Calendar Time Slot Picker

import Cmp from "@/registry/origin-ui/comp-505";

export default function Demo() {
  return <Cmp />;
}

"use client";

import { format } from "date-fns";
import { useState } from "react";

import { Button } from "@/components/ui/button";
import { Calendar } from "@/components/ui/calendar";
import { ScrollArea } from "@/components/ui/scroll-area";

export default function Component() {
  const today = new Date();
  const [date, setDate] = useState<Date>(today);
  const [time, setTime] = useState<string | null>(null);

  // Mock time slots data
  const timeSlots = [
    { available: false, time: "09:00" },
    { available: false, time: "09:30" },
    { available: true, time: "10:00" },
    { available: true, time: "10:30" },
    { available: true, time: "11:00" },
    { available: true, time: "11:30" },
    { available: false, time: "12:00" },
    { available: true, time: "12:30" },
    { available: true, time: "13:00" },
    { available: true, time: "13:30" },
    { available: true, time: "14:00" },
    { available: false, time: "14:30" },
    { available: false, time: "15:00" },
    { available: true, time: "15:30" },
    { available: true, time: "16:00" },
    { available: true, time: "16:30" },
    { available: true, time: "17:00" },
    { available: true, time: "17:30" },
  ];

  return (
    <div>
      <div className="rounded-md border">
        <div className="flex max-sm:flex-col">
          <Calendar
            className="p-2 sm:pe-5"
            disabled={[
              { before: today }, // Dates before today
            ]}
            mode="single"
            onSelect={(newDate) => {
              if (newDate) {
                setDate(newDate);
                setTime(null);
              }
            }}
            selected={date}
          />
          <div className="relative w-full max-sm:h-48 sm:w-40">
            <div className="absolute inset-0 py-4 max-sm:border-t">
              <ScrollArea className="h-full sm:border-s">
                <div className="space-y-3">
                  <div className="flex h-5 shrink-0 items-center px-5">
                    <p className="font-medium text-sm">
                      {format(date, "EEEE, d")}
                    </p>
                  </div>
                  <div className="grid gap-1.5 px-5 max-sm:grid-cols-2">
                    {timeSlots.map(({ time: timeSlot, available }) => (
                      <Button
                        className="w-full"
                        disabled={!available}
                        key={timeSlot}
                        onClick={() => setTime(timeSlot)}
                        size="sm"
                        variant={time === timeSlot ? "default" : "outline"}
                      >
                        {timeSlot}
                      </Button>
                    ))}
                  </div>
                </div>
              </ScrollArea>
            </div>
          </div>
        </div>
      </div>
      <p
        aria-live="polite"
        className="mt-4 text-center text-muted-foreground text-xs"
        role="region"
      >
        Appointment picker -{" "}
        <a
          className="underline hover:text-foreground"
          href="https://daypicker.dev/"
          rel="noreferrer noopener nofollow"
          target="_blank"
        >
          React DayPicker
        </a>
      </p>
    </div>
  );
}