feat(api): add insights endpoints

packages/db/src/services/chart.service.ts

@@ -1,8 +1,10 @@
 import { escape } from 'sqlstring';
 
-import { stripLeadingAndTrailingSlashes } from '@openpanel/common';
+import { DateTime, stripLeadingAndTrailingSlashes } from '@openpanel/common';
 import type {
   IChartEventFilter,
+  IChartInput,
+  IChartRange,
   IGetChartDataInput,
 } from '@openpanel/validation';
 
@@ -441,3 +443,240 @@ export function getEventFiltersWhereClause(filters: IChartEventFilter[]) {
 
   return where;
 }
+
+export function getChartStartEndDate(
+  {
+    startDate,
+    endDate,
+    range,
+  }: Pick<IChartInput, 'endDate' | 'startDate' | 'range'>,
+  timezone: string,
+) {
+  const ranges = getDatesFromRange(range, timezone);
+
+  if (startDate && endDate) {
+    return { startDate: startDate, endDate: endDate };
+  }
+
+  if (!startDate && endDate) {
+    return { startDate: ranges.startDate, endDate: endDate };
+  }
+
+  return ranges;
+}
+
+export function getDatesFromRange(range: IChartRange, timezone: string) {
+  if (range === '30min' || range === 'lastHour') {
+    const minutes = range === '30min' ? 30 : 60;
+    const startDate = DateTime.now()
+      .minus({ minute: minutes })
+      .startOf('minute')
+      .setZone(timezone)
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('minute')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === 'today') {
+    const startDate = DateTime.now()
+      .setZone(timezone)
+      .startOf('day')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('day')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === 'yesterday') {
+    const startDate = DateTime.now()
+      .minus({ day: 1 })
+      .setZone(timezone)
+      .startOf('day')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .minus({ day: 1 })
+      .setZone(timezone)
+      .endOf('day')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === '7d') {
+    const startDate = DateTime.now()
+      .minus({ day: 7 })
+      .setZone(timezone)
+      .startOf('day')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('day')
+      .plus({ millisecond: 1 })
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === '6m') {
+    const startDate = DateTime.now()
+      .minus({ month: 6 })
+      .setZone(timezone)
+      .startOf('day')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('day')
+      .plus({ millisecond: 1 })
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === '12m') {
+    const startDate = DateTime.now()
+      .minus({ month: 12 })
+      .setZone(timezone)
+      .startOf('month')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('month')
+      .plus({ millisecond: 1 })
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === 'monthToDate') {
+    const startDate = DateTime.now()
+      .setZone(timezone)
+      .startOf('month')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('day')
+      .plus({ millisecond: 1 })
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === 'lastMonth') {
+    const month = DateTime.now()
+      .minus({ month: 1 })
+      .setZone(timezone)
+      .startOf('month');
+
+    const startDate = month.toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = month
+      .endOf('month')
+      .plus({ millisecond: 1 })
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === 'yearToDate') {
+    const startDate = DateTime.now()
+      .setZone(timezone)
+      .startOf('year')
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = DateTime.now()
+      .setZone(timezone)
+      .endOf('day')
+      .plus({ millisecond: 1 })
+      .toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  if (range === 'lastYear') {
+    const year = DateTime.now().minus({ year: 1 }).setZone(timezone);
+    const startDate = year.startOf('year').toFormat('yyyy-MM-dd HH:mm:ss');
+    const endDate = year.endOf('year').toFormat('yyyy-MM-dd HH:mm:ss');
+
+    return {
+      startDate: startDate,
+      endDate: endDate,
+    };
+  }
+
+  // range === '30d'
+  const startDate = DateTime.now()
+    .minus({ day: 30 })
+    .setZone(timezone)
+    .startOf('day')
+    .toFormat('yyyy-MM-dd HH:mm:ss');
+  const endDate = DateTime.now()
+    .setZone(timezone)
+    .endOf('day')
+    .plus({ millisecond: 1 })
+    .toFormat('yyyy-MM-dd HH:mm:ss');
+
+  return {
+    startDate: startDate,
+    endDate: endDate,
+  };
+}
+
+export function getChartPrevStartEndDate({
+  startDate,
+  endDate,
+}: {
+  startDate: string;
+  endDate: string;
+}) {
+  let diff = DateTime.fromFormat(endDate, 'yyyy-MM-dd HH:mm:ss').diff(
+    DateTime.fromFormat(startDate, 'yyyy-MM-dd HH:mm:ss'),
+  );
+
+  // this will make sure our start and end date's are correct
+  // otherwise if a day ends with 23:59:59.999 and starts with 00:00:00.000
+  // the diff will be 23:59:59.999 and that will make the start date wrong
+  // so we add 1 millisecond to the diff
+  if ((diff.milliseconds / 1000) % 2 !== 0) {
+    diff = diff.plus({ millisecond: 1 });
+  }
+
+  return {
+    startDate: DateTime.fromFormat(startDate, 'yyyy-MM-dd HH:mm:ss')
+      .minus({ millisecond: diff.milliseconds })
+      .toFormat('yyyy-MM-dd HH:mm:ss'),
+    endDate: DateTime.fromFormat(endDate, 'yyyy-MM-dd HH:mm:ss')
+      .minus({ millisecond: diff.milliseconds })
+      .toFormat('yyyy-MM-dd HH:mm:ss'),
+  };
+}