From df6264edf6dc16aa391e349b660304389f25b02f Mon Sep 17 00:00:00 2001
From: Tevin <tingquanren@163.com>
Date: Thu, 06 Apr 2023 11:57:46 +0800
Subject: [PATCH] 调整工具集内容,创建小功能集Helper新文件

---
 common/Tools.js |   37 +++++++++++++++++++++----------------
 1 files changed, 21 insertions(+), 16 deletions(-)

diff --git a/common/Tools.js b/common/Tools.js
index 3fbb8a8..d7f7179 100644
--- a/common/Tools.js
+++ b/common/Tools.js
@@ -1,5 +1,5 @@
 /**
- * Tools
+ * Tools - 工具集
  * @author Tevin
  */
 
@@ -41,20 +41,6 @@
         } else {
             return null;
         }
-    }
-
-    /**
-     * 读取文件 base64
-     * @param {File} file
-     * @return {Promise<string>}
-     */
-    static getFileBase64(file) {
-        return new Promise((resolve, reject) => {
-            const reader = new FileReader();
-            reader.onload = () => resolve(reader.result);
-            reader.onerror = error => reject(error);
-            reader.readAsDataURL(file);
-        });
     }
 
     /**
@@ -516,6 +502,23 @@
         return /^1[3456789]\d{9}$/.test('' + phone);
     }
 
+    /**
+     * 转换周数到日期
+     * @param year
+     * @param week
+     * @param weekDay 需要输出星期几对应的日期 (1~7)
+     * @return {Date}
+     */
+    static transWeekIndexToDate(year, week, weekDay) {
+        const yearStart = moment([year, 0, 1]);
+        const dayLong = 24 * 60 * 60 * 1000;
+        const firstWeekLong = (7 - yearStart.day()) * dayLong;
+        const weeksLong = (week - 1) * 7 * dayLong;
+        const weekDayLong = weekDay * dayLong;
+        const dayTimestamp = yearStart.valueOf() + firstWeekLong + weeksLong + weekDayLong;
+        return moment(dayTimestamp).format('YYYY-MM-DD');
+    }
+
 }
 
 // h5 中,实现 rem 转换 px
@@ -531,4 +534,6 @@
         const px = (value - p1.x) * (p2.y - p1.y) / (p2.x - p1.x) + p1.y;
         console.info(Math.round(px) + 'px');
     };
-}
\ No newline at end of file
+}
+
+global.Tools = Tools;
\ No newline at end of file

--
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