From 8903b1d1ab21368d60fd478eb8969c01ca2f7e9b Mon Sep 17 00:00:00 2001
From: 2 * r + 2 * t <61896496+soramanew@users.noreply.github.com>
Date: Wed, 18 Jun 2025 17:34:11 +1000
Subject: scheme: handle no wallpaper dynamic scheme

Throw actually readable error and notify
---
 src/caelestia/utils/scheme.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'src/caelestia')

diff --git a/src/caelestia/utils/scheme.py b/src/caelestia/utils/scheme.py
index ac52ea7..1e95376 100644
--- a/src/caelestia/utils/scheme.py
+++ b/src/caelestia/utils/scheme.py
@@ -157,7 +157,19 @@ class Scheme:
 
     def _update_colours(self) -> None:
         if self.name == "dynamic":
-            self._colours = get_colours_for_image()
+            try:
+                self._colours = get_colours_for_image()
+            except FileNotFoundError:
+                if self.notify:
+                    notify(
+                        "-u",
+                        "critical",
+                        "Unable to set dynamic scheme",
+                        "No wallpaper set. Please set a wallpaper via `caelestia wallpaper` before setting a dynamic scheme.",
+                    )
+                raise ValueError(
+                    "No wallpaper set. Please set a wallpaper via `caelestia wallpaper` before setting a dynamic scheme."
+                )
         else:
             self._colours = read_colours_from_file(self.get_colours_path())
 
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