Add date-aware time slot picker for rescheduling

Enhanced TimeSlotPickerModal with:
- Date selection via date input and navigation arrows
- Passed time slots filtered out (only show future slots for today)
- Complete schedule picker (date + time in one modal)
- Dynamic slot availability based on selected date
- Better UX with date/time sections clearly separated

Updated AdminConsulting to:
- Use editSessionDate when opening time slot picker
- Pass selected date back from modal to parent
- Handle date changes during rescheduling

Fixes the issue where admins could only select time slots for the original
session date, not the new rescheduled date.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/admin/TimeSlotPickerModal.tsx

@@ -1,10 +1,11 @@
 import { useState, useEffect } from 'react';
 import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from '@/components/ui/dialog';
 import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
 import { Badge } from '@/components/ui/badge';
 import { Skeleton } from '@/components/ui/skeleton';
-import { Clock, Calendar as CalendarIcon, Loader2 } from 'lucide-react';
-import { format, addMinutes, parse, isAfter, isBefore, startOfDay } from 'date-fns';
+import { Clock, Calendar as CalendarIcon, Loader2, ChevronLeft, ChevronRight } from 'lucide-react';
+import { format, addMinutes, parse, isAfter, isBefore, startOfDay, addDays, isToday, isPast } from 'date-fns';
 import { id } from 'date-fns/locale';
 import { supabase } from '@/integrations/supabase/client';
 
@@ -36,7 +37,7 @@ interface TimeSlotPickerModalProps {
   selectedDate: Date;
   initialStartTime?: string;
   initialEndTime?: string;
-  onSave: (startTime: string, endTime: string, totalBlocks: number, totalDuration: number) => void;
+  onSave: (startTime: string, endTime: string, totalBlocks: number, totalDuration: number, selectedDate: string) => void;
   sessionId?: string; // If editing, exclude this session from availability check
 }
 
@@ -54,6 +55,9 @@ export function TimeSlotPickerModal({
   const [confirmedSlots, setConfirmedSlots] = useState<ConfirmedSlot[]>([]);
   const [loading, setLoading] = useState(true);
 
+  // Date selection state
+  const [currentDate, setCurrentDate] = useState<Date>(selectedDate);
+
   // Range selection state
   const [selectedRange, setSelectedRange] = useState<{ start: string | null; end: string | null }>({
     start: initialStartTime || null,
@@ -61,11 +65,21 @@ export function TimeSlotPickerModal({
   });
   const [pendingSlot, setPendingSlot] = useState<string | null>(null);
 
+  // Reset range when date changes
+  useEffect(() => {
+    setCurrentDate(selectedDate);
+    setSelectedRange({
+      start: initialStartTime || null,
+      end: initialEndTime || null
+    });
+    setPendingSlot(null);
+  }, [selectedDate, initialStartTime, initialEndTime]);
+
   useEffect(() => {
     if (open) {
       fetchData();
     }
-  }, [open, selectedDate]);
+  }, [open, currentDate]);
 
   const fetchData = async () => {
     setLoading(true);
@@ -83,7 +97,7 @@ export function TimeSlotPickerModal({
     }
 
     // Fetch confirmed sessions for availability check
-    const dateStr = format(selectedDate, 'yyyy-MM-dd');
+    const dateStr = format(currentDate, 'yyyy-MM-dd');
     const query = supabase
       .from('consulting_sessions')
       .select('session_date, start_time, end_time')
@@ -103,10 +117,28 @@ export function TimeSlotPickerModal({
     setLoading(false);
   };
 
+  // Date navigation handlers
+  const handlePreviousDay = () => {
+    const newDate = addDays(currentDate, -1);
+    setCurrentDate(newDate);
+  };
+
+  const handleNextDay = () => {
+    const newDate = addDays(currentDate, 1);
+    setCurrentDate(newDate);
+  };
+
+  const handleDateChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const newDate = parse(e.target.value, 'yyyy-MM-dd', new Date());
+    if (!isNaN(newDate.getTime())) {
+      setCurrentDate(newDate);
+    }
+  };
+
   const generateTimeSlots = (): TimeSlot[] => {
     if (!settings || !workhours.length) return [];
 
-    const dayOfWeek = selectedDate.getDay();
+    const dayOfWeek = currentDate.getDay();
     const workhour = workhours.find(wh => wh.weekday === dayOfWeek);
 
     if (!workhour) {
@@ -119,17 +151,28 @@ export function TimeSlotPickerModal({
     const startTime = parse(workhour.start_time, 'HH:mm:ss', new Date());
     const endTime = parse(workhour.end_time, 'HH:mm:ss', new Date());
 
-    let currentTime = startTime;
-    while (true) {
-      const slotEnd = addMinutes(currentTime, slotDuration);
+    // For today, filter out passed time slots
+    const now = new Date();
+    const isTodayDate = isToday(currentDate);
+    const currentTimeStr = isTodayDate ? format(now, 'HH:mm') : '00:00';
 
-      if (isAfter(slotEnd, endTime) || isBefore(slotEnd, currentTime)) {
+    let currentSlotTime = startTime;
+    while (true) {
+      const slotEnd = addMinutes(currentSlotTime, slotDuration);
+
+      if (isAfter(slotEnd, endTime) || isBefore(slotEnd, currentSlotTime)) {
         break;
       }
 
-      const timeString = format(currentTime, 'HH:mm');
+      const timeString = format(currentSlotTime, 'HH:mm');
 
-      // Check if this slot is available
+      // Skip slots that have already passed for today
+      if (isTodayDate && timeString < currentTimeStr) {
+        currentSlotTime = slotEnd;
+        continue;
+      }
+
+      // Check if this slot is available (not booked by another session)
       const isAvailable = !confirmedSlots.some(slot => {
         const slotStart = slot.start_time.substring(0, 5);
         const slotEnd = slot.end_time.substring(0, 5);
@@ -142,7 +185,7 @@ export function TimeSlotPickerModal({
         available: isAvailable
       });
 
-      currentTime = slotEnd;
+      currentSlotTime = slotEnd;
     }
 
     return slots;
@@ -201,7 +244,8 @@ export function TimeSlotPickerModal({
 
   const handleSave = () => {
     if (selectedRange.start && selectedRange.end) {
-      onSave(selectedRange.start, selectedRange.end, totalBlocks, totalDuration);
+      const dateStr = format(currentDate, 'yyyy-MM-dd');
+      onSave(selectedRange.start, selectedRange.end, totalBlocks, totalDuration, dateStr);
     }
   };
 
@@ -209,9 +253,9 @@ export function TimeSlotPickerModal({
     <Dialog open={open} onOpenChange={onClose}>
       <DialogContent className="max-w-2xl border-2 border-border max-h-[90vh] overflow-y-auto">
         <DialogHeader>
-          <DialogTitle>Pilih Waktu Sesi</DialogTitle>
+          <DialogTitle>Pilih Jadwal Sesi</DialogTitle>
           <DialogDescription>
-            {format(selectedDate, 'd MMMM yyyy', { locale: id })} • Pilih slot waktu untuk sesi konsultasi
+            Pilih tanggal dan waktu untuk sesi konsultasi
           </DialogDescription>
         </DialogHeader>
 
@@ -223,74 +267,150 @@ export function TimeSlotPickerModal({
           </div>
         ) : (
           <div className="space-y-4">
-            {/* Info */}
-            <div className="flex items-center gap-2 text-sm text-muted-foreground bg-muted p-3 rounded-lg">
-              <Clock className="w-4 h-4" />
-              <span>
-                Klik slot untuk memilih durasi. Setiap slot = {settings?.consulting_block_duration_minutes || 30} menit
-              </span>
+            {/* Date Selector */}
+            <div className="space-y-3">
+              <div className="flex items-center gap-2 text-sm font-medium">
+                <CalendarIcon className="w-4 h-4" />
+                <span>Tanggal</span>
+              </div>
+
+              {/* Date Navigation */}
+              <div className="flex items-center gap-2">
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={handlePreviousDay}
+                  className="border-2"
+                  disabled={isPast(addDays(currentDate, 1))}
+                >
+                  <ChevronLeft className="w-4 h-4" />
+                </Button>
+
+                <Input
+                  type="date"
+                  value={format(currentDate, 'yyyy-MM-dd')}
+                  onChange={handleDateChange}
+                  className="flex-1 border-2"
+                  min={format(new Date(), 'yyyy-MM-dd')}
+                />
+
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={handleNextDay}
+                  className="border-2"
+                >
+                  <ChevronRight className="w-4 h-4" />
+                </Button>
+              </div>
+
+              {/* Selected Date Display */}
+              <div className="text-center">
+                <p className="text-lg font-semibold">
+                  {format(currentDate, 'd MMMM yyyy', { locale: id })}
+                </p>
+                <p className="text-xs text-muted-foreground">
+                  {isToday(currentDate) && 'Hari ini • '}
+                  {timeSlots.length} slot tersedia
+                </p>
+              </div>
             </div>
 
-            {/* Time Slots Grid */}
-            <div className="grid grid-cols-4 sm:grid-cols-6 md:grid-cols-8 gap-2">
-              {timeSlots.map((slot) => {
-                const isSelected = selectedRange.start && selectedRange.end &&
-                  timeSlots.findIndex(s => s.start === selectedRange.start) <=
-                  timeSlots.findIndex(s => s.start === slot.start) &&
-                  timeSlots.findIndex(s => s.start === selectedRange.end) >=
-                  timeSlots.findIndex(s => s.start === slot.start);
+            {/* Divider */}
+            <div className="border-t border-border" />
 
-                const isPending = pendingSlot === slot.start;
+            {/* Time Slots Section */}
+            <div className="space-y-3">
+              <div className="flex items-center gap-2 text-sm font-medium">
+                <Clock className="w-4 h-4" />
+                <span>Waktu</span>
+              </div>
 
-                return (
-                  <Button
-                    key={slot.start}
-                    variant={isSelected ? "default" : isPending ? "secondary" : "outline"}
-                    className={`h-12 text-sm border-2 ${
-                      !slot.available ? 'opacity-30 cursor-not-allowed' : ''
-                    }`}
-                    disabled={!slot.available}
-                    onClick={() => handleSlotClick(slot.start)}
-                  >
-                    {slot.start}
-                  </Button>
-                );
-              })}
-            </div>
-
-            {/* Selection Summary */}
-            {selectedRange.start && selectedRange.end && (
-              <div className="bg-primary/10 p-4 rounded-lg border-2 border-primary/20">
-                <div className="flex items-center justify-between">
-                  <div>
-                    <p className="text-xs text-muted-foreground">Mulai</p>
-                    <p className="font-bold text-lg">{selectedRange.start}</p>
-                  </div>
-                  <div className="text-center">
-                    <p className="text-2xl">→</p>
-                    <p className="text-xs text-muted-foreground">{totalBlocks} blok</p>
-                  </div>
-                  <div className="text-right">
-                    <p className="text-xs text-muted-foreground">Selesai</p>
-                    <p className="font-bold text-lg">
-                      {format(addMinutes(parse(selectedRange.end, 'HH:mm', new Date()), settings?.consulting_block_duration_minutes || 30), 'HH:mm')}
-                    </p>
-                  </div>
+              {/* Info */}
+              {isToday(currentDate) && timeSlots.length === 0 ? (
+                <div className="bg-amber-50 dark:bg-amber-950 border-2 border-amber-200 dark:border-amber-800 p-4 rounded-lg text-center">
+                  <p className="text-sm text-amber-900 dark:text-amber-100">
+                    Tidak ada slot tersedia untuk sisa hari ini. Silakan pilih tanggal lain.
+                  </p>
                 </div>
-                <p className="text-center text-sm mt-2 text-primary font-medium">
-                  Durasi: {totalDuration} menit
-                </p>
-              </div>
-            )}
+              ) : timeSlots.length === 0 ? (
+                <div className="bg-muted p-4 rounded-lg text-center">
+                  <p className="text-sm text-muted-foreground">
+                    Tidak ada jadwal kerja untuk tanggal ini.
+                  </p>
+                </div>
+              ) : (
+                <>
+                  <div className="flex items-center gap-2 text-sm text-muted-foreground bg-muted p-3 rounded-lg">
+                    <Clock className="w-4 h-4" />
+                    <span>
+                      Klik slot untuk memilih durasi. Setiap slot = {settings?.consulting_block_duration_minutes || 30} menit
+                    </span>
+                  </div>
 
-            {/* Pending Slot */}
-            {pendingSlot && (
-              <div className="bg-amber-500/10 p-3 rounded-lg border-2 border-amber-500/20">
-                <p className="text-center text-sm">
-                  Klik lagi untuk konfirmasi slot: <strong>{pendingSlot}</strong>
-                </p>
-              </div>
-            )}
+                  {/* Time Slots Grid */}
+                  <div className="grid grid-cols-4 sm:grid-cols-6 md:grid-cols-8 gap-2">
+                    {timeSlots.map((slot) => {
+                      const isSelected = selectedRange.start && selectedRange.end &&
+                        timeSlots.findIndex(s => s.start === selectedRange.start) <=
+                        timeSlots.findIndex(s => s.start === slot.start) &&
+                        timeSlots.findIndex(s => s.start === selectedRange.end) >=
+                        timeSlots.findIndex(s => s.start === slot.start);
+
+                      const isPending = pendingSlot === slot.start;
+
+                      return (
+                        <Button
+                          key={slot.start}
+                          variant={isSelected ? "default" : isPending ? "secondary" : "outline"}
+                          className={`h-12 text-sm border-2 ${
+                            !slot.available ? 'opacity-30 cursor-not-allowed' : ''
+                          }`}
+                          disabled={!slot.available}
+                          onClick={() => handleSlotClick(slot.start)}
+                        >
+                          {slot.start}
+                        </Button>
+                      );
+                    })}
+                  </div>
+
+                  {/* Selection Summary */}
+                  {selectedRange.start && selectedRange.end && (
+                    <div className="bg-primary/10 p-4 rounded-lg border-2 border-primary/20">
+                      <div className="flex items-center justify-between">
+                        <div>
+                          <p className="text-xs text-muted-foreground">Mulai</p>
+                          <p className="font-bold text-lg">{selectedRange.start}</p>
+                        </div>
+                        <div className="text-center">
+                          <p className="text-2xl">→</p>
+                          <p className="text-xs text-muted-foreground">{totalBlocks} blok</p>
+                        </div>
+                        <div className="text-right">
+                          <p className="text-xs text-muted-foreground">Selesai</p>
+                          <p className="font-bold text-lg">
+                            {format(addMinutes(parse(selectedRange.end, 'HH:mm', new Date()), settings?.consulting_block_duration_minutes || 30), 'HH:mm')}
+                          </p>
+                        </div>
+                      </div>
+                      <p className="text-center text-sm mt-2 text-primary font-medium">
+                        Durasi: {totalDuration} menit
+                      </p>
+                    </div>
+                  )}
+
+                  {/* Pending Slot */}
+                  {pendingSlot && (
+                    <div className="bg-amber-500/10 p-3 rounded-lg border-2 border-amber-500/20">
+                      <p className="text-center text-sm">
+                        Klik lagi untuk konfirmasi slot: <strong>{pendingSlot}</strong>
+                      </p>
+                    </div>
+                  )}
+                </>
+              )}
+            </div>
 
             {/* Actions */}
             <div className="flex gap-2 justify-end">
@@ -302,7 +422,7 @@ export function TimeSlotPickerModal({
                 disabled={!selectedRange.start || !selectedRange.end}
                 className="shadow-sm"
               >
-                Simpan Waktu
+                Simpan Jadwal
               </Button>
             </div>
           </div>

src/pages/admin/AdminConsulting.tsx

@@ -132,11 +132,12 @@ export default function AdminConsulting() {
     setDialogOpen(true);
   };
 
-  const handleTimeSlotSelect = (startTime: string, endTime: string, totalBlocks: number, totalDuration: number) => {
+  const handleTimeSlotSelect = (startTime: string, endTime: string, totalBlocks: number, totalDuration: number, selectedDate: string) => {
     setEditStartTime(startTime);
     setEditEndTime(endTime);
     setEditTotalBlocks(totalBlocks);
     setEditTotalDuration(totalDuration);
+    setEditSessionDate(selectedDate);
     setTimeSlotPickerOpen(false);
   };
 
@@ -1089,7 +1090,7 @@ export default function AdminConsulting() {
           <TimeSlotPickerModal
             open={timeSlotPickerOpen}
             onClose={() => setTimeSlotPickerOpen(false)}
-            selectedDate={parseISO(selectedSession.session_date)}
+            selectedDate={parseISO(editSessionDate || selectedSession.session_date)}
             initialStartTime={editStartTime}
             initialEndTime={editEndTime}
             onSave={handleTimeSlotSelect}