file upload done

app.py

@@ -1,3 +1,61 @@
 import streamlit as st
-x = st.slider('Select a value')
-st.write(x, 'squared is', x * x)
+import os
+import json
+def is_new_file_upload(uploaded_file):
+    if 'last_uploaded_file' in st.session_state:
+        # Check if the newly uploaded file is different from the last one
+        if (uploaded_file.name != st.session_state.last_uploaded_file['name'] or
+                uploaded_file.size != st.session_state.last_uploaded_file['size']):
+            st.session_state.last_uploaded_file = {'name': uploaded_file.name, 'size': uploaded_file.size}
+            # st.write("A new src image file has been uploaded.")
+            return True
+        else:
+            # st.write("The same src image file has been re-uploaded.")
+            return False
+    else:
+        # st.write("This is the first file upload detected.")
+        st.session_state.last_uploaded_file = {'name': uploaded_file.name, 'size': uploaded_file.size}
+        return True
+big_text = """
+    <div style='text-align: center;'>
+        <h1 style='font-size: 30x;'>Knowledge Extraction 1</h1>
+    </div>
+    """
+    # Display the styled text
+st.markdown(big_text, unsafe_allow_html=True)
+
+uploaded_json_file = st.file_uploader("Upload a pre-processed file",
+                                           type=['json'])
+st.markdown(
+    f'<a href="https://ikmtechnology.github.io/ikmtechnology/untethered_extracted_paragraphs.json" target="_blank">Sample 1 download and then upload to above</a>',
+    unsafe_allow_html=True)
+
+if uploaded_json_file is not None:
+    if is_new_file_upload(uploaded_json_file):
+        print("is new file uploaded")
+        save_path = './uploaded_files'
+        if not os.path.exists(save_path):
+            os.makedirs(save_path)
+        with open(os.path.join(save_path, uploaded_json_file.name), "wb") as f:
+            f.write(uploaded_json_file.getbuffer())  # Write the file to the specified location
+            st.success(f'Saved file temp_{uploaded_json_file.name} in {save_path}')
+            st.session_state.uploaded_path=os.path.join(save_path, uploaded_json_file.name)
+            # st.session_state.page_count = utils.get_pdf_page_count(st.session_state.uploaded_pdf_path)
+            # print("page_count=",st.session_state.page_count)
+        content = uploaded_json_file.read()
+        try:
+            data = json.loads(content)
+            #print(data)
+            # Check if the parsed data is a dictionary
+            if isinstance(data, list):
+                # Count the number of top-level elements
+                st.session_state.list_count  = len(data)
+                st.write(f'The number of elements at the top level of the hierarchy: {st.session_state.list_count }')
+            else:
+                st.write('The JSON content is not a dictionary.')
+        except json.JSONDecodeError:
+            st.write('Invalid JSON file.')
+        st.rerun()
+
+if 'list_count' in st.session_state:
+    st.write(f'The number of elements at the top level of the hierarchy: {st.session_state.list_count }')