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'use client';

import * as React from 'react';
import { type UseChatHelpers } from 'ai/react';
import Textarea from 'react-textarea-autosize';

import { Button } from '@/components/ui/Button';
import { MessageBase } from '../../lib/types';
import { useEnterSubmit } from '@/lib/hooks/useEnterSubmit';
import Img from '../ui/Img';
import {
  Tooltip,
  TooltipContent,
  TooltipTrigger,
} from '@/components/ui/Tooltip';
import {
  IconArrowDown,
  IconArrowElbow,
  IconImage,
  IconRefresh,
  IconStop,
} from '@/components/ui/Icons';
import { cn } from '@/lib/utils';
import { generateInputImageMarkdown } from '@/lib/messageUtils';
import { Switch } from '../ui/Switch';
import Chip from '../ui/Chip';

export interface ComposerProps
  extends Pick<
    UseChatHelpers,
    'append' | 'isLoading' | 'reload' | 'stop' | 'input' | 'setInput'
  > {
  id?: string;
  title?: string;
  messages: MessageBase[];
  mediaUrl?: string;
}

export function Composer({
  id,
  isLoading,
  append,
  input,
  setInput,
  mediaUrl,
  // isAtBottom,
}: ComposerProps) {
  const { formRef, onKeyDown } = useEnterSubmit();
  const inputRef = React.useRef<HTMLTextAreaElement>(null);
  React.useEffect(() => {
    if (inputRef.current) {
      inputRef.current.focus();
    }
  }, []);

  const mediaName = mediaUrl?.split('/').pop();
  return (
    <div className="size-full mx-auto max-w-2xl px-6 py-3 space-y-4 bg-zinc-700 rounded-xl relative shadow-lg shadow-zinc-800/40">
      {mediaUrl && (
        <Tooltip>
          <TooltipTrigger>
            <Chip>
              <div className="flex flex-row items-center">
                <IconImage className="size-3 mr-1" />
                <p>{mediaName ?? 'media(0)'}</p>
              </div>
            </Chip>
          </TooltipTrigger>
          <TooltipContent sideOffset={20}>
            <Img
              src={mediaUrl}
              className="m-1"
              quality={100}
              alt="zoomed-in-image"
            />
          </TooltipContent>
        </Tooltip>
      )}
      <form
        onSubmit={async e => {
          e.preventDefault();
          if (!input?.trim()) {
            return;
          }
          setInput('');
          await append({
            id,
            content:
              input +
              (mediaUrl ? '\n\n' + generateInputImageMarkdown(mediaUrl) : ''),
            role: 'user',
          });
        }}
        ref={formRef}
        className="h-full"
      >
        {/* <div className="border-gray-500 flex overflow-hidden size-full flex flex-row items-center"> */}
        <Textarea
          ref={inputRef}
          tabIndex={0}
          onKeyDown={onKeyDown}
          rows={1}
          value={input}
          disabled={isLoading}
          onChange={e => setInput(e.target.value)}
          placeholder={isLoading ? '🤖 ✨ ...' : 'Message Vision Agent'}
          spellCheck={false}
          className="w-full grow resize-none bg-transparent focus-within:outline-none text-sm"
        />
        {/* Stop / Regenerate Icon */}
        {/* <div className="absolute bottom-14 right-4">
              {isLoading ? (
                <Tooltip>
                  <TooltipTrigger asChild>
                    <Button
                      variant="outline"
                      size="icon"
                      className="bg-background"
                      onClick={() => stop()}
                    >
                      <IconStop />
                    </Button>
                  </TooltipTrigger>
                  <TooltipContent>Stop generating</TooltipContent>
                </Tooltip>
              ) : (
                messages?.length >= 2 && (
                  <Tooltip>
                    <TooltipTrigger asChild>
                      <Button
                        variant="outline"
                        size="icon"
                        className="bg-background"
                        onClick={() => reload()}
                      >
                        <IconRefresh />
                      </Button>
                    </TooltipTrigger>
                    <TooltipContent>Regenerate response</TooltipContent>
                  </Tooltip>
                )
              )}
            </div> */}
        {/* </div> */}
        {/* Submit Icon */}
        <Tooltip>
          <TooltipTrigger asChild>
            <Button
              type="submit"
              size="icon"
              className="size-6 absolute bottom-3 right-3"
              disabled={isLoading || input === ''}
            >
              <IconArrowElbow className="size-3" />
            </Button>
          </TooltipTrigger>
          <TooltipContent>Send message</TooltipContent>
        </Tooltip>
      </form>
      {/* Scroll to bottom Icon */}
      {/* <Tooltip>
        <TooltipTrigger asChild>
          <Button
            size="icon"
            className={cn(
              'absolute top-1 right-3 transition-opacity duration-300 size-6',
              isAtBottom ? 'opacity-0' : 'opacity-100',
            )}
            onClick={() => scrollToBottom()}
          >
            <IconArrowDown className="size-3" />
          </Button>
        </TooltipTrigger>
        <TooltipContent>Scroll to bottom</TooltipContent>
      </Tooltip> */}
    </div>
  );
}