'use client';

import * as React from 'react';
import { Calendar as CalendarIcon } from 'lucide-react';
import { format } from 'date-fns';
import { cn } from '@/lib/utils';
import { Button } from '@/components/ui/button';
import DatePickerLib from 'react-datepicker';
import 'react-datepicker/dist/react-datepicker.css';

interface DatePickerProps {
  date: Date | undefined;
  setDate: (date: Date | undefined) => void;
  label?: string;
}

export function DatePicker({ date, setDate, label }: DatePickerProps) {
  const [isOpen, setIsOpen] = React.useState(false);
  const wrapperRef = React.useRef<HTMLDivElement>(null);

  // Close calendar when clicking outside
  React.useEffect(() => {
    const handleClickOutside = (event: MouseEvent) => {
      if (wrapperRef.current && !wrapperRef.current.contains(event.target as Node)) {
        setIsOpen(false);
      }
    };

    if (isOpen) {
      document.addEventListener('mousedown', handleClickOutside);
    }

    return () => {
      document.removeEventListener('mousedown', handleClickOutside);
    };
  }, [isOpen]);

  return (
    <div className="space-y-2">
      {label && (
        <label className="text-sm font-medium text-gray-700 dark:text-gray-300">
          {label}
        </label>
      )}
      <div className="relative" ref={wrapperRef}>
        <Button
          type="button"
          variant="outline"
          onClick={() => setIsOpen(!isOpen)}
          className={cn(
            "w-full justify-start text-left font-normal h-10",
            !date && "text-muted-foreground",
            "bg-white dark:bg-gray-700 border-gray-300 dark:border-gray-600 text-gray-900 dark:text-white hover:bg-gray-50 dark:hover:bg-gray-600"
          )}
        >
          <CalendarIcon className="mr-2 h-4 w-4" />
          {date ? format(date, "PPP") : <span>Pick a date</span>}
        </Button>
        {isOpen && (
          <div className="absolute z-[9999] mt-1 bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded-md shadow-lg">
            <DatePickerLib
              selected={date || null}
              onChange={(selectedDate: Date | null) => {
                setDate(selectedDate || undefined);
                if (selectedDate) {
                  setIsOpen(false);
                }
              }}
              minDate={new Date()}
              inline
              calendarClassName="!border-0"
              wrapperClassName="w-full"
            />
          </div>
        )}
      </div>
    </div>
  );
}