import streamlit as st
import requests
import pandas as pd
import os 

# ---------------------------
# Global Variables
# ---------------------------
API_KEY = os.getenv("FMP_API_KEY")
DEFAULT_RSS_PAGE = 5  # User no longer sees this. We fetch page=5 by default.
DEFAULT_SEARCH_NAME = "enotap"
DEFAULT_CIK = "0001916078"

# ---------------------------
# Initialize Session State
# ---------------------------
if "run_rss" not in st.session_state:
    st.session_state.run_rss = False
if "run_search" not in st.session_state:
    st.session_state.run_search = False
if "run_cik" not in st.session_state:
    st.session_state.run_cik = False

if "rss_page" not in st.session_state:
    st.session_state.rss_page = DEFAULT_RSS_PAGE
if "search_name" not in st.session_state:
    st.session_state.search_name = DEFAULT_SEARCH_NAME
if "cik_value" not in st.session_state:
    st.session_state.cik_value = DEFAULT_CIK

# ---------------------------
# CACHED API FUNCTIONS
# ---------------------------
@st.cache_data(show_spinner=False)
def fetch_crowdfunding_rss(page: int) -> pd.DataFrame:
    """
    Fetch the crowdfunding live feed data for the given page.
    """
    url = f"https://financialmodelingprep.com/api/v4/crowdfunding-offerings-rss-feed?page={page}&apikey={API_KEY}"
    try:
        response = requests.get(url)
        response.raise_for_status()
        data = response.json()
    except:
        return pd.DataFrame()
    if not data:
        return pd.DataFrame()
    return pd.DataFrame(data)

@st.cache_data(show_spinner=False)
def fetch_crowdfunding_search(name: str) -> pd.DataFrame:
    """
    Search for crowdfunding campaigns by name.
    """
    url = f"https://financialmodelingprep.com/api/v4/crowdfunding-offerings/search?name={name}&apikey={API_KEY}"
    try:
        response = requests.get(url)
        response.raise_for_status()
        data = response.json()
    except:
        return pd.DataFrame()
    if not data:
        return pd.DataFrame()
    return pd.DataFrame(data)

@st.cache_data(show_spinner=False)
def fetch_crowdfunding_by_cik(cik: str) -> pd.DataFrame:
    """
    Fetch all crowdfunding campaigns launched by a company identified by its CIK.
    """
    url = f"https://financialmodelingprep.com/api/v4/crowdfunding-offerings?cik={cik}&apikey={API_KEY}"
    try:
        response = requests.get(url)
        response.raise_for_status()
        data = response.json()
    except:
        return pd.DataFrame()
    if not data:
        return pd.DataFrame()
    return pd.DataFrame(data)

# ---------------------------
# MAIN APP
# ---------------------------
def main():
    st.set_page_config(page_title="Crowdfunding Campaigns", layout="wide")
    st.title("Crowdfunding Campaigns")
    st.write(
        "Access real-time crowdfunding campaign data. "
        "Use the side menu to select one of the three pages below. "
        "Each page provides a table with specific campaign details."
    )
    
    # Sidebar: Navigation and Options
    with st.sidebar.expander("Navigation and Options", expanded=True):
        page = st.radio(
            "Select Page",
            ("Crowdfunding Live Feed", "Crowdfunding Search", "Crowdfunding By CIK"),
            help=(
                "Crowdfunding Live Feed: View up-to-date campaign data. "
                "Crowdfunding Search: Find campaigns by name. "
                "Crowdfunding By CIK: Show campaigns for a company by its CIK."
            )
        )
        
        if page == "Crowdfunding Live Feed":
            # Removed the page input from the user.
            if st.button("Run Crowdfunding Live Feed"):
                st.session_state.run_rss = True
        elif page == "Crowdfunding Search":
            search_name = st.text_input(
                "Campaign/Company Name",
                value=st.session_state.search_name,
                help="Enter the name to search for crowdfunding campaigns (e.g., enotap)."
            )
            st.session_state.search_name = search_name
            if st.button("Run Crowdfunding Search"):
                st.session_state.run_search = True
        else:  # Crowdfunding By CIK
            cik_value = st.text_input(
                "Company CIK",
                value=st.session_state.cik_value,
                help="Enter the CIK of the company to fetch its crowdfunding campaigns."
            )
            st.session_state.cik_value = cik_value
            if st.button("Run Crowdfunding By CIK"):
                st.session_state.run_cik = True

    # Page Output
    if page == "Crowdfunding Live Feed":
        st.header("Crowdfunding Live Feed")
        st.write(
            "Displays the latest crowdfunding campaigns from a live feed. "
            "Includes details such as company name, form type, offering amount, and more."
        )
        if st.session_state.run_rss:
            # The default is set to page=5 in the code. The user cannot change it.
            df_rss = fetch_crowdfunding_rss(st.session_state.rss_page)
            if df_rss.empty:
                st.error("No data found for that feed page.")
            else:
                st.dataframe(df_rss, use_container_width=True)
        else:
            st.info("Click 'Run Crowdfunding Live Feed' to fetch the live feed.")
    
    elif page == "Crowdfunding Search":
        st.header("Crowdfunding Search")
        st.write(
            "Search for crowdfunding campaigns by company or campaign name. "
            "The table below shows all matching results."
        )
        if st.session_state.run_search:
            df_search = fetch_crowdfunding_search(st.session_state.search_name)
            if df_search.empty:
                st.error("No crowdfunding campaigns found for that name.")
            else:
                st.dataframe(df_search, use_container_width=True)
        else:
            st.info("Enter a name in the sidebar and click 'Run Crowdfunding Search'.")
    
    else:  # Crowdfunding By CIK
        st.header("Crowdfunding By CIK")
        st.write(
            "Shows all crowdfunding campaigns for a company identified by its CIK. "
            "The table below contains details for each campaign."
        )
        if st.session_state.run_cik:
            df_cik = fetch_crowdfunding_by_cik(st.session_state.cik_value)
            if df_cik.empty:
                st.error("No crowdfunding campaigns found for that CIK.")
            else:
                st.dataframe(df_cik, use_container_width=True)
        else:
            st.info("Enter a CIK in the sidebar and click 'Run Crowdfunding By CIK'.")

if __name__ == "__main__":
    main()


hide_streamlit_style = """
<style>
#MainMenu {visibility: hidden;}
footer {visibility: hidden;}
</style>
"""
st.markdown(hide_streamlit_style, unsafe_allow_html=True)