import streamlit as st
from io import BytesIO
from datetime import datetime

from utils.pdf_utils import extract_text
from clients.azure_client import AzureClient
from clients.gemini_client import GeminiClient

from agents.tariff_agent import TariffTradeAgent
from agents.sales_agent import SalesAgent
from agents.supply_chain_agent import SupplyChainAgent
from agents.enhanced_chat_agent import EnhancedChatAgent

def main():
    st.set_page_config(page_title="Tariff & Trade Analyst Pro: Azure & Gemini", layout="wide")
    st.title("📄 Macy's Document Analysis & Chat Tool")

    # Mode selection (Azure or Gemini)
    provider_select = st.radio("Select AI Provider", ["Azure GPT", "Google Gemini"])

    # Session Initialization
    if "session" not in st.session_state:
        st.session_state.session = {
            'uploaded_files': {},
            'processed_files_tariff': {},
            'processed_files_sales': {},
            'processed_files_supplychain': {},
            'active_file': None,
            'active_topic': None,
            'topic_details_cache': {},
            'chat_history': [],
            'consolidated_summary_tariff': None,
            'consolidated_summary_sales': None,
            'consolidated_summary_supplychain': None,
            'last_analysis_mode': None
        }

    if "client" not in st.session_state or st.session_state.get("provider") != provider_select:
        # Initialize clients and agents based on selection
        if provider_select == "Azure GPT":
            st.session_state.client = AzureClient()
            is_azure = True
        else:
            st.session_state.client = GeminiClient()
            is_azure = False

        # Setup agents
        st.session_state.agent_tariff = TariffTradeAgent(st.session_state.client, is_azure)
        st.session_state.agent_sales = SalesAgent(st.session_state.client, is_azure)
        st.session_state.agent_supplychain = SupplyChainAgent(st.session_state.client, is_azure)
        st.session_state.chat_agent = EnhancedChatAgent(st.session_state.client, is_azure)
        st.session_state.provider = provider_select

    sess = st.session_state.session

    # --- File Upload Section ---
    st.subheader("1. Upload Documents")
    uploaded_files = st.file_uploader(
        "Upload Macy's earnings transcript PDFs",
        type=["pdf"],
        accept_multiple_files=True,
        key="file_uploader",
    )
    if uploaded_files:
        for file in uploaded_files:
            if file.name not in sess['uploaded_files']:
                sess['uploaded_files'][file.name] = file.getvalue()

    # --- Analysis Buttons Section ---
    st.subheader("2. Analyze Documents")
    col1, col2, col3 = st.columns(3)
    analyze_tariff = col1.button("🔍 Analyze Tariffs & Trade")
    analyze_sales = col2.button("📈 Analyze Sales & Consumer Behavior")
    analyze_supplychain = col3.button("🚚 Analyze Supply Chain & Logistics")

    mode = None
    agent = None
    processed_files = None

    if analyze_tariff or analyze_sales or analyze_supplychain:
        if not sess['uploaded_files']:
            st.error("Please upload documents before analyzing.")
            st.stop()

        if analyze_tariff:
            mode = "tariff"
            agent = st.session_state.agent_tariff
            processed_files = sess['processed_files_tariff']
        elif analyze_sales:
            mode = "sales"
            agent = st.session_state.agent_sales
            processed_files = sess['processed_files_sales']
        elif analyze_supplychain:
            mode = "supplychain"
            agent = st.session_state.agent_supplychain
            processed_files = sess['processed_files_supplychain']

        with st.spinner(f"Analyzing {mode} documents..."):
            for filename, file_bytes in sess['uploaded_files'].items():
                if filename not in processed_files:
                    try:
                        file_obj = BytesIO(file_bytes)
                        file_obj.name = filename
                        text = extract_text(file_obj)
                        if text:
                            topics = agent.analyze_document(text)
                            processed_files[filename] = {
                                "text": text,
                                "topics": topics,
                                "context": text,
                            }
                            st.toast(f"✅ Processed {filename}")
                        else:
                            st.error(f"❌ Failed to extract text for {filename}")
                    except Exception as e:
                        st.error(f"Error processing {filename}: {str(e)}")

        with st.spinner("Generating consolidated summary..."):
            summary = agent.generate_consolidated_summary_from_topics(processed_files)
            if mode == "tariff":
                sess['consolidated_summary_tariff'] = summary
            elif mode == "sales":
                sess['consolidated_summary_sales'] = summary
            elif mode == "supplychain":
                sess['consolidated_summary_supplychain'] = summary

        sess['last_analysis_mode'] = mode
        sess['active_file'] = None
        sess['active_topic'] = None

        st.success(f"Analysis and summary generated for {mode}.")

    # --- Show consolidated summary and topics ---
    last_mode = sess['last_analysis_mode']
    if last_mode is None:
        st.info("Select an analysis type above to get started.")
        return

    if last_mode == "tariff":
        processed_files = sess['processed_files_tariff']
        consolidated_summary = sess['consolidated_summary_tariff']
        sidebar_header = "Tariff Topics"
        main_header = "🌟 Consolidated Tariff & Trade Summary"
        agent = st.session_state.agent_tariff
    elif last_mode == "sales":
        processed_files = sess['processed_files_sales']
        consolidated_summary = sess['consolidated_summary_sales']
        sidebar_header = "Sales Topics"
        main_header = "🌟 Consolidated Sales & Consumer Behavior Summary"
        agent = st.session_state.agent_sales
    else:  # supplychain
        processed_files = sess['processed_files_supplychain']
        consolidated_summary = sess['consolidated_summary_supplychain']
        sidebar_header = "Supply Chain Topics"
        main_header = "🌟 Consolidated Supply Chain & Logistics Summary"
        agent = st.session_state.agent_supplychain

    st.header(main_header)
    if consolidated_summary:
        st.markdown(consolidated_summary)
    else:
        st.info(f"No consolidated summary available for {last_mode.capitalize()} yet.")

    st.markdown("---")

    st.sidebar.header(sidebar_header)
    for filename, filedata in processed_files.items():
        expanded = (filename == sess['active_file'])
        with st.sidebar.expander(f"📄 {filename}", expanded=expanded):
            topics = sorted(filedata["topics"], key=lambda t: t["score"], reverse=True)
            for topic in topics:
                is_selected = (
                    sess['active_file'] == filename and sess['active_topic'] == topic['name']
                )
                style = "primary" if is_selected else "secondary"

                if st.button(
                    f"• {topic['name']} (Score: {topic['score']})",
                    key=f"{last_mode}_topic_{filename}_{topic['name']}",
                    type=style,
                    use_container_width=True,
                ):
                    sess['active_file'] = filename
                    sess['active_topic'] = topic['name']

    st.subheader("Detailed Topic Analysis")
    if sess['active_file'] and sess['active_topic']:
        key_cache = (last_mode, sess['active_file'], sess['active_topic'])
        if key_cache in sess['topic_details_cache']:
            st.markdown(sess['topic_details_cache'][key_cache])
        else:
            placeholder = st.empty()
            collected_text = ""

            try:
                detail_stream = agent.generate_topic_detail(
                    # agent.prompt_sys,
                    # agent.prompt_detail,
                    processed_files[sess['active_file']]['context'],
                    sess['active_topic'],
                )
                for chunk in detail_stream:
                    collected_text = chunk
                    placeholder.markdown(collected_text)
                sess['topic_details_cache'][key_cache] = collected_text
            except Exception as e:
                st.error(f"Error showing topic detail: {str(e)}")

    else:
        st.info("Select a file and topic from the sidebar to view detailed analysis.")

    st.divider()

    # --- Advanced Chat: Tariff & Trade Policies ---
    st.subheader("💬 Advanced Document Analysis (Tariff & Trade)")
    tariff_files = list(sess['processed_files_tariff'].keys())
    selected_files = st.multiselect("Select documents for question answering:", tariff_files)

    for msg in sess['chat_history']:
        with st.chat_message(msg["role"]):
            st.markdown(msg["content"])

    question = st.chat_input("Ask a question about tariffs and trade policies")
    if question:
        if not selected_files:
            st.error("Select one or more documents for context before asking a question.")
            st.stop()

        sess['chat_history'].append({
            "role": "user",
            "content": question,
            "timestamp": datetime.utcnow().isoformat(),
        })

        if len(selected_files) == 1:
            context = sess['processed_files_tariff'][selected_files[0]]['context']
        else:
            context = "\n\n".join([
                f"=== Document: {fname} ===\n{sess['processed_files_tariff'][fname]['context']}"
                for fname in selected_files
            ])

        try:
            answer, q_type = st.session_state.chat_agent.generate_answer(question, context)
            sess['chat_history'].append({
                "role": "assistant",
                "content": answer,
                "timestamp": datetime.utcnow().isoformat(),
                "analysis_type": q_type
            })
            st.chat_message("assistant").markdown(answer)
        except Exception as e:
            st.error(f"Error during chat: {str(e)}")
            sess['chat_history'].append({
                "role": "assistant",
                "content": f"Error: {str(e)}",
                "timestamp": datetime.utcnow().isoformat(),
            })

    if st.button("🔄 Reset Session", type="secondary"):
        preserved_keys = ["client", "agent_tariff", "agent_sales", "agent_supplychain", "chat_agent", "provider"]
        preserved = {k: st.session_state[k] for k in preserved_keys if k in st.session_state}
        st.session_state.clear()
        st.session_state.update(preserved)
        st.session_state.session = {
            'uploaded_files': {},
            'processed_files_tariff': {},
            'processed_files_sales': {},
            'processed_files_supplychain': {},
            'active_file': None,
            'active_topic': None,
            'topic_details_cache': {},
            'chat_history': [],
            'consolidated_summary_tariff': None,
            'consolidated_summary_sales': None,
            'consolidated_summary_supplychain': None,
            'last_analysis_mode': None,
        }
        st.experimental_rerun()

if __name__ == "__main__":
    main()

this was main.py

import re
from PyPDF2 import PdfReader
import streamlit as st

def extract_text(file):
    try:
        reader = PdfReader(file)
        return "\n".join([page.extract_text() or "" for page in reader.pages])
    except Exception as e:
        st.error(f"Error reading {file.name}: {str(e)}")
        return ""

def parse_topics(text: str):
    topics = []
    pattern = r'^- (.*?): (.*?) \[(\d+)\]$'
    for line in text.split('\n'):
        line = line.strip()
        match = re.match(pattern, line)
        if match:
            topics.append({
                'name': match.group(1).strip(),
                'summary': match.group(2).strip(),
                'score': int(match.group(3).strip())
            })
    return topics

this was util.py

i have agents like below

from agents.base_agent import BaseAgent

class TariffTradeAgent(BaseAgent):
    prompt_sys = "Tariff and trade policy analyst for Macy's CEO"
    prompt_analyze = """You are a senior tariff and international trade policy analyst assisting a research team working for the CEO of Macy's.  
You have received a transcript/document from another company.  

Carefully identify all significant tariff, trade, and related government policy topics and detailed briefing in the text that could affect Macy's business operations, including supply chain, procurement, retail sales, and technology.

For each topic, provide:  
- A clear and concise topic name (e.g., "Vietnam Production Impact", "US-China Tariffs").  
- A brief describing in 200 words including its operational or strategic impact on Macy's retail business, considering the external company's context also include A clear overview of the topic, Key insights and any relevant direct excerpts from the document, Important figures, dates, or timelines if available, Detailed analysis on how this topic could impact Macy's retail operations, supply chain, procurement, and consumer behavior.  
- A relevance score from 1 (minor) to 10 (critical).  

Format your response as one topic per line in the format:  
- Topic Name: Summary [Relevance Score]

Example:  
- Vietnam Factory Shutdown: Supply chain delays expected due to production halt in Vietnam [9]  
- Tariff Changes on Apparel: Increased costs on imports from China may raise prices [8]

Analyze the following external company document for all relevant tariff and trade topics. Text:"""

    prompt_summary = """You are a senior tariff and trade analyst preparing a consolidated tariff and trade policy report for Macy's executive team.

You have reviewed tariff and trade topics extracted from multiple external company documents. These topics include their names, summaries, and relevance scores. Based on their content, please:

1. **OverView**: Identify and describe from all documents all their impactful tariff, trade, and related government policy topics that could affect Macy's business operations, including supply chain, procurement, retail sales, and technology.
2. For each topic:
   - Provide a concise summary from combining all the documents.
   - Include relevant examples, numerical data, or timelines from the documents also provide from which document it is taken.
   - Explain operational and strategic impacts—positive, negative, or neutral—specifically tailored to Macy's retail business.
   - Provide 3-5 actionable strategic recommendations for Macy's leadership.
3. Use markdown formatting with clear headings.
4. Avoid jargon and focus on practical operational impacts and strategy insights.

Format your response in markdown with clear headings for each topic.

Here are the topics extracted from documents:

{topics_block}

Deliver a detailed, synthesized, and actionable consolidated tariff and trade policy report for Macy's."""

    prompt_detail = """You are preparing a detailed briefing for Macy's CEO on the tariff and trade policy topic '{topic}', based on the provided external company document.

Provide:
1. A clear overview of the topic.
2. Key insights and any relevant direct excerpts from the document.
3. Important figures, dates, or timelines if available.
4. Detailed analysis on how this topic could impact Macy's retail operations, supply chain, procurement, and consumer behavior.
5. 3-5 actionable strategic recommendations for Macy's leadership.

Document:
{text}

Topic: {topic}

Please deliver the response as structured markdown suitable for executive briefing."""

    def analyze_document(self, text):
        return super().analyze_document(self.prompt_sys, self.prompt_analyze, text)

    def generate_consolidated_summary_from_topics(self, processed_files):
        return super().generate_consolidated_summary_from_topics(self.prompt_sys, self.prompt_summary, processed_files)

    def generate_topic_detail(self, text, topic):
        return super().generate_topic_detail(self.prompt_sys, self.prompt_detail, text, topic)

this was tariff agent i need to create a button before Tariff analysis as Overall Consise summary  and it needs to be genrated as we upload the file directly and we can show the Overall topics in sidebar in one all the topics from each files 

so according to this give me the code for each different files