import { useState } from "react";
import { useLocation } from "wouter";
import { useAuth } from "@/hooks/use-auth";
import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
import { userApi, ordersApi } from "@/lib/api";
import Header from "@/components/layout/header";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Button } from "@/components/ui/button";
import { Badge } from "@/components/ui/badge";
import { Separator } from "@/components/ui/separator";
import { Skeleton } from "@/components/ui/skeleton";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger } from "@/components/ui/dialog";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { Switch } from "@/components/ui/switch";
import { useToast } from "@/hooks/use-toast";
import { User, Package, MapPin, CreditCard, Settings, LogOut, Edit, Save, X, Plus, Trash2, Mail, Bell, Shield, Download, Eye, EyeOff } from "lucide-react";

export default function Profile() {
  const [, setLocation] = useLocation();
  const { user, logout } = useAuth();
  const [searchQuery, setSearchQuery] = useState("");
  const [isEditing, setIsEditing] = useState(false);
  const [editForm, setEditForm] = useState<any>({});
  const [activeTab, setActiveTab] = useState("profile");
  const [addresses, setAddresses] = useState<any[]>([]);
  const [paymentMethods, setPaymentMethods] = useState<any[]>([]);
  const [addressForm, setAddressForm] = useState<any>({});
  const [paymentForm, setPaymentForm] = useState<any>({});
  const [isAddingAddress, setIsAddingAddress] = useState(false);
  const [isAddingPayment, setIsAddingPayment] = useState(false);
  const [settings, setSettings] = useState({
    emailNotifications: true,
    orderNotifications: true,
    promotionalEmails: false,
    twoFactorAuth: false,
    showProfile: true
  });
  const [showPassword, setShowPassword] = useState(false);
  const [passwordForm, setPasswordForm] = useState({ current: '', new: '', confirm: '' });
  const { toast } = useToast();
  const queryClient = useQueryClient();

  // Redirect if not authenticated
  if (!user) {
    setLocation('/auth');
    return null;
  }

  const { data: profile, isLoading: profileLoading } = useQuery({
    queryKey: ['/api/user/profile'],
    queryFn: async () => {
      const response = await userApi.getProfile();
      return response.json();
    },
  });

  const { data: orders = [], isLoading: ordersLoading } = useQuery({
    queryKey: ['/api/orders'],
    queryFn: async () => {
      const response = await ordersApi.get();
      return response.json();
    },
  });

  const updateProfileMutation = useMutation({
    mutationFn: (data: any) => userApi.updateProfile(data),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['/api/user/profile'] });
      setIsEditing(false);
      toast({
        title: "Profile updated",
        description: "Your profile has been successfully updated.",
      });
    },
    onError: () => {
      toast({
        title: "Error",
        description: "Failed to update profile. Please try again.",
        variant: "destructive",
      });
    },
  });

  const handleEditProfile = () => {
    setEditForm({
      firstName: profile?.firstName || user.firstName || '',
      lastName: profile?.lastName || user.lastName || '',
      email: profile?.email || user.email || '',
      phone: profile?.phone || '',
      street: profile?.street || '',
      city: profile?.city || '',
      state: profile?.state || '',
      pinCode: profile?.pinCode || '',
      country: profile?.country || '',
    });
    setIsEditing(true);
  };

  const handleSaveProfile = () => {
    updateProfileMutation.mutate(editForm);
  };

  const handleCancelEdit = () => {
    setIsEditing(false);
    setEditForm({});
  };

  const handleInputChange = (field: string, value: string) => {
    setEditForm(prev => ({ ...prev, [field]: value }));
  };

  const handleTabNavigation = (section: string) => {
    setActiveTab(section);
    if (section === 'orders') {
      setLocation('/orders');
    }
  };

  const handleLogout = () => {
    logout();
    setLocation('/');
  };

  // Address functions
  const handleAddAddress = () => {
    setAddressForm({ type: 'home', street: '', city: '', state: '', pinCode: '', country: '', isDefault: false });
    setIsAddingAddress(true);
  };

  const handleSaveAddress = () => {
    if (!addressForm.street || !addressForm.city || !addressForm.state || !addressForm.pinCode) {
      toast({ title: "Error", description: "Please fill in all required fields.", variant: "destructive" });
      return;
    }
    const newAddress = { ...addressForm, id: Date.now().toString() };
    setAddresses(prev => [...prev, newAddress]);
    setIsAddingAddress(false);
    setAddressForm({});
    toast({ title: "Success", description: "Address added successfully." });
  };

  const handleDeleteAddress = (addressId: string) => {
    setAddresses(prev => prev.filter(addr => addr.id !== addressId));
    toast({ title: "Success", description: "Address deleted successfully." });
  };

  // Payment functions
  const handleAddPayment = () => {
    setPaymentForm({ type: 'card', cardNumber: '', expiryDate: '', cvv: '', nameOnCard: '', isDefault: false });
    setIsAddingPayment(true);
  };

  const handleSavePayment = () => {
    if (!paymentForm.cardNumber || !paymentForm.expiryDate || !paymentForm.cvv || !paymentForm.nameOnCard) {
      toast({ title: "Error", description: "Please fill in all required fields.", variant: "destructive" });
      return;
    }
    const newPayment = { 
      ...paymentForm, 
      id: Date.now().toString(),
      cardNumber: `****-****-****-${paymentForm.cardNumber.slice(-4)}`
    };
    setPaymentMethods(prev => [...prev, newPayment]);
    setIsAddingPayment(false);
    setPaymentForm({});
    toast({ title: "Success", description: "Payment method added successfully." });
  };

  const handleDeletePayment = (paymentId: string) => {
    setPaymentMethods(prev => prev.filter(payment => payment.id !== paymentId));
    toast({ title: "Success", description: "Payment method deleted successfully." });
  };

  // Settings functions
  const handleSettingsChange = (key: string, value: boolean) => {
    setSettings(prev => ({ ...prev, [key]: value }));
    toast({ title: "Settings updated", description: "Your preferences have been saved." });
  };

  const handlePasswordChange = () => {
    if (!passwordForm.current || !passwordForm.new || !passwordForm.confirm) {
      toast({ title: "Error", description: "Please fill in all password fields.", variant: "destructive" });
      return;
    }
    if (passwordForm.new !== passwordForm.confirm) {
      toast({ title: "Error", description: "New passwords do not match.", variant: "destructive" });
      return;
    }
    if (passwordForm.new.length < 6) {
      toast({ title: "Error", description: "Password must be at least 6 characters long.", variant: "destructive" });
      return;
    }
    setPasswordForm({ current: '', new: '', confirm: '' });
    toast({ title: "Success", description: "Password changed successfully." });
  };

  const handleDataExport = () => {
    toast({ title: "Data Export", description: "Your data export will be emailed to you within 24 hours." });
  };

  const handleAccountDelete = () => {
    toast({ title: "Account Deletion", description: "Please contact support to delete your account.", variant: "destructive" });
  };

  const getStatusColor = (status: string) => {
    switch (status.toLowerCase()) {
      case 'delivered':
        return 'default';
      case 'shipped':
        return 'secondary';
      case 'pending':
        return 'outline';
      case 'cancelled':
        return 'destructive';
      default:
        return 'outline';
    }
  };

  return (
    <div className="min-h-screen bg-gray-50">
      <Header searchQuery={searchQuery} setSearchQuery={setSearchQuery} />

      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-8" data-testid="profile-page">
        <div className="mb-8">
          <h1 className="text-3xl font-bold text-gray-900" data-testid="profile-title">
            My Account
          </h1>
          <p className="text-gray-600 mt-2">Manage your account and view your order history</p>
        </div>

        <div className="grid grid-cols-1 lg:grid-cols-4 gap-8">
          {/* Account Navigation */}
          <div className="lg:col-span-1">
            <Card>
              <CardContent className="p-4">
                <nav className="space-y-2" data-testid="profile-nav">
                  <Button 
                    variant="ghost" 
                    className={`w-full justify-start ${
                      activeTab === 'profile' ? 'bg-blue-50 text-blue-600' : ''
                    }`}
                    onClick={() => handleTabNavigation('profile')}
                  >
                    <User className="mr-2 h-4 w-4" />
                    Profile
                  </Button>
                  <Button 
                    variant="ghost" 
                    className={`w-full justify-start ${
                      activeTab === 'orders' ? 'bg-blue-50 text-blue-600' : ''
                    }`}
                    onClick={() => handleTabNavigation('orders')}
                  >
                    <Package className="mr-2 h-4 w-4" />
                    Order History
                  </Button>
                  <Button 
                    variant="ghost" 
                    className={`w-full justify-start ${
                      activeTab === 'addresses' ? 'bg-blue-50 text-blue-600' : ''
                    }`}
                    onClick={() => handleTabNavigation('addresses')}
                  >
                    <MapPin className="mr-2 h-4 w-4" />
                    Addresses
                  </Button>
                  <Button 
                    variant="ghost" 
                    className={`w-full justify-start ${
                      activeTab === 'payment' ? 'bg-blue-50 text-blue-600' : ''
                    }`}
                    onClick={() => handleTabNavigation('payment')}
                  >
                    <CreditCard className="mr-2 h-4 w-4" />
                    Payment Methods
                  </Button>
                  <Button 
                    variant="ghost" 
                    className={`w-full justify-start ${
                      activeTab === 'settings' ? 'bg-blue-50 text-blue-600' : ''
                    }`}
                    onClick={() => handleTabNavigation('settings')}
                  >
                    <Settings className="mr-2 h-4 w-4" />
                    Settings
                  </Button>
                  <Separator />
                  <Button
                    variant="ghost"
                    className="w-full justify-start text-red-600 hover:text-red-700 hover:bg-red-50"
                    onClick={handleLogout}
                    data-testid="logout-button"
                  >
                    <LogOut className="mr-2 h-4 w-4" />
                    Sign Out
                  </Button>
                </nav>
              </CardContent>
            </Card>
          </div>

          {/* Account Content */}
          <div className="lg:col-span-3">
            <Tabs value={activeTab} onValueChange={setActiveTab} className="space-y-6">
              <TabsList className="hidden">
                <TabsTrigger value="profile" data-testid="profile-tab">Profile Information</TabsTrigger>
                <TabsTrigger value="orders" data-testid="orders-tab">Order History</TabsTrigger>
                <TabsTrigger value="addresses" data-testid="addresses-tab">Addresses</TabsTrigger>
                <TabsTrigger value="payment" data-testid="payment-tab">Payment Methods</TabsTrigger>
                <TabsTrigger value="settings" data-testid="settings-tab">Settings</TabsTrigger>
              </TabsList>

              <TabsContent value="profile">
                <Card>
                  <CardHeader>
                    <CardTitle>Profile Information</CardTitle>
                  </CardHeader>
                  <CardContent>
                    {profileLoading ? (
                      <div className="space-y-4">
                        <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                          <Skeleton className="h-10 w-full" />
                          <Skeleton className="h-10 w-full" />
                        </div>
                        <Skeleton className="h-10 w-full" />
                        <Skeleton className="h-10 w-full" />
                      </div>
                    ) : (
                      <div className="space-y-6" data-testid="profile-info">
                        {!isEditing ? (
                          <>
                            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                              <div>
                                <Label>First Name</Label>
                                <div className="p-3 bg-gray-50 rounded-lg" data-testid="first-name">
                                  {profile?.firstName || user.firstName || 'Not provided'}
                                </div>
                              </div>
                              <div>
                                <Label>Last Name</Label>
                                <div className="p-3 bg-gray-50 rounded-lg" data-testid="last-name">
                                  {profile?.lastName || user.lastName || 'Not provided'}
                                </div>
                              </div>
                            </div>

                            <div>
                              <Label>Email</Label>
                              <div className="p-3 bg-gray-50 rounded-lg" data-testid="email">
                                {profile?.email || user.email}
                              </div>
                            </div>

                            <div>
                              <Label>Username</Label>
                              <div className="p-3 bg-gray-50 rounded-lg" data-testid="username">
                                {profile?.username || user.username}
                              </div>
                            </div>

                            <div>
                              <Label>Phone</Label>
                              <div className="p-3 bg-gray-50 rounded-lg" data-testid="phone">
                                {profile?.phone || 'Not provided'}
                              </div>
                            </div>

                            <div>
                              <Label>Address</Label>
                              <div className="p-3 bg-gray-50 rounded-lg" data-testid="address">
                                {(profile?.street || profile?.city) ? 
                                  `${profile.street || ''}, ${profile.city || ''}, ${profile.state || ''} ${profile.pinCode || ''}, ${profile.country || ''}`.replace(/^,\s*|,\s*$|,\s*,/g, '') :
                                  'Not provided'
                                }
                              </div>
                            </div>

                            <Button 
                              onClick={handleEditProfile}
                              className="bg-gradient-to-r from-blue-500 to-purple-500 hover:from-blue-600 hover:to-purple-600" 
                              data-testid="edit-profile"
                            >
                              <Edit className="h-4 w-4 mr-2" />
                              Edit Profile
                            </Button>
                          </>
                        ) : (
                          <>
                            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                              <div>
                                <Label htmlFor="firstName">First Name</Label>
                                <Input
                                  id="firstName"
                                  value={editForm.firstName || ''}
                                  onChange={(e) => handleInputChange('firstName', e.target.value)}
                                  data-testid="edit-first-name"
                                />
                              </div>
                              <div>
                                <Label htmlFor="lastName">Last Name</Label>
                                <Input
                                  id="lastName"
                                  value={editForm.lastName || ''}
                                  onChange={(e) => handleInputChange('lastName', e.target.value)}
                                  data-testid="edit-last-name"
                                />
                              </div>
                            </div>

                            <div>
                              <Label htmlFor="email">Email</Label>
                              <Input
                                id="email"
                                type="email"
                                value={editForm.email || ''}
                                onChange={(e) => handleInputChange('email', e.target.value)}
                                data-testid="edit-email"
                              />
                            </div>

                            <div>
                              <Label htmlFor="phone">Phone</Label>
                              <Input
                                id="phone"
                                value={editForm.phone || ''}
                                onChange={(e) => handleInputChange('phone', e.target.value)}
                                data-testid="edit-phone"
                              />
                            </div>

                            <div className="space-y-4">
                              <h4 className="font-medium text-gray-900">Address Information</h4>
                              <div>
                                <Label htmlFor="street">Street Address</Label>
                                <Input
                                  id="street"
                                  value={editForm.street || ''}
                                  onChange={(e) => handleInputChange('street', e.target.value)}
                                  data-testid="edit-street"
                                />
                              </div>
                              <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
                                <div>
                                  <Label htmlFor="city">City</Label>
                                  <Input
                                    id="city"
                                    value={editForm.city || ''}
                                    onChange={(e) => handleInputChange('city', e.target.value)}
                                    data-testid="edit-city"
                                  />
                                </div>
                                <div>
                                  <Label htmlFor="state">State</Label>
                                  <Input
                                    id="state"
                                    value={editForm.state || ''}
                                    onChange={(e) => handleInputChange('state', e.target.value)}
                                    data-testid="edit-state"
                                  />
                                </div>
                                <div>
                                  <Label htmlFor="pinCode">PIN Code</Label>
                                  <Input
                                    id="pinCode"
                                    value={editForm.pinCode || ''}
                                    onChange={(e) => handleInputChange('pinCode', e.target.value)}
                                    data-testid="edit-pin-code"
                                  />
                                </div>
                              </div>
                              <div>
                                <Label htmlFor="country">Country</Label>
                                <Input
                                  id="country"
                                  value={editForm.country || ''}
                                  onChange={(e) => handleInputChange('country', e.target.value)}
                                  data-testid="edit-country"
                                />
                              </div>
                            </div>

                            <div className="flex space-x-3">
                              <Button 
                                onClick={handleSaveProfile}
                                disabled={updateProfileMutation.isPending}
                                className="bg-gradient-to-r from-green-500 to-emerald-500 hover:from-green-600 hover:to-emerald-600" 
                                data-testid="save-profile"
                              >
                                <Save className="h-4 w-4 mr-2" />
                                {updateProfileMutation.isPending ? 'Saving...' : 'Save Changes'}
                              </Button>
                              <Button 
                                variant="outline"
                                onClick={handleCancelEdit}
                                data-testid="cancel-edit"
                              >
                                <X className="h-4 w-4 mr-2" />
                                Cancel
                              </Button>
                            </div>
                          </>
                        )}
                      </div>
                    )}
                  </CardContent>
                </Card>
              </TabsContent>

              <TabsContent value="addresses">
                <Card>
                  <CardHeader>
                    <div className="flex items-center justify-between">
                      <CardTitle className="flex items-center">
                        <MapPin className="h-5 w-5 mr-2" />
                        Addresses
                      </CardTitle>
                      <Dialog open={isAddingAddress} onOpenChange={setIsAddingAddress}>
                        <DialogTrigger asChild>
                          <Button onClick={handleAddAddress} data-testid="add-address">
                            <Plus className="h-4 w-4 mr-2" />
                            Add Address
                          </Button>
                        </DialogTrigger>
                        <DialogContent>
                          <DialogHeader>
                            <DialogTitle>Add New Address</DialogTitle>
                          </DialogHeader>
                          <div className="space-y-4">
                            <div>
                              <Label htmlFor="addressType">Address Type</Label>
                              <Select value={addressForm.type || ''} onValueChange={(value) => setAddressForm(prev => ({ ...prev, type: value }))}>
                                <SelectTrigger>
                                  <SelectValue placeholder="Select address type" />
                                </SelectTrigger>
                                <SelectContent>
                                  <SelectItem value="home">Home</SelectItem>
                                  <SelectItem value="work">Work</SelectItem>
                                  <SelectItem value="other">Other</SelectItem>
                                </SelectContent>
                              </Select>
                            </div>
                            <div>
                              <Label htmlFor="street">Street Address</Label>
                              <Input
                                id="street"
                                value={addressForm.street || ''}
                                onChange={(e) => setAddressForm(prev => ({ ...prev, street: e.target.value }))}
                                placeholder="Enter street address"
                              />
                            </div>
                            <div className="grid grid-cols-2 gap-4">
                              <div>
                                <Label htmlFor="city">City</Label>
                                <Input
                                  id="city"
                                  value={addressForm.city || ''}
                                  onChange={(e) => setAddressForm(prev => ({ ...prev, city: e.target.value }))}
                                  placeholder="Enter city"
                                />
                              </div>
                              <div>
                                <Label htmlFor="state">State</Label>
                                <Input
                                  id="state"
                                  value={addressForm.state || ''}
                                  onChange={(e) => setAddressForm(prev => ({ ...prev, state: e.target.value }))}
                                  placeholder="Enter state"
                                />
                              </div>
                            </div>
                            <div className="grid grid-cols-2 gap-4">
                              <div>
                                <Label htmlFor="pinCode">PIN Code</Label>
                                <Input
                                  id="pinCode"
                                  value={addressForm.pinCode || ''}
                                  onChange={(e) => setAddressForm(prev => ({ ...prev, pinCode: e.target.value }))}
                                  placeholder="Enter PIN code"
                                />
                              </div>
                              <div>
                                <Label htmlFor="country">Country</Label>
                                <Input
                                  id="country"
                                  value={addressForm.country || ''}
                                  onChange={(e) => setAddressForm(prev => ({ ...prev, country: e.target.value }))}
                                  placeholder="Enter country"
                                />
                              </div>
                            </div>
                            <div className="flex items-center space-x-2">
                              <Switch
                                id="defaultAddress"
                                checked={addressForm.isDefault || false}
                                onCheckedChange={(checked) => setAddressForm(prev => ({ ...prev, isDefault: checked }))}
                              />
                              <Label htmlFor="defaultAddress">Set as default address</Label>
                            </div>
                            <div className="flex space-x-2">
                              <Button onClick={handleSaveAddress} className="flex-1">Save Address</Button>
                              <Button variant="outline" onClick={() => setIsAddingAddress(false)} className="flex-1">Cancel</Button>
                            </div>
                          </div>
                        </DialogContent>
                      </Dialog>
                    </div>
                  </CardHeader>
                  <CardContent>
                    {addresses.length === 0 ? (
                      <div className="text-center py-12">
                        <MapPin className="h-16 w-16 text-gray-400 mx-auto mb-4" />
                        <h3 className="text-lg font-medium text-gray-900 mb-2">No saved addresses</h3>
                        <p className="text-gray-500 mb-6">Add addresses for faster checkout</p>
                      </div>
                    ) : (
                      <div className="space-y-4" data-testid="addresses-list">
                        {addresses.map((address: any) => (
                          <div key={address.id} className="border rounded-lg p-4" data-testid={`address-${address.id}`}>
                            <div className="flex justify-between items-start">
                              <div className="flex-1">
                                <div className="flex items-center space-x-2 mb-2">
                                  <Badge variant={address.isDefault ? 'default' : 'secondary'}>
                                    {address.type.charAt(0).toUpperCase() + address.type.slice(1)}
                                  </Badge>
                                  {address.isDefault && <Badge>Default</Badge>}
                                </div>
                                <p className="text-gray-900">{address.street}</p>
                                <p className="text-gray-600">{address.city}, {address.state} {address.pinCode}</p>
                                <p className="text-gray-600">{address.country}</p>
                              </div>
                              <Button
                                variant="outline"
                                size="sm"
                                onClick={() => handleDeleteAddress(address.id)}
                                className="text-red-600 hover:text-red-700"
                                data-testid={`delete-address-${address.id}`}
                              >
                                <Trash2 className="h-4 w-4" />
                              </Button>
                            </div>
                          </div>
                        ))}
                      </div>
                    )}
                  </CardContent>
                </Card>
              </TabsContent>

              <TabsContent value="payment">
                <Card>
                  <CardHeader>
                    <div className="flex items-center justify-between">
                      <CardTitle className="flex items-center">
                        <CreditCard className="h-5 w-5 mr-2" />
                        Payment Methods
                      </CardTitle>
                      <Dialog open={isAddingPayment} onOpenChange={setIsAddingPayment}>
                        <DialogTrigger asChild>
                          <Button onClick={handleAddPayment} data-testid="add-payment">
                            <Plus className="h-4 w-4 mr-2" />
                            Add Payment Method
                          </Button>
                        </DialogTrigger>
                        <DialogContent>
                          <DialogHeader>
                            <DialogTitle>Add Payment Method</DialogTitle>
                          </DialogHeader>
                          <div className="space-y-4">
                            <div>
                              <Label htmlFor="nameOnCard">Name on Card</Label>
                              <Input
                                id="nameOnCard"
                                value={paymentForm.nameOnCard || ''}
                                onChange={(e) => setPaymentForm(prev => ({ ...prev, nameOnCard: e.target.value }))}
                                placeholder="Enter name on card"
                              />
                            </div>
                            <div>
                              <Label htmlFor="cardNumber">Card Number</Label>
                              <Input
                                id="cardNumber"
                                value={paymentForm.cardNumber || ''}
                                onChange={(e) => setPaymentForm(prev => ({ ...prev, cardNumber: e.target.value }))}
                                placeholder="1234 5678 9012 3456"
                                maxLength={19}
                              />
                            </div>
                            <div className="grid grid-cols-2 gap-4">
                              <div>
                                <Label htmlFor="expiryDate">Expiry Date</Label>
                                <Input
                                  id="expiryDate"
                                  value={paymentForm.expiryDate || ''}
                                  onChange={(e) => setPaymentForm(prev => ({ ...prev, expiryDate: e.target.value }))}
                                  placeholder="MM/YY"
                                  maxLength={5}
                                />
                              </div>
                              <div>
                                <Label htmlFor="cvv">CVV</Label>
                                <Input
                                  id="cvv"
                                  value={paymentForm.cvv || ''}
                                  onChange={(e) => setPaymentForm(prev => ({ ...prev, cvv: e.target.value }))}
                                  placeholder="123"
                                  maxLength={4}
                                />
                              </div>
                            </div>
                            <div className="flex items-center space-x-2">
                              <Switch
                                id="defaultPayment"
                                checked={paymentForm.isDefault || false}
                                onCheckedChange={(checked) => setPaymentForm(prev => ({ ...prev, isDefault: checked }))}
                              />
                              <Label htmlFor="defaultPayment">Set as default payment method</Label>
                            </div>
                            <div className="flex space-x-2">
                              <Button onClick={handleSavePayment} className="flex-1">Save Payment Method</Button>
                              <Button variant="outline" onClick={() => setIsAddingPayment(false)} className="flex-1">Cancel</Button>
                            </div>
                          </div>
                        </DialogContent>
                      </Dialog>
                    </div>
                  </CardHeader>
                  <CardContent>
                    {paymentMethods.length === 0 ? (
                      <div className="text-center py-12">
                        <CreditCard className="h-16 w-16 text-gray-400 mx-auto mb-4" />
                        <h3 className="text-lg font-medium text-gray-900 mb-2">No saved payment methods</h3>
                        <p className="text-gray-500 mb-6">Add payment methods for faster checkout</p>
                      </div>
                    ) : (
                      <div className="space-y-4" data-testid="payment-methods-list">
                        {paymentMethods.map((payment: any) => (
                          <div key={payment.id} className="border rounded-lg p-4" data-testid={`payment-${payment.id}`}>
                            <div className="flex justify-between items-start">
                              <div className="flex-1">
                                <div className="flex items-center space-x-2 mb-2">
                                  <Badge variant={payment.isDefault ? 'default' : 'secondary'}>
                                    Credit Card
                                  </Badge>
                                  {payment.isDefault && <Badge>Default</Badge>}
                                </div>
                                <p className="text-gray-900 font-medium">{payment.nameOnCard}</p>
                                <p className="text-gray-600">{payment.cardNumber}</p>
                                <p className="text-gray-600">Expires: {payment.expiryDate}</p>
                              </div>
                              <Button
                                variant="outline"
                                size="sm"
                                onClick={() => handleDeletePayment(payment.id)}
                                className="text-red-600 hover:text-red-700"
                                data-testid={`delete-payment-${payment.id}`}
                              >
                                <Trash2 className="h-4 w-4" />
                              </Button>
                            </div>
                          </div>
                        ))}
                      </div>
                    )}
                  </CardContent>
                </Card>
              </TabsContent>

              <TabsContent value="settings">
                <div className="space-y-6">
                  {/* Notifications */}
                  <Card>
                    <CardHeader>
                      <CardTitle className="flex items-center">
                        <Bell className="h-5 w-5 mr-2" />
                        Notifications
                      </CardTitle>
                    </CardHeader>
                    <CardContent className="space-y-4">
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Email Notifications</Label>
                          <p className="text-sm text-gray-500">Receive order updates and promotions via email</p>
                        </div>
                        <Switch
                          checked={settings.emailNotifications}
                          onCheckedChange={(checked) => handleSettingsChange('emailNotifications', checked)}
                          data-testid="email-notifications"
                        />
                      </div>
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Order Notifications</Label>
                          <p className="text-sm text-gray-500">Get notified about order status changes</p>
                        </div>
                        <Switch
                          checked={settings.orderNotifications}
                          onCheckedChange={(checked) => handleSettingsChange('orderNotifications', checked)}
                          data-testid="order-notifications"
                        />
                      </div>
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Promotional Emails</Label>
                          <p className="text-sm text-gray-500">Receive offers and deals via email</p>
                        </div>
                        <Switch
                          checked={settings.promotionalEmails}
                          onCheckedChange={(checked) => handleSettingsChange('promotionalEmails', checked)}
                          data-testid="promotional-emails"
                        />
                      </div>
                    </CardContent>
                  </Card>

                  {/* Security */}
                  <Card>
                    <CardHeader>
                      <CardTitle className="flex items-center">
                        <Shield className="h-5 w-5 mr-2" />
                        Security
                      </CardTitle>
                    </CardHeader>
                    <CardContent className="space-y-6">
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Two-Factor Authentication</Label>
                          <p className="text-sm text-gray-500">Add an extra layer of security to your account</p>
                        </div>
                        <Switch
                          checked={settings.twoFactorAuth}
                          onCheckedChange={(checked) => handleSettingsChange('twoFactorAuth', checked)}
                          data-testid="two-factor-auth"
                        />
                      </div>
                      
                      <div className="border-t pt-4">
                        <h4 className="font-medium text-gray-900 mb-3">Change Password</h4>
                        <div className="space-y-3">
                          <div>
                            <Label>Current Password</Label>
                            <div className="relative">
                              <Input
                                type={showPassword ? 'text' : 'password'}
                                value={passwordForm.current}
                                onChange={(e) => setPasswordForm(prev => ({ ...prev, current: e.target.value }))}
                                placeholder="Enter current password"
                                data-testid="current-password"
                              />
                              <Button
                                type="button"
                                variant="ghost"
                                size="sm"
                                className="absolute right-0 top-0 h-full px-3"
                                onClick={() => setShowPassword(!showPassword)}
                              >
                                {showPassword ? <EyeOff className="h-4 w-4" /> : <Eye className="h-4 w-4" />}
                              </Button>
                            </div>
                          </div>
                          <div>
                            <Label>New Password</Label>
                            <Input
                              type="password"
                              value={passwordForm.new}
                              onChange={(e) => setPasswordForm(prev => ({ ...prev, new: e.target.value }))}
                              placeholder="Enter new password"
                              data-testid="new-password"
                            />
                          </div>
                          <div>
                            <Label>Confirm New Password</Label>
                            <Input
                              type="password"
                              value={passwordForm.confirm}
                              onChange={(e) => setPasswordForm(prev => ({ ...prev, confirm: e.target.value }))}
                              placeholder="Confirm new password"
                              data-testid="confirm-password"
                            />
                          </div>
                          <Button onClick={handlePasswordChange} data-testid="change-password">Change Password</Button>
                        </div>
                      </div>
                    </CardContent>
                  </Card>

                  {/* Privacy */}
                  <Card>
                    <CardHeader>
                      <CardTitle className="flex items-center">
                        <Eye className="h-5 w-5 mr-2" />
                        Privacy
                      </CardTitle>
                    </CardHeader>
                    <CardContent className="space-y-4">
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Show Profile Publicly</Label>
                          <p className="text-sm text-gray-500">Make your profile visible to other users</p>
                        </div>
                        <Switch
                          checked={settings.showProfile}
                          onCheckedChange={(checked) => handleSettingsChange('showProfile', checked)}
                          data-testid="show-profile"
                        />
                      </div>
                    </CardContent>
                  </Card>

                  {/* Data & Account */}
                  <Card>
                    <CardHeader>
                      <CardTitle className="flex items-center">
                        <Download className="h-5 w-5 mr-2" />
                        Data & Account
                      </CardTitle>
                    </CardHeader>
                    <CardContent className="space-y-4">
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Export Data</Label>
                          <p className="text-sm text-gray-500">Download all your account data</p>
                        </div>
                        <Button variant="outline" onClick={handleDataExport} data-testid="export-data">
                          <Download className="h-4 w-4 mr-2" />
                          Export
                        </Button>
                      </div>
                      <div className="flex items-center justify-between">
                        <div>
                          <Label>Delete Account</Label>
                          <p className="text-sm text-gray-500">Permanently delete your account and all data</p>
                        </div>
                        <Button 
                          variant="outline" 
                          onClick={handleAccountDelete}
                          className="text-red-600 hover:text-red-700 border-red-200 hover:border-red-300"
                          data-testid="delete-account"
                        >
                          <Trash2 className="h-4 w-4 mr-2" />
                          Delete
                        </Button>
                      </div>
                    </CardContent>
                  </Card>
                </div>
              </TabsContent>

              <TabsContent value="orders">
                <Card>
                  <CardHeader>
                    <CardTitle>Order History</CardTitle>
                  </CardHeader>
                  <CardContent>
                    {ordersLoading ? (
                      <div className="space-y-4">
                        {[...Array(3)].map((_, i) => (
                          <div key={i} className="border rounded-lg p-4">
                            <Skeleton className="h-6 w-48 mb-2" />
                            <Skeleton className="h-4 w-32 mb-4" />
                            <div className="space-y-2">
                              <Skeleton className="h-12 w-full" />
                              <Skeleton className="h-12 w-full" />
                            </div>
                          </div>
                        ))}
                      </div>
                    ) : orders.length > 0 ? (
                      <div className="space-y-4" data-testid="orders-list">
                        {orders.map((order: any) => (
                          <div key={order.id} className="border border-gray-200 rounded-lg p-4" data-testid={`order-${order.id}`}>
                            <div className="flex justify-between items-start mb-3">
                              <div>
                                <h4 className="font-medium text-gray-900" data-testid={`order-id-${order.id}`}>
                                  Order #{order.id.slice(0, 8)}
                                </h4>
                                <p className="text-sm text-gray-500" data-testid={`order-date-${order.id}`}>
                                  Placed on {new Date(order.createdAt).toLocaleDateString()}
                                </p>
                              </div>
                              <Badge variant={getStatusColor(order.status)} data-testid={`order-status-${order.id}`}>
                                {order.status}
                              </Badge>
                            </div>

                            {order.items && order.items.length > 0 && (
                              <div className="space-y-2 mb-4">
                                {order.items.map((item: any) => (
                                  <div key={item.id} className="flex items-center space-x-3" data-testid={`order-item-${item.id}`}>
                                    <div className="w-12 h-12 bg-gray-100 rounded overflow-hidden">
                                      {item.product?.images && item.product.images.length > 0 ? (
                                        <img
                                          src={item.product.images[0]}
                                          alt={item.product.title}
                                          className="w-full h-full object-cover"
                                        />
                                      ) : (
                                        <div className="w-full h-full bg-gray-200 flex items-center justify-center">
                                          <span className="text-xs text-gray-400">No Image</span>
                                        </div>
                                      )}
                                    </div>
                                    <div className="flex-1">
                                      <p className="text-sm font-medium text-gray-900" data-testid={`order-item-title-${item.id}`}>
                                        {item.product?.title || 'Unknown Product'}
                                      </p>
                                      <p className="text-xs text-gray-500" data-testid={`order-item-seller-${item.id}`}>
                                        {item.product?.store?.name || 'Unknown Seller'}
                                      </p>
                                    </div>
                                    <div className="text-right">
                                      <p className="text-sm font-semibold text-gray-900" data-testid={`order-item-price-${item.id}`}>
                                        ₹{parseFloat(item.price).toFixed(2)}
                                      </p>
                                      <p className="text-xs text-gray-500" data-testid={`order-item-quantity-${item.id}`}>
                                        Qty: {item.quantity}
                                      </p>
                                    </div>
                                  </div>
                                ))}
                              </div>
                            )}

                            <div className="flex justify-between items-center pt-3 border-t border-gray-200">
                              <span className="font-semibold text-gray-900" data-testid={`order-total-${order.id}`}>
                                Total: ₹{parseFloat(order.total).toFixed(2)}
                              </span>
                              <div className="space-x-2">
                                <Button variant="outline" size="sm" data-testid={`track-order-${order.id}`}>
                                  Track Order
                                </Button>
                                <Button variant="outline" size="sm" data-testid={`reorder-${order.id}`}>
                                  Reorder
                                </Button>
                              </div>
                            </div>
                          </div>
                        ))}
                      </div>
                    ) : (
                      <div className="text-center py-12" data-testid="no-orders">
                        <Package className="h-12 w-12 text-gray-400 mx-auto mb-4" />
                        <p className="text-gray-500">You haven't placed any orders yet.</p>
                        <Button
                          className="mt-4"
                          onClick={() => setLocation('/')}
                          data-testid="start-shopping"
                        >
                          Start Shopping
                        </Button>
                      </div>
                    )}
                  </CardContent>
                </Card>
              </TabsContent>
            </Tabs>
          </div>
        </div>
      </div>

    </div>
  );
}