Weekly session data.

src/lib/date.ts

@@ -34,6 +34,7 @@ import {
   addWeeks,
   subWeeks,
   endOfMinute,
+  isSameDay,
 } from 'date-fns';
 import { getDateLocale } from 'lib/lang';
 import { DateRange } from 'lib/types';
@@ -336,3 +337,16 @@ export function getCompareDate(compare: string, startDate: Date, endDate: Date)
 
   return { startDate: subMinutes(startDate, diff), endDate: subMinutes(endDate, diff) };
 }
+
+export function getDayOfWeekAsDate(dayOfWeek: number) {
+  const startOfWeekDay = startOfWeek(new Date());
+  const daysToAdd = [0, 1, 2, 3, 4, 5, 6].indexOf(dayOfWeek);
+  let currentDate = addDays(startOfWeekDay, daysToAdd);
+
+  // Ensure we're not returning a past date
+  if (isSameDay(currentDate, startOfWeekDay)) {
+    currentDate = addDays(currentDate, 7);
+  }
+
+  return currentDate;
+}

src/lib/prisma.ts

@@ -81,6 +81,18 @@ function getDateSQL(field: string, unit: string, timezone?: string): string {
   }
 }
 
+function getDateWeeklySQL(field: string) {
+  const db = getDatabaseType();
+
+  if (db === POSTGRESQL) {
+    return `EXTRACT(DOW FROM ${field})`;
+  }
+
+  if (db === MYSQL) {
+    return `DAYOFWEEK(${field})-1`;
+  }
+}
+
 export function getTimestampSQL(field: string) {
   const db = getDatabaseType();
 
@@ -284,6 +296,7 @@ export default {
   getCastColumnQuery,
   getDayDiffQuery,
   getDateSQL,
+  getDateWeeklySQL,
   getFilterQuery,
   getSearchParameters,
   getTimestampDiffSQL,