	pattern = "*",
 })
 
+local grip_channel = nil
+vim.api.nvim_create_user_command("GripStart", function()
+	if grip_channel then
+		return
+	end
+
+	local file = vim.api.nvim_buf_get_name(0)
+
+	local cmd = "grip " .. file
+
+	grip_channel = vim.fn.jobstart(cmd, {
+		stderr_buffered = true,
+		on_stderr = function(_, err)
+			vim.fn.jobstop(grip_channel)
+
+			local content = table.concat(err, "\n")
+			if content:len() > 0 then
+				vim.api.nvim_notify("Grip error: " .. content, vim.log.levels.ERROR, {})
+			end
+		end,
+		on_exit = function()
+			vim.fn.chanclose(grip_channel)
+			grip_channel = nil
+		end,
+	})
+end, {})
+
+vim.api.nvim_create_user_command("GripStop", function()
+	if grip_channel then
+		vim.fn.jobstop(grip_channel)
+	end
+end, {})
+
+vim.api.nvim_create_autocmd("Quit", {
+	callback = function()
+		if grip_channel then
+			vim.fn.jobstop(grip_channel)
+		end
+	end,
+})
+
 -- Move when highlighted
 vim.keymap.set("n", "J", "mzJ`z")
 
diff --git a/neovim.nix b/neovim.nix
index 528d4f2..75f1be6 100644
--- a/neovim.nix
+++ b/neovim.nix
@@ -1,4 +1,5 @@
 {
+  self,
   symlinkJoin,
   makeWrapper,
   runCommandLocal,
@@ -83,8 +84,10 @@
   ];
 
   packages = with pkgs; [
-    ripgrep
     lf
+    ripgrep
+
+    self.packages.${pkgs.system}.grip
   ];
 
   foldPlugins = builtins.foldl' (acc: next: acc ++ [next] ++ (foldPlugins (next.dependencies or []))) [];