e-party-iOS/yana/MVVM/ViewModel/MainViewModel.swift

import SwiftUI

// MARK: - Main ViewModel

@MainActor
class MainViewModel: ObservableObject {
    // MARK: - Published Properties
    @Published var selectedTab: Tab = .feed
    @Published var isLoggedOut: Bool = false
    @Published var navigationPath = NavigationPath()
    
    // MARK: - Callbacks
    var onLogout: (() -> Void)?
    var onAddButtonTapped: (() -> Void)?
    
    // MARK: - Enums
    enum Tab: String, CaseIterable {
        case feed = "feed"
        case me = "me"
        
        var title: String {
            switch self {
            case .feed:
                return "Feed"
            case .me:
                return "Me"
            }
        }
        
        var iconName: String {
            switch self {
            case .feed:
                return "list.bullet"
            case .me:
                return "person.circle"
            }
        }
    }
    
    // MARK: - Public Methods
    func onAppear() {
        debugInfoSync("🚀 MainView onAppear")
        debugInfoSync("   当前selectedTab: \(selectedTab)")
    }
    
    func onTabChanged(_ newTab: Tab) {
        selectedTab = newTab
        debugInfoSync("🔄 MainView selectedTab changed: \(newTab)")
    }
    
    func onLogoutTapped() {
        isLoggedOut = true
        onLogout?()
    }
    
    func onTopRightButtonTapped() {
        switch selectedTab {
        case .feed:
            onAddButtonTapped?()
        case .me:
            navigationPath.append("setting")
        }
    }
}