From ea93053dd3e6585d79be7e5a87539f6dc7b87406 Mon Sep 17 00:00:00 2001
From: Toba Ojo <toba.ojo@mav-systems.com>
Date: Wed, 19 Nov 2025 11:52:37 +0000
Subject: [PATCH] - sesstions start by default - added restart session button

---
 src/components/SessionForm/SessionCard.tsx    | 28 ++++++++++++++++++-
 .../reducers/IntegrationsContextReducer.ts    |  7 ++++-
 src/hooks/useGetOverviewSnapshot.ts           | 26 +++++------------
 3 files changed, 40 insertions(+), 21 deletions(-)

diff --git a/src/components/SessionForm/SessionCard.tsx b/src/components/SessionForm/SessionCard.tsx
index d77931b..a79a9c7 100644
--- a/src/components/SessionForm/SessionCard.tsx
+++ b/src/components/SessionForm/SessionCard.tsx
@@ -4,7 +4,7 @@ import { useIntegrationsContext } from "../../context/IntegrationsContext";
 import type { ReducedSightingType } from "../../types/types";
 import { toast } from "sonner";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
-import { faFloppyDisk, faPause, faPlay, faStop } from "@fortawesome/free-solid-svg-icons";
+import { faFloppyDisk, faPause, faPlay, faStop, faArrowRotateRight } from "@fortawesome/free-solid-svg-icons";
 import VehicleSessionItem from "../UI/VehicleSessionItem";
 import { useCameraBlackboard } from "../../hooks/useCameraBlackboard";
 
@@ -70,6 +70,21 @@ const SessionCard = () => {
     if (result.reason === "OK") toast.success("Session saved");
   };
 
+  const handleRestartClick = async () => {
+    const result = await mutation.mutateAsync({
+      operation: "INSERT",
+      path: "sessionStats",
+      value: [],
+    });
+    await mutation.mutateAsync({
+      operation: "SAVE",
+      path: "",
+      value: null,
+    });
+    if (result.reason === "OK") toast.success("Session restarted");
+    dispatch({ type: "SESSIONRESTART", payload: [] });
+  };
+
   return (
     <Card className="p-4 col-span-3">
       <CardHeader title="Session" />
@@ -85,6 +100,17 @@ const SessionCard = () => {
             <p>{sessionStarted ? "End Session" : "Start Session"}</p>
           </div>
         </button>
+        {sessionStarted && (
+          <button
+            className={`bg-none text-white px-4 py-2 rounded transition w-full border border-gray-500 hover:bg-gray-500 hover:text-gray-900`}
+            onClick={handleRestartClick}
+          >
+            <div className="flex flex-row gap-3 items-center justify-self-center">
+              <FontAwesomeIcon icon={faArrowRotateRight} />
+              <p>Restart Session</p>
+            </div>
+          </button>
+        )}
         <div className="flex flex-col lg:flex-row gap-5">
           {sessionStarted && (
             <button
diff --git a/src/context/reducers/IntegrationsContextReducer.ts b/src/context/reducers/IntegrationsContextReducer.ts
index 00a6fc3..47ba30c 100644
--- a/src/context/reducers/IntegrationsContextReducer.ts
+++ b/src/context/reducers/IntegrationsContextReducer.ts
@@ -1,7 +1,7 @@
 import type { NPEDACTION, NPEDSTATE } from "../../types/types";
 
 export const initialState = {
-  sessionStarted: false,
+  sessionStarted: true,
   sessionList: [],
   sessionPaused: false,
   savedSightings: [],
@@ -36,6 +36,11 @@ export function reducer(state: NPEDSTATE, action: NPEDACTION) {
         ...state,
         sessionPaused: action.payload,
       };
+    case "SESSIONRESTART":
+      return {
+        ...state,
+        sessionList: action.payload,
+      };
     case "ADD":
       return {
         ...state,
diff --git a/src/hooks/useGetOverviewSnapshot.ts b/src/hooks/useGetOverviewSnapshot.ts
index 3b1f513..0b44b1c 100644
--- a/src/hooks/useGetOverviewSnapshot.ts
+++ b/src/hooks/useGetOverviewSnapshot.ts
@@ -15,7 +15,6 @@ async function fetchSnapshot(cameraSide: string): Promise<Blob> {
   return response.blob();
 }
 
-/** Draw an ImageBitmap to canvas with aspect-fill (like object-fit: cover) */
 function drawBitmapToCanvas(canvas: HTMLCanvasElement, bitmap: ImageBitmap) {
   const ctx = canvas.getContext("2d");
   if (!ctx) return;
@@ -42,18 +41,14 @@ function drawBitmapToCanvas(canvas: HTMLCanvasElement, bitmap: ImageBitmap) {
   let drawWidth = width;
   let drawHeight = height;
 
-  // aspect-fit calculation (no cropping)
   if (srcAspect > dstAspect) {
-    // image is wider → fit to canvas width
     drawWidth = width;
     drawHeight = width / srcAspect;
   } else {
-    // image is taller → fit to canvas height
     drawHeight = height;
     drawWidth = height * srcAspect;
   }
 
-  // center image (adds black borders if aspect ratios differ)
   const dx = (width - drawWidth) / 50;
   const dy = (height - drawHeight) / 2;
 
@@ -66,7 +61,6 @@ export function useGetOverviewSnapshot(side: string) {
   const canvasRef = useRef<HTMLCanvasElement | null>(null);
   const latestBitmapRef = useRef<ImageBitmap | null>(null);
 
-  // Redraw helper; always draws the current bitmap if available
   const draw = useCallback(() => {
     const canvas = canvasRef.current;
     const bmp = latestBitmapRef.current;
@@ -82,16 +76,15 @@ export function useGetOverviewSnapshot(side: string) {
   } = useQuery({
     queryKey: ["overviewSnapshot", side],
     queryFn: () => fetchSnapshot(side),
-    // Poll ~4 fps when visible; pause when tab hidden
+
     refetchInterval: () => (document.visibilityState === "visible" ? 250 : false),
     refetchOnWindowFocus: false,
-    // Avoid keeping lots of blobs around in cache
-    gcTime: 0, // v5 name (cacheTime in v4)
+
+    gcTime: 0,
     staleTime: 0,
-    retry: false, // or a small number if you prefer retries
+    retry: false,
   });
 
-  // Convert Blob -> ImageBitmap and draw
   useEffect(() => {
     let cancelled = false;
     if (!snapshotBlob) return;
@@ -104,13 +97,11 @@ export function useGetOverviewSnapshot(side: string) {
           return;
         }
 
-        // Dispose previous bitmap to free memory
         if (latestBitmapRef.current) {
           latestBitmapRef.current.close();
         }
         latestBitmapRef.current = bitmap;
 
-        // Draw now (and again on next resize)
         draw();
       } catch {
         // noop — fetch handler surfaces the main error path
@@ -122,12 +113,11 @@ export function useGetOverviewSnapshot(side: string) {
     };
   }, [snapshotBlob, draw]);
 
-  // Redraw on resize & DPR changes
   useEffect(() => {
     const onResize = () => draw();
     const onDPR = () => draw();
     window.addEventListener("resize", onResize);
-    // Listen for DPR changes (some browsers support this)
+
     const mql = window.matchMedia(`(resolution: ${window.devicePixelRatio}dppx)`);
     mql.addEventListener?.("change", onDPR);
     return () => {
@@ -137,14 +127,13 @@ export function useGetOverviewSnapshot(side: string) {
   }, [draw]);
 
   useEffect(() => {
-    const el = canvasRef.current?.parentElement; // the box
+    const el = canvasRef.current?.parentElement;
     if (!el) return;
-    const ro = new ResizeObserver(() => draw()); // your draw() calls aspect-fit logic
+    const ro = new ResizeObserver(() => draw());
     ro.observe(el);
     return () => ro.disconnect();
   }, [draw]);
 
-  // Cleanup on unmount
   useEffect(() => {
     return () => {
       if (latestBitmapRef.current) {
@@ -154,7 +143,6 @@ export function useGetOverviewSnapshot(side: string) {
     };
   }, []);
 
-  // Optional: normalize error type
   const typedError = error instanceof Error ? error : undefined;
 
   return { canvasRef, isError, error: typedError, isPending };