# https://chat.lmsys.org/?leaderboard
import langchain
import transformers
# https://huggingface.co/spaces/joyson072/LLm-Langchain/blob/main/app.py
from langchain.llms import HuggingFaceHub


# for the chain and prompt
from langchain.prompts import PromptTemplate
from langchain.llms import HuggingFaceHub
from langchain.chains import LLMChain

#import model class and tokenizer
from transformers import BlenderbotTokenizer, BlenderbotForConditionalGeneration

#import model class and tokenizer
from transformers import BlenderbotTokenizer, BlenderbotForConditionalGeneration


###
# Definition of different purspose prompts
# https://huggingface.co/spaces/Chris4K/rlhf-arena/edit/main/app.py
####
def prompt_human_instruct(system_msg, history):
    return system_msg.strip() + "\n" + \
        "\n".join(["\n".join(["###Human: "+item[0], "###Assistant: "+item[1]])
        for item in history])


def prompt_instruct(system_msg, history):
    return system_msg.strip() + "\n" + \
        "\n".join(["\n".join(["### Instruction: "+item[0], "### Response: "+item[1]])
        for item in history])


def prompt_chat(system_msg, history):
    return system_msg.strip() + "\n" + \
        "\n".join(["\n".join(["USER: "+item[0], "ASSISTANT: "+item[1]])
        for item in history])


def prompt_roleplay(system_msg, history):
    return "<|system|>" + system_msg.strip() + "\n" + \
        "\n".join(["\n".join(["<|user|>"+item[0], "<|model|>"+item[1]])
        for item in history])


####
## Sentinent models
# https://huggingface.co/spaces/CK42/sentiment-model-comparison
# 1, 4 seem best for german
####
model_id_1 = "nlptown/bert-base-multilingual-uncased-sentiment"
model_id_2 = "microsoft/deberta-xlarge-mnli"
model_id_3 = "distilbert-base-uncased-finetuned-sst-2-english"
model_id_4 = "lordtt13/emo-mobilebert"
model_id_5 = "juliensimon/reviews-sentiment-analysis"
model_id_6 = "sbcBI/sentiment_analysis_model"
model_id_7 = "oliverguhr/german-sentiment-bert"

# https://colab.research.google.com/drive/1hrS6_g14EcOD4ezwSGlGX2zxJegX5uNX#scrollTo=NUwUR9U7qkld
#llm_hf_sentiment = HuggingFaceHub(
#    repo_id= model_id_7,
#    model_kwargs={"temperature":0.9 }
#)
 
#sentiment_prompt = PromptTemplate(
#    input_variables=["text_input"],
#    template="Extract the key facts out of this text. Don't include opinions. Give each fact a number and keep them short sentences. :\n\n {text_input}"
#)

#def sentiment (  message):
#  sentiment_chain = LLMChain(llm=llm_hf_sentiment, prompt=sentiment_prompt)
#  facts = sentiment_chain.run(message)
#  print(facts)
#  return facts





####
## Chat models
# https://huggingface.co/spaces/CK42/sentiment-model-comparison
# 1 seem best for testing
####
chat_model_facebook_blenderbot_400M_distill = "facebook/blenderbot-400M-distill"
chat_model_HenryJJ_vincua_13b = "HenryJJ/vincua-13b"





text = "Why did the chicken cross the road?"

#output_question_1 = llm_hf(text)
#print(output_question_1)



###
## FACT EXTRACTION
###
# https://colab.research.google.com/drive/1hrS6_g14EcOD4ezwSGlGX2zxJegX5uNX#scrollTo=NUwUR9U7qkld
llm_factextract = HuggingFaceHub(
    
    repo_id="google/flan-ul2", 
#    repo_id="google/flan-t5-small", 
    model_kwargs={"temperature":0.1,
                  "max_new_tokens":256})
 
fact_extraction_prompt = PromptTemplate(
    input_variables=["text_input"],
    template="Extract the key facts out of this text. Don't include opinions. Give each fact a number and keep them short sentences. :\n\n {text_input}"
)

def factextraction (message):
  fact_extraction_chain = LLMChain(llm=llm_factextract, prompt=fact_extraction_prompt)
  facts = fact_extraction_chain.run(message)
  print(facts)
  return facts


####
##   models
# 1 seem best for testing
####
#download and setup the model and tokenizer
model_name = 'facebook/blenderbot-400M-distill'
tokenizer = BlenderbotTokenizer.from_pretrained(model_name)
model = BlenderbotForConditionalGeneration.from_pretrained(model_name)

def func (message):
  inputs = tokenizer(message, return_tensors="pt")
  result = model.generate(**inputs)
  return tokenizer.decode(result[0])

import gradio as gr
app = gr.Interface(fn=factextraction, inputs="textbox", outputs="textbox", title="Conversation Bot")
app.launch()