fund distribution

package-lock.json

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+        "react-native": ">=0.78",
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       "version": "6.3.1",
       "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-6.3.1.tgz",
       "integrity": "sha512-DzcswPr252wEr7Qz8AyAVbfyBDKLoYp6eRA1We2Fa9qirRFSdtkP5sHr3yglDKy2BbA0fd2T+j/CUSKes3FeVQ==",
-      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "regenerate": "^1.4.2",
@@ -13887,14 +14036,12 @@
       "version": "0.8.0",
       "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.8.0.tgz",
       "integrity": "sha512-RvwtGe3d7LvWiDQXeQw8p5asZUmfU1G/l6WbUXeHta7Y2PEIvBTwH6E2EfmYUK8pxcxEdEmaomqyp0vZZ7C+3Q==",
-      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/regjsparser": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/regjsparser/-/regjsparser-0.12.0.tgz",
       "integrity": "sha512-cnE+y8bz4NhMjISKbgeVJtqNbtf5QpjZP+Bslo+UqkIt9QPnX9q095eiRRASJG1/tz6dlNr6Z5NsBiWYokp6EQ==",
-      "devOptional": true,
       "license": "BSD-2-Clause",
       "dependencies": {
         "jsesc": "~3.0.2"
@@ -13907,7 +14054,6 @@
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-3.0.2.tgz",
       "integrity": "sha512-xKqzzWXDttJuOcawBt4KnKHHIf5oQ/Cxax+0PWFG+DFDgHNAdi+TXECADI+RYiFUMmx8792xsMbbgXj4CwnP4g==",
-      "devOptional": true,
       "license": "MIT",
       "bin": {
         "jsesc": "bin/jsesc"
@@ -15185,7 +15331,6 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-2.0.1.tgz",
       "integrity": "sha512-dA8WbNeb2a6oQzAQ55YlT5vQAWGV9WXOsi3SskE3bcCdM0P4SDd+24zS/OCacdRq5BkdsRj9q3Pg6YyQoxIGqg==",
-      "devOptional": true,
       "license": "MIT",
       "engines": {
         "node": ">=4"
@@ -15195,7 +15340,6 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-2.0.0.tgz",
       "integrity": "sha512-5kaZCrbp5mmbz5ulBkDkbY0SsPOjKqVS35VpL9ulMPfSl0J0Xsm+9Evphv9CoIZFwre7aJoa94AY6seMKGVN5Q==",
-      "devOptional": true,
       "license": "MIT",
       "dependencies": {
         "unicode-canonical-property-names-ecmascript": "^2.0.0",
@@ -15209,7 +15353,6 @@
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-2.2.1.tgz",
       "integrity": "sha512-JQ84qTuMg4nVkx8ga4A16a1epI9H6uTXAknqxkGF/aFfRLw1xC/Bp24HNLaZhHSkWd3+84t8iXnp1J0kYcZHhg==",
-      "devOptional": true,
       "license": "MIT",
       "engines": {
         "node": ">=4"
@@ -15219,7 +15362,6 @@
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-2.2.0.tgz",
       "integrity": "sha512-hpbDzxUY9BFwX+UeBnxv3Sh1q7HFxj48DTmXchNgRa46lO8uj3/1iEn3MiNUYTg1g9ctIqXCCERn8gYZhHC5lQ==",
-      "devOptional": true,
       "license": "MIT",
       "engines": {
         "node": ">=4"

package.json

@@ -30,6 +30,7 @@
     "react-native-calendars": "^1.1313.0",
     "react-native-dialog": "^9.3.0",
     "react-native-elements": "^3.4.3",
+    "react-native-fast-confetti": "^1.1.1",
     "react-native-image-picker": "^8.2.1",
     "react-native-keychain": "^10.0.0",
     "react-native-linear-gradient": "^2.8.3",

src/navigation/AppNavigator.tsx

@@ -19,6 +19,7 @@ import ManageJoinedGroup from "../screens/management/ManageJoinedGroup";
 import InviteScreen from "../screens/InviteScreen";
 import ManagementTabNavigation from "../screens/management/ManagementTabNavigation";
 import TransactionsList from "../screens/transaction/TransactionList";
+import RandomSelectUserScreen from "../screens/management/RandomSelectUserScreen";
 
 export type RootStackParamList = {
   Splash: undefined;
@@ -91,6 +92,7 @@ const linking = {
         <Stack.Screen name="Invite" component={InviteScreen} options={{ headerShown: false }} />
         <Stack.Screen name="ManagementTabs" component={ManagementTabNavigation} options={{ headerShown: false }} />
         <Stack.Screen name="TransactionList" component={TransactionsList} options={{ headerShown: false }} />
+                <Stack.Screen name="RandomSelectUserScreen" component={RandomSelectUserScreen} options={{ headerShown: false }} />
       </Stack.Navigator>
     </NavigationContainer>
   );

src/screens/management/EditGroupScreen.tsx

@@ -21,6 +21,7 @@ import { CompositeScreenProps } from '@react-navigation/native';
 import { BottomTabScreenProps } from '@react-navigation/bottom-tabs';
 import { ManagementTabParamList } from './ManagementTabNavigation'; // Adjust path
 
+
 // --- Type Definitions ---
 interface Participant {
   id: string;
@@ -30,6 +31,7 @@ interface Participant {
   role: 'ORGANIZER' | 'USER';
 }
 
+
 export interface GroupDetails {
   id: string;
   groupName: string;
@@ -53,6 +55,7 @@ export interface GroupDetails {
   participants: Participant[];
 }
 
+
 export interface EditGroupPayload {
   groupName: string;
   description: string;
@@ -66,18 +69,22 @@ export interface EditGroupPayload {
   lateFeeValue: number | null;
 }
 
+
 // Correct props for a screen inside a nested Tab Navigator
 type EditGroupScreenProps = CompositeScreenProps<
   BottomTabScreenProps<ManagementTabParamList, 'EditGroup'>,
   NativeStackScreenProps<RootStackParamList>
 >;
 
+
 type EditingCard = 'groupInfo' | 'financialRules' | 'configuration' | null;
 
+
 // --- Main Screen Component ---
 const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
   const { groupId } = route.params;
 
+
   const [editingCard, setEditingCard] = useState<EditingCard>(null);
   const [groupDetails, setGroupDetails] = useState<GroupDetails | null>(null);
   const [editableData, setEditableData] = useState<EditGroupPayload>({
@@ -99,7 +106,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
   const [inviting, setInviting] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
-  // ... (All your handler functions: initializeEditableData, fetchGroupDetails, handleCancel, handleSave, etc. remain the same)
+
   const initializeEditableData = (data: GroupDetails) => {
     setEditableData({
       groupName: data.groupName,
@@ -115,6 +122,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     });
   };
 
+
   const fetchGroupDetails = useCallback(async () => {
     setLoading(true);
     setError(null);
@@ -134,10 +142,12 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     }
   }, [groupId]);
 
+
   useEffect(() => {
     fetchGroupDetails();
   }, [fetchGroupDetails]);
 
+
   const handleCancel = () => {
     if (groupDetails) {
         initializeEditableData(groupDetails);
@@ -145,9 +155,11 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     setEditingCard(null);
   };
 
+
   const handleSave = async () => {
     if (!groupDetails) return;
 
+
     if (editableData.maxParticipants < groupDetails.totalParticipants) {
         Alert.alert('Invalid Input', `Max participants cannot be less than the current count (${groupDetails.totalParticipants}).`);
         return;
@@ -166,9 +178,11 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     }
   };
 
+
   const handleStartGroup = async () => {
     if (!groupDetails) return;
 
+
     Alert.alert(
       "Confirm Start",
       "Are you sure you want to start this group? This action cannot be undone.",
@@ -200,6 +214,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     try {
         const response = await apiCall(`https://exotic-humpback-mistakenly.ngrok-free.app/api/invite/generate?groupId=${groupDetails.id}`, 'GET') as { data?: string };
 
+
         const inviteLink = response.data;
         
         if (inviteLink) {
@@ -220,12 +235,13 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     }
   };
 
+
   const handleUpdateField = (field: keyof EditGroupPayload, value: any) => {
     setEditableData(prev => ({ ...prev, [field]: value }));
   };
 
-  // ... (renderField and renderCard functions also remain the same)
+
-  const renderField = (field: keyof EditGroupPayload, label: string, displayValue: string | number, isEditing: boolean) => {
+  const renderField = (field: keyof EditGroupPayload, label: string, displayValue: string | number, isEditing: boolean, isEditable: boolean) => {
     const commonInputProps = { style: styles.input, placeholderTextColor: "#9CA3AF" };
     
     const getInputForField = () => {
@@ -276,6 +292,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
   const renderCard = (title: string, fields: Array<{ field: keyof EditGroupPayload, label: string, displayValue: () => string | number }>, cardKey: EditingCard) => {
     const isEditingThisCard = editingCard === cardKey;
 
+
     return (
         <View style={styles.card}>
             <View style={styles.cardHeader}>
@@ -288,7 +305,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
             </View>
             
             {fields.map(({ field, label, displayValue }) => 
-                renderField(field, label, displayValue(), isEditingThisCard)
+                renderField(field, label, displayValue(), isEditingThisCard, isEditable)
             )}
             
             {isEditingThisCard && (
@@ -305,16 +322,18 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
     );
   }
 
+
   if (loading) return <View style={styles.centered}><ActivityIndicator size="large" color="#4F46E5" /></View>;
   if (error) return <View style={styles.centered}><Text style={styles.errorText}>{error}</Text></View>;
   if (!groupDetails) return null;
 
+
   const isEditable = groupDetails.status === 'PENDING' || groupDetails.status === 'APPROVED';
   const isInvitable = groupDetails.status === 'APPROVED';
   const canStartGroup = groupDetails.status === 'APPROVED' && groupDetails.totalParticipants >= groupDetails.minParticipants;
 
+
   return (
-    // Use AppView as the root container with flex: 1
     <AppView style={{ flex: 1, paddingHorizontal: 0 }}>
       <View style={styles.headerContainer}>
         <Text style={styles.headerTitle}>Manage Group</Text>
@@ -325,6 +344,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
         )}
       </View>
 
+
       <ScrollView
         style={styles.container}
         contentContainerStyle={styles.contentContainer}
@@ -335,20 +355,29 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
             { field: 'description', label: 'Description', displayValue: () => groupDetails.description },
         ], 'groupInfo')}
 
-        {renderCard('Financial Rules', [
+
+        {groupDetails.status === 'ACTIVE' ? 
+            renderCard('Financial Rules', [
+                { field: 'contributionAmount', label: 'Contribution', displayValue: () => `₹${groupDetails.contributionAmount.toLocaleString('en-IN')}` },
+                { field: 'latePaymentCharge', label: 'Late Fee', displayValue: () => `₹${(groupDetails.latePaymentCharge ?? 0).toLocaleString('en-IN')}` },
+                { field: 'maxParticipants', label: 'Current Participants', displayValue: () => `${groupDetails.totalParticipants}` },
+            ], 'financialRules')
+        : 
+            renderCard('Financial Rules', [
                 { field: 'contributionAmount', label: 'Contribution', displayValue: () => `₹${groupDetails.contributionAmount.toLocaleString('en-IN')}` },
                 { field: 'maxParticipants', label: 'Max Participants', displayValue: () => `${groupDetails.totalParticipants} / ${groupDetails.maxParticipants}` },
                 { field: 'minParticipants', label: 'Min Participants', displayValue: () => `${groupDetails.minParticipants}` },
                 { field: 'latePaymentCharge', label: 'Late Fee', displayValue: () => `₹${(groupDetails.latePaymentCharge ?? 0).toLocaleString('en-IN')}` },
-        ], 'financialRules')}
+            ], 'financialRules')
+        }
+
 
         {renderCard('Configuration', [
             { field: 'cycleType', label: 'Payment Cycle', displayValue: () => groupDetails.cycleType },
-            { field: 'customCycleDays', label: 'Custom Days', displayValue: () => `${groupDetails.customCycleDays ?? ''} days` },
+            ...(groupDetails.cycleType === 'CUSTOM' ? [{ field: 'customCycleDays' as keyof EditGroupPayload, label: 'Custom Days', displayValue: () => `${groupDetails.customCycleDays} days` }] : []),
             { field: 'visibility', label: 'Visibility', displayValue: () => groupDetails.visibility },
         ], 'configuration')}
         
-        {/* Participants Card ... */}
         <View style={styles.card}>
             <Text style={styles.cardTitle}>Participants ({groupDetails.totalParticipants})</Text>
             {groupDetails.participants.length > 0 ? (
@@ -369,8 +398,7 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
         </View>
       </ScrollView>
 
-      {/* --- FLOATING BUTTON AREA --- */}
+
-      {/* This View is a sibling of ScrollView, allowing it to float on top */}
       {canStartGroup && (
         <View style={styles.floatingButtonContainer}>
           <TouchableOpacity
@@ -390,10 +418,9 @@ const EditGroupScreen: React.FC<EditGroupScreenProps> = ({ route }) => {
   );
 };
 
-// --- Styles ---
+
 const styles = StyleSheet.create({
   container: { flex: 1, backgroundColor: '#F3F4F6' },
-  // Added more paddingBottom to ensure content doesn't hide behind the button AND the tab bar
   contentContainer: { padding: 16, paddingTop: 0, paddingBottom: 150 }, 
   centered: { flex: 1, justifyContent: 'center', alignItems: 'center' },
   errorText: { color: '#EF4444', fontSize: 16, textAlign: 'center' },
@@ -437,15 +464,13 @@ const styles = StyleSheet.create({
   cancelButton: { backgroundColor: '#E5E7EB' },
   inviteButton: { backgroundColor: colors.primary },
   buttonText: { color: '#ffffffff', fontSize: 15, fontWeight: '600' },
-
-  // --- FLOATING BUTTON STYLES ---
   floatingButtonContainer: {
     position: 'absolute',
-    bottom: 85, // Positioned above the tab bar
+    bottom: 85,
     left: 20,
     right: 20,
-    alignItems: 'center', // Center the button horizontally
+    alignItems: 'center',
-    zIndex: 1, // Ensure it's on top
+    zIndex: 1,
   },
   activateButton: {
     backgroundColor: colors.pastelOrange,
@@ -457,7 +482,7 @@ const styles = StyleSheet.create({
     shadowOffset: { width: 0, height: 4 },
     shadowOpacity: 0.3,
     shadowRadius: 4,
-    width: '90%', // Adjust width as needed
+    width: '90%',
     alignItems: 'center',
   },
   activateButtonText: {
@@ -467,4 +492,5 @@ const styles = StyleSheet.create({
   },
 });
 
+
 export default EditGroupScreen;

src/screens/management/Payments.tsx

@@ -1,15 +1,15 @@
 import React, { useEffect, useState, useCallback } from 'react';
-import { View, Text, StyleSheet, ActivityIndicator, ScrollView, RefreshControl, Alert, TouchableOpacity } from 'react-native';
+import { View, Text, StyleSheet, ActivityIndicator, ScrollView, RefreshControl, Alert, TouchableOpacity, Modal, TextInput } from 'react-native';
-import { useRoute, useNavigation, RouteProp } from '@react-navigation/native';
+import { useRoute, RouteProp } from '@react-navigation/native';
-import { StackNavigationProp } from '@react-navigation/stack';
 import { Ionicons } from "@react-native-vector-icons/ionicons";
 import colors from '../../components/colors';
 import AppView from '../../components/AppView';
 import { apiCall } from '../../utils/ApiHelper';
 
-// --- TYPE DEFINITIONS ---
+// --- CONSTANTS ---
+const API_BASE_URL = 'https://exotic-humpback-mistakenly.ngrok-free.app/api/payments';
 
-// Generic API Response Wrapper
+// --- TYPE DEFINITIONS ---
 interface ApiResponse<T> {
     status: 'success' | 'error';
     data: T;
@@ -17,69 +17,54 @@ interface ApiResponse<T> {
     statusCode: number;
 }
 
-// Type for an individual participant in the payment details
 interface Participant {
     userId: string;
-    userName: string;
     firstName: string;
     lastName: string;
     mobile: string;
     contributionAmount: number;
     paidAmount: number;
+    payAmount?: number;
     status: 'SUCCESS' | 'PENDING';
     lateFee: number;
-    daysLate: number;
     lateFeeWaived: boolean;
 }
 
-// Fully typed payment details based on your JSON response
 interface PaymentDetails {
     groupId: string;
     groupName: string;
     currentCycle: number;
-    cycleType: string;
     contributionAmount: number;
-    totalContributedAmount: number;
-    lateFeeMode: string;
-    lateFeeValue: number;
-    notReceivedAmount: number;
-    totalLateFee: number;
     totalDueWithLateFee: number;
     participants: Participant[];
 }
 
-// Assuming your navigation stack params look something like this
+type PaymentStackParamList = { Payments: { groupId: string } };
-type PaymentStackParamList = {
-    Payments: { groupId: string };
-};
-
 type PaymentsRouteProp = RouteProp<PaymentStackParamList, 'Payments'>;
-type PaymentsNavigationProp = StackNavigationProp<PaymentStackParamList>;
 
 const Payments: React.FC = () => {
     const route = useRoute<PaymentsRouteProp>();
-    const navigation = useNavigation<PaymentsNavigationProp>();
     const { groupId } = route.params;
 
     const [paymentDetails, setPaymentDetails] = useState<PaymentDetails | null>(null);
     const [loading, setLoading] = useState(true);
     const [refreshing, setRefreshing] = useState(false);
     
+    // State for the waiver modal
+    const [isModalVisible, setModalVisible] = useState(false);
+    const [currentParticipant, setCurrentParticipant] = useState<Participant | null>(null);
+    const [waiverAmount, setWaiverAmount] = useState('');
+
     const fetchPaymentDetails = useCallback(async () => {
         if (!refreshing) setLoading(true);
         try {
-            const response = await apiCall(
+            const response = await apiCall(`${API_BASE_URL}/current/payment/details/${groupId}`, 'GET') as ApiResponse<PaymentDetails>;
-                `https://exotic-humpback-mistakenly.ngrok-free.app/api/payments/current/payment/details/${groupId}`,
-                'GET'
-            ) as ApiResponse<PaymentDetails>;
-
             if (response && response.statusCode === 200) {
                 setPaymentDetails(response.data);
             } else {
-                Alert.alert("Error", response?.message || "Failed to fetch payment details.");
+                Alert.alert("Error", response?.message || "Failed to fetch details.");
             }
         } catch (error: any) {
-            console.error("Fetch payment details error:", error);
             Alert.alert("Error", error.message || "An unexpected error occurred.");
         } finally {
             setLoading(false);
@@ -91,205 +76,183 @@ const Payments: React.FC = () => {
         fetchPaymentDetails();
     }, [fetchPaymentDetails]);
 
-    const onRefresh = () => {
+    const onRefresh = useCallback(() => {
         setRefreshing(true);
+        fetchPaymentDetails();
+    }, [fetchPaymentDetails]);
+
+    const openWaiverDialog = (participant: Participant) => {
+        setCurrentParticipant(participant);
+        setWaiverAmount('');
+        setModalVisible(true);
+    };
+
+    // --- UPDATED: handleWaiveFee now uses the correct API endpoint ---
+    const handleWaiveFee = async () => {
+        if (!currentParticipant || !paymentDetails) return;
+        
+        const amountToWaive = parseFloat(waiverAmount);
+        
+        if (isNaN(amountToWaive) || amountToWaive <= 0) {
+            Alert.alert("Invalid Input", "Please enter a waiver amount greater than zero.");
+            return;
+        }
+
+        if (amountToWaive > currentParticipant.lateFee) {
+            Alert.alert("Invalid Amount", `Waiver cannot exceed the current late fee of ₹${currentParticipant.lateFee}.`);
+            return;
+        }
+
+        try {
+            // Construct the exact URL as provided
+            const url = `${API_BASE_URL}/groups/${groupId}/cycles/${paymentDetails.currentCycle}/waive/${currentParticipant.userId}?amountToWaive=${amountToWaive}`;
+
+            const response = await apiCall(url, 'PUT', {}); // Body is empty as amount is in URL
+
+            if (response && response.statusCode === 200) {
+                Alert.alert("Success", `₹${amountToWaive} has been waived successfully.`);
+                setModalVisible(false);
+                onRefresh(); // Refresh data to reflect the change
+            } else {
+                throw new Error(response?.message || "Failed to apply waiver.");
+            }
+        } catch (error: any) {
+            Alert.alert("API Error", error.message);
+        }
     };
 
-    // --- ENHANCED: renderParticipant now shows late fee details ---
     const renderParticipant = (participant: Participant) => {
         const isPending = participant.status === 'PENDING';
+        const canWaive = isPending && participant.lateFee > 0;
+
         return (
             <View key={participant.userId} style={styles.participantCard}>
                 <View style={styles.participantInfo}>
                     <Text style={styles.participantName}>{participant.firstName} {participant.lastName}</Text>
                     <Text style={styles.participantMobile}>{participant.mobile}</Text>
                 </View>
+
                 <View style={styles.paymentStatus}>
-                    <Text style={[
+                    <Text style={[styles.statusText, { color: isPending ? colors.warning : colors.success }]}>
-                        styles.statusText,
-                        { color: isPending ? '#e0d626ff' : '#18b107ff' }
-                    ]}>
                         {participant.status}
                     </Text>
                     <Text style={styles.amountText}>
-                        {isPending ?`₹${participant.payAmount}`:`₹${participant.paidAmount}`}
+                        {isPending ? `₹${participant.payAmount || 0}` : `₹${participant.paidAmount}`}
                     </Text>
-
+                    {isPending && participant.lateFee > 0 && (
-                    {/* --- NEW: Conditionally render late payment stats --- */}
-                    {isPending && participant.daysLate > 0 && (
-                        <View style={styles.lateFeeContainer}>
                         <Text style={styles.lateFeeText}>Late Fee: ₹{participant.lateFee}</Text>
-                            <Text style={styles.lateFeeText}>Days Late: {participant.daysLate}</Text>
+                    )}
+                    {participant.lateFee === 0 && participant.lateFeeWaived && <Text style={styles.waivedText}>Fee Waived</Text>}
                 </View>
+                
+                <View style={styles.menuContainer}>
+                    {canWaive && (
+                        <TouchableOpacity onPress={() => openWaiverDialog(participant)}>
+                            <Ionicons name="ellipsis-vertical" size={22} color="#6c757d" />
+                        </TouchableOpacity>
                     )}
                 </View>
             </View>
         );
     };
     
-    if (loading && !refreshing) {
-        return <ActivityIndicator style={styles.centered} size="large" color={colors.primary} />;
-    }
-
-    if (!paymentDetails) {
-        return (
-            <View style={styles.centered}>
-                <Text>No payment details found.</Text>
-                <TouchableOpacity onPress={fetchPaymentDetails} style={styles.retryButton}>
-                    <Text style={styles.retryButtonText}>Tap to retry</Text>
-                </TouchableOpacity>
-            </View>
-        );
-    }
-
     return (
         <AppView paddingHorizontal={0}>
+            <Modal
+                transparent={true}
+                visible={isModalVisible}
+                animationType="fade"
+                onRequestClose={() => setModalVisible(false)}
+            >
+                <View style={styles.modalOverlay}>
+                    <View style={styles.modalContainer}>
+                        <Text style={styles.modalTitle}>Waive Late Fee</Text>
+                        <Text style={styles.modalSubtitle}>
+                            For {currentParticipant?.firstName}. Current late fee is ₹{currentParticipant?.lateFee}.
+                        </Text>
+                        <TextInput
+                            style={styles.input}
+                            keyboardType="numeric"
+                            value={waiverAmount}
+                            onChangeText={setWaiverAmount}
+                            placeholder="Enter amount to waive"
+                        />
+                        <View style={styles.modalButtonContainer}>
+                            <TouchableOpacity style={[styles.modalButton, styles.cancelButton]} onPress={() => setModalVisible(false)}>
+                                <Text style={styles.cancelButtonText}>Cancel</Text>
+                            </TouchableOpacity>
+                            <TouchableOpacity style={[styles.modalButton, styles.saveButton]} onPress={handleWaiveFee}>
+                                <Text style={styles.saveButtonText}>Apply Waiver</Text>
+                            </TouchableOpacity>
+                        </View>
+                    </View>
+                </View>
+            </Modal>
+
             <ScrollView
                 style={styles.container}
-                refreshControl={<RefreshControl refreshing={refreshing} onRefresh={onRefresh} colors={[colors.primary]} tintColor={colors.primary} />}
+                refreshControl={<RefreshControl refreshing={refreshing} onRefresh={onRefresh} />}
             >
+                {loading && !refreshing ? (
+                    <ActivityIndicator style={{marginTop: 50}} size="large" color={colors.primary} />
+                ) : (
+                    <>
                         <View style={styles.header}>
-                    <Text style={styles.headerTitle}>{paymentDetails.groupName}</Text>
+                            <Text style={styles.headerTitle}>{paymentDetails?.groupName}</Text>
                         </View>
-
                         <View style={styles.summaryContainer}>
                             <View style={styles.summaryBox}>
-                        <Text style={styles.summaryLabel}>Current Cycle</Text>
+                                <Text style={styles.summaryLabel}>Cycle</Text>
-                        <Text style={styles.summaryValue}>{paymentDetails.currentCycle}</Text>
+                                <Text style={styles.summaryValue}>{paymentDetails?.currentCycle}</Text>
                             </View>
                             <View style={styles.summaryBox}>
                                 <Text style={styles.summaryLabel}>Contribution</Text>
-                        <Text style={styles.summaryValue}>₹{paymentDetails.contributionAmount}</Text>
+                                <Text style={styles.summaryValue}>₹{paymentDetails?.contributionAmount}</Text>
                             </View>
                             <View style={styles.summaryBox}>
                                 <Text style={styles.summaryLabel}>Total Due</Text>
-                        <Text style={[styles.summaryValue, { color: colors.danger }]}>₹{paymentDetails.totalDueWithLateFee}</Text>
+                                <Text style={[styles.summaryValue, { color: colors.danger }]}>₹{paymentDetails?.totalDueWithLateFee}</Text>
                             </View>
                         </View>
-
                         <Text style={styles.sectionTitle}>Participants</Text>
-                {paymentDetails.participants.map(renderParticipant)}
+                        {paymentDetails?.participants.map(renderParticipant)}
+                    </>
+                )}
             </ScrollView>
         </AppView>
     );
 };
 
 const styles = StyleSheet.create({
-    centered: {
+    container: { flex: 1, backgroundColor: '#f4f6f8' },
-        flex: 1,
+    header: { padding: 20, paddingBottom: 15 },
-        justifyContent: 'center',
+    headerTitle: { color: '#000000', fontSize: 24, fontWeight: 'bold' },
-        alignItems: 'center',
+    summaryContainer: { flexDirection: 'row', justifyContent: 'space-around', padding: 20, backgroundColor: '#fff', marginHorizontal: 15, borderRadius: 12, elevation: 2 },
-        backgroundColor: '#f4f6f8',
+    summaryBox: { alignItems: 'center' },
-    },
+    summaryLabel: { fontSize: 14, color: '#6c757d', marginBottom: 4 },
-    container: {
+    summaryValue: { fontSize: 18, fontWeight: '700', color: colors.primary },
-        flex: 1,
+    sectionTitle: { fontSize: 20, fontWeight: 'bold', marginLeft: 20, marginTop: 20, marginBottom: 10 },
-        backgroundColor: '#f4f6f8',
+    participantCard: { backgroundColor: '#fff', marginHorizontal: 15, marginBottom: 10, borderRadius: 10, padding: 15, flexDirection: 'row', alignItems: 'center', elevation: 1 },
-    },
+    participantInfo: { flex: 1 },
-    header: {
+    participantName: { fontSize: 16, fontWeight: '600' },
-        padding: 20,
+    participantMobile: { fontSize: 14, color: '#6c757d', marginTop: 2 },
-        paddingBottom: 15,
+    paymentStatus: { alignItems: 'flex-end', marginHorizontal: 10 },
-    },
+    statusText: { fontSize: 14, fontWeight: 'bold', textTransform: 'uppercase' },
-    headerTitle: {
+    amountText: { fontSize: 14, color: '#495057', marginTop: 2 },
-        color: '#000000',
+    lateFeeText: { fontSize: 13, color: colors.danger, fontWeight: '600', marginTop: 4 },
-        fontSize: 24,
+    waivedText: { fontSize: 13, color: colors.success, fontWeight: '600', marginTop: 4 },
-        fontWeight: 'bold',
+    menuContainer: { justifyContent: 'center', alignItems: 'center', minWidth: 25 },
-    },
+    modalOverlay: { flex: 1, backgroundColor: 'rgba(0, 0, 0, 0.5)', justifyContent: 'center', alignItems: 'center' },
-    summaryContainer: {
+    modalContainer: { width: '85%', backgroundColor: 'white', borderRadius: 15, padding: 20, elevation: 10 },
-        flexDirection: 'row',
+    modalTitle: { fontSize: 20, fontWeight: 'bold', color: '#333', marginBottom: 5 },
-        justifyContent: 'space-around',
+    modalSubtitle: { fontSize: 14, color: '#666', marginBottom: 20 },
-        padding: 20,
+    input: { width: '100%', borderWidth: 1, borderColor: '#ddd', borderRadius: 8, paddingHorizontal: 15, paddingVertical: 12, fontSize: 16, marginBottom: 20 },
-        backgroundColor: '#fff',
+    modalButtonContainer: { flexDirection: 'row', justifyContent: 'flex-end' },
-        marginHorizontal: 15,
+    modalButton: { paddingVertical: 10, paddingHorizontal: 20, borderRadius: 8, marginLeft: 10 },
-        borderRadius: 12,
+    cancelButton: { backgroundColor: '#f0f0f0' },
-        elevation: 2,
+    cancelButtonText: { color: '#333', fontWeight: 'bold' },
-        shadowColor: '#000',
+    saveButton: { backgroundColor: colors.primary },
-        shadowOpacity: 0.05,
+    saveButtonText: { color: 'white', fontWeight: 'bold' },
-        shadowRadius: 10,
-    },
-    summaryBox: {
-        alignItems: 'center',
-    },
-    summaryLabel: {
-        fontSize: 14,
-        color: '#6c757d',
-        marginBottom: 4,
-    },
-    summaryValue: {
-        fontSize: 18,
-        fontWeight: '700',
-        color: colors.primary,
-    },
-    sectionTitle: {
-        fontSize: 20,
-        fontWeight: 'bold',
-        marginLeft: 20,
-        marginTop: 20,
-        marginBottom: 10,
-        color: '#343a40',
-    },
-    participantCard: {
-        backgroundColor: '#fff',
-        marginHorizontal: 15,
-        marginBottom: 10,
-        borderRadius: 10,
-        padding: 15,
-        flexDirection: 'row',
-        justifyContent: 'space-between',
-        alignItems: 'center',
-        elevation: 1,
-    },
-    participantInfo: {
-        flex: 1,
-    },
-    participantName: {
-        fontSize: 16,
-        fontWeight: '600',
-        color: '#212529',
-    },
-    participantMobile: {
-        fontSize: 14,
-        color: '#6c757d',
-        marginTop: 2,
-    },
-    paymentStatus: {
-        alignItems: 'flex-end',
-    },
-    statusText: {
-        fontSize: 14,
-        fontWeight: 'bold',
-        textTransform: 'uppercase',
-    },
-    amountText: {
-        fontSize: 14,
-        color: '#495057',
-        marginTop: 2,
-    },
-    // --- NEW STYLES ---
-    lateFeeContainer: {
-        marginTop: 8,
-        paddingTop: 5,
-        borderTopWidth: 1,
-        borderTopColor: '#e9ecef',
-        alignItems: 'flex-end',
-    },
-    lateFeeText: {
-        fontSize: 13,
-        color: colors.danger,
-        fontWeight: '600',
-    },
-    retryButton: {
-        marginTop: 20,
-        paddingVertical: 10,
-        paddingHorizontal: 20,
-        borderRadius: 8,
-        backgroundColor: colors.primary,
-    },
-    retryButtonText: {
-        color: '#fff',
-        fontSize: 16,
-        fontWeight: 'bold',
-    },
 });
 
 export default Payments;
-

src/screens/management/RandomSelectUserScreen.tsx

@@ -0,0 +1,248 @@
+import React, { useState, useEffect, useRef } from 'react';
+import { View, Text, StyleSheet, TouchableOpacity, Animated, Easing, SafeAreaView, Dimensions, Alert } from 'react-native';
+import { Confetti, ConfettiMethods } from 'react-native-fast-confetti';
+
+import AppView from '../../components/AppView';
+
+
+// --- PROPS & TYPE DEFINITIONS ---
+export interface RandomWinnerScreenProps {
+  participants: Participant[];
+  excludedParticipantIds: string[];
+}
+
+export interface Participant {
+  id: string;
+  name: string;
+}
+
+// --- CONSTANTS ---
+const { width } = Dimensions.get('window');
+const ITEM_HEIGHT = 70; // Height of each name item
+const ANIMATION_DURATION = 8000; // 8 seconds for suspense
+const SHUFFLE_MULTIPLIER = 5; // Repeats the list for a longer scroll effect
+
+const RandomSelectUserScreen: React.FC = () => {
+  // --- MOCK DATA (Replace with navigation props) ---
+  const mockProps: RandomWinnerScreenProps = {
+    participants: [
+      { id: '1', name: 'Vinay M.' },
+      { id: '2', name: 'Nitesh Y.' },
+      { id: '3', name: 'Alice' },
+      { id: '4', name: 'Bob' },
+      { id: '5', name: 'Charlie' },
+      { id: '6', name: 'David' },
+      { id: '7', name: 'Eve' },
+    ],
+    excludedParticipantIds: ['4'], // Exclude Bob
+  };
+  // --- END MOCK DATA ---
+
+  const { participants, excludedParticipantIds } = mockProps;
+
+  const [eligibleParticipants, setEligibleParticipants] = useState<Participant[]>([]);
+  const [isSelecting, setIsSelecting] = useState(false);
+  const [winner, setWinner] = useState<Participant | null>(null);
+  const [animationList, setAnimationList] = useState<Participant[]>([]);
+  
+  const scrollY = useRef(new Animated.Value(0)).current;
+  const confettiRef = useRef<ConfettiMethods>(null);
+
+  // Filter participants
+  useEffect(() => {
+    const eligible = participants.filter(p => !excludedParticipantIds.includes(p.id));
+    setEligibleParticipants(eligible);
+  }, [participants, excludedParticipantIds]);
+
+  const handleStartSelection = () => {
+    if (eligibleParticipants.length < 2) {
+      Alert.alert('Not enough eligible participants.');
+      return;
+    }
+
+    setIsSelecting(true);
+    setWinner(null);
+    scrollY.setValue(0);
+
+    // 1. Secretly select winner
+    const winnerIndex = Math.floor(Math.random() * eligibleParticipants.length);
+    const selectedWinner = eligibleParticipants[winnerIndex];
+
+    // 2. Create long, shuffled list for animation
+    let listForAnimation: Participant[] = [];
+    for (let i = 0; i < SHUFFLE_MULTIPLIER; i++) {
+        const shuffled = [...eligibleParticipants].sort(() => Math.random() - 0.5);
+        listForAnimation.push(...shuffled);
+    }
+    
+    // 3. Place winner at the end
+    listForAnimation.push(selectedWinner);
+    setAnimationList(listForAnimation);
+
+    // 4. Calculate final scroll position
+    const finalY = -(listForAnimation.length - 1) * ITEM_HEIGHT;
+
+    // 5. Start animation
+    Animated.timing(scrollY, {
+      toValue: finalY,
+      duration: ANIMATION_DURATION,
+      useNativeDriver: true,
+      easing: Easing.bezier(0.3, 0, 0.1, 1),
+    }).start(() => {
+      setWinner(selectedWinner);
+      confettiRef.current?.start();
+    });
+  };
+
+  const handleReset = () => {
+    setIsSelecting(false);
+    setWinner(null);
+    scrollY.setValue(0);
+    confettiRef.current?.stop();
+  };
+
+  const renderListItem = ({ item, index }: { item: Participant, index: number }) => (
+    <View style={styles.itemContainer} key={`${item.id}-${index}`}>
+      <Text style={styles.itemName}>{item.name}</Text>
+    </View>
+  );
+
+  return (
+  <AppView>
+      <Confetti ref={confettiRef} />
+      
+      <Text style={styles.title}>Select a Winner</Text>
+      
+      <View style={styles.selectionMachine}>
+        <View style={styles.winnerPointer} />
+        {isSelecting || winner ? (
+          <Animated.View style={{ transform: [{ translateY: scrollY }] }}>
+            {animationList.map((item, index) => renderListItem({ item, index }))}
+          </Animated.View>
+        ) : (
+          <View style={styles.placeholderContainer}>
+             <Text style={styles.placeholderText}>Press Start to Select</Text>
+          </View>
+        )}
+      </View>
+
+      {winner && (
+        <View style={styles.winnerBanner}>
+            <Text style={styles.winnerText}>Winner is</Text>
+            <Text style={styles.winnerName}>{winner.name}!</Text>
+        </View>
+      )}
+
+      {!isSelecting && !winner && (
+        <TouchableOpacity style={styles.startButton} onPress={handleStartSelection}>
+            <Text style={styles.startButtonText}>Start Selection</Text>
+        </TouchableOpacity>
+      )}
+
+      {winner && (
+         <TouchableOpacity style={styles.resetButton} onPress={handleReset}>
+            <Text style={styles.resetButtonText}>Select Again</Text>
+        </TouchableOpacity>
+      )}
+
+   </AppView>
+  );
+};
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#1C1C1E',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+    paddingVertical: 40,
+  },
+  title: {
+    fontSize: 32,
+    fontWeight: 'bold',
+    color: '#FFFFFF',
+    textAlign: 'center',
+    marginBottom: 30,
+  },
+  selectionMachine: {
+    height: ITEM_HEIGHT,
+    width: '90%',
+    backgroundColor: '#2C2C2E',
+    borderRadius: 20,
+    overflow: 'hidden',
+    justifyContent: 'center',
+  },
+  winnerPointer: {
+    position: 'absolute',
+    width: '105%',
+    height: ITEM_HEIGHT,
+    borderRadius: 20,
+    borderWidth: 3,
+    borderColor: '#FBC02D',
+    alignSelf: 'center',
+    zIndex: 1,
+  },
+  itemContainer: {
+    height: ITEM_HEIGHT,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  itemName: {
+    fontSize: 36,
+    fontWeight: 'bold',
+    color: '#FFF',
+  },
+   placeholderContainer: {
+    height: ITEM_HEIGHT,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  placeholderText: {
+    fontSize: 24,
+    color: '#666',
+    fontStyle: 'italic',
+  },
+  winnerBanner: {
+    marginTop: 30,
+    padding: 20,
+    backgroundColor: '#FBC02D',
+    borderRadius: 15,
+    alignItems: 'center',
+  },
+  winnerText: {
+    fontSize: 20,
+    color: '#000',
+  },
+  winnerName: {
+    fontSize: 40,
+    fontWeight: 'bold',
+    color: '#000',
+  },
+  startButton: {
+    backgroundColor: '#007AFF',
+    paddingVertical: 18,
+    paddingHorizontal: 40,
+    borderRadius: 30,
+    marginTop: 40,
+  },
+  startButtonText: {
+    color: '#FFFFFF',
+    fontSize: 20,
+    fontWeight: 'bold',
+  },
+  resetButton: {
+    backgroundColor: '#333',
+    paddingVertical: 18,
+    paddingHorizontal: 40,
+    borderRadius: 30,
+    marginTop: 40,
+  },
+  resetButtonText: {
+     color: '#FFFFFF',
+    fontSize: 20,
+    fontWeight: 'bold',
+  },
+});
+
+export default RandomSelectUserScreen;
+