feat: calendar component

adding the calendar component using full calendar

app/availability/page.tsx

@@ -0,0 +1,106 @@
+'use client';
+
+import React, { useState } from 'react';
+import dayGridPlugin from '@fullcalendar/daygrid';
+import interactionPlugin from '@fullcalendar/interaction';
+import FullCalendar from '@fullcalendar/react';
+import { Container } from './styles';
+
+type Info = {
+  start: Date;
+  end: Date;
+};
+
+type DateObj = {
+  date: Date;
+};
+
+export default function Page() {
+  const [selectedDates, setSelectedDates] = useState<string[]>([]);
+  const [curMonth, setMonth] = useState<number>();
+
+  const handleSelect = (info: Info) => {
+    const { start, end } = info; // Get start and end of the selected range
+    while (start < end) {
+      if (!checkValidSelectDate(start)) {
+        const dateStr = start.toISOString();
+        setSelectedDates(prevDates =>
+          prevDates.includes(dateStr)
+            ? prevDates.filter(date => date !== dateStr)
+            : [...prevDates, dateStr],
+        );
+      }
+      start.setDate(start.getDate() + 1); // Move to the next day
+    }
+  };
+
+  const updateMonth = (info: Info) => {
+    const middate = new Date((info.start.getTime() + info.end.getTime()) / 2);
+    setMonth(middate.getMonth());
+  };
+
+  const dayCellClassNames = (date: DateObj) => {
+    const dateObj = date.date;
+    const dateStr = dateObj.toISOString();
+    const month = dateObj.getMonth();
+    // Default classes
+    const classNames = [];
+
+    // Highlight selected dates
+    if (selectedDates.includes(dateStr)) {
+      classNames.push('selected-date');
+      if (curMonth != month) {
+        classNames.push('non-cur-selected');
+      } else {
+        classNames.push('cur-selected');
+      }
+    }
+
+    if (checkValidSelectDate(dateObj)) {
+      // 0 = Sunday, 6 = Saturday
+      classNames.push('unselectable');
+    }
+
+    // Return the dynamic class names
+    return classNames;
+  };
+
+  function checkValidSelectDate(date: Date): boolean {
+    const day = date.getDay();
+    const month = date.getMonth();
+    const today = new Date();
+
+    const sameDay =
+      date.getDate() == today.getDate() && date.getMonth() == today.getMonth();
+    if (
+      day === 0 ||
+      day === 6 ||
+      (!sameDay && date < today) ||
+      (curMonth != null && curMonth != month)
+    ) {
+      // 0 = Sunday, 6 = Saturday
+      return true;
+    }
+    return false;
+  }
+
+  return (
+    <Container>
+      <FullCalendar
+        plugins={[interactionPlugin, dayGridPlugin]}
+        initialView="dayGridMonth"
+        headerToolbar={{
+          left: 'title',
+          center: '',
+          right: 'prev next',
+        }}
+        dayCellContent={arg => arg.date.getDate()}
+        selectable={true}
+        dayCellClassNames={dayCellClassNames}
+        selectOverlap={false}
+        select={handleSelect}
+        datesSet={updateMonth}
+      />
+    </Container>
+  );
+}

app/availability/styles.ts

@@ -0,0 +1,93 @@
+import styled from 'styled-components';
+import COLORS from '../../styles/colors';
+
+export const Container = styled.div`
+  width: 500px;
+  margin: 100px;
+  cursor: default;
+  .fc-prev-button,
+  .fc-next-button {
+    background: none;
+    border: none;
+    color: black;
+    box-shadow: none;
+  }
+
+  .fc-prev-button:hover,
+  .fc-next-button:hover {
+    background-color: lightgray;
+    cursor: pointer;
+  }
+
+  .fc-highlight {
+    background-color: transparent;
+  }
+
+  .selected-date {
+    position: relative;
+  }
+
+  .cur-selected::after {
+    background-color: ${COLORS.bread5} !important;
+  }
+
+  .non-cur-selected::after {
+    background-color: ${COLORS.bread3} !important;
+  }
+
+  .selected-date::after {   
+    content: '';
+    position: absolute;
+    width: 45px;
+    height: 45px;
+    bottom: 5.5px;
+    transform: translateX(11px);
+    border-radius: 50%;
+    -moz-border-radius: 50%;
+    -webkit-border-radius: 50%;
+    z-index: -1;
+  }
+
+  .unselectable {
+    color: ${COLORS.gray8}} !important;
+  }
+
+  .fc-day-past div {
+    opacity: 1 !important;
+  }
+
+  .fc-day-future div {
+    opacity: 1 !important;
+  }
+
+
+  .fc-day-today {
+    background-color: transparent !important;
+  }
+
+  .fc-day-today::after {
+    content: '';
+    position: absolute;
+    transform: translateX(31px);
+    bottom: 125px;
+    width: 4px; /* Diameter of the dot */
+    height: 4px; /* Diameter of the dot */
+    background-color: ${COLORS.rose11}; /* Color of the dot */
+    border-radius: 50%; /* Makes the element a circle */
+  }
+
+  .fc-daygrid-day-frame {
+    display: flex;
+    justify-content: center;
+  }
+
+  .fc-daygrid-day-top {
+    align-items: center;
+  }
+
+  .fc td,
+  .fc table,
+  .fc th {
+    border-style: none !important;
+  }
+`;

package.json

@@ -14,9 +14,14 @@
     "pre-commit": "(pnpm run tsc || true) && (pnpm run lint || true) && pnpm run prettier"
   },
   "dependencies": {
+    "@fullcalendar/core": "^6.1.15",
+    "@fullcalendar/daygrid": "^6.1.15",
+    "@fullcalendar/interaction": "^6.1.15",
+    "@fullcalendar/react": "^6.1.15",
     "@next/font": "^14.2.15",
     "@supabase/supabase-js": "^2.45.4",
     "dotenv": "^16.4.5",
+    "fullcalendar": "^6.1.15",
     "next": "^14.2.10",
     "react": "^18",
     "react-dom": "^18",