From a671f95bee1abb22e2ab0b62bb718295cd6cbb53 Mon Sep 17 00:00:00 2001
From: Phantom <59059173+EurFelux@users.noreply.github.com>
Date: Thu, 21 Aug 2025 10:03:07 +0800
Subject: [PATCH] feat(utils): show weekday in date and datetime prompt
 variables (#9362)
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* feat(utils): 优化日期时间变量替换格式

为 {{date}} 和 {{datetime}} 变量替换添加更详细的格式选项，包括星期、年月日和时间信息

* test(prompt): 更新测试中日期时间的本地化格式
---
 .../src/utils/__tests__/prompt.test.ts        | 24 ++++++++++++++++---
 src/renderer/src/utils/prompt.ts              | 17 +++++++++++--
 2 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/src/renderer/src/utils/__tests__/prompt.test.ts b/src/renderer/src/utils/__tests__/prompt.test.ts
index ab4be618c9..6d990c16eb 100644
--- a/src/renderer/src/utils/__tests__/prompt.test.ts
+++ b/src/renderer/src/utils/__tests__/prompt.test.ts
@@ -133,7 +133,15 @@ describe('prompt', () => {
       const result = await replacePromptVariables(userPrompt, assistant.model?.name)
       const expectedPrompt = `
 以下是一些辅助信息:
-  - 日期和时间: ${mockDate.toLocaleString()};
+  - 日期和时间: ${mockDate.toLocaleString(undefined, {
+    weekday: 'short',
+    year: 'numeric',
+    month: 'numeric',
+    day: 'numeric',
+    hour: 'numeric',
+    minute: 'numeric',
+    second: 'numeric'
+  })};
   - 操作系统: macOS;
   - 中央处理器架构: darwin64;
   - 语言: zh-CN;
@@ -176,7 +184,12 @@ describe('prompt', () => {
       basePrompt = await replacePromptVariables(initialPrompt, assistant.model?.name)
       expectedBasePrompt = `
         System Information:
-        - Date: ${mockDate.toLocaleDateString()}
+        - Date: ${mockDate.toLocaleDateString(undefined, {
+          weekday: 'short',
+          year: 'numeric',
+          month: 'numeric',
+          day: 'numeric'
+        })}
         - User: MockUser
 
         Instructions: Be helpful.
@@ -239,7 +252,12 @@ describe('prompt', () => {
       const basePrompt = await replacePromptVariables(initialPrompt, assistant.model?.name)
       const expectedBasePrompt = `
         System Information:
-        - Date: ${mockDate.toLocaleDateString()}
+        - Date: ${mockDate.toLocaleDateString(undefined, {
+          weekday: 'short',
+          year: 'numeric',
+          month: 'numeric',
+          day: 'numeric'
+        })}
         - User: MockUser
 
         Instructions: Be helpful.
diff --git a/src/renderer/src/utils/prompt.ts b/src/renderer/src/utils/prompt.ts
index 4f7b9d5408..85766953ba 100644
--- a/src/renderer/src/utils/prompt.ts
+++ b/src/renderer/src/utils/prompt.ts
@@ -176,7 +176,12 @@ export const replacePromptVariables = async (userSystemPrompt: string, modelName
 
   const now = new Date()
   if (userSystemPrompt.includes('{{date}}')) {
-    const date = now.toLocaleDateString()
+    const date = now.toLocaleDateString(undefined, {
+      weekday: 'short',
+      year: 'numeric',
+      month: 'numeric',
+      day: 'numeric'
+    })
     userSystemPrompt = userSystemPrompt.replace(/{{date}}/g, date)
   }
 
@@ -186,7 +191,15 @@ export const replacePromptVariables = async (userSystemPrompt: string, modelName
   }
 
   if (userSystemPrompt.includes('{{datetime}}')) {
-    const datetime = now.toLocaleString()
+    const datetime = now.toLocaleString(undefined, {
+      weekday: 'short',
+      year: 'numeric',
+      month: 'numeric',
+      day: 'numeric',
+      hour: 'numeric',
+      minute: 'numeric',
+      second: 'numeric'
+    })
     userSystemPrompt = userSystemPrompt.replace(/{{datetime}}/g, datetime)
   }