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   "source": [
    "# TODO REFACTOR: Integrate code from _legacy/inference.py into this notebook"
   ]
  },
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   "cell_type": "markdown",
   "id": "47a9adb3",
   "metadata": {},
   "source": [
    "## This demo app shows how to query Llama 2 using the Gradio UI.\n",
    "\n",
    "Since we are using Replicate in this example, you will need to replace `<your replicate api token>` with your API token.\n",
    "\n",
    "To get the Replicate token: \n",
    "\n",
    "- You will need to first sign in with Replicate with your github account\n",
    "- Then create a free API token [here](https://replicate.com/account/api-tokens) that you can use for a while \n",
    "\n",
    "**Note** After the free trial ends, you will need to enter billing info to continue to use Llama2 hosted on Replicate.\n",
    "\n",
    "To run this example:\n",
    "- Set up your Replicate API token and enter it in place of `<your replicate api token>`\n",
    "- Run the notebook\n",
    "- Enter your question and click Submit\n",
    "\n",
    "In the notebook or a browser with URL http://127.0.0.1:7860 you should see a UI with your answer."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "928041cc",
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "Init param `input` is deprecated, please use `model_kwargs` instead.\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Running on local URL:  http://127.0.0.1:7860\n",
      "\n",
      "To create a public link, set `share=True` in `launch()`.\n"
     ]
    },
    {
     "data": {
      "text/html": [
       "<div><iframe src=\"http://127.0.0.1:7860/\" width=\"100%\" height=\"500\" allow=\"autoplay; camera; microphone; clipboard-read; clipboard-write;\" frameborder=\"0\" allowfullscreen></iframe></div>"
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     "execution_count": 1,
     "metadata": {},
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    }
   ],
   "source": [
    "from langchain.schema import AIMessage, HumanMessage\n",
    "import gradio as gr\n",
    "from langchain.llms import Replicate\n",
    "import os\n",
    "\n",
    "os.environ[\"REPLICATE_API_TOKEN\"] = \"<your replicate api token>\"\n",
    "\n",
    "llama2_13b_chat = \"meta/llama-2-13b-chat:f4e2de70d66816a838a89eeeb621910adffb0dd0baba3976c96980970978018d\"\n",
    "\n",
    "llm = Replicate(\n",
    "    model=llama2_13b_chat,\n",
    "    model_kwargs={\"temperature\": 0.01, \"top_p\": 1, \"max_new_tokens\":500}\n",
    ")\n",
    "\n",
    "\n",
    "def predict(message, history):\n",
    "    history_langchain_format = []\n",
    "    for human, ai in history:\n",
    "        history_langchain_format.append(HumanMessage(content=human))\n",
    "        history_langchain_format.append(AIMessage(content=ai))\n",
    "    history_langchain_format.append(HumanMessage(content=message))\n",
    "    gpt_response = llm(message) #history_langchain_format)\n",
    "    return gpt_response#.content\n",
    "\n",
    "gr.ChatInterface(predict).launch()"
   ]
  }
 ],
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