app.py

app.py

@@ -2,6 +2,7 @@ import streamlit as st
 import requests
 import pandas as pd
 import plotly.graph_objs as go
+from datetime import datetime
 
 # Function to fetch historical price data from CoinGecko
 def fetch_historical_data(coin_id, from_timestamp, to_timestamp):
@@ -11,6 +12,8 @@ def fetch_historical_data(coin_id, from_timestamp, to_timestamp):
         response.raise_for_status()
         data = response.json()
         prices = data.get('prices', [])
+        if not prices:
+            return "No historical data available for the selected date range."
         return prices
     except requests.RequestException as e:
         return f"Error fetching historical data: {e}"
@@ -22,22 +25,30 @@ def fetch_current_price(coin_id):
         response = requests.get(url)
         response.raise_for_status()
         data = response.json()
-        return data.get(coin_id, {}).get('usd', 'N/A')
+        price = data.get(coin_id, {}).get('usd', 'N/A')
+        return price
     except requests.RequestException as e:
         return f"Error fetching current price: {e}"
 
 # Function to convert dates to timestamps
 def date_to_timestamp(date_str):
-    return int(pd.Timestamp(date_str).timestamp())
+    try:
+        return int(pd.Timestamp(date_str).timestamp())
+    except Exception as e:
+        st.error(f"Error converting date to timestamp: {e}")
+        return None
 
 # Function to plot historical prices using Plotly
 def plot_historical_prices(coin_name, from_date, to_date):
     from_timestamp = date_to_timestamp(from_date)
     to_timestamp = date_to_timestamp(to_date)
     
+    if from_timestamp is None or to_timestamp is None:
+        return "Invalid date format. Please ensure dates are in YYYY-MM-DD format."
+    
     prices = fetch_historical_data(coin_name, from_timestamp, to_timestamp)
     
-    if isinstance(prices, str):  # Error fetching data
+    if isinstance(prices, str):  # Error message
         return prices
     
     try:
@@ -131,7 +142,7 @@ if tab == "Price Chart":
     
     if st.button("Plot Chart"):
         fig = plot_historical_prices(selected_crypto, from_date, to_date)
-        if isinstance(fig, str):  # Error plotting data
+        if isinstance(fig, str):  # Error message
             st.error(fig)
         else:
             st.plotly_chart(fig)
@@ -144,7 +155,7 @@ elif tab == "Current Price":
 elif tab == "Real-Time Trade Data":
     st.header("Real-Time Cryptocurrency Trade Data")
     data = fetch_real_time_trade_data(selected_crypto)
-    if isinstance(data, str):  # Error fetching real-time data
+    if isinstance(data, str):  # Error message
         st.error(data)
     else:
         st.write(f"The latest trading data for {selected_crypto.capitalize()} is: ${data[1]}")
@@ -157,3 +168,6 @@ elif tab == "AI BTC Analysis":
 elif tab == "TradingView Chart":
     st.header("Live TradingView Chart")
     st.markdown(tradingview_widget(), unsafe_allow_html=True)
+
+
+