Accomplished

README.md

@@ -40,6 +40,7 @@ Ejemplo: (con base en `new Date(2020,0,1)` como fecha de entrada)
   { label: '2019', startAt: '2019/01/01', endAt: '2019/12/31' },
   { label: '2018', startAt: '2018/01/01', endAt: '2018/12/31' },
   { label: '2017', startAt: '2017/01/01', endAt: '2017/12/31' },
+
   { label: 'diciembre', startAt: '2019/12/01', endAt: '2019/12/31' },
   { label: 'noviembre', startAt: '2019/11/01', endAt: '2019/11/30' },
   { label: 'octubre', startAt: '2019/10/01', endAt: '2019/10/31' }

src/filter.js

@@ -1,5 +1,60 @@
+const sub = require('date-fns/sub');
+const format = require('date-fns/format');
+const startOfMonth = require('date-fns/startOfMonth')
+const endOfMonth = require('date-fns/endOfMonth')
+const startOfYear = require('date-fns/startOfYear')
+const endOfYear = require('date-fns/endOfYear')
+
+const EXPECTED_FORMAT = 'yyyy/MM/dd';
+
 const makeFilter = (date) => {
-  let filters = [];
+  const filters = [];
+  const days = [7,28,90,365];
+
+  const objGen = (label,startAt,endAt)=>{
+    return {
+      label: label,
+      startAt: startAt,
+      endAt: endAt
+    }
+  }
+
+  const filterObj = (label, date, subtract) => {
+    const newFilter = objGen(
+      label,
+      format(sub(date, { days: subtract }), EXPECTED_FORMAT),
+      format(date, EXPECTED_FORMAT)
+    )
+    return newFilter;
+  }
+
+  const filtersByAmountDays = (i) =>{
+    const filter = filterObj(`Últimos ${i} días`, date, i);
+    filters.push(filter);
+  }
+
+  days.forEach(filtersByAmountDays);
+
+  for (let i = 1; i <= 3; i++) {
+    const yearlyRange = sub(date, {years: i});
+    const obj = objGen(
+      format(yearlyRange, 'yyyy'),
+      format(startOfYear(yearlyRange),EXPECTED_FORMAT),
+      format(endOfYear(yearlyRange),EXPECTED_FORMAT)
+    )
+    filters.push(obj);
+  }
+
+  for (let i = 1; i <= 3; i++) {
+    const monthlyRange = sub(date, {months: i});
+    const obj = objGen(
+      monthlyRange.toLocaleString('es-CO',{month:"long"}),
+      format(startOfMonth(monthlyRange), EXPECTED_FORMAT),
+      format(endOfMonth(monthlyRange), EXPECTED_FORMAT)
+    )
+    filters.push(obj);
+  }
+
   return filters;
 }