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| import streamlit as st | |
| import requests | |
| import plotly.graph_objects as go | |
| from datetime import datetime, timedelta | |
| from dotenv import load_dotenv | |
| import os | |
| # Load API Key from .env | |
| load_dotenv() | |
| API_KEY = os.getenv("API_KEY") # Fetch from .env file | |
| # API Endpoints | |
| BASE_URL = "https://api.apilayer.com/exchangerates_data/latest" | |
| HISTORICAL_URL = "https://api.apilayer.com/exchangerates_data/timeseries" | |
| # Streamlit Page Configuration | |
| st.set_page_config(page_title="💱 Currency Converter", page_icon="💰", layout="wide") | |
| # Title | |
| st.title("💱 Currency Converter") | |
| # Fetch available currencies | |
| def get_currencies(): | |
| url = f"{BASE_URL}?apikey={API_KEY}" | |
| response = requests.get(url).json() | |
| if "rates" in response: | |
| return sorted(response["rates"].keys()) | |
| return ["USD", "INR", "EUR", "GBP", "CAD"] # Default if API fails | |
| currencies = get_currencies() | |
| # Input Section | |
| col1, col2 = st.columns(2) | |
| with col1: | |
| amount = st.number_input("Enter Amount:", min_value=0.01, step=0.01) | |
| with col2: | |
| from_currency = st.selectbox("From Currency", currencies, index=currencies.index("USD")) | |
| to_currency = st.selectbox("To Currency", currencies, index=currencies.index("INR")) | |
| # Function to Convert Currency | |
| def convert_currency(amount, from_currency, to_currency): | |
| url = f"{BASE_URL}?base={from_currency}&apikey={API_KEY}" | |
| response = requests.get(url).json() | |
| if "rates" in response and to_currency in response["rates"]: | |
| exchange_rate = response["rates"][to_currency] | |
| converted_amount = amount * exchange_rate | |
| return converted_amount, exchange_rate | |
| else: | |
| return None, None | |
| # Fetch Historical Data | |
| def get_historical_data(from_currency, to_currency): | |
| end_date = datetime.today().strftime("%Y-%m-%d") | |
| start_date = (datetime.today() - timedelta(days=30)).strftime("%Y-%m-%d") | |
| url = f"{HISTORICAL_URL}?apikey={API_KEY}&start_date={start_date}&end_date={end_date}&base={from_currency}&symbols={to_currency}" | |
| response = requests.get(url).json() | |
| if "rates" in response: | |
| dates = sorted(response["rates"].keys()) # Sort dates | |
| rates = [response["rates"][date][to_currency] for date in dates] | |
| return dates, rates | |
| return [], [] | |
| # Convert Button | |
| if st.button("Convert Now"): | |
| if from_currency == to_currency: | |
| st.warning("⚠️ Please select different currencies!") | |
| else: | |
| converted_amount, exchange_rate = convert_currency(amount, from_currency, to_currency) | |
| if converted_amount: | |
| # Black Font Output | |
| st.write(f"### 💵 {amount} {from_currency} = **{converted_amount:.2f} {to_currency}**") | |
| st.write(f"#### 📈 Exchange Rate: **{exchange_rate:.4f}**") | |
| # Display Graph | |
| dates, rates = get_historical_data(from_currency, to_currency) | |
| if dates: | |
| fig = go.Figure() | |
| fig.add_trace(go.Scatter(x=dates, y=rates, mode="lines+markers", name=f"{from_currency} to {to_currency}")) | |
| fig.update_layout(title=f"{from_currency} to {to_currency} Exchange Rate (Last 30 Days)", xaxis_title="Date", yaxis_title="Exchange Rate") | |
| st.plotly_chart(fig) | |
| else: | |
| st.error("❌ Error: Unable to fetch exchange rates.") | |