import os
import uuid
from pathlib import Path

from llm_manager.llm_parser import LlmParser
from prompts.prompts_manager import PromptsManager

from repository.repository import get_repository
from repository.repository_abc import ModelRoles, Model
from form.form import build_form_data_from_answers, write_pdf_form

import streamlit as st

user_msg = "Please describe what you need to do. To get the best results try to answer all the following questions:"

def check_for_missing_answers(parsed_questions: dict[int, str]):
    return [k for k in parsed_questions if parsed_questions[k] is None]

def use_streamlit():
    pm = PromptsManager()
    help_ = f"{user_msg}\n\n" + '\n'.join(pm.questions)
    repository = get_repository("ondemand", Model("ondemand-gpt-3.5-turbo", ModelRoles("system", "user", "assistant")))
    if not st.session_state.get("step"):
        with st.form("Please describe your request"):
            user_input = st.text_area("Your input", height=700, label_visibility="hidden", placeholder=help_, help=help_)
            signature = st.file_uploader("Your signature", key="file_upload")
            st.session_state["signature"] = signature
            st.session_state["session_id"] = str(uuid.uuid4())
            button = st.form_submit_button()

        if button:
            llama3 = "meta-llama/Meta-Llama-3-8B-Instruct"
            # repository = get_repository("intel_npu", Model(llama3,
            #                                                ModelRoles("system", "user", "assistant")),
            #                             pm.system_prompt, Path("llm_log.txt"))
            st.session_state["step"] = "parsing_answers"
    if st.session_state.get("step") == "parsing_answers":
        with st.status("initialising LLM"):
            repository.init()
        with st.status("waiting for LLM"):
            repository.send_prompt(pm.ingest_user_answers(user_input))
            answer = repository.send_prompt(pm.verify_user_input_prompt(user_input))
        with st.status("Checking for missing answers"):
            st.session_state["answers"] = LlmParser.parse_verification_prompt_answers(answer['content'])

        st.session_state["missing_answers"] = check_for_missing_answers(st.session_state["answers"])
        if not st.session_state.get("missing_answers"):
            st.session_state["step"] = "check_category"
        else:
            st.session_state["step"] = "ask_again"

    if st.session_state.get("step") == "ask_again":
        with st.form("form1"):
            for ma in st.session_state["missing_answers"]:
                st.text_input(pm.questions[ma].lower(), key=ma)
            submitted = st.form_submit_button("Submit answers")
            if submitted:
                st.session_state["step"] = "check_category"
                for ma in st.session_state["missing_answers"]:
                    st.session_state["answers"][ma] = st.session_state[ma]

    if st.session_state.get("step") == "check_category":
        with st.status("finding the work categories applicable to your work"):
            answer = repository.send_prompt(pm.get_work_category(st.session_state["answers"][1]))
            categories = LlmParser.parse_get_categories_answer(answer['content'])

        with st.status("categories found, creating PDF form"):

            form_filename = f"{st.session_state['session_id']}_form.pdf"
            st.session_state["form_filename"] = form_filename
            form_data = build_form_data_from_answers(st.session_state["answers"], categories,
                                                     st.session_state.get("signature"))
            write_pdf_form(form_data, Path(form_filename))
            st.session_state["step"] = "form_created"
    if st.session_state.get("step") == "form_created":
        with open(Path(st.session_state["form_filename"]), "rb") as form:
            st.download_button("download form", form.read(), mime="application/pdf")
        start_over_button = st.button("Start over")
        if start_over_button:
            del st.session_state["step"]
            os.unlink(st.session_state["form_filename"])


use_streamlit()