app.py

import streamlit as st
import xml.etree.ElementTree as ET
import pandas as pd
from io import StringIO
import folium
from streamlit_folium import st_folium
import unicodedata

# -------------------------------
# Authority Lists as XML Strings
# -------------------------------

materials_xml = """<?xml version="1.0" encoding="UTF-8"?>
<materials>
    <material id="LAPIS">
        <name>Lapis</name>
        <name_en>Stone</name_en>
        <description>Stone used as a durable medium for inscriptions and engravings.</description>
    </material>
    <material id="ARGENTUM">
        <name>Argentum</name>
        <name_en>Silver</name_en>
        <description>Silver used in inscriptions, often for its lustrous appearance and value.</description>
    </material>
    <material id="PLUMBUM">
        <name>Plumbum</name>
        <name_en>Lead</name_en>
        <description>Lead utilized in inscriptions, valued for its malleability and ease of engraving.</description>
    </material>
    <material id="OPUS_FIGLINAE">
        <name>Opus Figlinae</name>
        <name_en>Pottery</name_en>
        <description>Pottery used as a medium for inscriptions, typically in the form of ceramic artifacts.</description>
    </material>
</materials>
"""

places_xml = """<?xml version="1.0" encoding="UTF-8"?>
<places>
    <place id="VIZE">
        <name>Vize</name>
        <geonamesLink>https://www.geonames.org/738154/vize.html</geonamesLink>
        <pleiadesLink>https://pleiades.stoa.org/places/511190</pleiadesLink>
        <latitude>40.6545</latitude>
        <longitude>28.4078</longitude>
        <description>Ancient city located in modern-day Turkey.</description>
    </place>
    <place id="PHILIPPI">
        <name>Philippi</name>
        <geonamesLink>https://www.geonames.org/734652/filippoi-philippi.html</geonamesLink>
        <pleiadesLink>https://pleiades.stoa.org/places/501482</pleiadesLink>
        <latitude>40.5044</latitude>
        <longitude>24.9722</longitude>
        <description>Ancient city in Macedonia, founded by Philip II of Macedon.</description>
    </place>
    <place id="AUGUSTA_TRAIANA">
        <name>Augusta Traiana</name>
        <geonamesLink>https://www.geonames.org/maps/google_42.4333_25.65.html</geonamesLink>
        <pleiadesLink>https://pleiades.stoa.org/places/216731</pleiadesLink>
        <latitude>42.4259</latitude>
        <longitude>25.6272</longitude>
        <description>Ancient Roman city, present-day Stara Zagora in Bulgaria.</description>
    </place>
    <place id="DYRRACHIUM">
        <name>Dyrrachium</name>
        <geonamesLink>https://www.geonames.org/3185728/durres.html</geonamesLink>
        <pleiadesLink>https://pleiades.stoa.org/places/481818</pleiadesLink>
        <latitude>41.3231</latitude>
        <longitude>19.4417</longitude>
        <description>Ancient city on the Adriatic coast, present-day Durrës in Albania.</description>
    </place>
    <place id="ANTISARA">
        <name>Antisara</name>
        <geonamesLink>https://www.geonames.org/736079/akra-kalamitsa.html</geonamesLink>
        <pleiadesLink>https://pleiades.stoa.org/places/501351</pleiadesLink>
        <latitude>39.5000</latitude>
        <longitude>20.0000</longitude>
        <description>Ancient settlement, exact modern location TBD.</description>
    </place>
    <place id="MACEDONIA">
        <name>Macedonia</name>
        <geonamesLink>-</geonamesLink>
        <pleiadesLink>-</pleiadesLink>
        <latitude>40.0000</latitude>
        <longitude>22.0000</longitude>
        <description>Historical region in Southeast Europe, encompassing parts of modern Greece, North Macedonia, and Bulgaria.</description>
    </place>        
</places>
"""

titles_xml = """<?xml version="1.0" encoding="UTF-8"?>    
<emperorTitles>
    <title id="IMPERATOR">
        <name>Imperator</name>
        <name_gr>Αυτοκράτορας</name_gr>
        <abbreviation>Imp.</abbreviation>
        <description>A title granted to a victorious general, later adopted as a formal title by Roman emperors.</description>
    </title>
    <title id="CAESAR">
        <name>Caesar</name>
        <name_gr>Καῖσαρ</name_gr>
        <abbreviation>Caes.</abbreviation>
        <description>A title used by Roman emperors, originally the family name of Julius Caesar.</description>
    </title>
    <title id="AUGUSTUS">
        <name>Augustus</name>
        <name_gr>-</name_gr>
        <abbreviation>Aug.</abbreviation>
        <description>The first Roman emperor's title, signifying revered or majestic status.</description>
    </title>
</emperorTitles>
"""

# -------------------------------
# Parse Authority Lists
# -------------------------------

def parse_materials(xml_string):
    materials = {}
    root = ET.fromstring(xml_string)
    for material in root.findall('material'):
        material_id = material.get('id')
        materials[material_id] = {
            'Name': material.find('name').text,
            'Name_EN': material.find('name_en').text,
            'Description': material.find('description').text
        }
    return materials

def parse_places(xml_string):
    places = {}
    root = ET.fromstring(xml_string)
    for place in root.findall('place'):
        place_id = place.get('id')
        places[place_id] = {
            'Name': place.find('name').text,
            'GeoNames Link': place.find('geonamesLink').text,
            'Pleiades Link': place.find('pleiadesLink').text,
            'Latitude': float(place.find('latitude').text),
            'Longitude': float(place.find('longitude').text),
            'Description': place.find('description').text
        }
    return places

def parse_titles(xml_string):
    titles = {}
    root = ET.fromstring(xml_string)
    for title in root.findall('title'):
        title_id = title.get('id')
        titles[title_id] = {
            'Name': title.find('name').text,
            'Name_GR': title.find('name_gr').text,
            'Abbreviation': title.find('abbreviation').text,
            'Description': title.find('description').text
        }
    return titles

# Load authority data
materials_dict = parse_materials(materials_xml)
places_dict = parse_places(places_xml)
titles_dict = parse_titles(titles_xml)

# -------------------------------
# Function to Find Place ID by Name (Case-Insensitive)
# -------------------------------

def find_place_id_by_name(name):
    """
    Finds the place ID by matching the place name (case-insensitive).
    Returns the place ID if found, else returns the original name.
    """
    for id_, place in places_dict.items():
        if place['Name'].strip().lower() == name.strip().lower():
            return id_
    return name  # Return the original name if no match is found

# -------------------------------
# Function to Parse Inscriptions
# -------------------------------

def parse_inscriptions(xml_content):
    tree = ET.ElementTree(ET.fromstring(xml_content))
    root = tree.getroot()
    inscriptions = []
    for inscription in root.findall('inscription'):
        n = inscription.get('n')
        publisher = inscription.find('Publisher').text if inscription.find('Publisher') is not None else "N/A"
        
        # Handle Origin with or without 'ref' attribute
        origin_elem = inscription.find('Origin')
        if origin_elem is not None:
            origin_ref = origin_elem.get('ref')
            if origin_ref:
                origin_id = origin_ref
            else:
                origin_text = origin_elem.text.strip() if origin_elem.text else ""
                origin_id = find_place_id_by_name(origin_text)
        else:
            origin_id = "N/A"
        
        origin = places_dict.get(origin_id, {}).get('Name', origin_id)
        origin_geonames_link = places_dict.get(origin_id, {}).get('GeoNames Link', "#")
        origin_pleiades_link = places_dict.get(origin_id, {}).get('Pleiades Link', "#")
        
        # Handle Material with or without 'ref' attribute
        material_elem = inscription.find('Material')
        if material_elem is not None:
            material_ref = material_elem.get('ref')
            if material_ref:
                material_id = material_ref
            else:
                material_text = material_elem.text.strip() if material_elem.text else ""
                # Attempt to find material ID by matching the name_en
                material_id = None
                for id_, material in materials_dict.items():
                    if material['Name_EN'].strip().lower() == material_text.strip().lower():
                        material_id = id_
                        break
                if not material_id:
                    material_id = material_text  # Use the text if no match found
        else:
            material_id = "N/A"
        
        material = materials_dict.get(material_id, {}).get('Name_EN', material_id)
        
        language = inscription.find('Language').text if inscription.find('Language') is not None else "N/A"
        
        text = "".join(inscription.find('Text').itertext()).strip() if inscription.find('Text') is not None else "N/A"
        
        dating = inscription.find('Dating').text if inscription.find('Dating') is not None else "N/A"
        images = inscription.find('Images').text if inscription.find('Images') is not None else "N/A"
        encoder = inscription.find('Encoder').text if inscription.find('Encoder') is not None else "N/A"
        
        category_terms = [term.text for term in inscription.findall('Category/term')]
        
        inscriptions.append({
            'Number': n,
            'Publisher': publisher,
            'Origin_ID': origin_id,
            'Origin': origin,
            'GeoNames Link': origin_geonames_link,
            'Pleiades Link': origin_pleiades_link,
            'Material_ID': material_id,
            'Material': material,
            'Language': language,
            'Text': text,
            'Dating': dating,
            'Images': images,
            'Encoder': encoder,
            'Categories': ", ".join(category_terms)
        })
    return pd.DataFrame(inscriptions)

# -------------------------------
# Functions to Render Editions
# -------------------------------

def render_diplomatic(text_element):
    lines = []
    current_line = ""
    for elem in text_element.iter():
        if elem.tag == "lb":
            if current_line:
                lines.append(current_line.strip())
            current_line = ""  # Start a new line
            line_number = elem.get("n", "")
            current_line += f"{line_number} " if line_number else ""
        elif elem.tag == "supplied":
            # Process nested <expan> elements and concatenate abbreviations
            supplied_content = ""
            for sub_elem in elem.findall(".//expan"):  # Nested <expan> elements
                abbr_elem = sub_elem.find("abbr")
                if abbr_elem is not None and abbr_elem.text:
                    supplied_content += abbr_elem.text.upper()
            current_line += f"[{supplied_content}]"
        elif elem.tag == "expan":
            # Use only the abbreviation part
            abbr_elem = elem.find("abbr")
            if abbr_elem is not None and abbr_elem.text:
                current_line += abbr_elem.text.upper()
        elif elem.tag == "g" and elem.get("type") == "leaf":
            current_line += " LEAF "
        elif elem.tag == "title" and elem.get("type") == "emperor":
            # Include title abbreviations
            title_ref = elem.get('ref')
            title_info = titles_dict.get(title_ref, {})
            abbreviation = title_info.get('Abbreviation', '')
            current_line += abbreviation
        elif elem.text and elem.tag not in ["supplied", "expan", "g", "title"]:
            current_line += elem.text.upper()
    if current_line:
        lines.append(current_line.strip())  # Append the last line
    return "\n".join(lines)

def render_editor(text_element):
    lines = []
    current_line = ""
    for elem in text_element.iter():
        if elem.tag == "lb":
            if current_line:
                lines.append(current_line.strip())
            current_line = ""  # Start a new line
            line_number = elem.get("n", "")
            current_line += f"{line_number} " if line_number else ""
        elif elem.tag == "supplied":
            # Process nested <expan> elements with abbreviation and expansion
            supplied_content = []
            for sub_elem in elem.findall(".//expan"):  # Nested <expan> elements
                abbr_elem = sub_elem.find("abbr")
                ex_elem = sub_elem.find("ex")
                abbr = abbr_elem.text if abbr_elem is not None and abbr_elem.text else ""
                ex = ex_elem.text if ex_elem is not None and ex_elem.text else ""
                supplied_content.append(f"{abbr}({ex})")
            current_line += " ".join(supplied_content)
        elif elem.tag == "expan":
            # Render abbreviation and expansion
            abbr_elem = elem.find("abbr")
            ex_elem = elem.find("ex")
            abbr = abbr_elem.text if abbr_elem is not None and abbr_elem.text else ""
            ex = ex_elem.text if ex_elem is not None and ex_elem.text else ""
            current_line += f"{abbr}({ex})"
        elif elem.tag == "g" and elem.get("type") == "leaf":
            current_line += " ((leaf)) "
        elif elem.tag == "title" and elem.get("type") == "emperor":
            # Render title abbreviation and name
            title_ref = elem.get('ref')
            title_info = titles_dict.get(title_ref, {})
            abbreviation = title_info.get('Abbreviation', '')
            name_gr = title_info.get('Name_GR', '')
            current_line += f"{abbreviation} {name_gr}"
        elif elem.text and elem.tag not in ["supplied", "expan", "g", "title"]:
            current_line += elem.text
    if current_line:
        lines.append(current_line.strip())  # Append the last line
    return "\n".join(lines)

# -------------------------------
# Streamlit App Layout
# -------------------------------

st.set_page_config(page_title="Epigraphic XML Viewer", layout="wide")
st.title("Epigraphic XML Viewer: Diplomatic and Editor Editions")

# -------------------------------
# Sidebar - Project Information
# -------------------------------
with st.sidebar:
    st.image("imgs/logo_inscripta.jpg", use_container_width=True, caption="Latin and Ancient Greek Inscriptions")
    st.header("Project Information")
    st.markdown("""
    **Epigraphic Database Viewer** is a tool designed to visualize and analyze ancient inscriptions.
    
    **Features**:
    - Upload and view XML inscriptions data.
    - Explore inscriptions in various formats.
    - Visualize geographical origins on an interactive map.
    
    **Authority Lists**:
    - **Materials**: Details about materials used in inscriptions.
    - **Places**: Geographical data and descriptions.
    - **Emperor Titles**: Titles and abbreviations used in inscriptions.
    
    **Developed by**: Kristiyan Simeonov, Sofia University
    """)

# -------------------------------
# File uploader for Inscriptions XML
# -------------------------------
uploaded_file = st.file_uploader("Upload Inscriptions XML File", type=["xml"])

if uploaded_file:
    st.success("File uploaded successfully!")
    # Read uploaded XML content
    inscriptions_content = uploaded_file.getvalue().decode("utf-8")
else:
    st.info("No file uploaded. Using default sample XML data.")
    # Default XML data (as provided by the user)
    inscriptions_content = """<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE epiData SYSTEM "epiData.dtd"> <!--<!DOCTYPE epiData SYSTEM "https://raw.githubusercontent.com/Bestroi150/EpiDataBase/refs/heads/main/epiData.dtd">-->

<epiData>
  <inscription n="1">
    <Publisher>EDCS</Publisher>
    <Origin ref="VIZE">Vize</Origin>
    <Origin-Geonames-Link>https://www.geonames.org/738154/vize.html</Origin-Geonames-Link>
    <Origin-Pleiades-Link>https://pleiades.stoa.org/places/511190</Origin-Pleiades-Link>
    <Institution ID="AE 1951, 00257"></Institution>
    <Category>
      <term>Augusti/Augustae</term>
      <term>ordo senatorius</term>
      <term>tituli sacri</term>
      <term>tria nomina</term>
      <term>viri</term>
    </Category>
    <Material ref="LAPIS">lapis</Material>
    <Language>Greek</Language>
    <Text>
      <lb n="1"/>ἀγαθῇ τύχῃ
      <lb n="2"/>ὑπὲρ τῆς τοῦ <title type="emperor" ref="IMPERATOR">Αὐτοκράτορος</title>
      <lb n="3" break="no"/><expan><abbr>T</abbr><ex>ίτου</ex></expan> <expan>Αἰλ<ex>ίου</ex></expan> <persName type="emperor">Ἁδριανοῦ Ἀντωνείνου</persName> <title type="emperor">Καί
      <lb n="4"/>σαρος</title><expan>Σεβ<ex>αστοῦ</ex></expan> Εὐσεβοῦς καὶ Οὐήρου Καίσαρ 
      <lb n="5"/>ος νείκης τε καὶ αἰωνίου διαμονῆς καὶ τοῦ
      <lb n="6"/>σύμπαντος αὐτῶν οἴκου ἱερᾶς τε
      <lb n="7"/>συνκλήτου καὶ δήμου Ῥωμαίων
      <lb n="8" break="no"/>ἡγεμονεύοντος <place type="province">ἐπαρχείας Θρᾴκης</place>
      <lb n="9"/><persName type="official"> <expan>Γ<ex>αΐου</ex></expan> Ἰουλίου <expan>Κομ<ex>μ</ex></expan>όδου</persName> <title type="official">πρεσβ<ex>ευτοῦ</ex></title> <expan>Σεβ<ex>αστοῦ</ex></expan>
      <lb n="10"/>ἀντιστρατήγου ἡ <place type="city">πόλις Βιζυηνῶν</place>
      <lb n="11"/>κατεσκεύασεν τοὺς πυργοὺς διὰ
      <lb n="12" break="no"/>ἐπιμελητῶν Φίρμου Αυλουπορε
      <lb n="13"/>ος καὶ Αυλουκενθου Δυτουκενθου
      <lb n="14"/>καὶ Ραζδου Ὑακίνθου εὐτυχεῖτε
    </Text>
    <Dating>155 to 155</Dating>
    <Images>https://db.edcs.eu/epigr/ae/ae1951/ae1951-74.pdf</Images>
    <Encoder>Admin</Encoder>
  </inscription>
  
</epiData>
"""

# -------------------------------
# Parse Inscriptions
# -------------------------------

try:
    df = parse_inscriptions(inscriptions_content)
except ET.ParseError as e:
    st.error(f"Error parsing XML: {e}")
    st.stop()

# -------------------------------
# Tabs for Different Views
# -------------------------------
tabs = st.tabs(["Raw XML", "DataFrame", "Diplomatic Edition", "Editor Edition", "Visualization", "Authority Connections"])

# -------------------------------
# Raw XML Tab
# -------------------------------
with tabs[0]:
    st.subheader("Raw XML Content")
    st.code(inscriptions_content, language="xml")

# -------------------------------
# DataFrame Tab
# -------------------------------
with tabs[1]:
    st.subheader("Inscriptions Data")
    st.dataframe(df)

# -------------------------------
# Diplomatic Edition Tab
# -------------------------------

import streamlit as st
import xml.etree.ElementTree as ET
import unicodedata

# Function to remove diacritics from text
def remove_diacritics(text):
    """
    Removes diacritics from the input text.
    """
    normalized_text = unicodedata.normalize('NFD', text)
    return ''.join(
        char for char in normalized_text
        if unicodedata.category(char) != 'Mn'
    )

# Function to process the Text element
def render_diplomatic(text_elem):
    """
    Transforms the XML Text element into uppercase Greek text without diacritics and spaces,
    with line breaks at <lb> tags. Handles <expan> tags by including only the <abbr> text.
    """
    lines = []
    current_line = []
    
    # Define a helper function to process elements recursively
    def process_element(elem):
        if elem.tag == 'lb':
            finalize_current_line()
            if elem.tail:
                # After <lb>, the tail text is the start of the new line
                current_line.append(elem.tail)
        elif elem.tag == 'expan':
            abbr_elem = elem.find('abbr')
            if abbr_elem is not None and abbr_elem.text:
                current_line.append(abbr_elem.text)
            # Do not process <ex> or any other children within <expan>
            if elem.tail:
                current_line.append(elem.tail)
        else:
            if elem.text:
                current_line.append(elem.text)
            # Recursively process child elements
            for child in elem:
                process_element(child)
            if elem.tail:
                current_line.append(elem.tail)
    
    def finalize_current_line():
        """
        Finalizes the current line by removing diacritics, spaces, converting to uppercase,
        and appending it to the lines list.
        """
        nonlocal current_line
        line_text = ''.join(current_line).strip()
        if line_text:
            # Remove diacritics and spaces, then convert to uppercase
            line_text = remove_diacritics(line_text).replace(' ', '').upper()
            lines.append(line_text)
        current_line = []
    
    # Start processing from the root text element
    process_element(text_elem)
    
    # Finalize the last line if any
    if current_line:
        finalize_current_line()
    
    # Join all lines with newline characters
    return '\n'.join(lines)

# Streamlit Application
# Ensure that 'tabs' and 'df' are properly defined in your Streamlit app context
with tabs[2]:
    st.subheader("Diplomatic Edition")
    
    # Select Inscription
    inscription_numbers = df['Number'].tolist()
    selected_inscription_num = st.selectbox("Select Inscription Number", inscription_numbers)
    selected_inscription = df[df['Number'] == selected_inscription_num].iloc[0]

    # Parse the selected inscription's XML to get the Text element
    try:
        tree = ET.ElementTree(ET.fromstring(inscriptions_content))
        root = tree.getroot()
        inscription_elem = root.find(f".//inscription[@n='{selected_inscription_num}']")
        text_element = inscription_elem.find("Text") if inscription_elem is not None else None
    except ET.ParseError:
        st.error("Failed to parse the XML content. Please check the XML structure.")
        text_element = None

    if text_element is not None:
        diplomatic_text = render_diplomatic(text_element)
        st.code(diplomatic_text, language="plaintext")
    else:
        st.warning("No text found for the selected inscription.")


# -------------------------------
# Editor Edition Tab
# -------------------------------

def render_editor(text_element):
    """
    Processes the Text XML element and converts it to plaintext.
    """
    def process_element(elem):
        result = elem.text if elem.text else ''

        for child in elem:
            if child.tag == 'lb':
                # Line break; add a newline
                result += '\n'
            elif child.tag == 'expan':
                # Handle expansions, e.g., <expan><abbr>T</abbr><ex>ίτου</ex></expan> → T(ίτου)
                abbr = child.find('abbr')
                ex = child.find('ex')
                if abbr is not None and ex is not None:
                    result += f"{abbr.text}({ex.text})"
                else:
                    # If structure is unexpected, process children recursively
                    result += process_element(child)
            elif child.tag == 'abbr':
                # Abbreviation; add text without special formatting
                result += child.text if child.text else ''
            elif child.tag == 'ex':
                # Expansion; add text within parentheses
                result += f"({child.text})" if child.text else ''
            elif child.tag in ['persName', 'place', 'title']:
                # Names and titles; add text without tags
                # If they contain nested elements, process them
                result += process_element(child)
            else:
                # For any other tags, process their children
                result += process_element(child)
            
            if child.tail:
                result += child.tail

        return result

    return process_element(text_element).strip()

with tabs[3]:
    st.subheader("Editor Edition")
    
    # Select Inscription
    inscription_numbers = df['Number'].tolist()
    selected_inscription_num = st.selectbox("Select Inscription Number", inscription_numbers, key='editor_select')
    
    # Parse the entire XML to find the selected inscription
    try:
        # Parse the entire XML content
        tree = ET.ElementTree(ET.fromstring(inscriptions_content))
        root = tree.getroot()
        
        # Locate the inscription element with the matching number
        inscription_elem = root.find(f".//inscription[@n='{selected_inscription_num}']")
        
        # If the root itself is the inscription
        if inscription_elem is None and root.tag == 'inscription' and root.attrib.get('n') == str(selected_inscription_num):
            inscription_elem = root
        
        text_element = inscription_elem.find("Text") if inscription_elem is not None else None

        if text_element is not None:
            editor_text = render_editor(text_element)
            st.code(editor_text, language="plaintext")
        else:
            st.warning("No text found for the selected inscription.")
    except ET.ParseError as e:
        st.error(f"Error parsing XML: {e}")
    except Exception as e:
        st.error(f"An unexpected error occurred: {e}")

# -------------------------------
# Visualization Tab
# -------------------------------
with tabs[4]:
    st.subheader("Visualization")

    # Extract categories
    all_categories = set()
    for categories in df['Categories']:
        for cat in categories.split(", "):
            all_categories.add(cat)

    # Category filtering
    selected_categories = st.multiselect("Filter by Category", sorted(all_categories))

    if selected_categories:
        filtered_df = df[df['Categories'].apply(lambda x: any(cat in x.split(", ") for cat in selected_categories))]
    else:
        filtered_df = df.copy()

    # Merge with places to get coordinates
    def get_coordinates(origin_id):
        place = places_dict.get(origin_id, {})
        return place.get('Latitude'), place.get('Longitude')

    # Apply the function to get Latitude and Longitude
    filtered_df['Latitude'], filtered_df['Longitude'] = zip(*filtered_df['Origin_ID'].apply(get_coordinates))

    # Drop entries without coordinates
    map_df = filtered_df.dropna(subset=['Latitude', 'Longitude'])

    if not map_df.empty:
        # Create a Folium map centered around the average coordinates
        avg_lat = map_df['Latitude'].mean()
        avg_lon = map_df['Longitude'].mean()
        folium_map = folium.Map(location=[avg_lat, avg_lon], zoom_start=6)

        # Add markers to the map
        for _, row in map_df.iterrows():
            popup_content = f"""
            <b>Inscription Number:</b> {row['Number']}<br>
            <b>Publisher:</b> {row['Publisher']}<br>
            <b>Material:</b> {row['Material']}<br>
            <b>Language:</b> {row['Language']}<br>
            <b>Dating:</b> {row['Dating']}<br>
            <b>Encoder:</b> {row['Encoder']}<br>
            <b>Categories:</b> {row['Categories']}<br>
            <b>Text:</b> {row['Text']}<br>
            """
            if row['Images'] and row['Images'] != "N/A":
                popup_content += f'<a href="{row["Images"]}" target="_blank">View Images</a><br>'
            folium.Marker(
                location=[row['Latitude'], row['Longitude']],
                popup=folium.Popup(popup_content, max_width=300),
                tooltip=f"Inscription {row['Number']}"
            ).add_to(folium_map)

        # Display the Folium map using streamlit_folium
        st_folium(folium_map, width=700, height=500)
    else:
        st.write("No inscriptions to display on the map based on the selected filters.")

    st.dataframe(filtered_df)

    # Detailed View
    for _, row in filtered_df.iterrows():
        with st.expander(f"Inscription {row['Number']}"):
            st.markdown(f"**Publisher**: {row['Publisher']}")
            st.markdown(f"**Origin**: {row['Origin']} ([GeoNames Link]({row['GeoNames Link']}), [Pleiades Link]({row['Pleiades Link']}))")
            st.markdown(f"**Material**: {row['Material']} - {materials_dict.get(row['Material_ID'], {}).get('Description', '')}")
            st.markdown(f"**Language**: {row['Language']}")
            st.markdown(f"**Dating**: {row['Dating']}")
            st.markdown(f"**Encoder**: {row['Encoder']}")
            st.markdown(f"**Categories**: {row['Categories']}")
            st.markdown(f"**Text**:\n\n{row['Text']}")
            if row['Images'] and row['Images'] != "N/A":
                st.markdown(f"[View Images]({row['Images']})")
            # Display material description
            material_desc = materials_dict.get(row['Material_ID'], {}).get('Description', "No description available.")
            st.markdown(f"**Material Description**: {material_desc}")
            # Display place description
            place_desc = places_dict.get(row['Origin_ID'], {}).get('Description', "No description available.")
            st.markdown(f"**Place Description**: {place_desc}")

with tabs[5]:
    st.subheader("Authority Connections")
    
    # Define Authority Types
    authority_types = ["Material", "Place"]  # Extend this list if you include Titles in the future
    
    # Select Authority Type
    selected_authority_type = st.selectbox("Select Authority Type", authority_types)
    
    # Based on selection, provide the corresponding options
    if selected_authority_type == "Material":
        # List all materials from materials_dict
        material_names = [material['Name_EN'] for material in materials_dict.values()]
        selected_material = st.selectbox("Select Material", sorted(material_names))
        
        # Find the material ID based on the selected name
        material_id = None
        for id_, material in materials_dict.items():
            if material['Name_EN'] == selected_material:
                material_id = id_
                break
        
        if material_id:
            # Filter inscriptions that reference this material
            connected_inscriptions = df[df['Material_ID'] == material_id]
            
            st.markdown(f"### Inscriptions using **{selected_material}**")
            st.write(f"**Total Inscriptions:** {len(connected_inscriptions)}")
            
            if not connected_inscriptions.empty:
                # Display inscriptions in a table
                st.dataframe(connected_inscriptions[['Number', 'Publisher', 'Origin', 'Language', 'Dating', 'Encoder']])
                
                # Optional: Visualization - Number of Inscriptions per Year (Dating)
                st.markdown("#### Inscriptions Over Time")
                # Assuming 'Dating' is in a format that can be processed (e.g., single year or range)
                # For simplicity, we'll extract the starting year
                def extract_start_year(dating):
                    if isinstance(dating, str):
                        parts = dating.split('to')
                        try:
                            return int(parts[0].strip())
                        except:
                            return None
                    return None
                
                connected_inscriptions['Start_Year'] = connected_inscriptions['Dating'].apply(extract_start_year)
                year_counts = connected_inscriptions['Start_Year'].dropna().astype(int).value_counts().sort_index()
                
                fig, ax = plt.subplots()
                ax.bar(year_counts.index, year_counts.values, color='skyblue')
                ax.set_xlabel('Year')
                ax.set_ylabel('Number of Inscriptions')
                ax.set_title(f'Number of Inscriptions Using {selected_material} Over Time')
                st.pyplot(fig)
                
                # Optional: Network Graph
                st.markdown("#### Network Graph of Inscriptions and Materials")
                G = nx.Graph()

                # Add nodes
                G.add_node(selected_material, type='Material')
                for _, row in connected_inscriptions.iterrows():
                    inscription_node = f"Inscription {row['Number']}"
                    G.add_node(inscription_node, type='Inscription')
                    G.add_edge(selected_material, inscription_node)

                # Define node colors based on type
                color_map = []
                for node in G:
                    if G.nodes[node]['type'] == 'Material':
                        color_map.append('lightblue')
                    else:
                        color_map.append('lightgreen')

                # Draw the graph
                plt.figure(figsize=(8, 6))
                nx.draw(G, with_labels=True, node_color=color_map, node_size=1500, font_size=10, font_weight='bold')
                st.pyplot(plt)
                plt.close()
                
            else:
                st.info("No inscriptions found for the selected material.")
    
    elif selected_authority_type == "Place":
        # List all places from places_dict
        place_names = [place['Name'] for place in places_dict.values()]
        selected_place = st.selectbox("Select Place", sorted(place_names))
        
        # Find the place ID based on the selected name
        place_id = None
        for id_, place in places_dict.items():
            if place['Name'] == selected_place:
                place_id = id_
                break
        
        if place_id:
            # Filter inscriptions that originate from this place
            connected_inscriptions = df[df['Origin_ID'] == place_id]
            
            st.markdown(f"### Inscriptions from **{selected_place}**")
            st.write(f"**Total Inscriptions:** {len(connected_inscriptions)}")
            
            if not connected_inscriptions.empty:
                # Display inscriptions in a table
                st.dataframe(connected_inscriptions[['Number', 'Publisher', 'Material', 'Language', 'Dating', 'Encoder']])
                
                # Optional: Visualization - Inscriptions Geographical Distribution
                st.markdown("#### Geographical Distribution of Inscriptions")
                map_df = connected_inscriptions[['Latitude', 'Longitude', 'Number']]
                map_df = map_df.dropna(subset=['Latitude', 'Longitude'])
                
                if not map_df.empty:
                    # Create a Folium map centered on the selected place
                    selected_place_coords = [places_dict[place_id]['Latitude'], places_dict[place_id]['Longitude']]
                    folium_map = folium.Map(location=selected_place_coords, zoom_start=8)
                    
                    for _, row in map_df.iterrows():
                        folium.Marker(
                            location=[row['Latitude'], row['Longitude']],
                            popup=f"Inscription {row['Number']}"
                        ).add_to(folium_map)
                    
                    st_folium(folium_map, width=700, height=500)
                else:
                    st.info("No geographical data available for these inscriptions.")
                
                # Optional: Network Graph
                st.markdown("#### Network Graph of Inscriptions and Places")
                G = nx.Graph()

                # Add nodes
                G.add_node(selected_place, type='Place')
                for _, row in connected_inscriptions.iterrows():
                    inscription_node = f"Inscription {row['Number']}"
                    G.add_node(inscription_node, type='Inscription')
                    G.add_edge(selected_place, inscription_node)

                # Define node colors based on type
                color_map = []
                for node in G:
                    if G.nodes[node]['type'] == 'Place':
                        color_map.append('salmon')
                    else:
                        color_map.append('lightgreen')

                # Draw the graph
                plt.figure(figsize=(8, 6))
                nx.draw(G, with_labels=True, node_color=color_map, node_size=1500, font_size=10, font_weight='bold')
                st.pyplot(plt)
                plt.close()
                
            else:
                st.info("No inscriptions found for the selected place.")


# -------------------------------
# Footer
# -------------------------------
st.markdown("""
---
**© 2024 InscriptaNET**
""")