import React, { useState, useEffect } from 'react';
import TextWrapper from './TextWrapper';
import { useSelector } from 'react-redux';
import GPTIcon from '../svg/GPTIcon';
import BingIcon from '../svg/BingIcon';

export default function Message({
  sender,
  text,
  last = false,
  error = false,
  scrollToBottom
}) {
  const { isSubmitting } = useSelector((state) => state.submit);
  const [abortScroll, setAbort] = useState(false);
  const notUser = sender.toLowerCase() !== 'user';
  const blinker = isSubmitting && last && notUser;

  useEffect(() => {
    if (blinker && !abortScroll) {
      scrollToBottom();
    }
  }, [isSubmitting, text, blinker, scrollToBottom, abortScroll]);

  const handleWheel = () => {
    if (blinker) {
      setAbort(true);
    } else {
      setAbort(false);
    }
  };

  const props = {
    className:
      'w-full border-b border-black/10 dark:border-gray-900/50 text-gray-800 dark:text-gray-100 group dark:bg-gray-800'
  };

  let icon = `${sender}:`;
  const isGPT = sender === 'chatgpt' || sender === 'davinci' || sender === 'GPT';

  if (notUser) {
    props.className =
      'w-full border-b border-black/10 dark:border-gray-900/50 text-gray-800 dark:text-gray-100 group bg-gray-100 dark:bg-[#444654]';
    icon = (
      <div
        style={isGPT ? { backgroundColor: 'rgb(16, 163, 127)' } : {}}
        className="relative flex h-[30px] w-[30px] items-center justify-center rounded-sm p-1 text-white"
      >
        {sender === 'bingai' ? <BingIcon /> : <GPTIcon />}
      </div>
    );
  }

  const wrapText = (text) => <TextWrapper text={text} />;

  return (
    <div
      {...props}
      onWheel={handleWheel}
    >
      <div className="m-auto flex gap-4 p-4 text-base md:max-w-2xl md:gap-6 md:py-6 lg:max-w-2xl lg:px-0 xl:max-w-3xl">
        <strong className="relative flex w-[30px] flex-col items-end">{icon}</strong>
        <div className="relative flex w-[calc(100%-50px)] flex-col gap-1 whitespace-pre-wrap md:gap-3 lg:w-[calc(100%-115px)]">
          <div className="flex flex-grow flex-col gap-3">
            {error ? (
              <div className="flex flex min-h-[20px] flex-row flex-col items-start gap-4 gap-2 whitespace-pre-wrap text-red-500">
                <div className="rounded-md border border-red-500 bg-red-500/10 py-2 px-3 text-sm text-gray-600 dark:text-gray-100">
                  {text}
                </div>
              </div>
            ) : (
              <div className="flex min-h-[20px] flex-col items-start gap-4 whitespace-pre-wrap">
                <div className="markdown prose dark:prose-invert light w-full break-words">
                  {notUser ? wrapText(text) : text}
                  {blinker && <span className="result-streaming">█</span>}
                </div>
              </div>
            )}
          </div>
        </div>
      </div>
    </div>
  );
}