import { Check, Clipboard } from 'lucide-react';
import { useRef } from 'react';
import { useAuth } from '../../hooks/use-auth';
import { useCopyText } from '../../hooks/use-copy-text';
import { useToast } from '../../hooks/use-toast';
import { cn } from '../../lib/classname';
import { Modal } from '../Modal';

type IncreaseRoadmapLimitProps = {
  onClose: () => void;
};

export function IncreaseRoadmapLimit(props: IncreaseRoadmapLimitProps) {
  const { onClose } = props;

  const user = useAuth();
  const toast = useToast();
  const inputRef = useRef<HTMLInputElement>(null);

  const { copyText, isCopied } = useCopyText();
  const referralLink = new URL(
    `/ai?rc=${user?.id}`,
    import.meta.env.DEV ? 'http://localhost:3000' : 'https://roadmap.sh',
  ).toString();

  const handleCopy = () => {
    inputRef.current?.select();
    copyText(referralLink);
    toast.success('Copied to clipboard');
  };

  return (
    <Modal
      onClose={onClose}
      overlayClassName={cn('overscroll-contain')}
      wrapperClassName="max-w-lg mx-auto"
      bodyClassName={cn('h-auto pt-px')}
    >
      <div className="p-4">
        <h2 className="text-xl font-semibold text-gray-800">
          Refer your Friends
        </h2>
        <p className="mt-2 text-sm text-gray-500">
          Share the URL below with your friends. When they sign up with your
          link, you will get extra roadmap generation credits.
        </p>

        <label className="mt-4 flex flex-col gap-2">
          <input
            ref={inputRef}
            className="w-full rounded-md border bg-gray-100 p-2 px-2.5 text-gray-700 focus:outline-none"
            value={referralLink}
            readOnly={true}
            onClick={handleCopy}
          />

          <button
            className={cn(
              'flex h-10 items-center justify-center gap-1.5 rounded-md p-2 px-2.5 text-sm',
              {
                'bg-green-500 text-black transition-colors': isCopied,
                'rounded-md bg-black text-white': !isCopied,
              },
            )}
            onClick={handleCopy}
            disabled={isCopied}
          >
            {isCopied ? (
              <>
                <Check className="h-4 w-4" />
                Copied to Clipboard
              </>
            ) : (
              <>
                <Clipboard className="h-4 w-4" />
                Copy URL
              </>
            )}
          </button>
        </label>
      </div>
    </Modal>
  );
}