From df49d99af4352f9eb38966ca924279ad7b180f62 Mon Sep 17 00:00:00 2001
From: Dmitry <ada.dmitry@gmail.com>
Date: Sat, 19 Sep 2026 10:56:42 +0300
Subject: [PATCH] =?UTF-8?q?fix(app):=20=D0=B4=D0=B0=D1=82=D0=B0=20=D0=B1?=
 =?UTF-8?q?=D0=B5=D0=B7=20=D0=B2=D1=80=D0=B5=D0=BC=D0=B5=D0=BD=D0=B8=20?=
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 =?UTF-8?q?=D0=BA=20UTC,=20=D0=B0=20=D0=BD=D0=B5=20=D0=B2=20=D0=BB=D0=BE?=
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DateTime.tryParse("2026-09-18") в Dart возвращает локальное время, не UTC —
на MSK (UTC+3) это трёхчасовой сдвиг относительно того, что сервер имел
в виду датой без времени. asDate() перетэговывает те же значения полей как
UTC вместо доверия tryParse; настоящий таймстемп с "Z"/смещением проходит
насквозь без изменений.
---
 app/lib/core/utils/json.dart | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/app/lib/core/utils/json.dart b/app/lib/core/utils/json.dart
index d891f94..970fd7d 100644
--- a/app/lib/core/utils/json.dart
+++ b/app/lib/core/utils/json.dart
@@ -29,7 +29,23 @@ bool asBool(Object? v) => v == true;
 DateTime? asDate(Object? v) {
   final s = asString(v);
   if (s == null || s.isEmpty) return null;
-  return DateTime.tryParse(s);
+  final parsed = DateTime.tryParse(s);
+  if (parsed == null) return null;
+  // A plain date ("2026-09-18") has no timezone of its own; `DateTime.tryParse` still
+  // tags it local, which silently shifts it by the machine's offset. Re-tag the same
+  // wall-clock fields as UTC so the date this API meant is the date callers get, on any
+  // machine — a full timestamp (already carrying "Z"/an offset) is left untouched.
+  if (parsed.isUtc) return parsed;
+  return DateTime.utc(
+    parsed.year,
+    parsed.month,
+    parsed.day,
+    parsed.hour,
+    parsed.minute,
+    parsed.second,
+    parsed.millisecond,
+    parsed.microsecond,
+  );
 }
 
 /// A list of JSON objects; anything else (including null) becomes an empty list.