import streamlit  as st
import requests
import json

# ------------------- CONFIGURATION ------------------- #
API_URL = "https://api-inference.huggingface.co/models/HuggingFaceTB/SmolVLM-256M-Instruct"
API_TOKEN = "YOUR_HUGGINGFACE_API_TOKEN"  # Replace with your actual Hugging Face API token

headers = {"Authorization": f"Bearer {API_TOKEN}"}

# ------------------- FUNCTION TO QUERY MODEL ------------------- #
def query_huggingface_api(prompt):
    payload = {
        "inputs": prompt,
        "parameters": {
            "max_new_tokens": 200,
            "temperature": 0.7
        }
    }
    response = requests.post(API_URL, headers=headers, json=payload)
    if response.status_code != 200:
        st.error(f"API Error {response.status_code}: {response.text}")
        return None
    return response.json()

# ------------------- STREAMLIT APP ------------------- #
st.set_page_config(page_title="Build Smart Estimator", page_icon="🏗️")

# App title
st.title("🏗️ Build Smart Estimator")
st.markdown("""
Welcome to **Build Smart Estimator** — an intelligent tool to help you estimate construction materials based on your project details!
""")

# Input Fields
st.header("Enter Your Project Details")

col1, col2 = st.columns(2)

with col1:
    total_area = st.number_input("🏠 Total Area (in square meters)", min_value=10.0, step=10.0)
    num_floors = st.number_input("🏢 Number of Floors", min_value=1, step=1)

with col2:
    structure_type = st.selectbox("🏗️ Structure Type", options=[
        "Residential", "Commercial", "Industrial", "Warehouse"
    ])
    material_pref = st.multiselect(
        "🧱 Material Preference (Select one or more)",
        options=["Cement", "Bricks", "Steel", "Concrete"]
    )

# Submit button
if st.button("Estimate Materials 🚀"):
    if total_area <= 0 or num_floors <= 0:
        st.warning("Please enter valid Total Area and Number of Floors.")
    elif not material_pref:
        st.warning("Please select at least one Material Preference.")
    else:
        # Prepare input prompt for the model
        prompt = (
            f"Estimate the required quantities of {', '.join(material_pref)} "
            f"for a {structure_type.lower()} building with a total area of {total_area} square meters "
            f"and {num_floors} floors. Provide the estimates in a clear and concise manner."
        )

        st.info("Sending your inputs to the smart estimator...")

        # Call Hugging Face model
        response = query_huggingface_api(prompt)

        if response:
            st.subheader("📊 Estimated Material Requirements")
            # Assuming the model returns a list with a 'generated_text' field
            if isinstance(response, list) and 'generated_text' in response[0]:
                st.write(response[0]['generated_text'])
            else:
                st.write(response)

# Footer
st.markdown("---")
st.caption("© 2025 Build Smart Estimator | Powered by Streamlit & Hugging Face")

import math

st.title("Scientific Calculator")

# All operations
operations = [
    "+", "-", "*", "/", "^ (power)", "% (modulus)", "// (floor division)",
    "√ (square root)", "log10", "ln (natural log)", "n! (factorial)",
    "sin", "cos", "tan", "exp (e^x)"
]

operation = st.selectbox("Select operation", operations)

# Input fields
num1 = st.number_input("Enter first number", format="%.4f")

# Only show num2 for operations that need two inputs
if operation in ["+", "-", "*", "/", "^ (power)", "% (modulus)", "// (floor division)"]:
    num2 = st.number_input("Enter second number", format="%.4f")
else:
    num2 = None

result = None
error = None

if st.button("Calculate"):
    try:
        if operation == "+":
            result = num1 + num2
        elif operation == "-":
            result = num1 - num2
        elif operation == "*":
            result = num1 * num2
        elif operation == "/":
            if num2 != 0:
                result = num1 / num2
            else:
                error = "Cannot divide by zero"
        elif operation == "^ (power)":
            result = num1 ** num2
        elif operation == "% (modulus)":
            if num2 != 0:
                result = num1 % num2
            else:
                error = "Cannot perform modulus by zero"
        elif operation == "// (floor division)":
            if num2 != 0:
                result = num1 // num2
            else:
                error = "Cannot perform floor division by zero"
        elif operation == "√ (square root)":
            if num1 >= 0:
                result = math.sqrt(num1)
            else:
                error = "Cannot take square root of a negative number"
        elif operation == "log10":
            if num1 > 0:
                result = math.log10(num1)
            else:
                error = "Log10 undefined for non-positive numbers"
        elif operation == "ln (natural log)":
            if num1 > 0:
                result = math.log(num1)
            else:
                error = "Natural log undefined for non-positive numbers"
        elif operation == "n! (factorial)":
            if num1 >= 0 and num1 == int(num1):
                result = math.factorial(int(num1))
            else:
                error = "Factorial only defined for non-negative integers"
        elif operation == "sin":
            result = math.sin(math.radians(num1))
        elif operation == "cos":
            result = math.cos(math.radians(num1))
        elif operation == "tan":
            result = math.tan(math.radians(num1))
        elif operation == "exp (e^x)":
            result = math.exp(num1)
    except Exception as e:
        error = str(e)

    if error:
        st.error(error)
    else:
        st.success(f"Result: {result:.6f}")