# set path
import glob, os, sys; 
sys.path.append('../utils')

#import needed libraries
import seaborn as sns
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
import streamlit as st
from utils.vulnerability_classifier import load_vulnerabilityClassifier, vulnerability_classification
import logging
logger = logging.getLogger(__name__)
from utils.config import get_classifier_params
from utils.preprocessing import paraLengthCheck
from io import BytesIO
import xlsxwriter
import plotly.express as px
from utils.vulnerability_classifier import label_dict



# Declare all the necessary variables
classifier_identifier = 'vulnerability'
params  = get_classifier_params(classifier_identifier)

@st.cache_data
def to_excel(df,sectorlist):
    len_df = len(df)
    output = BytesIO()
    writer = pd.ExcelWriter(output, engine='xlsxwriter')
    df.to_excel(writer, index=False, sheet_name='Sheet1')
    workbook = writer.book
    worksheet = writer.sheets['Sheet1']
    worksheet.data_validation('S2:S{}'.format(len_df), 
                              {'validate': 'list', 
                               'source': ['No', 'Yes', 'Discard']})
    worksheet.data_validation('X2:X{}'.format(len_df), 
                              {'validate': 'list', 
                               'source': sectorlist + ['Blank']})
    worksheet.data_validation('T2:T{}'.format(len_df), 
                              {'validate': 'list', 
                               'source': sectorlist + ['Blank']})
    worksheet.data_validation('U2:U{}'.format(len_df), 
                              {'validate': 'list', 
                               'source': sectorlist + ['Blank']})                               
    worksheet.data_validation('V2:V{}'.format(len_df), 
                              {'validate': 'list', 
                               'source': sectorlist + ['Blank']})
    worksheet.data_validation('W2:U{}'.format(len_df), 
                              {'validate': 'list', 
                               'source': sectorlist + ['Blank']})                            
    writer.save()
    processed_data = output.getvalue()
    return processed_data

def app():

    ### Main app code ###
    with st.container():

            # If a document has been processed                   
            if 'key0' in st.session_state:

                # Run vulnerability classifier
                df = st.session_state.key0
                classifier = load_vulnerabilityClassifier(classifier_name=params['model_name'])
                st.session_state['{}_classifier'.format(classifier_identifier)] = classifier

    
                # Get the predictions    
                df = vulnerability_classification(haystack_doc=df,
                                            threshold= params['threshold'])


                # Store df in session state with key1
                st.session_state.key1 = df


def vulnerability_display(): 
    
    # Get the vulnerability df
    df = st.session_state['key1']

    # Filter the dataframe to only show the paragraphs with references
    df_filtered = df[df['Vulnerability Label'].apply(lambda x: len(x) > 0 and 'Other' not in x)]

    # Rename column 
    df_filtered.rename(columns={'Vulnerability Label': 'Group(s)'}, inplace=True)

    # Header
    st.subheader("Explore references to vulnerable groups:")
    
    col1, col2 = st.columns([1,1])
    
    with col1:
        

        # Text 
        num_paragraphs = len(df['Vulnerability Label'])
        num_references = len(df_filtered['Group(s)'])
       
        st.markdown(f"""<div style="text-align: justify;"> The document contains a
                total of <span style="color: red;">{num_paragraphs}</span> paragraphs.
                We identified <span style="color: red;">{num_references}</span>
                references to groups in vulnerable situations.</div>
                <br>
                In the chart on the right you can see how often each group has been referenced.
                For a more detailed view in the text, see the paragraphs and 
                their respective labels in the table below.</div>""", unsafe_allow_html=True)

    with col2:
        
        ### Bar chart
                    
        # # Create a df that stores all the labels
        df_labels = pd.DataFrame(list(label_dict.items()), columns=['Label ID', 'Label'])

        # Count how often each label appears in the "Group identified" column
        group_counts = {}

        # Iterate through each sublist
        for index, row in df_filtered.iterrows():
            
            # Iterate through each group in the sublist
            for sublist in row['Group(s)']:
                
                # Update the count in the dictionary
                group_counts[sublist] = group_counts.get(sublist, 0) + 1

        # Create a new dataframe from group_counts
        df_label_count = pd.DataFrame(list(group_counts.items()), columns=['Label', 'Count'])

        # Merge the label counts with the df_label DataFrame
        df_label_count = df_labels.merge(df_label_count, on='Label', how='left')

        # Exclude the "Other" group
        df_bar_chart = df_label_count[df_label_count['Label'] != 'Other']
        
        # Bar chart
        fig = px.bar(df_bar_chart, 
                     x='Label', 
                     y='Count', 
                     title='How many references have been found for each group?',
                     labels={'Count': 'Frequency'})

        #Show plot
        st.plotly_chart(fig, use_container_width=True)