// Copyright © 2025 VOID Software SA. All rights reserved.

import SwiftUI
import Swinject
import Combine

class AppStateManager: ObservableObject {

    @Published var currentAppState: AppState?
    @Published var path = NavigationPath()

    static let isProduction = false

    private var internalStack: [AppState] = []
    var currentBottomMenuPosition: Int = 0

    func navigateTo(state: AppState) {

        DispatchQueue.main.async {

            // If the requested state is already the current one, do nothing
            if let currentState = self.currentAppState, currentState == state {
                return
            }

            self.internalStack.append(state)

            self.path.append(state)
            self.currentAppState = state

        }
    }

    func navigateBack() {

        DispatchQueue.main.async {
            guard !self.path.isEmpty else { return }

            if self.path.count <= 1 {
                return
            }

            self.path.removeLast()
            _ = self.internalStack.popLast()

            if self.internalStack.isEmpty {
                self.currentAppState = self.internalStack.last
            } else {
                self.currentAppState = nil
            }

        }
    }

    func resetNavigation() {

        DispatchQueue.main.async {
            self.path = NavigationPath()
            self.internalStack.removeAll()
            self.currentAppState = nil
        }
    }

}