Sorting pluviometer inserted values to latest data points in MapModal

src/app/hooks/selectFromDB.js

@@ -182,6 +182,13 @@ function reducer(state = initialState, action) {
   };
 }
 
+function compare(a, b) {
+  if (a == b) return 0;
+  if (parseInt(a[0].slice(3, 5)) < parseInt(b[0].slice(3, 5))) return -1;
+  else if (parseInt(a[0].slice(0, 2)) < parseInt(b[0].slice(0, 2))) return -1;
+  return 0;
+}
+
 function useMarkers(isFocused) {
   const [state, dispatch] = useReducer(reducer, initialState);
 
@@ -190,39 +197,51 @@ function useMarkers(isFocused) {
   const addr = context.currentLocation;
 
   const parsePluviometer = (db_result) => {
-    if (db_result.rows.length <= 0) return [];
+    // if (db_result.rows.length <= 0) return [];
+    const points = [];
 
-    const values = {
-      pictures: null,
-      data: {
-        labels: [],
-        values: [],
-      },
+    const info = {
+      pictures: "[]",
       description: "",
       date: "",
     };
-    const start = Math.max(0, db_result.rows.length - 7);
-    for (let i = start; i < db_result.rows.length; ++i) {
+
+    for (let i = 0; i < db_result.rows.length; ++i) {
       var row = db_result.rows.item(i);
 
       description = row["Description"] ? "\n\n" + row["Description"] : "";
-
-      values.image = custom_assets.pluviometer;
-      values.date = row["Date"];
-      values.description =
+      info.date = row["Date"];
+      info.description =
         row["Precipitation"] + "mm" + ",  " + row["Date"] + description;
-      values.pictures = row["Images"];
-      values.data.labels.push(row["Date"].slice(0, 5));
-      values.data.values.push(parseInt(row["Precipitation"]));
+      info.pictures = row["Images"];
+
+      points.push([row["Date"].slice(0, 5), parseInt(row["Precipitation"])]);
     }
 
+    latestPoints = points.sort(compare).slice(-7);
+    if (latestPoints.length == 0) {
+      var labels = [];
+      var values = [];
+    }
+    var labels = latestPoints.map((i) => {
+      return i[0];
+    });
+    var values = latestPoints.map((i) => {
+      return i[1];
+    });
+
     const result = {
+      image: custom_assets.pluviometer,
       ID: ++ID,
       name: "pluviometer",
       title: "Pluviometro 1",
       coordinate: location,
       address: addr,
-      ...values,
+      data: {
+        labels: labels,
+        values: values,
+      },
+      ...info,
     };
 
     console.log(result);