From 31edce0276027f5a411323823d5c451fc47b7b64 Mon Sep 17 00:00:00 2001
From: Eugene Burmakin <iamfrey@gmail.com>
Date: Tue, 9 Dec 2025 00:03:39 +0100
Subject: [PATCH] Limit timestamps to valid range to prevent database errors
 when users enter pre-epoch dates.

---
 CHANGELOG.md      |  2 +-
 lib/timestamps.rb | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 722447aa..a7fdb3e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Cities visited during a trip are now being calculated correctly. #547 #641
 - Points on the map are now show time in user's timezone. #580
-- Date range inputs now handle pre-epoch dates gracefully by clamping to valid PostgreSQL integer range (1970-2038), preventing database errors when users enter dates like year 1000.
+- Date range inputs now handle pre-epoch dates gracefully by clamping to valid PostgreSQL integer range. #685
 
 
 # [0.36.2] - 2025-12-06
diff --git a/lib/timestamps.rb b/lib/timestamps.rb
index 1912de46..59273d59 100644
--- a/lib/timestamps.rb
+++ b/lib/timestamps.rb
@@ -1,13 +1,13 @@
 # frozen_string_literal: true
 
 module Timestamps
-  MIN_TIMESTAMP = Time.zone.parse('1970-01-01').to_i
-  MAX_TIMESTAMP = Time.zone.parse('2100-01-01').to_i
-
   def self.parse_timestamp(timestamp)
+    min_timestamp = Time.zone.parse('1970-01-01').to_i
+    max_timestamp = Time.zone.parse('2100-01-01').to_i
+
     parsed = DateTime.parse(timestamp).to_time.to_i
 
-    parsed.clamp(MIN_TIMESTAMP, MAX_TIMESTAMP)
+    parsed.clamp(min_timestamp, max_timestamp)
   rescue StandardError
     result =
       if timestamp.to_s.length > 10
@@ -16,6 +16,6 @@ module Timestamps
         timestamp.to_i
       end
 
-    result.clamp(MIN_TIMESTAMP, MAX_TIMESTAMP)
+    result.clamp(min_timestamp, max_timestamp)
   end
 end