Implement iOS travel management app for Japan trips with SwiftUI

[Copilot]

Built a native iOS app for managing Japan travel itineraries with Japan-specific features.

Architecture

• SwiftUI views with MVVM pattern
• Local persistence via Codable JSON serialization
• ObservableObject state management with async/await

Data Models

• Trip: destination, dates, budget (JPY), places array
• Place: typed locations with Japanese category labels
• TripStore: CRUD operations with error logging via os.log

Views

• ContentView: Trip list with swipe-to-delete
• TripDetailView: Budget/duration display, places list, phrase reference
• AddTripView: Picker with 10 major Japan destinations (Tokyo, Kyoto, Osaka, etc.)
• AddPlaceView: 8 place types (寺 Temple, 神社 Shrine, レストラン Restaurant, etc.)
• JapanesePhrasesView: 10 common phrases with Kanji, romaji, and translations

Japan Customization

let japanDestinations = ["東京 Tokyo", "京都 Kyoto", "大阪 Osaka", ...]

enum PlaceType: String {
    case temple = "寺 Temple"
    case shrine = "神社 Shrine"
    case restaurant = "レストラン Restaurant"
    // ...
}

Text("¥\(Int(trip.budget))")  // JPY currency display

iOS 16.0+ target, 586 LOC Swift, standard Xcode project structure.

Original prompt

Simple iOS Traveling managing app that is accustomed for Japan trip.

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