- Refactor Profile and Login screens to use AuthContext for user data

- Enhance RequestPermitModal with multiple time-off types and validation
- Implement CalendarWidget for visualizing time-off requests
- Improve API error handling and token management
- Add utility functions for consistent date and time formatting
- Clean up unused mock data and update types

components/CalendarWidget.tsx

@@ -0,0 +1,109 @@
+import React, { useState } from 'react';
+import { View, Text, TouchableOpacity } from 'react-native';
+import { ChevronLeft, ChevronRight } from 'lucide-react-native';
+import { TimeOffRequest, TimeOffRequestType } from '@/types/types';
+
+interface CalendarWidgetProps {
+    events: TimeOffRequest[];
+    types: TimeOffRequestType[];
+}
+
+export default function CalendarWidget({ events, types }: CalendarWidgetProps) {
+    const [currentDate, setCurrentDate] = useState(new Date());
+
+    // Helpers per il calendario
+    const daysInMonth = new Date(currentDate.getFullYear(), currentDate.getMonth() + 1, 0).getDate();
+    const firstDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 1).getDay(); // 0 = Sun
+    const adjustedFirstDay = firstDayOfMonth === 0 ? 6 : firstDayOfMonth - 1; // 0 = Mon
+
+    const weekDays = ['Lun', 'Mar', 'Mer', 'Gio', 'Ven', 'Sab', 'Dom'];
+
+    const changeMonth = (increment: number) => {
+        const newDate = new Date(currentDate.setMonth(currentDate.getMonth() + increment));
+        setCurrentDate(new Date(newDate));
+    };
+
+    const getEventForDay = (day: number) => {
+        const year = currentDate.getFullYear();
+        const month = String(currentDate.getMonth() + 1).padStart(2, '0');
+        const dayStr = String(day).padStart(2, '0');
+        const dateStr = `${year}-${month}-${dayStr}`;
+
+        return events.find(event => {
+            // Logica semplice: controlla se la data cade nel range
+            // Nota: per una logica perfetta sui range lunghi, servirebbe un controllo più approfondito
+            if (event.timeOffRequestType.name === 'Permesso') return event.start_date === dateStr;
+            const end = event.end_date || event.start_date;
+            return dateStr >= event.start_date && dateStr <= end;
+        });
+    };
+
+    return (
+        <View className="bg-white rounded-[2rem] p-6 shadow-sm border border-gray-100">
+            {/* Header Mese */}
+            <View className="flex-row justify-between items-center mb-6">
+                <TouchableOpacity
+                    onPress={() => changeMonth(-1)}
+                    className="p-2 bg-gray-50 rounded-full"
+                >
+                    <ChevronLeft size={24} color="#374151" />
+                </TouchableOpacity>
+                <Text className="text-xl font-bold text-gray-800 capitalize">
+                    {currentDate.toLocaleString('it-IT', { month: 'long', year: 'numeric' })}
+                </Text>
+                <TouchableOpacity
+                    onPress={() => changeMonth(1)}
+                    className="p-2 bg-gray-50 rounded-full"
+                >
+                    <ChevronRight size={24} color="#374151" />
+                </TouchableOpacity>
+            </View>
+
+            {/* Week Header */}
+            <View className="flex-row justify-between mb-4">
+                {weekDays.map(day => (
+                    <Text key={day} className="w-10 text-center text-xs font-bold text-gray-400 uppercase">{day}</Text>
+                ))}
+            </View>
+
+            {/* Days Grid */}
+            <View className="flex-row flex-wrap gap-y-4">
+                {/* Empty slots for alignment */}
+                {Array.from({ length: adjustedFirstDay }).map((_, i) => (
+                    <View key={`empty-${i}`} style={{ width: '14.28%' }} />
+                ))}
+                {/* Days */}
+                {Array.from({ length: daysInMonth }).map((_, i) => {
+                    const day = i + 1;
+                    const event = getEventForDay(day);
+
+                    let bgClass = 'bg-transparent';
+                    let textClass = 'text-gray-700';
+                    let borderClass = 'border-transparent';
+
+                    const bgColor = event?.timeOffRequestType?.color ? `${event.timeOffRequestType.color}25` : 'transparent';
+                    const borderColor = event?.timeOffRequestType?.color || 'transparent';
+                    const textColor = event ? event.timeOffRequestType?.color : '#374151';
+
+                    return (
+                        <View key={day} style={{ width: '14.28%' }} className="items-center">
+                            <View className={`w-10 h-10 rounded-full items-center justify-center border`} style={{backgroundColor: bgColor, borderColor: borderColor }}>
+                                <Text className={`text-sm ${event ? 'font-bold' : ''}`} style={{ color: textColor }}>{day}</Text>
+                            </View>
+                        </View>
+                    );
+                })}
+            </View>
+
+            {/* Legenda */}
+            <View className="flex-row flex-wrap justify-center gap-4 mt-8 pt-4 border-t border-gray-100">
+                {types.map((type) => (
+                    <View key={type.id} className="flex-row items-center" >
+                        <View className={`w-3 h-3 rounded-full mr-2`} style={{ backgroundColor: type.color }} />
+                        <Text className="text-sm font-medium text-gray-500">{type.name}</Text>
+                    </View>
+                ))} 
+            </View>
+        </View>
+    );
+}