Update app.py

app.py

@@ -136,50 +136,20 @@ def set_active_service(
     logging.info("No service category enabled.")
     return None, "No Service Category Enabled"
 
-def generate_line_chart():
+def generate_line_chart() -> Optional[str]:
     if not crack_counts:
         return None
-    ```chartjs
-    {
-        "type": "line",
-        "data": {
-            "labels": [i for i in range(len(crack_counts[-50:]))],
-            "datasets": [{
-                "label": crack_counts[-50:],
-                "data": crack_counts[-50:],
-                "borderColor": "#4682B4",
-                "backgroundColor": "#4682B4",
-                "fill": false,
-                "pointBackgroundColor": "#3CB371",
-                "pointRadius": 5
-            }]
-        },
-        "options": {
-            "responsive": false,
-            "scales": {
-                "x": {
-                    "title": {
-                        "display": true,
-                        "text": "Frame"
-                    }
-                },
-                "y": {
-                    "title": {
-                        "display": true,
-                        "text": "Count of Cracks/Holes"
-                    }
-                }
-            },
-            "title": {
-                "display": true,
-                "text": "Cracks/Holes Over Time"
-            }
-        }
-    }
-    ```
-
-def generate_map(gps_coordinates: List[List[float]], items: List[Dict]]) -> Optional[str]:
-    return generate_map(gps_coordinates, items)
+    fig, ax = plt.subplots(figsize=(4, 2))
+    ax.plot(crack_counts[-50:], marker='o', color='#4682B4')
+    ax.set_title("Cracks/Holes Over Time")
+    ax.set_xlabel("Frame")
+    ax.set_ylabel("Count")
+    ax.grid(True)
+    fig.tight_layout()
+    chart_path = "chart_temp.png"
+    fig.savefig(chart_path)
+    plt.close(fig)
+    return chart_path
 
 def monitor_feed() -> Tuple[
     Optional[np.ndarray],
@@ -188,19 +158,13 @@ def monitor_feed() -> Tuple[
     List[str],
     List[str],
     Optional[str],
-    global
-    paused,
-    frame_count,
-    last_frame,
-    last_metrics,
-    last_timestamp,
-    gps_coordinates,
-    last_detected_cracks,
-    last_detected_holes,
-    video_loaded
+    Optional[str]
+]:
+    global paused, frame_count, last_frame, last_metrics, last_timestamp
+    global gps_coordinates, last_detected_cracks, last_detected_holes, video_loaded
 
     if not video_loaded:
-        log_entries.append(("Cannot start streaming: Video not loaded successfully.")
+        log_entries.append("Cannot start streaming: Video not loaded successfully.")
         logging.error("Video not loaded successfully.")
         return (
             None,