From ed24682bc360df2928e030239cca737294f12af9 Mon Sep 17 00:00:00 2001
From: Martin Ueding <mu@martin-ueding.de>
Date: Sun, 9 Jun 2024 11:41:23 +0200
Subject: [PATCH] GH-109: Improve error message when there are no activities

---
 geo_activity_playground/__main__.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/geo_activity_playground/__main__.py b/geo_activity_playground/__main__.py
index aac2eba..db41778 100644
--- a/geo_activity_playground/__main__.py
+++ b/geo_activity_playground/__main__.py
@@ -122,6 +122,12 @@ def make_activity_repository(
     if "strava" in config and not skip_strava:
         import_from_strava_api(repository)
 
+    if len(repository) == 0:
+        logger.error(
+            f"No activities found. You need to either add activity files (GPX, FIT, …) to {basedir/'Activities'} or set up the Strava API. Starting without any activities is unfortunately not supported."
+        )
+        sys.exit(1)
+
     embellish_time_series(repository)
     compute_tile_visits(repository)
     compute_tile_evolution()