From 420f811488a5b0ca76d0dfe2e99845e32cc7891a Mon Sep 17 00:00:00 2001
From: Misaka_Company <pengqiangqiang0@gmail.com>
Date: Mon, 13 Apr 2026 17:52:50 +0800
Subject: [PATCH] fix(timezone): use UTC for database storage and local time
 for UI display
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Backend changes:
- SQL Server dialect: GETDATE() → SYSUTCDATETIME()
- MySQL dialect: NOW() → UTC_TIMESTAMP()
- Ensures OperationTime and EndTime use consistent UTC timezone

Frontend changes:
- formatDateTime: display UTC timestamps in user's local timezone
- Uses getFullYear/getMonth/getDate/getHours (local) instead of UTC methods

Data migration:
- Executed migration script to fix historical OperationTime records
- All existing records now have correct UTC timestamps
- Execution duration now accurate (minutes, not hours)

Impact:
- New executions store UTC timestamps correctly
- UI displays times in user's local timezone (UTC+8 for CN users)
- Historical data corrected via migration
- Time difference between OperationTime and EndTime now accurate
---
 .../services/database/dialects/mysql-dialect.ts     |  2 +-
 .../services/database/dialects/sqlserver-dialect.ts |  2 +-
 .../src/components/CleanerOperationHistoryModal.tsx | 13 +++++++------
 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/main/services/database/dialects/mysql-dialect.ts b/src/main/services/database/dialects/mysql-dialect.ts
index 28f88a6..53b19a1 100644
--- a/src/main/services/database/dialects/mysql-dialect.ts
+++ b/src/main/services/database/dialects/mysql-dialect.ts
@@ -27,7 +27,7 @@ export class MySqlDialect implements SqlDialect {
   }
 
   currentTimestamp(): string {
-    return 'NOW()'
+    return 'UTC_TIMESTAMP()'
   }
 
   upsert(params: {
diff --git a/src/main/services/database/dialects/sqlserver-dialect.ts b/src/main/services/database/dialects/sqlserver-dialect.ts
index 7dd4d42..51c41e8 100644
--- a/src/main/services/database/dialects/sqlserver-dialect.ts
+++ b/src/main/services/database/dialects/sqlserver-dialect.ts
@@ -26,7 +26,7 @@ export class SqlServerDialect implements SqlDialect {
   }
 
   currentTimestamp(): string {
-    return 'GETDATE()'
+    return 'SYSUTCDATETIME()'
   }
 
   upsert(params: {
diff --git a/src/renderer/src/components/CleanerOperationHistoryModal.tsx b/src/renderer/src/components/CleanerOperationHistoryModal.tsx
index 3e5ec77..4a178ca 100644
--- a/src/renderer/src/components/CleanerOperationHistoryModal.tsx
+++ b/src/renderer/src/components/CleanerOperationHistoryModal.tsx
@@ -88,12 +88,13 @@ const formatDateTime = (dateStr: string | Date | null | undefined): string => {
     return String(dateStr)
   }
 
-  const year = date.getUTCFullYear()
-  const month = String(date.getUTCMonth() + 1).padStart(2, '0')
-  const day = String(date.getUTCDate()).padStart(2, '0')
-  const hours = String(date.getUTCHours()).padStart(2, '0')
-  const minutes = String(date.getUTCMinutes()).padStart(2, '0')
-  const seconds = String(date.getUTCSeconds()).padStart(2, '0')
+  // Use local time instead of UTC for display
+  const year = date.getFullYear()
+  const month = String(date.getMonth() + 1).padStart(2, '0')
+  const day = String(date.getDate()).padStart(2, '0')
+  const hours = String(date.getHours()).padStart(2, '0')
+  const minutes = String(date.getMinutes()).padStart(2, '0')
+  const seconds = String(date.getSeconds()).padStart(2, '0')
 
   return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`
 }