Update app.py

app.py

@@ -1,6 +1,14 @@
 import gradio as gr
-from config import index_options, time_intervals, START_DATE, END_DATE
-from app_utils import update_stock_options, process_inputs
+from datetime import datetime, date, timedelta
+from config import index_options, time_intervals, START_DATE, END_DATE, FORECAST_PERIOD
+from data_fetcher import get_stocks_from_index
+from stock_analysis import get_stock_graph_and_info
+
+def validate_date(date_string):
+    try:
+        return datetime.strptime(date_string, "%Y-%m-%d").date()
+    except ValueError:
+        return None
 
 demo = gr.Blocks()
 
@@ -11,6 +19,7 @@ with demo:
     d4 = gr.Radio(['Line Graph', 'Candlestick Graph'], label='Select Graph Type', value='Line Graph', interactive=True)
     d5 = gr.Dropdown(['ARIMA', 'Prophet', 'LSTM'], label='Select Forecasting Method', value='ARIMA', interactive=True)
     
+    # New date inputs using Textbox
     date_start = gr.Textbox(label="Start Date (YYYY-MM-DD)", value=START_DATE.strftime("%Y-%m-%d"))
     date_end = gr.Textbox(label="End Date (YYYY-MM-DD)", value=END_DATE.strftime("%Y-%m-%d"))
 
@@ -20,6 +29,29 @@ with demo:
     inputs = [d1, d2, d3, d4, d5, date_start, date_end]
     outputs = [out_graph, out_fundamentals]
 
+    def update_stock_options(index):
+        stocks = get_stocks_from_index(index)
+        return gr.Dropdown(choices=stocks)
+
+    def process_inputs(*args):
+        idx, stock, interval, graph_type, forecast_method, start_date, end_date = args
+        
+        start = validate_date(start_date)
+        end = validate_date(end_date)
+        
+        if start is None or end is None:
+            return "Invalid date format. Please use YYYY-MM-DD.", None
+        
+        if start > end:
+            return "Start date must be before end date.", None
+        
+        try:
+            fig, fundamentals = get_stock_graph_and_info(idx, stock, interval, graph_type, forecast_method, start, end)
+            return fig, fundamentals
+        except Exception as e:
+            error_message = f"An error occurred: {str(e)}"
+            return error_message, None
+
     d1.change(update_stock_options, d1, d2)
     d2.change(process_inputs, inputs, outputs)
     d3.change(process_inputs, inputs, outputs)