Remove save button and implement auto-save functionality

Replaces the manual save button with an automatic save feature that triggers after a short delay and updates the UI to reflect the save status.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 55837015-10e9-4be9-b857-7f5e6be73772
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 5bc80858-66c8-4834-9177-6c352a80c5e3
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1cc377db-7ea0-49f2-97ce-c3e87e0228cc/55837015-10e9-4be9-b857-7f5e6be73772/Sh1LoFS
Replit-Helium-Checkpoint-Created: true

artifacts/cra-app/src/pages/timesheet-detail.tsx

@@ -13,7 +13,6 @@ import {
 import { useQueryClient } from "@tanstack/react-query";
 import { 
   ArrowLeft, 
-  Save, 
   Send, 
   Plus, 
   Trash2, 
@@ -105,25 +104,19 @@ export default function TimesheetDetailPage() {
   }, [timesheet]);
 
   const HOUR_OPTIONS = [0, 0.5, 1, 2, 3, 4, 5, 6, 7, 7.7];
+  const [saveStatus, setSaveStatus] = useState<"idle" | "saving" | "saved">("idle");
+  const saveTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const localEntriesRef = useRef(localEntries);
+  localEntriesRef.current = localEntries;
 
-  const handleSetHours = (lineId: number, dateStr: string, hours: number) => {
-    const key = `${lineId}-${dateStr}`;
-    setLocalEntries(prev => ({ ...prev, [key]: hours }));
-    setHasUnsavedChanges(true);
-  };
-
-  const mutateFnRef = useRef(upsertEntries.mutate);
-  mutateFnRef.current = upsertEntries.mutate;
-
-  const handleSave = useCallback(() => {
+  const doSave = useCallback(() => {
     if (!timesheetId) return;
+    const entries = localEntriesRef.current;
 
     const entriesToSave: LocalEntry[] = [];
-    Object.entries(localEntries).forEach(([key, hours]) => {
-      const [lineIdStr, date] = key.split("-", 2);
-      // Reconstruct the full date string since we split by '-'
+    Object.entries(entries).forEach(([key, hours]) => {
+      const lineIdStr = key.split("-")[0];
       const fullDate = key.substring(lineIdStr.length + 1);
-      
       if (hours > 0) {
         entriesToSave.push({
           timesheetLineId: parseInt(lineIdStr),
@@ -133,37 +126,84 @@ export default function TimesheetDetailPage() {
       }
     });
 
-    mutateFnRef.current({
+    setSaveStatus("saving");
+    upsertEntries.mutate({
       timesheetId,
       data: { entries: entriesToSave }
     }, {
       onSuccess: () => {
-        toast({ title: "Modifications sauvegardées" });
+        setSaveStatus("saved");
         setHasUnsavedChanges(false);
         queryClient.invalidateQueries({ queryKey: getGetTimesheetQueryKey(timesheetId) });
+        setTimeout(() => setSaveStatus("idle"), 2000);
       },
       onError: () => {
+        setSaveStatus("idle");
         toast({ title: "Erreur de sauvegarde", variant: "destructive" });
       }
     });
-  }, [timesheetId, localEntries, toast, queryClient]);
+  }, [timesheetId, upsertEntries, queryClient, toast]);
+
+  const handleSetHours = (lineId: number, dateStr: string, hours: number) => {
+    const key = `${lineId}-${dateStr}`;
+    setLocalEntries(prev => ({ ...prev, [key]: hours }));
+    setHasUnsavedChanges(true);
+
+    if (saveTimerRef.current) clearTimeout(saveTimerRef.current);
+    saveTimerRef.current = setTimeout(() => doSave(), 800);
+  };
+
+  useEffect(() => {
+    return () => {
+      if (saveTimerRef.current) clearTimeout(saveTimerRef.current);
+    };
+  }, []);
 
   const handleSubmit = () => {
-    if (hasUnsavedChanges) {
-      toast({ title: "Veuillez sauvegarder avant de soumettre", variant: "destructive" });
-      return;
+    if (saveTimerRef.current) {
+      clearTimeout(saveTimerRef.current);
+      saveTimerRef.current = null;
     }
 
-    if (confirm("Êtes-vous sûr de vouloir soumettre ce CRA ? Il ne pourra plus être modifié.")) {
-      updateTimesheet.mutate({
-        id: timesheetId,
-        data: { status: "submitted" }
-      }, {
-        onSuccess: () => {
-          toast({ title: "CRA soumis avec succès" });
-          queryClient.invalidateQueries({ queryKey: getGetTimesheetQueryKey(timesheetId) });
+    const flushAndSubmit = () => {
+      if (confirm("Êtes-vous sûr de vouloir soumettre ce CRA ? Il ne pourra plus être modifié.")) {
+        updateTimesheet.mutate({
+          id: timesheetId,
+          data: { status: "submitted" }
+        }, {
+          onSuccess: () => {
+            toast({ title: "CRA soumis avec succès" });
+            queryClient.invalidateQueries({ queryKey: getGetTimesheetQueryKey(timesheetId) });
+          }
+        });
+      }
+    };
+
+    if (hasUnsavedChanges) {
+      const entries = localEntriesRef.current;
+      const entriesToSave: LocalEntry[] = [];
+      Object.entries(entries).forEach(([key, hours]) => {
+        const lineIdStr = key.split("-")[0];
+        const fullDate = key.substring(lineIdStr.length + 1);
+        if (hours > 0) {
+          entriesToSave.push({ timesheetLineId: parseInt(lineIdStr), date: fullDate, hours });
         }
       });
+      setSaveStatus("saving");
+      upsertEntries.mutate({ timesheetId, data: { entries: entriesToSave } }, {
+        onSuccess: () => {
+          setSaveStatus("idle");
+          setHasUnsavedChanges(false);
+          queryClient.invalidateQueries({ queryKey: getGetTimesheetQueryKey(timesheetId) });
+          flushAndSubmit();
+        },
+        onError: () => {
+          setSaveStatus("idle");
+          toast({ title: "Erreur de sauvegarde, impossible de soumettre", variant: "destructive" });
+        }
+      });
+    } else {
+      flushAndSubmit();
     }
   };
 
@@ -247,20 +287,31 @@ export default function TimesheetDetailPage() {
         <div className="flex items-center gap-3">
           {isEditable && (
             <>
-              <Button 
-                variant={hasUnsavedChanges ? "default" : "outline"} 
-                onClick={handleSave}
-                disabled={!hasUnsavedChanges || upsertEntries.isPending}
-                className="gap-2"
-              >
-                <Save className="h-4 w-4" />
-                {hasUnsavedChanges ? "Sauvegarder les modifs" : "Sauvegardé"}
-              </Button>
+              <span className="text-xs text-muted-foreground flex items-center gap-1.5">
+                {saveStatus === "saving" && (
+                  <>
+                    <span className="h-2 w-2 rounded-full bg-amber-400 animate-pulse" />
+                    Enregistrement...
+                  </>
+                )}
+                {saveStatus === "saved" && (
+                  <>
+                    <CheckCircle className="h-3.5 w-3.5 text-green-500" />
+                    Enregistré
+                  </>
+                )}
+                {saveStatus === "idle" && !hasUnsavedChanges && (
+                  <>
+                    <CheckCircle className="h-3.5 w-3.5 text-muted-foreground" />
+                    À jour
+                  </>
+                )}
+              </span>
               <Button 
                 variant="default"
                 className="gap-2 bg-green-600 hover:bg-green-700 text-white"
                 onClick={handleSubmit}
-                disabled={hasUnsavedChanges || updateTimesheet.isPending}
+                disabled={saveStatus === "saving" || updateTimesheet.isPending}
               >
                 <Send className="h-4 w-4" />
                 Soumettre