Update app.py

app.py

@@ -1,6 +1,5 @@
 import streamlit as st
 from transformers import pipeline
-import hashlib
 
 # Function definitions
 def img2text(url):
@@ -32,40 +31,41 @@ def main():
     uploaded_file = st.file_uploader("Select an Image...")
     
     if uploaded_file is not None:
-        # Get file bytes and compute a hash
-        bytes_data = uploaded_file.getvalue()
-        file_hash = hashlib.sha256(bytes_data).hexdigest()
-        
-        # Reset session state only if the file content has changed
-        if ("last_uploaded_hash" not in st.session_state) or (st.session_state.last_uploaded_hash != file_hash):
-            st.session_state.scenario = None
-            st.session_state.story = None
-            st.session_state.audio_data = None
-            st.session_state.last_uploaded_hash = file_hash
-        
+        # Add a checkbox to allow forced regeneration.
+        force_regen = st.checkbox("Force regenerate story", value=False)
+    
         # Save the uploaded file locally.
+        bytes_data = uploaded_file.getvalue()
         with open(uploaded_file.name, "wb") as file:
             file.write(bytes_data)
         st.image(uploaded_file, caption="Uploaded Image", use_container_width=True)
-        
+    
+        # Initialize/reset session state for this run.
+        if "scenario" not in st.session_state or force_regen:
+            st.session_state.scenario = None
+        if "story" not in st.session_state or force_regen:
+            st.session_state.story = None
+        if "audio_data" not in st.session_state or force_regen:
+            st.session_state.audio_data = None
+    
         # Stage 1: Image to Text
         if st.session_state.scenario is None:
             st.text("Processing img2text...")
             st.session_state.scenario = img2text(uploaded_file.name)
         st.write(st.session_state.scenario)
-        
+    
         # Stage 2: Text to Story
         if st.session_state.story is None:
             st.text("Generating a story...")
             st.session_state.story = text2story(st.session_state.scenario)
         st.write(st.session_state.story)
-        
+    
         # Stage 3: Story to Audio data
         if st.session_state.audio_data is None:
             st.text("Generating audio data...")
             st.session_state.audio_data = text2audio(st.session_state.story)
-        
-        # Play Audio button – uses stored audio_data.
+    
+        # Play button – uses stored audio_data so the story won't be re-generated on every click.
         if st.button("Play Audio"):
             st.audio(
                 st.session_state.audio_data["audio"],