feat：根据type获取metic的对应值

nezha-fronted/src/components/common/js/tools.js

@@ -689,6 +689,33 @@ export const tableSet = {
   }
 }
 
+export function  getMetricTypeValue(queryItem,type){
+  let copy=JSON.parse(JSON.stringify(queryItem));
+  switch (type) {
+    case 'min':
+      let min =copy.sort((x,y)=>{return parseFloat(x[1]) - parseFloat(y[1])})[0][1];
+      return min;
+    case 'max':
+      let max =copy.sort((x,y)=>{return parseFloat(y[1]) - parseFloat(x[1])})[0][1];
+      return max;
+    case 'avg':
+      copy = copy.map(t=>parseFloat(t[1]));
+      let sum = eval(copy.join('+'));
+      let avg = sum / copy.length;
+      return avg;
+    case 'last':
+      let last =copy.sort((x,y)=>{return parseFloat(y[0]) - parseFloat(x[0])})[0][1];
+      return last;
+    case 'first':
+      let first =copy.sort((x,y)=>{return parseFloat(y[0]) - parseFloat(x[0])})[copy.length][1];
+      return first;
+    case 'total':
+      copy = copy.map(t=>parseFloat(t[1]));
+      let total = eval(copy.join('+'));
+      return total;
+  }
+}
+
 export function blankPromise() {
   return new Promise(resolve => {resolve();});
 }