app.py

import streamlit as st
from calculators.programmer_calc import programmer_calculator
from calculators.scientific_calc import scientific_calculator
from converters.date_converter import date_calculator
from converters.currency_converter import currency_converter
from converters.unit_converters import (
    volume_converter,
    length_converter,
    mass_converter,
    temperature_converter,
    energy_converter,
    area_converter,
    time_converter,
    data_converter,
    pressure_converter
)

# Set page configuration
st.set_page_config(
    page_title="Multi-Utility Calculator",
    page_icon="🧮",
    layout="wide",
    initial_sidebar_state="expanded"
)

# Apply custom CSS
st.markdown("""
<style>
    .main {
        padding: 2rem;
    }
    .stApp {
        max-width: 1200px;
        margin: 0 auto;
    }
    .calculator-container {
        background-color: #f8f9fa;
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    h1, h2, h3 {
        color: #1E3A8A;
    }
    .stButton button {
        background-color: #1E88E5;
        color: white;
    }
</style>
""", unsafe_allow_html=True)

# App title
st.title("Multi-Utility Calculator")
st.markdown("A comprehensive calculator and converter application")

# Sidebar for navigation
st.sidebar.title("Navigation")
calculator_type = st.sidebar.selectbox(
    "Select Calculator/Converter",
    [
        "Programmer Calculator",
        "Scientific Calculator",
        "Date Calculator",
        "Currency Converter",
        "Volume Converter",
        "Length Converter",
        "Mass Converter",
        "Temperature Converter",
        "Energy Converter",
        "Area Converter",
        "Time Converter",
        "Data Converter",
        "Pressure Converter"
    ]
)

# Display the selected calculator/converter
st.markdown(f"## {calculator_type}")
st.markdown("---")

# Call the appropriate function based on selection
if calculator_type == "Programmer Calculator":
    programmer_calculator()
elif calculator_type == "Scientific Calculator":
    scientific_calculator()
elif calculator_type == "Date Calculator":
    date_calculator()
elif calculator_type == "Currency Converter":
    currency_converter()
elif calculator_type == "Volume Converter":
    volume_converter()
elif calculator_type == "Length Converter":
    length_converter()
elif calculator_type == "Mass Converter":
    mass_converter()
elif calculator_type == "Temperature Converter":
    temperature_converter()
elif calculator_type == "Energy Converter":
    energy_converter()
elif calculator_type == "Area Converter":
    area_converter()
elif calculator_type == "Time Converter":
    time_converter()
elif calculator_type == "Data Converter":
    data_converter()
elif calculator_type == "Pressure Converter":
    pressure_converter()

# Footer
st.markdown("---")
st.markdown("© 2025 Multi-Utility Calculator App")