import streamlit as st
import random
import time
import git
import os, shutil, stat
from google.api_core.exceptions import InternalServerError

flag = False
repo = st.text_input(label="Paste the .git link of repository.")
btn = st.button(label="Submit")

def rm_dir_readonly(func, path, _):
    os.chmod(path, stat.S_IWRITE)
    func(path)


def clone_repo(repo):
    if os.path.exists("githubCode") and os.path.isdir("githubCode"):
        print("File already exists!!")
        # shutil.rmtree('githubCode', onerror=rm_dir_readonly)
        # print("cleaning and cloning repo")
        # git.Repo.clone_from(repo,"githubCode")

        with open("Code.txt", "r+", encoding="utf-8") as output:
            output.truncate(0)    
            output.seek(0)
    else:
        print("Cloning repo!!")
        git.Repo.clone_from(repo,"githubCode")
        
if btn and not flag:
    clone_repo(repo=repo)
    flag = True

st.title("Nile")

if flag:
    from get_stack import techStack
    st.markdown(techStack)

# Initialize chat history
if "messages" not in st.session_state:
    st.session_state.messages = []

# Display chat messages from history on app rerun
for message in st.session_state.messages:
    with st.chat_message(message["role"]):
        st.markdown(message["content"])

# Accept user input
if prompt := st.chat_input("What's your question ?"):
    from util import ask, techStack
    techStack = True
    # Add user message to chat history
    st.markdown(techStack)
    st.session_state.messages.append({"role": "user", "content": prompt})
    # Display user message in chat message container
    with st.chat_message("user"):
        st.markdown(prompt)

    # Display assistant response in chat message container
    with st.chat_message("assistant"):
        try:
            response = ask(prompt)
        except InternalServerError as err:
            retry_attempts = 0
            MAX_RETRIES = 2
            if retry_attempts < MAX_RETRIES:
                retry_attempts += 1
                time.sleep(2)
                response = ask(prompt)
            else:
                # If retries are exhausted, log the error for further investigation
                response = "500 An internal error has occurred. Please retry or report in https://developers.generativeai.google/guide/troubleshooting"

        # print(response)
        st.markdown(response)
    # Add assistant response to chat history
    st.session_state.messages.append({"role": "assistant", "content": response})