allow form to be used for both editing and creating

client/src/components/composite/Admin/AdminEventView/AdminEventForm/AdminEventForm.story.tsx

@@ -1,5 +1,6 @@
 import type { Meta, StoryObj } from "@storybook/react"
 import AdminEventForm from "./AdminEventForm"
+import { Timestamp } from "firebase/firestore"
 
 const meta: Meta<typeof AdminEventForm> = {
   component: AdminEventForm
@@ -9,3 +10,21 @@ export default meta
 type Story = StoryObj<typeof meta>
 
 export const DefaultAdminEventForm: Story = {}
+
+export const DefaultAdminEventFormEditView: Story = {
+  args: {
+    isEditMode: true,
+    defaultData: {
+      title: "Goon Cave",
+      description:
+        "Lorem, ipsum dolor sit amet consectetur adipisicing elit. Eaque officiis similique repellat accusantium eos dignissimos suscipit voluptatibus? Quia nobis repellendus quam, aliquid, veritatis eos fuga eligendi harum dolorum vero facere!",
+      location: "straight zhao's basement",
+      sign_up_start_date: Timestamp.fromDate(new Date(2024, 10, 4)),
+      sign_up_end_date: Timestamp.fromDate(new Date(2024, 11, 5)),
+      physical_start_date: Timestamp.fromDate(new Date(2024, 10, 3)),
+      physical_end_date: Timestamp.fromDate(new Date(2024, 11, 3)),
+      google_forms_link:
+        "https://www.reddit.com/r/VrGoonCave/comments/18gnrk8/welcome_to_vrgooncave/"
+    }
+  }
+}

client/src/components/composite/Admin/AdminEventView/AdminEventForm/AdminEventForm.tsx

@@ -1,9 +1,14 @@
+import {
+  EventMessages,
+  EventRenderingUtils
+} from "@/components/generic/Event/EventUtils"
 import Button from "@/components/generic/FigmaButtons/FigmaButton"
 import TextInput from "@/components/generic/TextInputComponent/TextInput"
+import { DateUtils } from "@/components/utils/DateUtils"
 import { CreateEventBody } from "@/models/Events"
 import { Timestamp } from "firebase/firestore"
 import Image from "next/image"
-import { FormEvent, useState } from "react"
+import { FormEvent, useMemo, useState } from "react"
 
 interface IAdminEventForm {
   /**
@@ -23,6 +28,18 @@ interface IAdminEventForm {
    * To be called after user submits the new data for the event
    */
   handlePostEvent: (data: CreateEventBody) => void
+  /**
+   * If the panel should suggest that the event is being edited, instead of created
+   *
+   * Does the create mode if set to `false`
+   */
+  isEditMode?: boolean
+  /**
+   * What to pre-fill the form with - _generally_ only to be used
+   * if {@link isEditMode} is set to true (which would have the previous
+   * values of the event.)
+   */
+  defaultData?: CreateEventBody["data"]
 }
 
 export const AdminEventFormKeys = {
@@ -42,12 +59,20 @@ const Divider = () => <span className="bg-gray-3 my-3 h-[1px] w-full" />
 
 const AdminEventForm = ({
   handlePostEvent,
-  generateImageLink
+  generateImageLink,
+  isEditMode = false,
+  defaultData
 }: IAdminEventForm) => {
   const [isSubmitting, setIsSubmitting] = useState<boolean>(false)
 
   const [uploadedImage, setUploadedImage] = useState<File | undefined>()
 
+  const formTitle = useMemo(
+    () =>
+      isEditMode ? `Edit Event ${defaultData?.title || ""}` : "Create Event",
+    [isEditMode, defaultData]
+  )
+
   const handleSubmit = async (e: FormEvent<HTMLFormElement>) => {
     e.preventDefault()
     const data = new FormData(e.currentTarget)
@@ -86,7 +111,7 @@ const AdminEventForm = ({
 
       if (
         confirm(
-          `Are you sure you want to create the new event with title ${body.title}?`
+          EventMessages.adminEventPostConfirmation(!!isEditMode, body.title)
         )
       ) {
         handlePostEvent({
@@ -102,7 +127,7 @@ const AdminEventForm = ({
   }
   return (
     <div className="relative my-4 flex w-full flex-col items-center rounded-md bg-white p-2">
-      <h2 className="text-dark-blue-100">Create Event</h2>
+      <h2 className="text-dark-blue-100">{formTitle}</h2>
       <form
         onSubmit={handleSubmit}
         className="flex w-full max-w-[800px] flex-col gap-2"
@@ -111,11 +136,13 @@ const AdminEventForm = ({
           name={AdminEventFormKeys.TITLE}
           type="text"
           label="Title"
+          defaultValue={defaultData?.title}
           data-testid={AdminEventFormKeys.TITLE}
           required
         />
         <label htmlFor={AdminEventFormKeys.DESCRIPTION}>Description</label>
         <textarea
+          defaultValue={defaultData?.description}
           name={AdminEventFormKeys.DESCRIPTION}
           data-testid={AdminEventFormKeys.DESCRIPTION}
         />
@@ -146,6 +173,7 @@ const AdminEventForm = ({
           name={AdminEventFormKeys.LOCATION}
           type="text"
           label="Location"
+          defaultValue={defaultData?.location}
           data-testid={AdminEventFormKeys.LOCATION}
           required
         />
@@ -156,12 +184,30 @@ const AdminEventForm = ({
             name={AdminEventFormKeys.SIGN_UP_START_DATE}
             data-testid={AdminEventFormKeys.SIGN_UP_START_DATE}
             type="datetime-local"
+            value={
+              defaultData &&
+              EventRenderingUtils.dateTimeLocalPlaceHolder(
+                new Date(
+                  DateUtils.timestampMilliseconds(
+                    defaultData?.sign_up_start_date
+                  )
+                )
+              )
+            }
             label="Sign Up Start Date"
             required
           />
           <TextInput
             name={AdminEventFormKeys.SIGN_UP_END_DATE}
             data-testid={AdminEventFormKeys.SIGN_UP_END_DATE}
+            value={
+              defaultData?.sign_up_end_date &&
+              EventRenderingUtils.dateTimeLocalPlaceHolder(
+                new Date(
+                  DateUtils.timestampMilliseconds(defaultData?.sign_up_end_date)
+                )
+              )
+            }
             type="datetime-local"
             label="Sign Up End Date (If exists)"
           />
@@ -173,13 +219,33 @@ const AdminEventForm = ({
           <TextInput
             name={AdminEventFormKeys.PHYSICAL_START_DATE}
             data-testid={AdminEventFormKeys.PHYSICAL_START_DATE}
+            value={
+              defaultData?.physical_start_date &&
+              EventRenderingUtils.dateTimeLocalPlaceHolder(
+                new Date(
+                  DateUtils.timestampMilliseconds(
+                    defaultData?.physical_start_date
+                  )
+                )
+              )
+            }
             type="datetime-local"
             label="Start Date of Event"
             required
           />
           <TextInput
             name={AdminEventFormKeys.PHYSICAL_END_DATE}
             data-testid={AdminEventFormKeys.PHYSICAL_END_DATE}
+            value={
+              defaultData?.physical_end_date &&
+              EventRenderingUtils.dateTimeLocalPlaceHolder(
+                new Date(
+                  DateUtils.timestampMilliseconds(
+                    defaultData?.physical_end_date
+                  )
+                )
+              )
+            }
             type="datetime-local"
             label="End Date of Event"
           />
@@ -188,6 +254,7 @@ const AdminEventForm = ({
         <TextInput
           name={AdminEventFormKeys.GOOGLE_FORMS_LINK}
           data-testid={AdminEventFormKeys.GOOGLE_FORMS_LINK}
+          defaultValue={defaultData?.google_forms_link}
           type="url"
           label="Google Forms Link"
         />
@@ -196,7 +263,7 @@ const AdminEventForm = ({
           type="submit"
           data-testid="post-event-button"
         >
-          Add Event
+          {isEditMode ? "Update Event" : "Add Event"}
         </Button>
       </form>
     </div>

client/src/components/generic/Event/EventPreview/EventPreview.tsx

@@ -84,7 +84,7 @@ const EventsCardPreview = ({
     <div
       className={`border-gray-3 navbar-shadow flex w-full flex-col items-center
           	    justify-center gap-2 rounded-md border bg-white p-4 sm:flex-row
-                sm:px-10 sm:py-${variant === "admin" ? 10 : 12} ${isPastEvent && "brightness-50"}`}
+                sm:px-10 ${variant === "admin" ? "sm:py-10" : "sm:py-12"} ${isPastEvent && "brightness-50"}`}
     >
       <div className="border-gray-3 h-fit max-h-[150px] w-[200px] overflow-hidden border">
         <Image

client/src/components/generic/Event/EventUtils.test.ts

@@ -0,0 +1,33 @@
+import { EventRenderingUtils } from "./EventUtils"
+
+describe("dateTimeLocalPlaceHolder", () => {
+  it("should return a formatted string in ISO 8601 format without milliseconds", () => {
+    const date = new Date("2024-11-01T23:34:15.123Z")
+    const result = EventRenderingUtils.dateTimeLocalPlaceHolder(date)
+    expect(result).toBe("2024-11-01T23:34:15")
+  })
+
+  it("should handle dates without milliseconds correctly", () => {
+    const date = new Date("2024-11-01T23:34:15Z")
+    const result = EventRenderingUtils.dateTimeLocalPlaceHolder(date)
+    expect(result).toBe("2024-11-01T23:34:15")
+  })
+
+  it("should handle different time zones correctly", () => {
+    const date = new Date("2024-11-01T23:34:15.123+09:00")
+    const result = EventRenderingUtils.dateTimeLocalPlaceHolder(date)
+    expect(result).toBe("2024-11-01T14:34:15")
+  })
+
+  it("should handle leap years correctly", () => {
+    const date = new Date("2024-02-29T23:34:15.123Z")
+    const result = EventRenderingUtils.dateTimeLocalPlaceHolder(date)
+    expect(result).toBe("2024-02-29T23:34:15")
+  })
+
+  it("should handle dates before 1970 correctly", () => {
+    const date = new Date("1969-12-31T23:34:15.123Z")
+    const result = EventRenderingUtils.dateTimeLocalPlaceHolder(date)
+    expect(result).toBe("1969-12-31T23:34:15")
+  })
+})

client/src/components/generic/Event/EventUtils.ts

@@ -13,6 +13,20 @@ export const IMAGE_PLACEHOLDER_SRC =
  * Static methods to format strings related to events
  */
 export const EventMessages = {
+  /**
+   * Message to be displayed for confirming event creation or editing
+   *
+   * @param isEditing boolean indicating if the event is being edited
+   * @param title the title of the event
+   * @returns a formatted, user-readable string asking for confirmation
+   */
+  adminEventPostConfirmation: (isEditing: boolean, title: string) => {
+    if (isEditing) {
+      return `Are you sure you want to edit the event ${title}?`
+    } else {
+      return `Are you sure you want to create the new event with title ${title}?`
+    }
+  },
   /**
    * Message to be displayed if sign ups have opened in relation to the sign up date
    *
@@ -72,6 +86,17 @@ export const EventDateComparisons = {
 } as const
 
 export const EventRenderingUtils = {
+  /**
+   * Generates a placeholder string for a local date and time input field
+   *
+   * @param date the date object to be formatted
+   * @returns a formatted string in ISO 8601 format without milliseconds
+   */
+  dateTimeLocalPlaceHolder: (date: Date) => {
+    const isoString = date.toISOString()
+    const placeholderString = isoString.substring(0, isoString.lastIndexOf("."))
+    return placeholderString
+  },
   /**
    * Utility function to convert a raw {@link Event} into {@link IEventsCardPreview}
    *