import gradio as gr
import numpy as np
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain.chains import LLMChain
from langchain import PromptTemplate
import re
import pandas as pd
from langchain.vectorstores import FAISS
import requests
from typing import List
from langchain.schema import (
    SystemMessage,
    HumanMessage,
    AIMessage
)
import os
from langchain.embeddings import HuggingFaceEmbeddings
from langchain.chat_models import ChatOpenAI

from langchain.llms.base import LLM
from typing import Optional, List, Mapping, Any

import ast
from utils import ClaudeLLM, extract_website_name, remove_numbers

embeddings = HuggingFaceEmbeddings()
db = FAISS.load_local('db_full', embeddings)

mp_docs = {}
llm = ClaudeLLM()
# ChatOpenAI(
#             temperature=0,
#             model='gpt-3.5-turbo-16k'
#         )


def add_text(history, text):

    print(history)
    history = history + [(text, None)]

    return history, ""


def retrieve_thoughts(query, ):
  # print(db.similarity_search_with_score(query = query, k = k, fetch_k = k*10))
  docs = db.similarity_search_with_score(query = query, k = 1500, fetch_k = len(db.index_to_docstore_id.values()))
  
  # TO-DO: What if user query doesn't match what we provide as documents
    
  tier_1 = [doc[0]  for doc in docs if ((doc[1] < 1))][:5]
  tier_2 = [doc[0]  for doc in docs if ((doc[1] > 0.7)*(doc[1] < 1.5))][10:15]

  return {'tier 1':tier_1, 'tier 2': tier_2}

def qa_retrieve(query,):

    docs = ""

    global db
    print(db)

    global mp_docs
    thoughts = retrieve_thoughts(query)
    if not(thoughts):

        if mp_docs:
            thoughts = mp_docs
    else:
        mp_docs = thoughts

    tier_1 = thoughts['tier 1']
    tier_2 = thoughts['tier 2']

    reference = [{'id': f'{i+1}','title': thought.metadata['title'], 'website': extract_website_name(thought.metadata['url']), 'url': thought.metadata['url'], } for i, thought in enumerate(tier_1)]

    tier_1 = [f"[{i+1}] title: {thought.metadata['title']}\n Content: {thought.page_content}" for i, thought in enumerate(tier_1)]
    tier_2 = [f"title: {thought.metadata['title']}\n Content: {thought.page_content}" for thought in tier_2]

    print(f"QUERY: {query}\nTIER 1: {tier_1}\nTIER2: {tier_2}")
    # print(f"DOCS RETRIEVED: {mp_docs.values}")

    # Cynthesis Generation
    session_prompt = """ A bot that is open to discussions about different cultural, philosophical and political exchanges. You will use do different analysis to the articles provided to me. Stay truthful and if you weren't provided any resources give your oppinion only."""
    task = """Create a coherent synthesis in which you use references to the id of articles provided and relevant to the query. 
    
    Follow the example structure:

    The best wine to pair with steak depends on the cut of steak and the preparation. Here are some general guidelines for pairing wine with steak:
    - Choose a dry red wine. The rule of thumb is to choose dry red wines 
    -  leaner cuts of meat pair with lighter wines, while richer, fattier cuts pair up with high tannin wines that can cut through the fat [1].
    - Consider the cut of steak. Lighter red wines tend to go best with the leaner cuts of steak such as filet mignon, while more marbled, higher fat cuts of meat like a rib eye do well when accompanied by more robust red wines [3].
    - Take into account the preparation. For a spiced steak, go for a wine with lots of fruit to balance out the heat, like an Old Vine Zinfandel. And if you're drowning your steak in a decadent sauce, find a wine with enough body to stand up to it, like a Cabernet Sauvignon [5].
    - Popular wine choices include Cabernet Sauvignon, Pinot Noir, Zinfandel, Malbec, Syrah, and Merlot [2].
    Remember, the goal is to choose a wine that complements the cut of steak and not overwhelm or take away from the flavor of the meat [3]."
    """

    prompt = PromptTemplate(
            input_variables=["query", "task", "session_prompt", "articles"],
            template="""
            You are a {session_prompt}
            {task}

            query: {query}

            Articles:
            {articles}

            Make sure to quote the article used if the argument corresponds to the query.
            Use careful reasoning to explain your answer and give your conclusion about this.
            """,
        )

    # llm = BardLLM()
    chain = LLMChain(llm=llm, prompt = prompt)

    response = chain.run(query=query, articles="\n".join(tier_1), session_prompt = session_prompt, task = task)
    
    for i in range(1, 6):
      response = response.replace(f'[{i}]', f"<span class='text-primary'>[{i}]</span>")
    
    # Generate related questions
    prompt_q = PromptTemplate(
            input_variables=[ "session_prompt", "articles"],
            template="""
            You are a {session_prompt}
            Give general/global questions related the following articles:

            Articles:
            {articles}

            Make sure not to ask specific questions, keep them general, short and concise.
            """,
        )

    chain_q = LLMChain(llm=llm, prompt = prompt_q)

    questions = chain_q.run(session_prompt = session_prompt, articles = "\n".join(tier_2), )
    questions = questions[questions.index('1'):]

    questions = [ remove_numbers(t).strip() for (i, t) in enumerate(questions.split('.'))  if len(t) > 5][:5]

    json_resp = {'cynthesis': response, 'questions': questions, 'reference': reference}

    return json_resp

examples = [
    ["Will Russia win the war in Ukraine?"],

    ]
demo = gr.Interface(fn=qa_retrieve, title="cicero-qa-api", 
                     inputs=gr.inputs.Textbox(lines=5, label="what would you like to learn about?"),
                     outputs="json",examples=examples)

demo.launch()