Explore the FoodFinder iOS app at /Users/neog/Apps/iOS/FoodFinder-iOS to understand:

1. Current architecture and services structure
2. How RestaurantService works and what data is available about restaurants
3. The current UI flow and views
4. How to best integrate an AI service into the existing architecture

Focus on understanding how we could add a Claude AI agent that can:
- Answer questions about restaurants
- Give personalized recommendations
- Help users decide where to eat

Return a summary of the architecture and key integration points.


I'll explore the FoodFinder iOS app to understand its architecture and identify integration points for an AI service.


Bash

find /Users/neog/Apps/iOS/FoodFinder-iOS -type f -name "*.swift" | head -20

Find Swift files in FoodFinder project


List FoodFinder project root contents


total 16
drwxr-xr-x@  5 neog  staff   160 Dec 17 21:56 .
drwxr-xr-x@ 30 neog  staff   960 Dec 17 19:44 ..
-rw-------@  1 neog  staff  4910 Dec 17 21:56 CLAUDE.md
drwxr-xr-x@  9 neog  staff   288 Dec 17 19:47 FoodFinder-iOS
drwxr-xr-x@  5 neog  staff   160 Dec 17 21:58 FoodFinder-iOS.xcodeproj


Now let me read the key files to understand the architecture:


     1→# FoodFinder-iOS
     2→
     3→iOS app para encontrar restaurantes próximos usando GPS e Apple MapKit.
     4→
     5→## Overview
     6→
     7→FoodFinder permite que usuários encontrem restaurantes nas proximidades usando localização GPS. O app usa Apple Sign In para autenticação e MapKit para busca e visualização de restaurantes.
     8→
     9→## Features
    10→
    11→- **Apple Sign In** - Autenticação segura com credenciais armazenadas no Keychain
    12→- **GPS Location** - Localização atual via CoreLocation
    13→- **Restaurant Search** - Busca de restaurantes via MKLocalSearch (Apple MapKit)
    14→- **Map + List View** - Visualização dual com mapa e lista scrollável
    15→- **Restaurant Details** - Detalhes com opções para navegar, ligar e visitar website
    16→- **Open in Apple Maps** - Navegação direta para o restaurante
    17→
    18→## Architecture
    19→
    20→```
    21→FoodFinder-iOS/
    22→├── App/
    23→│   ├── FoodFinderApp.swift           # @main entry point
    24→│   └── ContentView.swift             # Router baseado em auth state
    25→├── Models/
    26→│   ├── User.swift                    # User model (Apple ID)
    27→│   └── Restaurant.swift              # Restaurant model (MKMapItem wrapper)
    28→├── Services/
    29→│   ├── KeychainService.swift         # Secure credential storage
    30→│   ├── AuthenticationService.swift   # Apple Sign In handling
    31→│   ├── LocationService.swift         # CLLocationManager wrapper
    32→│   └── RestaurantService.swift       # MKLocalSearch wrapper
    33→├── Views/
    34→│   ├── Auth/
    35→│   │   └── SignInView.swift          # Apple Sign In UI
    36→│   ├── Main/
    37→│   │   └── MainView.swift            # Map + List combined view
    38→│   └── Detail/
    39→│       └── RestaurantDetailView.swift # Restaurant details sheet
    40→├── Components/
    41→│   ├── RestaurantRow.swift           # List row component
    42→│   └── RestaurantAnnotationView.swift # Map pin component
    43→└── Assets.xcassets/
    44→    ├── AppIcon.appiconset/           # App icon (1024x1024)
    45→    └── AccentColor.colorset/         # Orange accent color
    46→```
    47→
    48→## Requirements
    49→
    50→- iOS 17.0+
    51→- Xcode 15.0+
    52→- Apple Developer Account (for Sign in with Apple capability)
    53→
    54→## Capabilities Required
    55→
    56→1. **Sign in with Apple** - Configured in Signing & Capabilities
    57→2. **Location When In Use** - NSLocationWhenInUseUsageDescription in Info.plist
    58→
    59→## Build & Run
    60→
    61→```bash
    62→# Open in Xcode
    63→open FoodFinder-iOS.xcodeproj
    64→
    65→# Build via command line
    66→xcodebuild -project FoodFinder-iOS.xcodeproj \
    67→  -scheme FoodFinder-iOS \
    68→  -destination 'platform=iOS Simulator,name=iPhone 17 Pro' \
    69→  build
    70→
    71→# Run on simulator
    72→xcrun simctl install booted /path/to/FoodFinder-iOS.app
    73→xcrun simctl launch booted com.neog.FoodFinder-iOS
    74→```
    75→
    76→## Configuration
    77→
    78→### Bundle ID
    79→`com.neog.FoodFinder-iOS`
    80→
    81→### Entitlements
    82→- `com.apple.developer.applesignin` - Default
    83→
    84→### Info.plist Keys
    85→- `NSLocationWhenInUseUsageDescription` - "FoodFinder needs your location to find restaurants nearby."
    86→
    87→## Services
    88→
    89→### AuthenticationService
    90→- Handles Apple Sign In flow
    91→- Verifies credential state with Apple servers
    92→- Stores credentials securely in Keychain
    93→- Publishes: `isSignedIn`, `currentUser`, `authError`
    94→
    95→### LocationService
    96→- Wraps CLLocationManager
    97→- Handles permission requests
    98→- Publishes: `currentLocation`, `authorizationStatus`, `locationError`
    99→
   100→### RestaurantService
   101→- Uses MKLocalSearch to find restaurants
   102→- Searches within 2km radius
   103→- Returns results sorted by distance
   104→- Publishes: `restaurants`, `isLoading`, `error`
   105→
   106→## Navigation Flow
   107→
   108→```
   109→App Launch
   110→    ↓
   111→ContentView (router)
   112→    ↓
   113→isSignedIn? ─── No ──→ SignInView
   114→    │                      ↓
   115→   Yes              Apple Sign In
   116→    ↓                      ↓
   117→MainView ←─────── Success ─┘
   118→    ↓
   119→Location Permission?
   120→    ↓
   121→Fetch restaurants → Map + List
   122→    ↓
   123→Tap restaurant → RestaurantDetailView (sheet)
   124→    ↓
   125→"Get Directions" → Apple Maps
   126→```
   127→
   128→## Tech Stack
   129→
   130→- **UI**: SwiftUI
   131→- **Maps**: MapKit (MKLocalSearch, Map view)
   132→- **Location**: CoreLocation
   133→- **Auth**: AuthenticationServices (Apple Sign In)
   134→- **Security**: Security framework (Keychain)
   135→- **Target**: iOS 17.0+
   136→
   137→## Dependencies
   138→
   139→Zero external dependencies - only native Apple frameworks.
   140→
   141→## Device Testing
   142→
   143→- **Test Simulator**: iPhone 17 Pro (ID: DA4D97BB-1FFE-45C0-85F9-0084CAB48178)
   144→- **Physical Device**: Gomes's iPhone (ID: 00008120-000949410222201E)
   145→
   146→## Troubleshooting
   147→
   148→### Location Not Working in Simulator
   149→Set a custom location: Simulator > Features > Location > Custom Location
   150→
   151→### Apple Sign In Not Working
   152→1. Ensure "Sign in with Apple" capability is enabled
   153→2. Verify Development Team is set in Signing & Capabilities
   154→3. Check that bundle ID matches your App ID configuration
   155→
   156→### No Restaurants Found
   157→- Check internet connection
   158→- Verify location is set (especially in simulator)
   159→- Try a location with known restaurants (e.g., city center)
   160→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

# FoodFinder-iOS

iOS app para encontrar restaurantes próximos usando GPS e Apple MapKit.

## Overview

FoodFinder permite que usuários encontrem restaurantes nas proximidades usando localização GPS. O app usa Apple Sign In para autenticação e MapKit para busca e visualização de restaurantes.

## Features

- **Apple Sign In** - Autenticação segura com credenciais armazenadas no Keychain
- **GPS Location** - Localização atual via CoreLocation
- **Restaurant Search** - Busca de restaurantes via MKLocalSearch (Apple MapKit)
- **Map + List View** - Visualização dual com mapa e lista scrollável
- **Restaurant Details** - Detalhes com opções para navegar, ligar e visitar website
- **Open in Apple Maps** - Navegação direta para o restaurante

## Architecture

```
FoodFinder-iOS/
├── App/
│   ├── FoodFinderApp.swift           # @main entry point
│   └── ContentView.swift             # Router baseado em auth state
├── Models/
│   ├── User.swift                    # User model (Apple ID)
│   └── Restaurant.swift              # Restaurant model (MKMapItem wrapper)
├── Services/
│   ├── KeychainService.swift         # Secure credential storage
│   ├── AuthenticationService.swift   # Apple Sign In handling
│   ├── LocationService.swift         # CLLocationManager wrapper
│   └── RestaurantService.swift       # MKLocalSearch wrapper
├── Views/
│   ├── Auth/
│   │   └── SignInView.swift          # Apple Sign In UI
│   ├── Main/
│   │   └── MainView.swift            # Map + List combined view
│   └── Detail/
│       └── RestaurantDetailView.swift # Restaurant details sheet
├── Components/
│   ├── RestaurantRow.swift           # List row component
│   └── RestaurantAnnotationView.swift # Map pin component
└── Assets.xcassets/
    ├── AppIcon.appiconset/           # App icon (1024x1024)
    └── AccentColor.colorset/         # Orange accent color
```

## Requirements

- iOS 17.0+
- Xcode 15.0+
- Apple Developer Account (for Sign in with Apple capability)

## Capabilities Required

1. **Sign in with Apple** - Configured in Signing & Capabilities
2. **Location When In Use** - NSLocationWhenInUseUsageDescription in Info.plist

## Build & Run

```bash
# Open in Xcode
open FoodFinder-iOS.xcodeproj

# Build via command line
xcodebuild -project FoodFinder-iOS.xcodeproj \
  -scheme FoodFinder-iOS \
  -destination 'platform=iOS Simulator,name=iPhone 17 Pro' \
  build

# Run on simulator
xcrun simctl install booted /path/to/FoodFinder-iOS.app
xcrun simctl launch booted com.neog.FoodFinder-iOS
```

## Configuration

### Bundle ID
`com.neog.FoodFinder-iOS`

### Entitlements
- `com.apple.developer.applesignin` - Default

### Info.plist Keys
- `NSLocationWhenInUseUsageDescription` - "FoodFinder needs your location to find restaurants nearby."

## Services

### AuthenticationService
- Handles Apple Sign In flow
- Verifies credential state with Apple servers
- Stores credentials securely in Keychain
- Publishes: `isSignedIn`, `currentUser`, `authError`

### LocationService
- Wraps CLLocationManager
- Handles permission requests
- Publishes: `currentLocation`, `authorizationStatus`, `locationError`

### RestaurantService
- Uses MKLocalSearch to find restaurants
- Searches within 2km radius
- Returns results sorted by distance
- Publishes: `restaurants`, `isLoading`, `error`

## Navigation Flow

```
App Launch
    ↓
ContentView (router)
    ↓
isSignedIn? ─── No ──→ SignInView
    │                      ↓
   Yes              Apple Sign In
    ↓                      ↓
MainView ←─────── Success ─┘
    ↓
Location Permission?
    ↓
Fetch restaurants → Map + List
    ↓
Tap restaurant → RestaurantDetailView (sheet)
    ↓
"Get Directions" → Apple Maps
```

## Tech Stack

- **UI**: SwiftUI
- **Maps**: MapKit (MKLocalSearch, Map view)
- **Location**: CoreLocation
- **Auth**: AuthenticationServices (Apple Sign In)
- **Security**: Security framework (Keychain)
- **Target**: iOS 17.0+

## Dependencies

Zero external dependencies - only native Apple frameworks.

## Device Testing

- **Test Simulator**: iPhone 17 Pro (ID: DA4D97BB-1FFE-45C0-85F9-0084CAB48178)
- **Physical Device**: Gomes's iPhone (ID: 00008120-000949410222201E)

## Troubleshooting

### Location Not Working in Simulator
Set a custom location: Simulator > Features > Location > Custom Location

### Apple Sign In Not Working
1. Ensure "Sign in with Apple" capability is enabled
2. Verify Development Team is set in Signing & Capabilities
3. Check that bundle ID matches your App ID configuration

### No Restaurants Found
- Check internet connection
- Verify location is set (especially in simulator)
- Try a location with known restaurants (e.g., city center)


     1→import Foundation
     2→import MapKit
     3→import CoreLocation
     4→
     5→/// Restaurant model representing a nearby restaurant from MapKit search
     6→struct Restaurant: Identifiable, Hashable {
     7→    let id: UUID
     8→    let name: String
     9→    let category: String?
    10→    let phoneNumber: String?
    11→    let url: URL?
    12→    let coordinate: CLLocationCoordinate2D
    13→    let address: String
    14→    let mapItem: MKMapItem
    15→
    16→    /// Distance from user's current location
    17→    var distanceFromUser: CLLocationDistance?
    18→
    19→    /// Formatted distance string (e.g., "500 m" or "1.2 km")
    20→    var formattedDistance: String {
    21→        guard let distance = distanceFromUser else { return "" }
    22→        if distance < 1000 {
    23→            return String(format: "%.0f m", distance)
    24→        } else {
    25→            return String(format: "%.1f km", distance / 1000)
    26→        }
    27→    }
    28→
    29→    /// Initialize from MKMapItem
    30→    init(from mapItem: MKMapItem, userLocation: CLLocation? = nil) {
    31→        self.id = UUID()
    32→        self.name = mapItem.name ?? "Unknown Restaurant"
    33→        self.category = mapItem.pointOfInterestCategory?.rawValue
    34→        self.phoneNumber = mapItem.phoneNumber
    35→        self.url = mapItem.url
    36→        self.coordinate = mapItem.placemark.coordinate
    37→        self.mapItem = mapItem
    38→
    39→        // Build address from placemark components
    40→        let placemark = mapItem.placemark
    41→        self.address = [
    42→            placemark.thoroughfare,
    43→            placemark.subLocality,
    44→            placemark.locality
    45→        ].compactMap { $0 }.joined(separator: ", ")
    46→
    47→        // Calculate distance from user if location provided
    48→        if let userLocation = userLocation {
    49→            let restaurantLocation = CLLocation(
    50→                latitude: coordinate.latitude,
    51→                longitude: coordinate.longitude
    52→            )
    53→            self.distanceFromUser = userLocation.distance(from: restaurantLocation)
    54→        }
    55→    }
    56→
    57→    // MARK: - Hashable (exclude mapItem which isn't Hashable)
    58→
    59→    func hash(into hasher: inout Hasher) {
    60→        hasher.combine(id)
    61→    }
    62→
    63→    static func == (lhs: Restaurant, rhs: Restaurant) -> Bool {
    64→        lhs.id == rhs.id
    65→    }
    66→
    67→    // MARK: - Actions
    68→
    69→    /// Open this restaurant in Apple Maps with driving directions
    70→    func openInMaps() {
    71→        mapItem.openInMaps(launchOptions: [
    72→            MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving
    73→        ])
    74→    }
    75→
    76→    /// Call the restaurant phone number
    77→    func callPhone() {
    78→        guard let phone = phoneNumber else { return }
    79→        let cleaned = phone.replacingOccurrences(of: "[^0-9]", with: "", options: .regularExpression)
    80→        if let url = URL(string: "tel://\(cleaned)") {
    81→            UIApplication.shared.open(url)
    82→        }
    83→    }
    84→}
    85→
    86→// MARK: - Preview Support
    87→
    88→#if DEBUG
    89→extension Restaurant {
    90→    static var preview: Restaurant {
    91→        let coordinate = CLLocationCoordinate2D(latitude: -23.5505, longitude: -46.6333)
    92→        let placemark = MKPlacemark(coordinate: coordinate)
    93→        let mapItem = MKMapItem(placemark: placemark)
    94→        mapItem.name = "Restaurante Exemplo"
    95→        mapItem.phoneNumber = "+55 11 99999-9999"
    96→
    97→        var restaurant = Restaurant(from: mapItem)
    98→        restaurant.distanceFromUser = 450
    99→        return restaurant
   100→    }
   101→
   102→    static var previews: [Restaurant] {
   103→        (1...5).map { i in
   104→            let coordinate = CLLocationCoordinate2D(
   105→                latitude: -23.5505 + Double(i) * 0.001,
   106→                longitude: -46.6333 + Double(i) * 0.001
   107→            )
   108→            let placemark = MKPlacemark(coordinate: coordinate)
   109→            let mapItem = MKMapItem(placemark: placemark)
   110→            mapItem.name = "Restaurante \(i)"
   111→
   112→            var restaurant = Restaurant(from: mapItem)
   113→            restaurant.distanceFromUser = Double(i * 200)
   114→            return restaurant
   115→        }
   116→    }
   117→}
   118→#endif
   119→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import Foundation
import MapKit
import CoreLocation

/// Restaurant model representing a nearby restaurant from MapKit search
struct Restaurant: Identifiable, Hashable {
    let id: UUID
    let name: String
    let category: String?
    let phoneNumber: String?
    let url: URL?
    let coordinate: CLLocationCoordinate2D
    let address: String
    let mapItem: MKMapItem

    /// Distance from user's current location
    var distanceFromUser: CLLocationDistance?

    /// Formatted distance string (e.g., "500 m" or "1.2 km")
    var formattedDistance: String {
        guard let distance = distanceFromUser else { return "" }
        if distance < 1000 {
            return String(format: "%.0f m", distance)
        } else {
            return String(format: "%.1f km", distance / 1000)
        }
    }

    /// Initialize from MKMapItem
    init(from mapItem: MKMapItem, userLocation: CLLocation? = nil) {
        self.id = UUID()
        self.name = mapItem.name ?? "Unknown Restaurant"
        self.category = mapItem.pointOfInterestCategory?.rawValue
        self.phoneNumber = mapItem.phoneNumber
        self.url = mapItem.url
        self.coordinate = mapItem.placemark.coordinate
        self.mapItem = mapItem

        // Build address from placemark components
        let placemark = mapItem.placemark
        self.address = [
            placemark.thoroughfare,
            placemark.subLocality,
            placemark.locality
        ].compactMap { $0 }.joined(separator: ", ")

        // Calculate distance from user if location provided
        if let userLocation = userLocation {
            let restaurantLocation = CLLocation(
                latitude: coordinate.latitude,
                longitude: coordinate.longitude
            )
            self.distanceFromUser = userLocation.distance(from: restaurantLocation)
        }
    }

    // MARK: - Hashable (exclude mapItem which isn't Hashable)

    func hash(into hasher: inout Hasher) {
        hasher.combine(id)
    }

    static func == (lhs: Restaurant, rhs: Restaurant) -> Bool {
        lhs.id == rhs.id
    }

    // MARK: - Actions

    /// Open this restaurant in Apple Maps with driving directions
    func openInMaps() {
        mapItem.openInMaps(launchOptions: [
            MKLaunchOptionsDirectionsModeKey: MKLaunchOptionsDirectionsModeDriving
        ])
    }

    /// Call the restaurant phone number
    func callPhone() {
        guard let phone = phoneNumber else { return }
        let cleaned = phone.replacingOccurrences(of: "[^0-9]", with: "", options: .regularExpression)
        if let url = URL(string: "tel://\(cleaned)") {
            UIApplication.shared.open(url)
        }
    }
}

// MARK: - Preview Support

#if DEBUG
extension Restaurant {
    static var preview: Restaurant {
        let coordinate = CLLocationCoordinate2D(latitude: -23.5505, longitude: -46.6333)
        let placemark = MKPlacemark(coordinate: coordinate)
        let mapItem = MKMapItem(placemark: placemark)
        mapItem.name = "Restaurante Exemplo"
        mapItem.phoneNumber = "+55 11 99999-9999"

        var restaurant = Restaurant(from: mapItem)
        restaurant.distanceFromUser = 450
        return restaurant
    }

    static var previews: [Restaurant] {
        (1...5).map { i in
            let coordinate = CLLocationCoordinate2D(
                latitude: -23.5505 + Double(i) * 0.001,
                longitude: -46.6333 + Double(i) * 0.001
            )
            let placemark = MKPlacemark(coordinate: coordinate)
            let mapItem = MKMapItem(placemark: placemark)
            mapItem.name = "Restaurante \(i)"

            var restaurant = Restaurant(from: mapItem)
            restaurant.distanceFromUser = Double(i * 200)
            return restaurant
        }
    }
}
#endif


     1→import Foundation
     2→import MapKit
     3→import CoreLocation
     4→
     5→/// Food category for filtering restaurant searches
     6→enum FoodCategory: String, CaseIterable, Identifiable {
     7→    case all = "restaurant"
     8→    case pizza = "pizza"
     9→    case burger = "hamburger"
    10→    case sushi = "sushi"
    11→    case chinese = "chinese restaurant"
    12→    case mexican = "mexican restaurant"
    13→    case italian = "italian restaurant"
    14→    case cafe = "cafe"
    15→    case fastFood = "fast food"
    16→    case bakery = "bakery"
    17→
    18→    var id: String { rawValue }
    19→
    20→    var displayName: String {
    21→        switch self {
    22→        case .all: return "All"
    23→        case .pizza: return "Pizza"
    24→        case .burger: return "Burger"
    25→        case .sushi: return "Sushi"
    26→        case .chinese: return "Chinese"
    27→        case .mexican: return "Mexican"
    28→        case .italian: return "Italian"
    29→        case .cafe: return "Café"
    30→        case .fastFood: return "Fast Food"
    31→        case .bakery: return "Bakery"
    32→        }
    33→    }
    34→
    35→    var icon: String {
    36→        switch self {
    37→        case .all: return "fork.knife"
    38→        case .pizza: return "circle.circle"
    39→        case .burger: return "takeoutbag.and.cup.and.straw"
    40→        case .sushi: return "fish"
    41→        case .chinese: return "takeoutbag.and.cup.and.straw.fill"
    42→        case .mexican: return "flame"
    43→        case .italian: return "leaf"
    44→        case .cafe: return "cup.and.saucer"
    45→        case .fastFood: return "bag"
    46→        case .bakery: return "birthday.cake"
    47→        }
    48→    }
    49→}
    50→
    51→/// Service for searching nearby restaurants using MapKit
    52→@MainActor
    53→class RestaurantService: ObservableObject {
    54→
    55→    // MARK: - Published State
    56→
    57→    @Published var restaurants: [Restaurant] = []
    58→    @Published var isLoading: Bool = false
    59→    @Published var error: String?
    60→    @Published var selectedCategory: FoodCategory = .all
    61→
    62→    // MARK: - Search Configuration
    63→
    64→    private let searchRadius: CLLocationDistance = 2000  // 2km radius
    65→    private var lastLocation: CLLocation?
    66→
    67→    // MARK: - Public Methods
    68→
    69→    /// Search for restaurants near the given location
    70→    func searchNearby(location: CLLocation, category: FoodCategory? = nil) async {
    71→        isLoading = true
    72→        error = nil
    73→        lastLocation = location
    74→
    75→        let searchCategory = category ?? selectedCategory
    76→
    77→        do {
    78→            let results = try await performSearch(near: location, query: searchCategory.rawValue)
    79→            restaurants = results.sorted { ($0.distanceFromUser ?? 0) < ($1.distanceFromUser ?? 0) }
    80→        } catch {
    81→            self.error = "Failed to search restaurants: \(error.localizedDescription)"
    82→            restaurants = []
    83→        }
    84→
    85→        isLoading = false
    86→    }
    87→
    88→    /// Change category and refresh search
    89→    func setCategory(_ category: FoodCategory) async {
    90→        selectedCategory = category
    91→        if let location = lastLocation {
    92→            await searchNearby(location: location, category: category)
    93→        }
    94→    }
    95→
    96→    /// Refresh the search with the same location
    97→    func refresh(location: CLLocation) async {
    98→        await searchNearby(location: location)
    99→    }
   100→
   101→    /// Refresh with last known location
   102→    func refresh() async {
   103→        if let location = lastLocation {
   104→            await searchNearby(location: location)
   105→        }
   106→    }
   107→
   108→    /// Clear current results
   109→    func clearResults() {
   110→        restaurants = []
   111→        error = nil
   112→    }
   113→
   114→    // MARK: - Private Methods
   115→
   116→    private func performSearch(near location: CLLocation, query: String) async throws -> [Restaurant] {
   117→        let request = MKLocalSearch.Request()
   118→        request.naturalLanguageQuery = query
   119→        request.resultTypes = .pointOfInterest
   120→
   121→        // Set search region
   122→        let region = MKCoordinateRegion(
   123→            center: location.coordinate,
   124→            latitudinalMeters: searchRadius * 2,
   125→            longitudinalMeters: searchRadius * 2
   126→        )
   127→        request.region = region
   128→
   129→        let search = MKLocalSearch(request: request)
   130→        let response = try await search.start()
   131→
   132→        return response.mapItems.map { mapItem in
   133→            Restaurant(from: mapItem, userLocation: location)
   134→        }
   135→    }
   136→}
   137→
   138→// MARK: - Preview Support
   139→
   140→#if DEBUG
   141→extension RestaurantService {
   142→    static var preview: RestaurantService {
   143→        let service = RestaurantService()
   144→        service.restaurants = Restaurant.previews
   145→        return service
   146→    }
   147→
   148→    static var loading: RestaurantService {
   149→        let service = RestaurantService()
   150→        service.isLoading = true
   151→        return service
   152→    }
   153→
   154→    static var empty: RestaurantService {
   155→        let service = RestaurantService()
   156→        service.restaurants = []
   157→        return service
   158→    }
   159→}
   160→#endif
   161→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import Foundation
import MapKit
import CoreLocation

/// Food category for filtering restaurant searches
enum FoodCategory: String, CaseIterable, Identifiable {
    case all = "restaurant"
    case pizza = "pizza"
    case burger = "hamburger"
    case sushi = "sushi"
    case chinese = "chinese restaurant"
    case mexican = "mexican restaurant"
    case italian = "italian restaurant"
    case cafe = "cafe"
    case fastFood = "fast food"
    case bakery = "bakery"

    var id: String { rawValue }

    var displayName: String {
        switch self {
        case .all: return "All"
        case .pizza: return "Pizza"
        case .burger: return "Burger"
        case .sushi: return "Sushi"
        case .chinese: return "Chinese"
        case .mexican: return "Mexican"
        case .italian: return "Italian"
        case .cafe: return "Café"
        case .fastFood: return "Fast Food"
        case .bakery: return "Bakery"
        }
    }

    var icon: String {
        switch self {
        case .all: return "fork.knife"
        case .pizza: return "circle.circle"
        case .burger: return "takeoutbag.and.cup.and.straw"
        case .sushi: return "fish"
        case .chinese: return "takeoutbag.and.cup.and.straw.fill"
        case .mexican: return "flame"
        case .italian: return "leaf"
        case .cafe: return "cup.and.saucer"
        case .fastFood: return "bag"
        case .bakery: return "birthday.cake"
        }
    }
}

/// Service for searching nearby restaurants using MapKit
@MainActor
class RestaurantService: ObservableObject {

    // MARK: - Published State

    @Published var restaurants: [Restaurant] = []
    @Published var isLoading: Bool = false
    @Published var error: String?
    @Published var selectedCategory: FoodCategory = .all

    // MARK: - Search Configuration

    private let searchRadius: CLLocationDistance = 2000  // 2km radius
    private var lastLocation: CLLocation?

    // MARK: - Public Methods

    /// Search for restaurants near the given location
    func searchNearby(location: CLLocation, category: FoodCategory? = nil) async {
        isLoading = true
        error = nil
        lastLocation = location

        let searchCategory = category ?? selectedCategory

        do {
            let results = try await performSearch(near: location, query: searchCategory.rawValue)
            restaurants = results.sorted { ($0.distanceFromUser ?? 0) < ($1.distanceFromUser ?? 0) }
        } catch {
            self.error = "Failed to search restaurants: \(error.localizedDescription)"
            restaurants = []
        }

        isLoading = false
    }

    /// Change category and refresh search
    func setCategory(_ category: FoodCategory) async {
        selectedCategory = category
        if let location = lastLocation {
            await searchNearby(location: location, category: category)
        }
    }

    /// Refresh the search with the same location
    func refresh(location: CLLocation) async {
        await searchNearby(location: location)
    }

    /// Refresh with last known location
    func refresh() async {
        if let location = lastLocation {
            await searchNearby(location: location)
        }
    }

    /// Clear current results
    func clearResults() {
        restaurants = []
        error = nil
    }

    // MARK: - Private Methods

    private func performSearch(near location: CLLocation, query: String) async throws -> [Restaurant] {
        let request = MKLocalSearch.Request()
        request.naturalLanguageQuery = query
        request.resultTypes = .pointOfInterest

        // Set search region
        let region = MKCoordinateRegion(
            center: location.coordinate,
            latitudinalMeters: searchRadius * 2,
            longitudinalMeters: searchRadius * 2
        )
        request.region = region

        let search = MKLocalSearch(request: request)
        let response = try await search.start()

        return response.mapItems.map { mapItem in
            Restaurant(from: mapItem, userLocation: location)
        }
    }
}

// MARK: - Preview Support

#if DEBUG
extension RestaurantService {
    static var preview: RestaurantService {
        let service = RestaurantService()
        service.restaurants = Restaurant.previews
        return service
    }

    static var loading: RestaurantService {
        let service = RestaurantService()
        service.isLoading = true
        return service
    }

    static var empty: RestaurantService {
        let service = RestaurantService()
        service.restaurants = []
        return service
    }
}
#endif


     1→import SwiftUI
     2→
     3→/// Root view that routes between SignIn and Main based on auth state
     4→struct ContentView: View {
     5→    @EnvironmentObject var authService: AuthenticationService
     6→
     7→    var body: some View {
     8→        Group {
     9→            if authService.isSignedIn {
    10→                MainView()
    11→            } else {
    12→                SignInView()
    13→            }
    14→        }
    15→        .animation(.easeInOut(duration: 0.3), value: authService.isSignedIn)
    16→    }
    17→}
    18→
    19→// MARK: - Preview
    20→
    21→#Preview("Signed In") {
    22→    ContentView()
    23→        .environmentObject(AuthenticationService.preview)
    24→}
    25→
    26→#Preview("Signed Out") {
    27→    ContentView()
    28→        .environmentObject(AuthenticationService.signedOut)
    29→}
    30→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import SwiftUI

/// Root view that routes between SignIn and Main based on auth state
struct ContentView: View {
    @EnvironmentObject var authService: AuthenticationService

    var body: some View {
        Group {
            if authService.isSignedIn {
                MainView()
            } else {
                SignInView()
            }
        }
        .animation(.easeInOut(duration: 0.3), value: authService.isSignedIn)
    }
}

// MARK: - Preview

#Preview("Signed In") {
    ContentView()
        .environmentObject(AuthenticationService.preview)
}

#Preview("Signed Out") {
    ContentView()
        .environmentObject(AuthenticationService.signedOut)
}


Now let me examine the main view, detail view, and other services:


     1→import SwiftUI
     2→import MapKit
     3→
     4→/// Main view with map, category filter, and restaurant list
     5→struct MainView: View {
     6→    @EnvironmentObject var authService: AuthenticationService
     7→    @StateObject private var locationService = LocationService()
     8→    @StateObject private var restaurantService = RestaurantService()
     9→    @StateObject private var favoritesService = FavoritesService.shared
    10→
    11→    @State private var selectedRestaurant: Restaurant?
    12→    @State private var cameraPosition: MapCameraPosition = .automatic
    13→    @State private var showingFavorites = false
    14→
    15→    var body: some View {
    16→        NavigationStack {
    17→            ZStack {
    18→                VStack(spacing: 0) {
    19→                    // Category filter
    20→                    categoryFilterSection
    21→
    22→                    // Map (top 35%)
    23→                    mapSection
    24→                        .frame(height: UIScreen.main.bounds.height * 0.35)
    25→
    26→                    // List (bottom)
    27→                    listSection
    28→                }
    29→
    30→                // Loading overlay
    31→                if restaurantService.isLoading || locationService.isLoading {
    32→                    loadingOverlay
    33→                }
    34→            }
    35→            .navigationTitle("FoodFinder")
    36→            .navigationBarTitleDisplayMode(.inline)
    37→            .toolbar {
    38→                ToolbarItem(placement: .topBarLeading) {
    39→                    Button {
    40→                        refreshLocation()
    41→                    } label: {
    42→                        Image(systemName: "arrow.clockwise")
    43→                    }
    44→                    .disabled(locationService.isLoading || restaurantService.isLoading)
    45→                }
    46→
    47→                ToolbarItem(placement: .topBarTrailing) {
    48→                    HStack(spacing: 16) {
    49→                        // Favorites button
    50→                        Button {
    51→                            showingFavorites = true
    52→                        } label: {
    53→                            Image(systemName: favoritesService.favorites.isEmpty ? "heart" : "heart.fill")
    54→                                .foregroundColor(favoritesService.favorites.isEmpty ? .primary : .red)
    55→                        }
    56→
    57→                        // User menu
    58→                        Menu {
    59→                            if let user = authService.currentUser {
    60→                                Text(user.displayName)
    61→                            }
    62→                            Divider()
    63→                            Button("Sign Out", role: .destructive) {
    64→                                authService.signOut()
    65→                            }
    66→                        } label: {
    67→                            Image(systemName: "person.circle")
    68→                        }
    69→                    }
    70→                }
    71→            }
    72→            .onAppear {
    73→                setupLocation()
    74→            }
    75→            .onChange(of: locationService.currentLocation) { _, newLocation in
    76→                if let location = newLocation {
    77→                    Task {
    78→                        await restaurantService.searchNearby(location: location)
    79→                        updateCameraPosition(to: location)
    80→                    }
    81→                }
    82→            }
    83→            .sheet(item: $selectedRestaurant) { restaurant in
    84→                RestaurantDetailView(restaurant: restaurant)
    85→                    .presentationDetents([.medium])
    86→            }
    87→            .sheet(isPresented: $showingFavorites) {
    88→                FavoritesView()
    89→            }
    90→        }
    91→    }
    92→
    93→    // MARK: - Category Filter Section
    94→
    95→    private var categoryFilterSection: some View {
    96→        ScrollView(.horizontal, showsIndicators: false) {
    97→            HStack(spacing: 8) {
    98→                ForEach(FoodCategory.allCases) { category in
    99→                    CategoryChip(
   100→                        category: category,
   101→                        isSelected: restaurantService.selectedCategory == category
   102→                    ) {
   103→                        Task {
   104→                            await restaurantService.setCategory(category)
   105→                        }
   106→                    }
   107→                }
   108→            }
   109→            .padding(.horizontal)
   110→            .padding(.vertical, 8)
   111→        }
   112→        .background(Color(.systemBackground))
   113→    }
   114→
   115→    // MARK: - Map Section
   116→
   117→    private var mapSection: some View {
   118→        Map(position: $cameraPosition) {
   119→            // User location marker
   120→            UserAnnotation()
   121→
   122→            // Restaurant markers
   123→            ForEach(restaurantService.restaurants) { restaurant in
   124→                Annotation(restaurant.name, coordinate: restaurant.coordinate) {
   125→                    RestaurantAnnotationView(
   126→                        restaurant: restaurant,
   127→                        isSelected: selectedRestaurant?.id == restaurant.id
   128→                    )
   129→                    .onTapGesture {
   130→                        selectedRestaurant = restaurant
   131→                    }
   132→                }
   133→            }
   134→        }
   135→        .mapControls {
   136→            MapUserLocationButton()
   137→            MapCompass()
   138→        }
   139→    }
   140→
   141→    // MARK: - List Section
   142→
   143→    private var listSection: some View {
   144→        Group {
   145→            if locationService.isDenied {
   146→                locationDeniedView
   147→            } else if restaurantService.restaurants.isEmpty && !restaurantService.isLoading && !locationService.isLoading {
   148→                emptyStateView
   149→            } else {
   150→                restaurantList
   151→            }
   152→        }
   153→    }
   154→
   155→    private var restaurantList: some View {
   156→        List(restaurantService.restaurants) { restaurant in
   157→            RestaurantRowWithFavorite(
   158→                restaurant: restaurant,
   159→                isFavorite: favoritesService.isFavorite(restaurant),
   160→                onFavoriteToggle: {
   161→                    favoritesService.toggleFavorite(restaurant)
   162→                }
   163→            )
   164→            .contentShape(Rectangle())
   165→            .onTapGesture {
   166→                selectedRestaurant = restaurant
   167→            }
   168→        }
   169→        .listStyle(.plain)
   170→        .refreshable {
   171→            await refreshData()
   172→        }
   173→    }
   174→
   175→    private var emptyStateView: some View {
   176→        VStack(spacing: 16) {
   177→            Image(systemName: "fork.knife.circle")
   178→                .font(.system(size: 48))
   179→                .foregroundColor(.secondary)
   180→
   181→            Text("No \(restaurantService.selectedCategory.displayName.lowercased()) found nearby")
   182→                .font(.headline)
   183→
   184→            Text("Try a different category or location")
   185→                .font(.subheadline)
   186→                .foregroundColor(.secondary)
   187→
   188→            Button {
   189→                refreshLocation()
   190→            } label: {
   191→                Label("Refresh", systemImage: "arrow.clockwise")
   192→            }
   193→            .buttonStyle(.bordered)
   194→        }
   195→        .frame(maxWidth: .infinity, maxHeight: .infinity)
   196→        .background(Color(.systemGroupedBackground))
   197→    }
   198→
   199→    private var locationDeniedView: some View {
   200→        VStack(spacing: 16) {
   201→            Image(systemName: "location.slash")
   202→                .font(.system(size: 48))
   203→                .foregroundColor(.orange)
   204→
   205→            Text("Location Access Required")
   206→                .font(.headline)
   207→
   208→            Text("FoodFinder needs your location to find restaurants nearby")
   209→                .font(.subheadline)
   210→                .foregroundColor(.secondary)
   211→                .multilineTextAlignment(.center)
   212→                .padding(.horizontal)
   213→
   214→            Button("Open Settings") {
   215→                locationService.openSettings()
   216→            }
   217→            .buttonStyle(.borderedProminent)
   218→            .tint(.orange)
   219→        }
   220→        .frame(maxWidth: .infinity, maxHeight: .infinity)
   221→        .background(Color(.systemGroupedBackground))
   222→    }
   223→
   224→    private var loadingOverlay: some View {
   225→        VStack(spacing: 12) {
   226→            ProgressView()
   227→                .scaleEffect(1.2)
   228→
   229→            Text(locationService.isLoading ? "Getting location..." : "Finding \(restaurantService.selectedCategory.displayName.lowercased())...")
   230→                .font(.caption)
   231→                .foregroundColor(.secondary)
   232→        }
   233→        .padding(20)
   234→        .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 12))
   235→    }
   236→
   237→    // MARK: - Methods
   238→
   239→    private func setupLocation() {
   240→        if locationService.needsPermission {
   241→            locationService.requestPermission()
   242→        } else if locationService.isAuthorized {
   243→            locationService.requestCurrentLocation()
   244→        }
   245→    }
   246→
   247→    private func refreshLocation() {
   248→        locationService.requestCurrentLocation()
   249→    }
   250→
   251→    private func refreshData() async {
   252→        if let location = locationService.currentLocation {
   253→            await restaurantService.refresh(location: location)
   254→        }
   255→    }
   256→
   257→    private func updateCameraPosition(to location: CLLocation) {
   258→        cameraPosition = .region(MKCoordinateRegion(
   259→            center: location.coordinate,
   260→            latitudinalMeters: 4000,
   261→            longitudinalMeters: 4000
   262→        ))
   263→    }
   264→}
   265→
   266→// MARK: - Category Chip Component
   267→
   268→struct CategoryChip: View {
   269→    let category: FoodCategory
   270→    let isSelected: Bool
   271→    let action: () -> Void
   272→
   273→    var body: some View {
   274→        Button(action: action) {
   275→            HStack(spacing: 6) {
   276→                Image(systemName: category.icon)
   277→                    .font(.system(size: 12))
   278→                Text(category.displayName)
   279→                    .font(.subheadline)
   280→                    .fontWeight(isSelected ? .semibold : .regular)
   281→            }
   282→            .padding(.horizontal, 12)
   283→            .padding(.vertical, 8)
   284→            .background(isSelected ? Color.orange : Color(.systemGray6))
   285→            .foregroundColor(isSelected ? .white : .primary)
   286→            .cornerRadius(20)
   287→        }
   288→        .buttonStyle(.plain)
   289→    }
   290→}
   291→
   292→// MARK: - Restaurant Row with Favorite
   293→
   294→struct RestaurantRowWithFavorite: View {
   295→    let restaurant: Restaurant
   296→    let isFavorite: Bool
   297→    let onFavoriteToggle: () -> Void
   298→
   299→    var body: some View {
   300→        HStack(spacing: 12) {
   301→            // Icon
   302→            ZStack {
   303→                Circle()
   304→                    .fill(Color.orange.opacity(0.1))
   305→                    .frame(width: 44, height: 44)
   306→
   307→                Image(systemName: "fork.knife")
   308→                    .foregroundColor(.orange)
   309→            }
   310→
   311→            // Info
   312→            VStack(alignment: .leading, spacing: 4) {
   313→                Text(restaurant.name)
   314→                    .font(.headline)
   315→                    .lineLimit(1)
   316→
   317→                if !restaurant.address.isEmpty {
   318→                    Text(restaurant.address)
   319→                        .font(.caption)
   320→                        .foregroundColor(.secondary)
   321→                        .lineLimit(1)
   322→                }
   323→            }
   324→
   325→            Spacer()
   326→
   327→            // Distance Badge
   328→            if !restaurant.formattedDistance.isEmpty {
   329→                Text(restaurant.formattedDistance)
   330→                    .font(.caption)
   331→                    .fontWeight(.medium)
   332→                    .foregroundColor(.secondary)
   333→                    .padding(.horizontal, 8)
   334→                    .padding(.vertical, 4)
   335→                    .background(Color(.systemGray6))
   336→                    .cornerRadius(8)
   337→            }
   338→
   339→            // Favorite Button
   340→            Button {
   341→                onFavoriteToggle()
   342→            } label: {
   343→                Image(systemName: isFavorite ? "heart.fill" : "heart")
   344→                    .foregroundColor(isFavorite ? .red : .gray)
   345→                    .font(.system(size: 18))
   346→            }
   347→            .buttonStyle(.plain)
   348→
   349→            // Chevron
   350→            Image(systemName: "chevron.right")
   351→                .font(.caption)
   352→                .foregroundColor(.secondary)
   353→        }
   354→        .padding(.vertical, 4)
   355→    }
   356→}
   357→
   358→// MARK: - Preview
   359→
   360→#Preview {
   361→    MainView()
   362→        .environmentObject(AuthenticationService.preview)
   363→}
   364→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import SwiftUI
import MapKit

/// Main view with map, category filter, and restaurant list
struct MainView: View {
    @EnvironmentObject var authService: AuthenticationService
    @StateObject private var locationService = LocationService()
    @StateObject private var restaurantService = RestaurantService()
    @StateObject private var favoritesService = FavoritesService.shared

    @State private var selectedRestaurant: Restaurant?
    @State private var cameraPosition: MapCameraPosition = .automatic
    @State private var showingFavorites = false

    var body: some View {
        NavigationStack {
            ZStack {
                VStack(spacing: 0) {
                    // Category filter
                    categoryFilterSection

                    // Map (top 35%)
                    mapSection
                        .frame(height: UIScreen.main.bounds.height * 0.35)

                    // List (bottom)
                    listSection
                }

                // Loading overlay
                if restaurantService.isLoading || locationService.isLoading {
                    loadingOverlay
                }
            }
            .navigationTitle("FoodFinder")
            .navigationBarTitleDisplayMode(.inline)
            .toolbar {
                ToolbarItem(placement: .topBarLeading) {
                    Button {
                        refreshLocation()
                    } label: {
                        Image(systemName: "arrow.clockwise")
                    }
                    .disabled(locationService.isLoading || restaurantService.isLoading)
                }

                ToolbarItem(placement: .topBarTrailing) {
                    HStack(spacing: 16) {
                        // Favorites button
                        Button {
                            showingFavorites = true
                        } label: {
                            Image(systemName: favoritesService.favorites.isEmpty ? "heart" : "heart.fill")
                                .foregroundColor(favoritesService.favorites.isEmpty ? .primary : .red)
                        }

                        // User menu
                        Menu {
                            if let user = authService.currentUser {
                                Text(user.displayName)
                            }
                            Divider()
                            Button("Sign Out", role: .destructive) {
                                authService.signOut()
                            }
                        } label: {
                            Image(systemName: "person.circle")
                        }
                    }
                }
            }
            .onAppear {
                setupLocation()
            }
            .onChange(of: locationService.currentLocation) { _, newLocation in
                if let location = newLocation {
                    Task {
                        await restaurantService.searchNearby(location: location)
                        updateCameraPosition(to: location)
                    }
                }
            }
            .sheet(item: $selectedRestaurant) { restaurant in
                RestaurantDetailView(restaurant: restaurant)
                    .presentationDetents([.medium])
            }
            .sheet(isPresented: $showingFavorites) {
                FavoritesView()
            }
        }
    }

    // MARK: - Category Filter Section

    private var categoryFilterSection: some View {
        ScrollView(.horizontal, showsIndicators: false) {
            HStack(spacing: 8) {
                ForEach(FoodCategory.allCases) { category in
                    CategoryChip(
                        category: category,
                        isSelected: restaurantService.selectedCategory == category
                    ) {
                        Task {
                            await restaurantService.setCategory(category)
                        }
                    }
                }
            }
            .padding(.horizontal)
            .padding(.vertical, 8)
        }
        .background(Color(.systemBackground))
    }

    // MARK: - Map Section

    private var mapSection: some View {
        Map(position: $cameraPosition) {
            // User location marker
            UserAnnotation()

            // Restaurant markers
            ForEach(restaurantService.restaurants) { restaurant in
                Annotation(restaurant.name, coordinate: restaurant.coordinate) {
                    RestaurantAnnotationView(
                        restaurant: restaurant,
                        isSelected: selectedRestaurant?.id == restaurant.id
                    )
                    .onTapGesture {
                        selectedRestaurant = restaurant
                    }
                }
            }
        }
        .mapControls {
            MapUserLocationButton()
            MapCompass()
        }
    }

    // MARK: - List Section

    private var listSection: some View {
        Group {
            if locationService.isDenied {
                locationDeniedView
            } else if restaurantService.restaurants.isEmpty && !restaurantService.isLoading && !locationService.isLoading {
                emptyStateView
            } else {
                restaurantList
            }
        }
    }

    private var restaurantList: some View {
        List(restaurantService.restaurants) { restaurant in
            RestaurantRowWithFavorite(
                restaurant: restaurant,
                isFavorite: favoritesService.isFavorite(restaurant),
                onFavoriteToggle: {
                    favoritesService.toggleFavorite(restaurant)
                }
            )
            .contentShape(Rectangle())
            .onTapGesture {
                selectedRestaurant = restaurant
            }
        }
        .listStyle(.plain)
        .refreshable {
            await refreshData()
        }
    }

    private var emptyStateView: some View {
        VStack(spacing: 16) {
            Image(systemName: "fork.knife.circle")
                .font(.system(size: 48))
                .foregroundColor(.secondary)

            Text("No \(restaurantService.selectedCategory.displayName.lowercased()) found nearby")
                .font(.headline)

            Text("Try a different category or location")
                .font(.subheadline)
                .foregroundColor(.secondary)

            Button {
                refreshLocation()
            } label: {
                Label("Refresh", systemImage: "arrow.clockwise")
            }
            .buttonStyle(.bordered)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(Color(.systemGroupedBackground))
    }

    private var locationDeniedView: some View {
        VStack(spacing: 16) {
            Image(systemName: "location.slash")
                .font(.system(size: 48))
                .foregroundColor(.orange)

            Text("Location Access Required")
                .font(.headline)

            Text("FoodFinder needs your location to find restaurants nearby")
                .font(.subheadline)
                .foregroundColor(.secondary)
                .multilineTextAlignment(.center)
                .padding(.horizontal)

            Button("Open Settings") {
                locationService.openSettings()
            }
            .buttonStyle(.borderedProminent)
            .tint(.orange)
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
        .background(Color(.systemGroupedBackground))
    }

    private var loadingOverlay: some View {
        VStack(spacing: 12) {
            ProgressView()
                .scaleEffect(1.2)

            Text(locationService.isLoading ? "Getting location..." : "Finding \(restaurantService.selectedCategory.displayName.lowercased())...")
                .font(.caption)
                .foregroundColor(.secondary)
        }
        .padding(20)
        .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 12))
    }

    // MARK: - Methods

    private func setupLocation() {
        if locationService.needsPermission {
            locationService.requestPermission()
        } else if locationService.isAuthorized {
            locationService.requestCurrentLocation()
        }
    }

    private func refreshLocation() {
        locationService.requestCurrentLocation()
    }

    private func refreshData() async {
        if let location = locationService.currentLocation {
            await restaurantService.refresh(location: location)
        }
    }

    private func updateCameraPosition(to location: CLLocation) {
        cameraPosition = .region(MKCoordinateRegion(
            center: location.coordinate,
            latitudinalMeters: 4000,
            longitudinalMeters: 4000
        ))
    }
}

// MARK: - Category Chip Component

struct CategoryChip: View {
    let category: FoodCategory
    let isSelected: Bool
    let action: () -> Void

    var body: some View {
        Button(action: action) {
            HStack(spacing: 6) {
                Image(systemName: category.icon)
                    .font(.system(size: 12))
                Text(category.displayName)
                    .font(.subheadline)
                    .fontWeight(isSelected ? .semibold : .regular)
            }
            .padding(.horizontal, 12)
            .padding(.vertical, 8)
            .background(isSelected ? Color.orange : Color(.systemGray6))
            .foregroundColor(isSelected ? .white : .primary)
            .cornerRadius(20)
        }
        .buttonStyle(.plain)
    }
}

// MARK: - Restaurant Row with Favorite

struct RestaurantRowWithFavorite: View {
    let restaurant: Restaurant
    let isFavorite: Bool
    let onFavoriteToggle: () -> Void

    var body: some View {
        HStack(spacing: 12) {
            // Icon
            ZStack {
                Circle()
                    .fill(Color.orange.opacity(0.1))
                    .frame(width: 44, height: 44)

                Image(systemName: "fork.knife")
                    .foregroundColor(.orange)
            }

            // Info
            VStack(alignment: .leading, spacing: 4) {
                Text(restaurant.name)
                    .font(.headline)
                    .lineLimit(1)

                if !restaurant.address.isEmpty {
                    Text(restaurant.address)
                        .font(.caption)
                        .foregroundColor(.secondary)
                        .lineLimit(1)
                }
            }

            Spacer()

            // Distance Badge
            if !restaurant.formattedDistance.isEmpty {
                Text(restaurant.formattedDistance)
                    .font(.caption)
                    .fontWeight(.medium)
                    .foregroundColor(.secondary)
                    .padding(.horizontal, 8)
                    .padding(.vertical, 4)
                    .background(Color(.systemGray6))
                    .cornerRadius(8)
            }

            // Favorite Button
            Button {
                onFavoriteToggle()
            } label: {
                Image(systemName: isFavorite ? "heart.fill" : "heart")
                    .foregroundColor(isFavorite ? .red : .gray)
                    .font(.system(size: 18))
            }
            .buttonStyle(.plain)

            // Chevron
            Image(systemName: "chevron.right")
                .font(.caption)
                .foregroundColor(.secondary)
        }
        .padding(.vertical, 4)
    }
}

// MARK: - Preview

#Preview {
    MainView()
        .environmentObject(AuthenticationService.preview)
}


     1→import SwiftUI
     2→
     3→/// Detail view for a restaurant with actions
     4→struct RestaurantDetailView: View {
     5→    let restaurant: Restaurant
     6→    @Environment(\.dismiss) private var dismiss
     7→    @StateObject private var favoritesService = FavoritesService.shared
     8→
     9→    private var isFavorite: Bool {
    10→        favoritesService.isFavorite(restaurant)
    11→    }
    12→
    13→    var body: some View {
    14→        NavigationStack {
    15→            VStack(spacing: 0) {
    16→                // Header
    17→                headerSection
    18→                    .padding()
    19→
    20→                Divider()
    21→
    22→                // Actions List
    23→                actionsList
    24→            }
    25→            .navigationBarTitleDisplayMode(.inline)
    26→            .toolbar {
    27→                ToolbarItem(placement: .topBarLeading) {
    28→                    Button {
    29→                        favoritesService.toggleFavorite(restaurant)
    30→                    } label: {
    31→                        Image(systemName: isFavorite ? "heart.fill" : "heart")
    32→                            .foregroundColor(isFavorite ? .red : .gray)
    33→                    }
    34→                }
    35→
    36→                ToolbarItem(placement: .topBarTrailing) {
    37→                    Button("Done") {
    38→                        dismiss()
    39→                    }
    40→                }
    41→            }
    42→        }
    43→    }
    44→
    45→    // MARK: - Header Section
    46→
    47→    private var headerSection: some View {
    48→        VStack(spacing: 12) {
    49→            // Icon with favorite indicator
    50→            ZStack(alignment: .topTrailing) {
    51→                ZStack {
    52→                    Circle()
    53→                        .fill(Color.orange.opacity(0.15))
    54→                        .frame(width: 80, height: 80)
    55→
    56→                    Image(systemName: "fork.knife")
    57→                        .font(.system(size: 36))
    58→                        .foregroundColor(.orange)
    59→                }
    60→
    61→                if isFavorite {
    62→                    Image(systemName: "heart.fill")
    63→                        .font(.system(size: 16))
    64→                        .foregroundColor(.red)
    65→                        .padding(4)
    66→                        .background(Color(.systemBackground))
    67→                        .clipShape(Circle())
    68→                        .offset(x: 4, y: -4)
    69→                }
    70→            }
    71→
    72→            // Name
    73→            Text(restaurant.name)
    74→                .font(.title2)
    75→                .fontWeight(.bold)
    76→                .multilineTextAlignment(.center)
    77→
    78→            // Address
    79→            if !restaurant.address.isEmpty {
    80→                Text(restaurant.address)
    81→                    .font(.subheadline)
    82→                    .foregroundColor(.secondary)
    83→                    .multilineTextAlignment(.center)
    84→            }
    85→
    86→            // Distance Badge
    87→            if !restaurant.formattedDistance.isEmpty {
    88→                Text(restaurant.formattedDistance)
    89→                    .font(.caption)
    90→                    .fontWeight(.medium)
    91→                    .padding(.horizontal, 12)
    92→                    .padding(.vertical, 6)
    93→                    .background(Color.orange.opacity(0.1))
    94→                    .foregroundColor(.orange)
    95→                    .cornerRadius(12)
    96→            }
    97→        }
    98→    }
    99→
   100→    // MARK: - Actions List
   101→
   102→    private var actionsList: some View {
   103→        List {
   104→            // Favorite toggle
   105→            Section {
   106→                Button {
   107→                    favoritesService.toggleFavorite(restaurant)
   108→                } label: {
   109→                    Label(
   110→                        isFavorite ? "Remove from Favorites" : "Add to Favorites",
   111→                        systemImage: isFavorite ? "heart.slash.fill" : "heart"
   112→                    )
   113→                    .foregroundColor(isFavorite ? .red : .primary)
   114→                }
   115→            }
   116→
   117→            // Actions
   118→            Section {
   119→                // Get Directions
   120→                Button {
   121→                    restaurant.openInMaps()
   122→                } label: {
   123→                    Label("Get Directions", systemImage: "arrow.triangle.turn.up.right.diamond.fill")
   124→                }
   125→
   126→                // Phone (if available)
   127→                if let phone = restaurant.phoneNumber {
   128→                    Button {
   129→                        restaurant.callPhone()
   130→                    } label: {
   131→                        Label(phone, systemImage: "phone.fill")
   132→                    }
   133→                }
   134→
   135→                // Website (if available)
   136→                if let url = restaurant.url {
   137→                    Link(destination: url) {
   138→                        Label("Visit Website", systemImage: "safari.fill")
   139→                    }
   140→                }
   141→            }
   142→        }
   143→        .listStyle(.insetGrouped)
   144→    }
   145→}
   146→
   147→// MARK: - Preview
   148→
   149→#Preview {
   150→    RestaurantDetailView(restaurant: .preview)
   151→}
   152→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import SwiftUI

/// Detail view for a restaurant with actions
struct RestaurantDetailView: View {
    let restaurant: Restaurant
    @Environment(\.dismiss) private var dismiss
    @StateObject private var favoritesService = FavoritesService.shared

    private var isFavorite: Bool {
        favoritesService.isFavorite(restaurant)
    }

    var body: some View {
        NavigationStack {
            VStack(spacing: 0) {
                // Header
                headerSection
                    .padding()

                Divider()

                // Actions List
                actionsList
            }
            .navigationBarTitleDisplayMode(.inline)
            .toolbar {
                ToolbarItem(placement: .topBarLeading) {
                    Button {
                        favoritesService.toggleFavorite(restaurant)
                    } label: {
                        Image(systemName: isFavorite ? "heart.fill" : "heart")
                            .foregroundColor(isFavorite ? .red : .gray)
                    }
                }

                ToolbarItem(placement: .topBarTrailing) {
                    Button("Done") {
                        dismiss()
                    }
                }
            }
        }
    }

    // MARK: - Header Section

    private var headerSection: some View {
        VStack(spacing: 12) {
            // Icon with favorite indicator
            ZStack(alignment: .topTrailing) {
                ZStack {
                    Circle()
                        .fill(Color.orange.opacity(0.15))
                        .frame(width: 80, height: 80)

                    Image(systemName: "fork.knife")
                        .font(.system(size: 36))
                        .foregroundColor(.orange)
                }

                if isFavorite {
                    Image(systemName: "heart.fill")
                        .font(.system(size: 16))
                        .foregroundColor(.red)
                        .padding(4)
                        .background(Color(.systemBackground))
                        .clipShape(Circle())
                        .offset(x: 4, y: -4)
                }
            }

            // Name
            Text(restaurant.name)
                .font(.title2)
                .fontWeight(.bold)
                .multilineTextAlignment(.center)

            // Address
            if !restaurant.address.isEmpty {
                Text(restaurant.address)
                    .font(.subheadline)
                    .foregroundColor(.secondary)
                    .multilineTextAlignment(.center)
            }

            // Distance Badge
            if !restaurant.formattedDistance.isEmpty {
                Text(restaurant.formattedDistance)
                    .font(.caption)
                    .fontWeight(.medium)
                    .padding(.horizontal, 12)
                    .padding(.vertical, 6)
                    .background(Color.orange.opacity(0.1))
                    .foregroundColor(.orange)
                    .cornerRadius(12)
            }
        }
    }

    // MARK: - Actions List

    private var actionsList: some View {
        List {
            // Favorite toggle
            Section {
                Button {
                    favoritesService.toggleFavorite(restaurant)
                } label: {
                    Label(
                        isFavorite ? "Remove from Favorites" : "Add to Favorites",
                        systemImage: isFavorite ? "heart.slash.fill" : "heart"
                    )
                    .foregroundColor(isFavorite ? .red : .primary)
                }
            }

            // Actions
            Section {
                // Get Directions
                Button {
                    restaurant.openInMaps()
                } label: {
                    Label("Get Directions", systemImage: "arrow.triangle.turn.up.right.diamond.fill")
                }

                // Phone (if available)
                if let phone = restaurant.phoneNumber {
                    Button {
                        restaurant.callPhone()
                    } label: {
                        Label(phone, systemImage: "phone.fill")
                    }
                }

                // Website (if available)
                if let url = restaurant.url {
                    Link(destination: url) {
                        Label("Visit Website", systemImage: "safari.fill")
                    }
                }
            }
        }
        .listStyle(.insetGrouped)
    }
}

// MARK: - Preview

#Preview {
    RestaurantDetailView(restaurant: .preview)
}


     1→import Foundation
     2→import CoreLocation
     3→import SwiftUI
     4→
     5→/// Service for handling device location using CoreLocation
     6→@MainActor
     7→class LocationService: NSObject, ObservableObject {
     8→
     9→    // MARK: - Published State
    10→
    11→    @Published var currentLocation: CLLocation?
    12→    @Published var authorizationStatus: CLAuthorizationStatus = .notDetermined
    13→    @Published var locationError: String?
    14→    @Published var isLoading: Bool = false
    15→
    16→    // MARK: - Private
    17→
    18→    private let locationManager = CLLocationManager()
    19→
    20→    // MARK: - Computed Properties
    21→
    22→    /// Check if location access is authorized
    23→    var isAuthorized: Bool {
    24→        authorizationStatus == .authorizedWhenInUse ||
    25→        authorizationStatus == .authorizedAlways
    26→    }
    27→
    28→    /// Check if permission needs to be requested
    29→    var needsPermission: Bool {
    30→        authorizationStatus == .notDetermined
    31→    }
    32→
    33→    /// Check if location access was denied
    34→    var isDenied: Bool {
    35→        authorizationStatus == .denied || authorizationStatus == .restricted
    36→    }
    37→
    38→    // MARK: - Initialization
    39→
    40→    override init() {
    41→        super.init()
    42→        locationManager.delegate = self
    43→        locationManager.desiredAccuracy = kCLLocationAccuracyBest
    44→        authorizationStatus = locationManager.authorizationStatus
    45→    }
    46→
    47→    // MARK: - Public Methods
    48→
    49→    /// Request location permission from user
    50→    func requestPermission() {
    51→        locationManager.requestWhenInUseAuthorization()
    52→    }
    53→
    54→    /// Start continuous location updates
    55→    func startUpdatingLocation() {
    56→        guard isAuthorized else {
    57→            locationError = "Location permission not granted"
    58→            return
    59→        }
    60→
    61→        isLoading = true
    62→        locationError = nil
    63→        locationManager.startUpdatingLocation()
    64→    }
    65→
    66→    /// Stop location updates
    67→    func stopUpdatingLocation() {
    68→        locationManager.stopUpdatingLocation()
    69→        isLoading = false
    70→    }
    71→
    72→    /// Request a single location update
    73→    func requestCurrentLocation() {
    74→        guard isAuthorized else {
    75→            if needsPermission {
    76→                requestPermission()
    77→            } else {
    78→                locationError = "Location access denied. Please enable in Settings."
    79→            }
    80→            return
    81→        }
    82→
    83→        isLoading = true
    84→        locationError = nil
    85→        locationManager.requestLocation()
    86→    }
    87→
    88→    /// Open device Settings app to location settings
    89→    func openSettings() {
    90→        guard let settingsURL = URL(string: UIApplication.openSettingsURLString) else { return }
    91→        UIApplication.shared.open(settingsURL)
    92→    }
    93→}
    94→
    95→// MARK: - CLLocationManagerDelegate
    96→
    97→extension LocationService: CLLocationManagerDelegate {
    98→
    99→    nonisolated func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
   100→        Task { @MainActor in
   101→            authorizationStatus = manager.authorizationStatus
   102→
   103→            if isAuthorized && currentLocation == nil {
   104→                startUpdatingLocation()
   105→            }
   106→        }
   107→    }
   108→
   109→    nonisolated func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
   110→        Task { @MainActor in
   111→            isLoading = false
   112→            guard let location = locations.last else { return }
   113→            currentLocation = location
   114→            stopUpdatingLocation()  // For MVP, just get one location
   115→        }
   116→    }
   117→
   118→    nonisolated func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
   119→        Task { @MainActor in
   120→            isLoading = false
   121→
   122→            if let clError = error as? CLError {
   123→                switch clError.code {
   124→                case .denied:
   125→                    locationError = "Location access denied"
   126→                case .locationUnknown:
   127→                    locationError = "Unable to determine location"
   128→                default:
   129→                    locationError = "Location error: \(error.localizedDescription)"
   130→                }
   131→            } else {
   132→                locationError = error.localizedDescription
   133→            }
   134→        }
   135→    }
   136→}
   137→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import Foundation
import CoreLocation
import SwiftUI

/// Service for handling device location using CoreLocation
@MainActor
class LocationService: NSObject, ObservableObject {

    // MARK: - Published State

    @Published var currentLocation: CLLocation?
    @Published var authorizationStatus: CLAuthorizationStatus = .notDetermined
    @Published var locationError: String?
    @Published var isLoading: Bool = false

    // MARK: - Private

    private let locationManager = CLLocationManager()

    // MARK: - Computed Properties

    /// Check if location access is authorized
    var isAuthorized: Bool {
        authorizationStatus == .authorizedWhenInUse ||
        authorizationStatus == .authorizedAlways
    }

    /// Check if permission needs to be requested
    var needsPermission: Bool {
        authorizationStatus == .notDetermined
    }

    /// Check if location access was denied
    var isDenied: Bool {
        authorizationStatus == .denied || authorizationStatus == .restricted
    }

    // MARK: - Initialization

    override init() {
        super.init()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        authorizationStatus = locationManager.authorizationStatus
    }

    // MARK: - Public Methods

    /// Request location permission from user
    func requestPermission() {
        locationManager.requestWhenInUseAuthorization()
    }

    /// Start continuous location updates
    func startUpdatingLocation() {
        guard isAuthorized else {
            locationError = "Location permission not granted"
            return
        }

        isLoading = true
        locationError = nil
        locationManager.startUpdatingLocation()
    }

    /// Stop location updates
    func stopUpdatingLocation() {
        locationManager.stopUpdatingLocation()
        isLoading = false
    }

    /// Request a single location update
    func requestCurrentLocation() {
        guard isAuthorized else {
            if needsPermission {
                requestPermission()
            } else {
                locationError = "Location access denied. Please enable in Settings."
            }
            return
        }

        isLoading = true
        locationError = nil
        locationManager.requestLocation()
    }

    /// Open device Settings app to location settings
    func openSettings() {
        guard let settingsURL = URL(string: UIApplication.openSettingsURLString) else { return }
        UIApplication.shared.open(settingsURL)
    }
}

// MARK: - CLLocationManagerDelegate

extension LocationService: CLLocationManagerDelegate {

    nonisolated func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
        Task { @MainActor in
            authorizationStatus = manager.authorizationStatus

            if isAuthorized && currentLocation == nil {
                startUpdatingLocation()
            }
        }
    }

    nonisolated func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        Task { @MainActor in
            isLoading = false
            guard let location = locations.last else { return }
            currentLocation = location
            stopUpdatingLocation()  // For MVP, just get one location
        }
    }

    nonisolated func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        Task { @MainActor in
            isLoading = false

            if let clError = error as? CLError {
                switch clError.code {
                case .denied:
                    locationError = "Location access denied"
                case .locationUnknown:
                    locationError = "Unable to determine location"
                default:
                    locationError = "Location error: \(error.localizedDescription)"
                }
            } else {
                locationError = error.localizedDescription
            }
        }
    }
}


     1→import Foundation
     2→import AuthenticationServices
     3→import SwiftUI
     4→
     5→/// Service for handling Apple Sign-In authentication
     6→@MainActor
     7→class AuthenticationService: ObservableObject {
     8→
     9→    // MARK: - Published State
    10→
    11→    @Published var isSignedIn: Bool = false
    12→    @Published var currentUser: User?
    13→    @Published var isVerifying: Bool = false
    14→    @Published var authError: String?
    15→
    16→    // MARK: - Dependencies
    17→
    18→    private let keychain = KeychainService.shared
    19→
    20→    // MARK: - Initialization
    21→
    22→    init() {
    23→        checkExistingCredentials()
    24→    }
    25→
    26→    // MARK: - Credential Management
    27→
    28→    /// Check if user has existing valid credentials on app launch
    29→    func checkExistingCredentials() {
    30→        guard let userID = keychain.appleUserID, !userID.isEmpty else {
    31→            isSignedIn = false
    32→            return
    33→        }
    34→
    35→        currentUser = User(
    36→            id: userID,
    37→            email: keychain.appleUserEmail,
    38→            fullName: keychain.appleUserName
    39→        )
    40→
    41→        // Verify the credential state with Apple
    42→        verifyCredentialState(userID: userID)
    43→    }
    44→
    45→    /// Verify credential state with Apple's servers
    46→    func verifyCredentialState(userID: String) {
    47→        isVerifying = true
    48→
    49→        let provider = ASAuthorizationAppleIDProvider()
    50→        provider.getCredentialState(forUserID: userID) { [weak self] state, error in
    51→            Task { @MainActor in
    52→                self?.isVerifying = false
    53→
    54→                if error != nil {
    55→                    // Don't sign out on network errors - keep existing session
    56→                    self?.isSignedIn = self?.keychain.isAppleSignedIn ?? false
    57→                    return
    58→                }
    59→
    60→                switch state {
    61→                case .authorized:
    62→                    self?.isSignedIn = true
    63→
    64→                case .revoked:
    65→                    self?.signOut()
    66→                    self?.authError = "Your Apple ID access was revoked. Please sign in again."
    67→
    68→                case .notFound:
    69→                    self?.signOut()
    70→                    self?.authError = "Apple ID credentials not found. Please sign in again."
    71→
    72→                case .transferred:
    73→                    self?.isSignedIn = true
    74→
    75→                @unknown default:
    76→                    self?.isSignedIn = self?.keychain.isAppleSignedIn ?? false
    77→                }
    78→            }
    79→        }
    80→    }
    81→
    82→    // MARK: - Sign In Handling
    83→
    84→    /// Handle the result from Apple Sign-In
    85→    func handleSignInResult(_ result: Result<ASAuthorization, Error>) {
    86→        switch result {
    87→        case .success(let authorization):
    88→            handleSuccessfulAuthorization(authorization)
    89→
    90→        case .failure(let error):
    91→            handleAuthorizationError(error)
    92→        }
    93→    }
    94→
    95→    private func handleSuccessfulAuthorization(_ authorization: ASAuthorization) {
    96→        guard let appleIDCredential = authorization.credential as? ASAuthorizationAppleIDCredential else {
    97→            authError = "Invalid authentication response"
    98→            return
    99→        }
   100→
   101→        // Extract user information
   102→        let userIdentifier = appleIDCredential.user
   103→        let email = appleIDCredential.email
   104→        let fullName = appleIDCredential.fullName
   105→
   106→        // Format the full name
   107→        var formattedName: String?
   108→        if let fullName = fullName {
   109→            let formatter = PersonNameComponentsFormatter()
   110→            formatter.style = .default
   111→            formattedName = formatter.string(from: fullName)
   112→        }
   113→
   114→        // Save to Keychain
   115→        keychain.appleUserID = userIdentifier
   116→
   117→        // Email and name are only provided on first sign-in
   118→        // Don't overwrite if we already have them
   119→        if let email = email {
   120→            keychain.appleUserEmail = email
   121→        }
   122→        if let name = formattedName, !name.isEmpty {
   123→            keychain.appleUserName = name
   124→        }
   125→
   126→        // Update published state
   127→        currentUser = User(
   128→            id: userIdentifier,
   129→            email: keychain.appleUserEmail,
   130→            fullName: keychain.appleUserName
   131→        )
   132→        isSignedIn = true
   133→        authError = nil
   134→    }
   135→
   136→    private func handleAuthorizationError(_ error: Error) {
   137→        let authError = error as? ASAuthorizationError
   138→
   139→        switch authError?.code {
   140→        case .canceled:
   141→            self.authError = nil // Don't show error for user cancellation
   142→
   143→        case .invalidResponse:
   144→            self.authError = "Invalid response from Apple. Please try again."
   145→
   146→        case .notHandled:
   147→            self.authError = "Sign-In request was not handled. Please try again."
   148→
   149→        case .failed:
   150→            self.authError = "Sign-In failed. Please check your internet connection and try again."
   151→
   152→        case .notInteractive:
   153→            self.authError = "Please enable Apple Sign-In in your device settings."
   154→
   155→        case .unknown:
   156→            self.authError = "An unknown error occurred. Please try again."
   157→
   158→        default:
   159→            self.authError = error.localizedDescription
   160→        }
   161→    }
   162→
   163→    // MARK: - Sign Out
   164→
   165→    /// Sign out the current user
   166→    func signOut() {
   167→        // Clear Keychain credentials
   168→        keychain.clearAppleCredentials()
   169→
   170→        // Clear local state
   171→        currentUser = nil
   172→        isSignedIn = false
   173→        authError = nil
   174→    }
   175→}
   176→
   177→// MARK: - Preview Support
   178→
   179→#if DEBUG
   180→extension AuthenticationService {
   181→    static var preview: AuthenticationService {
   182→        let service = AuthenticationService()
   183→        service.isSignedIn = true
   184→        service.currentUser = User.preview
   185→        return service
   186→    }
   187→
   188→    static var signedOut: AuthenticationService {
   189→        let service = AuthenticationService()
   190→        service.isSignedIn = false
   191→        return service
   192→    }
   193→}
   194→#endif
   195→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import Foundation
import AuthenticationServices
import SwiftUI

/// Service for handling Apple Sign-In authentication
@MainActor
class AuthenticationService: ObservableObject {

    // MARK: - Published State

    @Published var isSignedIn: Bool = false
    @Published var currentUser: User?
    @Published var isVerifying: Bool = false
    @Published var authError: String?

    // MARK: - Dependencies

    private let keychain = KeychainService.shared

    // MARK: - Initialization

    init() {
        checkExistingCredentials()
    }

    // MARK: - Credential Management

    /// Check if user has existing valid credentials on app launch
    func checkExistingCredentials() {
        guard let userID = keychain.appleUserID, !userID.isEmpty else {
            isSignedIn = false
            return
        }

        currentUser = User(
            id: userID,
            email: keychain.appleUserEmail,
            fullName: keychain.appleUserName
        )

        // Verify the credential state with Apple
        verifyCredentialState(userID: userID)
    }

    /// Verify credential state with Apple's servers
    func verifyCredentialState(userID: String) {
        isVerifying = true

        let provider = ASAuthorizationAppleIDProvider()
        provider.getCredentialState(forUserID: userID) { [weak self] state, error in
            Task { @MainActor in
                self?.isVerifying = false

                if error != nil {
                    // Don't sign out on network errors - keep existing session
                    self?.isSignedIn = self?.keychain.isAppleSignedIn ?? false
                    return
                }

                switch state {
                case .authorized:
                    self?.isSignedIn = true

                case .revoked:
                    self?.signOut()
                    self?.authError = "Your Apple ID access was revoked. Please sign in again."

                case .notFound:
                    self?.signOut()
                    self?.authError = "Apple ID credentials not found. Please sign in again."

                case .transferred:
                    self?.isSignedIn = true

                @unknown default:
                    self?.isSignedIn = self?.keychain.isAppleSignedIn ?? false
                }
            }
        }
    }

    // MARK: - Sign In Handling

    /// Handle the result from Apple Sign-In
    func handleSignInResult(_ result: Result<ASAuthorization, Error>) {
        switch result {
        case .success(let authorization):
            handleSuccessfulAuthorization(authorization)

        case .failure(let error):
            handleAuthorizationError(error)
        }
    }

    private func handleSuccessfulAuthorization(_ authorization: ASAuthorization) {
        guard let appleIDCredential = authorization.credential as? ASAuthorizationAppleIDCredential else {
            authError = "Invalid authentication response"
            return
        }

        // Extract user information
        let userIdentifier = appleIDCredential.user
        let email = appleIDCredential.email
        let fullName = appleIDCredential.fullName

        // Format the full name
        var formattedName: String?
        if let fullName = fullName {
            let formatter = PersonNameComponentsFormatter()
            formatter.style = .default
            formattedName = formatter.string(from: fullName)
        }

        // Save to Keychain
        keychain.appleUserID = userIdentifier

        // Email and name are only provided on first sign-in
        // Don't overwrite if we already have them
        if let email = email {
            keychain.appleUserEmail = email
        }
        if let name = formattedName, !name.isEmpty {
            keychain.appleUserName = name
        }

        // Update published state
        currentUser = User(
            id: userIdentifier,
            email: keychain.appleUserEmail,
            fullName: keychain.appleUserName
        )
        isSignedIn = true
        authError = nil
    }

    private func handleAuthorizationError(_ error: Error) {
        let authError = error as? ASAuthorizationError

        switch authError?.code {
        case .canceled:
            self.authError = nil // Don't show error for user cancellation

        case .invalidResponse:
            self.authError = "Invalid response from Apple. Please try again."

        case .notHandled:
            self.authError = "Sign-In request was not handled. Please try again."

        case .failed:
            self.authError = "Sign-In failed. Please check your internet connection and try again."

        case .notInteractive:
            self.authError = "Please enable Apple Sign-In in your device settings."

        case .unknown:
            self.authError = "An unknown error occurred. Please try again."

        default:
            self.authError = error.localizedDescription
        }
    }

    // MARK: - Sign Out

    /// Sign out the current user
    func signOut() {
        // Clear Keychain credentials
        keychain.clearAppleCredentials()

        // Clear local state
        currentUser = nil
        isSignedIn = false
        authError = nil
    }
}

// MARK: - Preview Support

#if DEBUG
extension AuthenticationService {
    static var preview: AuthenticationService {
        let service = AuthenticationService()
        service.isSignedIn = true
        service.currentUser = User.preview
        return service
    }

    static var signedOut: AuthenticationService {
        let service = AuthenticationService()
        service.isSignedIn = false
        return service
    }
}
#endif


Now let me check the FavoritesService and examine the app structure:


find /Users/neog/Apps/iOS/FoodFinder-iOS -type f -name "*.swift" | wc -l

Count total Swift files in FoodFinder