//
//  LocalNetworkPermissionView.swift
//  QuickDrop
//
//  Created by Leon Böttger on 15.11.25.
//

import SwiftUI
import LUI

public struct LocalNetworkPermissionView: View {
    
    @State var requestedLocalNetworkAccess = false
    @Environment(\.scenePhase) var scenePhase
    
    public var body: some View {
        
        PermissionView(title: "introduction_local_network_access", watchSymbol: "", subtitle: "introduction_local_network_access_description".localized(with: "introduction_continue".localized()), permissionAction: {
            
            if requestedLocalNetworkAccess {
                // Something went wrong, user pressed again on continue. In this case, just continue with setup
                IntroductionViewController.sharedInstance.canProceed = true
            }
            else {
                // init manager to force local network access prompt
                requestedLocalNetworkAccess = true
                let manager = NearbyConnectionManager.shared
                manager.startDeviceDiscovery()
            }
        }, continueLabel: "introduction_continue", nextView: {
            #if !EXTENSION
            BluetoothPermissionView()
            #else
            IntroductionDoneView()
            #endif
        }, topView: {
            IntroductionIconView(icon: "wifi")
        })
        .onChange(of: scenePhase) { newValue in
            // alert was removed from screen, app is foreground again -> continue with intro
            if newValue == .active && requestedLocalNetworkAccess {
                IntroductionViewController.sharedInstance.canProceed = true
            }
        }
    }
}

#if !EXTENSION
private struct BluetoothPermissionView: View {

    @ObservedObject private var bluetoothPermission = BluetoothPermissionManager.shared
    @State private var requestedBluetoothAccess = false

    var body: some View {
        PermissionView(title: "BluetoothPermissionRequiredTitle",
                       watchSymbol: "",
                       subtitle: "BluetoothPermissionRequiredSubtitle",
                       permissionAction: requestBluetoothAccess,
                       continueLabel: "introduction_continue",
                       nextView: {
                           IntroductionDoneView()
                       },
                       topView: {
                           IntroductionIconView(icon: "antenna.radiowaves.left.and.right")
                       })
    }

    private func requestBluetoothAccess() {
        requestedBluetoothAccess = true
        bluetoothPermission.refresh()

        if bluetoothPermission.isAllowed {
            IntroductionViewController.sharedInstance.canProceed = true
            return
        }

        guard bluetoothPermission.canRequestPermission else {
            IntroductionViewController.sharedInstance.canProceed = true
            return
        }

        bluetoothPermission.requestPermission { _ in
            DispatchQueue.main.async {
                IntroductionViewController.sharedInstance.canProceed = true
            }
        }
    }
}
#endif


#Preview {
    NavigationView {
        LocalNetworkPermissionView()
    }
}