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import type { Message } from 'ai';
import React from 'react';
import { classNames } from '~/utils/classNames';
import { AssistantMessage } from './AssistantMessage';
import { UserMessage } from './UserMessage';
import * as Tooltip from '@radix-ui/react-tooltip';
import { useLocation } from '@remix-run/react';
import { db, chatId } from '~/lib/persistence/useChatHistory';
import { forkChat } from '~/lib/persistence/db';
import { toast } from 'react-toastify';

interface MessagesProps {
  id?: string;
  className?: string;
  isStreaming?: boolean;
  messages?: Message[];
}

export const Messages = React.forwardRef<HTMLDivElement, MessagesProps>((props: MessagesProps, ref) => {
  const { id, isStreaming = false, messages = [] } = props;
  const location = useLocation();

  const handleRewind = (messageId: string) => {
    const searchParams = new URLSearchParams(location.search);
    searchParams.set('rewindTo', messageId);
    window.location.search = searchParams.toString();
  };

  const handleFork = async (messageId: string) => {
    try {
      if (!db || !chatId.get()) {
        toast.error('Chat persistence is not available');
        return;
      }

      const urlId = await forkChat(db, chatId.get()!, messageId);
      window.location.href = `/chat/${urlId}`;
    } catch (error) {
      toast.error('Failed to fork chat: ' + (error as Error).message);
    }
  };

  return (
    <Tooltip.Provider delayDuration={200}>
      <div id={id} ref={ref} className={props.className}>
        {messages.length > 0
          ? messages.map((message, index) => {
              const { role, content, id: messageId } = message;
              const isUserMessage = role === 'user';
              const isFirst = index === 0;
              const isLast = index === messages.length - 1;

              return (
                <div
                  key={index}
                  className={classNames('flex gap-4 p-6 w-full rounded-[calc(0.75rem-1px)]', {
                    'bg-bolt-elements-messages-background': isUserMessage || !isStreaming || (isStreaming && !isLast),
                    'bg-gradient-to-b from-bolt-elements-messages-background from-30% to-transparent':
                      isStreaming && isLast,
                    'mt-4': !isFirst,
                  })}
                >
                  {isUserMessage && (
                    <div className="flex items-center justify-center w-[34px] h-[34px] overflow-hidden bg-white text-gray-600 rounded-full shrink-0 self-start">
                      <div className="i-ph:user-fill text-xl"></div>
                    </div>
                  )}
                  <div className="grid grid-col-1 w-full">
                    {isUserMessage ? <UserMessage content={content} /> : <AssistantMessage content={content} />}
                  </div>
                  {!isUserMessage && (
                    <div className="flex gap-2 flex-col lg:flex-row">
                      <Tooltip.Root>
                        <Tooltip.Trigger asChild>
                          {messageId && (
                            <button
                              onClick={() => handleRewind(messageId)}
                              key="i-ph:arrow-u-up-left"
                              className={classNames(
                                'i-ph:arrow-u-up-left',
                                'text-xl text-bolt-elements-textSecondary hover:text-bolt-elements-textPrimary transition-colors',
                              )}
                            />
                          )}
                        </Tooltip.Trigger>
                        <Tooltip.Portal>
                          <Tooltip.Content
                            className="bg-bolt-elements-tooltip-background text-bolt-elements-textPrimary px-3 py-2 rounded-lg text-sm shadow-lg"
                            sideOffset={5}
                            style={{ zIndex: 1000 }}
                          >
                            Revert to this message
                            <Tooltip.Arrow className="fill-bolt-elements-tooltip-background" />
                          </Tooltip.Content>
                        </Tooltip.Portal>
                      </Tooltip.Root>

                      <Tooltip.Root>
                        <Tooltip.Trigger asChild>
                          <button
                            onClick={() => handleFork(messageId)}
                            key="i-ph:git-fork"
                            className={classNames(
                              'i-ph:git-fork',
                              'text-xl text-bolt-elements-textSecondary hover:text-bolt-elements-textPrimary transition-colors',
                            )}
                          />
                        </Tooltip.Trigger>
                        <Tooltip.Portal>
                          <Tooltip.Content
                            className="bg-bolt-elements-tooltip-background text-bolt-elements-textPrimary px-3 py-2 rounded-lg text-sm shadow-lg"
                            sideOffset={5}
                            style={{ zIndex: 1000 }}
                          >
                            Fork chat from this message
                            <Tooltip.Arrow className="fill-bolt-elements-tooltip-background" />
                          </Tooltip.Content>
                        </Tooltip.Portal>
                      </Tooltip.Root>
                    </div>
                  )}
                </div>
              );
            })
          : null}
        {isStreaming && (
          <div className="text-center w-full text-bolt-elements-textSecondary i-svg-spinners:3-dots-fade text-4xl mt-4"></div>
        )}
      </div>
    </Tooltip.Provider>
  );
});