refactor: extract isUseTrends() function

dist/datasource-zabbix/datasource.js

@@ -250,12 +250,12 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
             }
 
             // Create request for each target
-            var promises = _.map(options.targets, function (target) {
+            var promises = _.map(options.targets, function (t) {
               var timeFrom = Math.ceil(dateMath.parse(options.range.from) / 1000);
               var timeTo = Math.ceil(dateMath.parse(options.range.to) / 1000);
 
               // Prevent changes of original object
-              target = _.cloneDeep(target);
+              var target = _.cloneDeep(t);
               _this.replaceTargetVariables(target, options);
 
               // Apply Time-related functions (timeShift(), etc)
@@ -270,9 +270,7 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
                 timeTo = time_to;
               }
 
-              var useTrendsFrom = Math.ceil(dateMath.parse('now-' + _this.trendsFrom) / 1000);
-              var useTrendsRange = Math.ceil(utils.parseInterval(_this.trendsRange) / 1000);
-              var useTrends = _this.trends && (timeFrom <= useTrendsFrom || timeTo - timeFrom >= useTrendsRange);
+              var useTrends = _this.isUseTrends([timeFrom, timeTo]);
 
               // Metrics or Text query mode
               if (target.mode !== 1) {
@@ -639,6 +637,18 @@ System.register(['lodash', 'app/core/utils/datemath', './utils', './migrations',
               });
             });
           }
+        }, {
+          key: 'isUseTrends',
+          value: function isUseTrends(timeRange) {
+            var _timeRange = _slicedToArray(timeRange, 2),
+                timeFrom = _timeRange[0],
+                timeTo = _timeRange[1];
+
+            var useTrendsFrom = Math.ceil(dateMath.parse('now-' + this.trendsFrom) / 1000);
+            var useTrendsRange = Math.ceil(utils.parseInterval(this.trendsRange) / 1000);
+            var useTrends = this.trends && (timeFrom <= useTrendsFrom || timeTo - timeFrom >= useTrendsRange);
+            return useTrends;
+          }
         }]);
 
         return ZabbixAPIDatasource;