chore: make all event dates fetch from schedule (#597)

layout/Speakers/components/Schedule/index.jsx

@@ -3,6 +3,8 @@ import { useState, useEffect } from "react";
 import Day from "./Day";
 import Table from "./Table";
 
+import scheduleData from "/data/schedule.json";
+
 function isAfter(date1, date2) {
   // equivalent to date1 > date2
   const arr1 = date1.split("/");
@@ -61,8 +63,10 @@ function addDate(date, days) {
 }
 
 export default function Schedule(props) {
-  const min_date = "2023/2/14";
-  const max_date = "2023/2/17";
+  /* Fetch first and last day of the event from schedule data */
+  const eventDates = scheduleData.map((day) => day.date).sort();
+  const min_date = eventDates[0];
+  const max_date = eventDates[eventDates.length - 1];
 
   //calculate default date
   const _today = new Date();

layout/shared/Leaderboard/Leaderboard.tsx

@@ -11,6 +11,9 @@ import ErrorMessage from "@components/ErrorMessage";
 
 import { getLeaderboard } from "@lib/api";
 
+import scheduleData from "@data/schedule.json";
+import dayjs from "dayjs";
+
 function leapYear(year) {
   return (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
 }
@@ -72,8 +75,12 @@ function addDate(date, days) {
 }
 
 function Leaderboard() {
-  const min_date = "2023/02/14";
-  const max_date = "2023/02/17";
+  /* Fetch first and last day of the event from schedule data */
+  const eventDates = scheduleData.map((day) => day.date).sort();
+  const min_date = dayjs(eventDates[0]).format("YYYY/MM/DD");
+  const max_date = dayjs(eventDates[eventDates.length - 1]).format(
+    "YYYY/MM/DD"
+  );
 
   const _today = new Date().toISOString().split("T")[0];
   const today = _today.replace(/-/g, "/");