Limit timestamps to valid range to prevent database errors when users enter pre-epoch dates.

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

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