Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,98 +1,64 @@
-import dash
-from dash import dcc, html, Input, Output, State, dash_table
+import panel as pn
 import pandas as pd
 import os
 import datetime
-import base64
 import io
 
 from google_sheet import fetch_leaderboard
 from google_drive import upload_to_drive
 
-# Make sure submissions folder exists
-os.makedirs("submissions", exist_ok=True)
+pn.extension()
 
-app = dash.Dash(__name__)
-app.title = "🏆 Hackathon Leaderboard"
+# File upload widget
+file_input = pn.widgets.FileInput(accept='.zip', multiple=False)
 
-app.layout = html.Div([
-    html.H2("🏆 Hackathon Leaderboard"),
+# Status message
+status = pn.pane.Markdown("")
 
-    dcc.Upload(
-        id='upload-data',
-        children=html.Div([
-            '📁 Drag and drop or click to upload a .zip file'
-        ]),
-        style={
-            'width': '50%',
-            'height': '60px',
-            'lineHeight': '60px',
-            'borderWidth': '1px',
-            'borderStyle': 'dashed',
-            'borderRadius': '10px',
-            'textAlign': 'center',
-            'margin': '20px'
-        },
-        multiple=False,
-        accept='.zip'
-    ),
-    html.Button('Submit', id='submit-btn', n_clicks=0),
+# Leaderboard display
+leaderboard = pn.pane.DataFrame(pd.DataFrame(), width=600)
 
-    html.Div(id='upload-status', style={'margin': '20px', 'fontWeight': 'bold'}),
-    html.H3("Leaderboard"),
-    html.Div(id='leaderboard-table', style={'margin': '20px'})
-])
+def submit_file(event):
+    if file_input.value is None:
+        status.object = "⚠️ Please upload a .zip file before submitting."
+        return
 
-def save_file_and_upload(content, filename):
-    timestamp = datetime.datetime.now().isoformat().replace(':', '_')
-    saved_filename = f"{timestamp}_{filename}"
-    path = os.path.join("submissions", saved_filename)
+    # Save uploaded file
+    timestamp = datetime.datetime.now().isoformat().replace(":", "_")
+    filename = f"{timestamp}_{file_input.filename}"
+    submission_path = os.path.join("submissions", filename)
+    os.makedirs("submissions", exist_ok=True)
+    with open(submission_path, "wb") as f:
+        f.write(file_input.value)
 
-    # Decode and save the file
-    content_string = content.split(',')[1]
-    decoded = base64.b64decode(content_string)
-
-    with open(path, 'wb') as f:
-        f.write(decoded)
-
-    # Upload to Google Drive
     try:
-        drive_file_id = upload_to_drive(path, saved_filename)
-        return f"✅ Uploaded to Google Drive [File ID: {drive_file_id}]"
+        drive_file_id = upload_to_drive(submission_path, filename)
+        status.object = f"✅ Uploaded to Google Drive [File ID: {drive_file_id}]"
     except Exception as e:
-        return f"⚠️ Failed to upload to Google Drive: {e}"
+        status.object = f"❌ Failed to upload to Google Drive: {e}"
 
-def generate_leaderboard():
+    # Update leaderboard
     try:
         df = fetch_leaderboard()
-        if df.empty:
-            return html.Div("No submissions yet.")
-        df_sorted = df.sort_values(by="score", ascending=False)
-        return dash_table.DataTable(
-            data=df_sorted.to_dict("records"),
-            columns=[{"name": i, "id": i} for i in df_sorted.columns],
-            style_table={'overflowX': 'auto'},
-            style_cell={'textAlign': 'left', 'padding': '5px'},
-            style_header={'backgroundColor': 'lightgrey', 'fontWeight': 'bold'}
-        )
+        if not df.empty:
+            df_sorted = df.sort_values(by="score", ascending=False)
+            leaderboard.object = df_sorted
+        else:
+            leaderboard.object = pd.DataFrame()
     except Exception as e:
-        return html.Div(f"Could not load leaderboard: {e}")
+        status.object += f"\n⚠️ Could not load leaderboard: {e}"
+
+submit_button = pn.widgets.Button(name="Submit", button_type="primary")
+submit_button.on_click(submit_file)
 
-@app.callback(
-    Output('upload-status', 'children'),
-    Output('leaderboard-table', 'children'),
-    Input('submit-btn', 'n_clicks'),
-    State('upload-data', 'contents'),
-    State('upload-data', 'filename'),
-    prevent_initial_call=True
+# Layout
+app = pn.Column(
+    "## 🏆 Hackathon Leaderboard",
+    file_input,
+    submit_button,
+    status,
+    "### Leaderboard",
+    leaderboard
 )
-def handle_submission(n_clicks, contents, filename):
-    if contents is None:
-        return "❌ No file uploaded.", generate_leaderboard()
-    
-    status = save_file_and_upload(contents, filename)
-    leaderboard = generate_leaderboard()
-    return status, leaderboard
 
-if __name__ == '__main__':
-    app.run(debug=True)
+app.servable()