'use client';

import { useRouter } from 'next/navigation';

import { useRef } from 'react';
import Composer, { ComposerRef } from '@/components/chat/Composer';
import { dbPostCreateChat } from '@/lib/db/functions';
import { nanoid } from '@/lib/utils';
import Chip from '@/components/ui/Chip';
import { IconArrowUpRight } from '@/components/ui/Icons';
import { EXAMPLES } from '@/lib/constants';

export default function Page() {
  const router = useRouter();
  const composerRef = useRef<ComposerRef>(null);
  return (
    <div className="h-screen w-screen homepage">
      <div className="mx-auto w-[42rem] max-w-full px-4 mt-[200px]">
        <h1 className="mb-4 text-center relative">
          Vision Agent
          <Chip className="absolute bg-green-100 text-green-500">BETA</Chip>
        </h1>
        <h4 className="text-center">
          Generate code to solve your vision problem with simple prompts.
        </h4>
        <div className="my-8">
          <Composer
            ref={composerRef}
            onSubmit={async ({ input, mediaUrl }) => {
              const newId = nanoid();
              const resp = await dbPostCreateChat({
                id: newId,
                title: `conversation-${newId}`,
                mediaUrl,
                message: {
                  prompt: input,
                  mediaUrl,
                },
              });
              if (resp) {
                router.push(`/chat/${newId}`);
              }
            }}
          />
        </div>
        {EXAMPLES.map((example, index) => {
          return (
            <Chip
              key={index}
              className="bg-transparent border border-zinc-500 cursor-pointer px-4"
              onClick={() => {
                composerRef.current?.setInput(example.prompt);
                composerRef.current?.setMediaUrl(example.mediaUrl);
              }}
            >
              <div className="flex flex-row items-center space-x-2">
                <p className="text-primary text-sm">{example.title}</p>
                <IconArrowUpRight className="text-primary" />
              </div>
            </Chip>
          );
        })}
      </div>
    </div>
  );
}