BP Calendar component added

src/app/bp/history/page.tsx

@@ -1,3 +1,10 @@
+import Calendar from '@/components/bp/calendar';
+
 export default function History() {
-  return <div>BP history</div>;
+  return (
+    <div>
+      <div>BP history</div>
+      <Calendar />
+    </div>
+  );
 }

src/components/bp/calendar.tsx

@@ -0,0 +1,160 @@
+'use client';
+
+import {
+  addDays,
+  addMonths,
+  endOfMonth,
+  getDate,
+  getDay,
+  getMonth,
+  getYear,
+  isBefore,
+  isSameMonth,
+  startOfMonth,
+  subMonths,
+} from 'date-fns';
+import { memo, useEffect, useMemo, useState } from 'react';
+import Button from '../button';
+
+export default function Calendar() {
+  const today = new Date();
+
+  const [start, setStart] = useState(() => startOfMonth(today));
+  const [end, setEnd] = useState(() => endOfMonth(today));
+  const [daysArr, setDaysArr] = useState<Date[][]>([]);
+
+  useEffect(() => {
+    setEnd(endOfMonth(start));
+  }, [start]);
+
+  useEffect(() => {
+    if (isBefore(end, start)) {
+      return;
+    }
+
+    setDaysArr(() => {
+      const arr: Date[][] = [];
+      let currentDate = new Date(start);
+
+      while (isSameMonth(currentDate, end)) {
+        arr.push([]);
+
+        for (let i = 0; i < 7; i += 1) {
+          if (getDay(currentDate) === i) {
+            arr[arr.length - 1][i] = new Date(currentDate);
+            currentDate = addDays(currentDate, 1);
+          }
+
+          if (!isSameMonth(currentDate, end)) {
+            break;
+          }
+        }
+      }
+
+      return arr;
+    });
+  }, [end, start]);
+
+  const getMonthString = useMemo(
+    () => (date: Date) => {
+      switch (getMonth(date)) {
+        case 0:
+          return 'Jan.';
+        case 1:
+          return 'Feb.';
+        case 2:
+          return 'Mar.';
+        case 3:
+          return 'Apr.';
+        case 4:
+          return 'May';
+        case 5:
+          return 'Jun.';
+        case 6:
+          return 'Jul.';
+        case 7:
+          return 'Aug.';
+        case 8:
+          return 'Sep.';
+        case 9:
+          return 'Oct.';
+        case 10:
+          return 'Nov.';
+        case 11:
+          return 'Dec.';
+      }
+    },
+    [],
+  );
+
+  return (
+    <>
+      <div className="flex items-center space-x-1 px-3 mb-3">
+        <div>
+          <Button size="xs" throttle={300} onClick={() => setStart(subMonths(start, 1))}>
+            {'<'}
+          </Button>
+        </div>
+        <div>
+          <Button size="xs" throttle={300} onClick={() => setStart(addMonths(start, 1))}>
+            {'>'}
+          </Button>
+        </div>
+        <div className="ps-3">
+          {getMonthString(start)} {getYear(start)}
+        </div>
+      </div>
+      <div className="flex flex-col border-b border-s border-gray-600">
+        {daysArr.map((week, i) => (
+          <div key={i} className="grid grid-cols-7">
+            {[0, 1, 2, 3, 4, 5, 6].map((i) => (
+              <Cell key={week[i]?.getTime() ?? i} date={week[i]} />
+            ))}
+          </div>
+        ))}
+      </div>
+    </>
+  );
+}
+
+const Cell = memo(({ date }: { date: Date }) => {
+  const getDayString = useMemo(
+    () => (date: Date) => {
+      switch (getDay(date)) {
+        case 0:
+          return 'SUN';
+        case 1:
+          return 'MON';
+        case 2:
+          return 'TUE';
+        case 3:
+          return 'WED';
+        case 4:
+          return 'THU';
+        case 5:
+          return 'FRI';
+        case 6:
+          return 'SAT';
+        default:
+          return '';
+      }
+    },
+    [],
+  );
+
+  return (
+    <div className={`border-t border-e border-gray-600 ${date == null && 'bg-gray-800'}`}>
+      {date ? (
+        <div>
+          <div className="text-center text-sm">
+            <div className="text-gray-500">{getDayString(date)}</div>
+            <div className="text-gray-400">{getDate(date)}</div>
+          </div>
+        </div>
+      ) : (
+        <div></div>
+      )}
+    </div>
+  );
+});
+Cell.displayName = 'Cell';

src/components/button.tsx

@@ -5,12 +5,14 @@ const Button = ({
   color = 'zinc',
   size = 'base',
   disabled = false,
+  throttle = 1000,
   onClick,
 }: {
   children: ReactNode;
   color?: 'zinc' | 'indigo';
   size?: 'xs' | 'sm' | 'base' | 'lg';
   disabled?: boolean;
+  throttle?: number;
   onClick: () => void;
 }) => {
   const throttleRef = useRef<NodeJS.Timeout | null>(null);
@@ -22,7 +24,7 @@ const Button = ({
 
     throttleRef.current = setTimeout(() => {
       throttleRef.current = null;
-    }, 1000);
+    }, throttle);
 
     onClick();
   };