update

app.py

@@ -6,6 +6,10 @@ from chainguard.blockchain_logger import BlockchainLogger
 # Initialize Blockchain Logger
 blockchain_logger = BlockchainLogger()
 
+# Define the directory for storing uploaded files
+UPLOAD_DIR = "uploads"
+os.makedirs(UPLOAD_DIR, exist_ok=True)
+
 
 def log_metadata(file_name, tags, album):
     """Log photo metadata to Chagu blockchain."""
@@ -29,6 +33,12 @@ uploaded_files = st.file_uploader(
 
 if uploaded_files:
     for uploaded_file in uploaded_files:
+        # Save uploaded file locally
+        file_path = os.path.join(UPLOAD_DIR, uploaded_file.name)
+        with open(file_path, "wb") as f:
+            f.write(uploaded_file.getbuffer())
+        st.success(f"File {uploaded_file.name} saved locally in {UPLOAD_DIR}.")
+
         # Display uploaded file
         st.write(f"File Name: {uploaded_file.name}")
         if uploaded_file.type.startswith('image'):
@@ -44,7 +54,14 @@ if uploaded_files:
             metadata = log_metadata(uploaded_file.name, tags.split(','), album)
             st.write(f"Metadata logged successfully! Block Details: {metadata}")
 
-# Display Blockchain Validation
+# Blockchain Integrity Validation
 if st.button("Validate Blockchain Integrity"):
     is_valid = blockchain_logger.is_blockchain_valid()
-    st.write("Blockchain Integrity:", "Valid ✅" if is_valid else "Invalid ❌")
+    if is_valid:
+        st.success("Blockchain Integrity: Valid ✅")
+    else:
+        st.error("Blockchain Integrity: Invalid ❌")
+        if st.button("Simulate Blockchain Corruption"):
+            # Simulate corruption for testing
+            blockchain_logger.blockchain[1]['data'] = {"corrupted": "This block has been tampered with."}
+            st.warning("Blockchain corrupted for testing purposes!")