✨ feat(aiCaller.js): add method to calculate time difference for memory timestamps in context introduction

lib/ai/aiCaller.js

@@ -96,6 +96,32 @@ class AiCaller {
     return fullPrompt;
   }
 
+  /**
+   * 计算时间差
+   * @param pastTime 过去时间戳
+   * @returns {string} 时间差字符串
+   */
+  calculateTimeDifference(pastTime) {
+    const now = Date.now();
+    const diff = now - pastTime;
+
+    const days = Math.floor(diff / (1000 * 60 * 60 * 24));
+    const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
+    const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
+
+    let result = '';
+    if (days > 0) {
+      result += `${days}天`;
+    }
+    if (hours > 0) {
+      result += `${hours}小时`;
+    }
+    if (minutes > 0) {
+      result += `${minutes}分钟`;
+    }
+    return result || '刚刚';
+  }
+
   /**
    * 获取系统提示词
    * @param {object} e 上下文事件对象
@@ -140,7 +166,8 @@ class AiCaller {
       if (memories && memories.length > 0) {
         contextIntro += '你可能会用到的记忆,请按情况使用,如果不合语境请忽略,请结合记忆时间和当前时间智能判断:\n';
         memories.forEach((memory, index) => {
-          contextIntro += `${index + 1}. 关键词:${memory.keywords},内容:${memory.data},记忆创建时间:${memory.createdAt}\n`;
+          const timeDiff = this.calculateTimeDifference(memory.createdAt);
+          contextIntro += `${index + 1}. 关键词:${memory.keywords},内容:${memory.data},记忆创建时间:${memory.createdAt},距离现在:${timeDiff}\\n`;
         });
         contextIntro += '\n';
       }