fix: update day picker to handle utc display

frontend/src/components/v2/DatePicker/DatePicker.tsx

@@ -1,11 +1,13 @@
 import { ChangeEventHandler, useState } from "react";
-import { DayPicker, DayPickerProps, getDefaultClassNames, UI } from "react-day-picker";
+import { DayPicker, DayPickerProps, getDefaultClassNames, TZDate, UI } from "react-day-picker";
 import { faCalendar } from "@fortawesome/free-solid-svg-icons";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { PopoverContentProps, PopoverProps } from "@radix-ui/react-popover";
 import { format, setHours, setMinutes } from "date-fns";
 import { twMerge } from "tailwind-merge";
 
+import { formatDateTime, Timezone } from "@app/helpers/datetime";
+
 import { Button } from "../Button";
 import { Input } from "../Input";
 import { Popover, PopoverContent, PopoverTrigger } from "../Popoverv2";
@@ -19,6 +21,31 @@ export type DatePickerProps = Omit<DayPickerProps, "selected"> & {
   popUpContentProps: PopoverContentProps;
   dateFormat?: "PPP" | "PP" | "P"; // extend as needed
   buttonClassName?: string;
+  timezone?: Timezone;
+};
+
+const localTimeToUTC = (timeString: string) => {
+  const today = new Date();
+  const [hours, minutes] = timeString.split(":").map(Number);
+
+  today.setHours(hours, minutes, 0, 0);
+
+  const utcHours = today.getUTCHours().toString().padStart(2, "0");
+  const utcMinutes = today.getUTCMinutes().toString().padStart(2, "0");
+
+  return `${utcHours}:${utcMinutes}`;
+};
+
+const utcTimeToLocal = (utcTimeString: string) => {
+  const today = new Date();
+  const [hours, minutes] = utcTimeString.split(":").map(Number);
+
+  today.setUTCHours(hours, minutes, 0, 0);
+
+  const localHours = today.getHours().toString().padStart(2, "0");
+  const localMinutes = today.getMinutes().toString().padStart(2, "0");
+
+  return `${localHours}:${localMinutes}`;
 };
 
 // Doc: https://react-day-picker.js.org/
@@ -29,12 +56,15 @@ export const DatePicker = ({
   popUpContentProps,
   dateFormat = "PPP",
   buttonClassName,
+  timezone,
   ...props
 }: DatePickerProps) => {
   const [timeValue, setTimeValue] = useState<string>(value ? format(value, "HH:mm") : "00:00");
+  const displayUtc = timezone === Timezone.UTC;
 
   const handleTimeChange: ChangeEventHandler<HTMLInputElement> = (e) => {
-    const time = e.target.value;
+    const time = displayUtc ? utcTimeToLocal(e.target.value) : e.target.value;
+
     if (time) {
       setTimeValue(time);
       if (value) {
@@ -64,7 +94,9 @@ export const DatePicker = ({
           variant="outline_bg"
           leftIcon={<FontAwesomeIcon icon={faCalendar} />}
         >
-          {value ? format(value, dateFormat) : "Pick a date and time"}
+          {value
+            ? formatDateTime({ timestamp: value, timezone, dateFormat })
+            : "Pick a date and time"}
         </Button>
       </PopoverTrigger>
       <PopoverContent
@@ -78,9 +110,10 @@ export const DatePicker = ({
           <DayPicker
             {...props}
             mode="single"
-            selected={value}
-            onSelect={handleDaySelect}
+            selected={value ? new TZDate(value, displayUtc ? "UTC" : undefined) : undefined}
+            onSelect={(date) => handleDaySelect(date ? new TZDate(date, undefined) : undefined)}
             className="font-inter text-mineshaft-200"
+            timeZone={displayUtc ? "UTC" : undefined}
             classNames={{
               today: "text-primary border-primary",
               selected: " text-mineshaft-100 bg-mineshaft-500",
@@ -94,7 +127,7 @@ export const DatePicker = ({
         <div className="mx-4 my-4">
           <Input
             type="time"
-            value={timeValue}
+            value={displayUtc ? localTimeToUTC(timeValue) : timeValue}
             onChange={handleTimeChange}
             className="bg-mineshaft-700 text-white [color-scheme:dark]"
           />

frontend/src/helpers/datetime.ts

@@ -0,0 +1,24 @@
+import { format } from "date-fns";
+
+export enum Timezone {
+  Local = "local",
+  UTC = "UTC"
+}
+
+export const formatDateTime = ({
+  timezone,
+  timestamp,
+  dateFormat = "MMM do yyyy, hh:mm a"
+}: {
+  timestamp: string | Date;
+  timezone?: Timezone;
+  dateFormat?: string;
+}) => {
+  const date = new Date(timestamp);
+
+  if (timezone === Timezone.UTC) {
+    const utcDate = new Date(date.getTime() + date.getTimezoneOffset() * 60000);
+    return `${format(utcDate, dateFormat)} UTC`;
+  }
+  return format(date, dateFormat);
+};

frontend/src/pages/organization/AuditLogsPage/components/LogsDateFilter.tsx

@@ -18,12 +18,12 @@ import {
   Select,
   SelectItem
 } from "@app/components/v2";
+import { Timezone } from "@app/helpers/datetime";
 
 import {
   auditLogDateFilterFormSchema,
   AuditLogDateFilterType,
-  TAuditLogDateFilterFormData,
-  Timezone
+  TAuditLogDateFilterFormData
 } from "./types";
 
 type Props = {
@@ -233,6 +233,7 @@ export const LogsDateFilter = ({ setFilter, filter, timezone, setTimezone }: Pro
                         <DatePicker
                           value={field.value || undefined}
                           onChange={onChange}
+                          timezone={timezone}
                           dateFormat="P"
                           buttonClassName="w-44 h-8 font-normal"
                           popUpProps={{
@@ -266,6 +267,7 @@ export const LogsDateFilter = ({ setFilter, filter, timezone, setTimezone }: Pro
                           onChange={onChange}
                           dateFormat="P"
                           buttonClassName="w-44 h-8 font-normal"
+                          timezone={timezone}
                           popUpProps={{
                             open: isEndDatePickerOpen,
                             onOpenChange: setIsEndDatePickerOpen

frontend/src/pages/organization/AuditLogsPage/components/LogsSection.tsx

@@ -5,6 +5,7 @@ import ms from "ms";
 
 import { UpgradePlanModal } from "@app/components/license/UpgradePlanModal";
 import { OrgPermissionActions, OrgPermissionSubjects, useSubscription } from "@app/context";
+import { Timezone } from "@app/helpers/datetime";
 import { withPermission } from "@app/hoc";
 import { usePopUp } from "@app/hooks/usePopUp";
 
@@ -15,8 +16,7 @@ import {
   AuditLogDateFilterType,
   Presets,
   TAuditLogDateFilterFormData,
-  TAuditLogFilterFormData,
-  Timezone
+  TAuditLogFilterFormData
 } from "./types";
 
 type Props = {

frontend/src/pages/organization/AuditLogsPage/components/LogsTableRow.tsx

@@ -1,14 +1,12 @@
 import { faCaretDown, faCaretRight } from "@fortawesome/free-solid-svg-icons";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
-import { format } from "date-fns";
 
 import { Td, Tr } from "@app/components/v2";
+import { formatDateTime, Timezone } from "@app/helpers/datetime";
 import { useToggle } from "@app/hooks";
 import { ActorType } from "@app/hooks/api/auditLogs/enums";
 import { AuditLog } from "@app/hooks/api/auditLogs/types";
 
-import { Timezone } from "./types";
-
 type Props = {
   auditLog: AuditLog;
   rowNumber: number;
@@ -30,16 +28,6 @@ const Tag = ({ label, value }: TagProps) => {
   );
 };
 
-const formatDateTime = (timestamp: string | Date, timezone: Timezone) => {
-  const date = new Date(timestamp);
-
-  if (timezone === Timezone.UTC) {
-    const utcDate = new Date(date.getTime() + date.getTimezoneOffset() * 60000);
-    return `${format(utcDate, "MMM do yyyy, hh:mm a")} UTC`;
-  }
-  return format(date, "MMM do yyyy, hh:mm a");
-};
-
 export const LogsTableRow = ({ auditLog, rowNumber, timezone }: Props) => {
   const [isOpen, setIsOpen] = useToggle();
 
@@ -59,7 +47,7 @@ export const LogsTableRow = ({ auditLog, rowNumber, timezone }: Props) => {
           <FontAwesomeIcon icon={isOpen ? faCaretDown : faCaretRight} />
           {rowNumber}
         </Td>
-        <Td className="align-top">{formatDateTime(auditLog.createdAt, timezone)}</Td>
+        <Td className="align-top">{formatDateTime({ timestamp: auditLog.createdAt, timezone })}</Td>
         <Td>
           <div className="flex flex-wrap gap-4 text-sm">
             <Tag label="event" value={auditLog.event.type} />

frontend/src/pages/organization/AuditLogsPage/components/types.tsx

@@ -8,11 +8,6 @@ export enum AuditLogDateFilterType {
   Absolute = "absolute"
 }
 
-export enum Timezone {
-  Local = "local",
-  UTC = "UTC"
-}
-
 export const auditLogFilterFormSchema = z.object({
   eventMetadata: z.object({}).optional(),
   project: z