Add notetaker script

Add a script to quickly and easily create and edit a daily note.

lib/shared/home-manager-packages.nix

@@ -6,11 +6,13 @@ let
   inherit (pkgs) writeShellApplication;
 
   scripts = {
+    notetaker = writeShellApplication (import ./scripts/notetaker.nix);
     t = writeShellApplication (import ./scripts/t.nix { inherit pkgs; });
   };
 in
 with pkgs;
 [
+  scripts.notetaker
   scripts.t
 
   awscli2

lib/shared/scripts/notetaker.nix

@@ -0,0 +1,25 @@
+{
+  name = "notetaker";
+
+  runtimeInputs = [ ];
+
+  text = ''
+    # Based on https://github.com/CalinLeafshade/dots/blob/fe685d45201f267829b75fe5ca7e3da9d4aa4c02/bin/bin/notetaker.
+
+    today="$(date +%Y-%m-%d)"
+    note_path="''${NOTES_PATH:-$HOME/Documents/wiki}"
+    note_filename="$note_path/daily-notes/$(date +%Y)/$(date +%m)/$today.md"
+
+    if [[ ! -f "$note_filename" ]]; then
+      mkdir -p "$(dirname "$note_filename")"
+
+      echo "# $today" > "$note_filename"
+    fi
+
+    nvim -c "normal Go" \
+      -c "normal Go## $(date +%H:%M)" \
+      -c "normal G2o" \
+      -c "normal zz" \
+      -c "startinsert" "$note_filename"
+  '';
+}