From 853b01e2cadff12668f6671623972a566940ab4d Mon Sep 17 00:00:00 2001
From: MaysWind <i@mayswind.net>
Date: Sun, 2 Apr 2023 18:06:36 +0800
Subject: [PATCH] show message when force update exchange rates data and the
 data is up to date

---
 src/lib/utils.js           | 52 ++++++++++++++++++++++++++++++++++++++
 src/locales/en.js          |  1 +
 src/locales/zh_Hans.js     |  1 +
 src/store/exchangeRates.js |  7 +++++
 4 files changed, 61 insertions(+)

diff --git a/src/lib/utils.js b/src/lib/utils.js
index 45cc1052..da5e7714 100644
--- a/src/lib/utils.js
+++ b/src/lib/utils.js
@@ -36,6 +36,57 @@ function isBoolean(val) {
     return typeof(val) === 'boolean';
 }
 
+function isEquals(obj1, obj2) {
+    if (obj1 === obj2) {
+        return true;
+    }
+
+    if (isArray(obj1) && isArray(obj2)) {
+        if (obj1.length !== obj2.length) {
+            return false;
+        }
+
+        for (let i = 0; i < obj1.length; i++) {
+            if (!isEquals(obj1[i], obj2[i])) {
+                return false;
+            }
+        }
+
+        return true;
+    } else if (isObject(obj1) && isObject(obj2)) {
+        const keys1 = Object.keys(obj1);
+        const keys2 = Object.keys(obj2);
+
+        if (keys1.length !== keys2.length) {
+            return false;
+        }
+
+        const keyExistsMap2 = {};
+
+        for (let i = 0; i < keys2.length; i++) {
+            const key = keys2[i];
+
+            keyExistsMap2[key] = true;
+        }
+
+        for (let i = 0; i < keys1.length; i++) {
+            const key = keys1[i];
+
+            if (!keyExistsMap2[key]) {
+                return false;
+            }
+
+            if (!isEquals(obj1[key], obj2[key])) {
+                return false;
+            }
+        }
+
+        return true;
+    } else {
+        return obj1 === obj2;
+    }
+}
+
 function getUtcOffsetMinutesByUtcOffset(utcOffset) {
     if (!utcOffset) {
         return 0;
@@ -677,6 +728,7 @@ export default {
     isString,
     isNumber,
     isBoolean,
+    isEquals,
     getUtcOffsetMinutesByUtcOffset,
     getUtcOffsetByUtcOffsetMinutes,
     getTimezoneOffset,
diff --git a/src/locales/en.js b/src/locales/en.js
index 3031f6c6..6d8934e3 100644
--- a/src/locales/en.js
+++ b/src/locales/en.js
@@ -1001,6 +1001,7 @@ export default {
     'No exchange rates data': 'No exchange rates data',
     'There is no exchange rates data for your default currency': 'There is no exchange rates data for your default currency',
     'Exchange rates data has been updated': 'Exchange rates data has been updated',
+    'Exchange rates data is up to date': 'Exchange rates data is up to date',
     'Unable to get exchange rates data': 'Unable to get exchange rates data',
     'About': 'About',
     'Build Time': 'Build Time',
diff --git a/src/locales/zh_Hans.js b/src/locales/zh_Hans.js
index e5d7fa51..a471bcc6 100644
--- a/src/locales/zh_Hans.js
+++ b/src/locales/zh_Hans.js
@@ -1001,6 +1001,7 @@ export default {
     'No exchange rates data': '没有汇率数据',
     'There is no exchange rates data for your default currency': '没有您默认货币的汇率数据',
     'Exchange rates data has been updated': '汇率数据已更新',
+    'Exchange rates data is up to date': '汇率数据已是最新',
     'Unable to get exchange rates data': '无法获取汇率数据',
     'About': '关于',
     'Build Time': '编译时间',
diff --git a/src/store/exchangeRates.js b/src/store/exchangeRates.js
index 4d06332c..b538c758 100644
--- a/src/store/exchangeRates.js
+++ b/src/store/exchangeRates.js
@@ -35,6 +35,13 @@ export function getLatestExchangeRates(context, { silent, force }) {
                 return;
             }
 
+            const currentData = getExchangeRatesFromLocalStorage();
+
+            if (currentData && currentData.data && utils.isEquals(currentData.data, data.result)) {
+                reject({ message: 'Exchange rates data is up to date' });
+                return;
+            }
+
             context.commit(STORE_LATEST_EXCHANGE_RATES, {
                 time: now,
                 data: data.result