import SwiftUI

/// A view modifier that resigns the first responder status when the view is tapped.
///
/// This modifier is useful for dismissing the keyboard or other input controls
/// when the user taps on an area of the view that doesn't have interactive content.
struct ResignFocusModifier: ViewModifier {

    // MARK: Body

    /// The content and behavior of the view modifier.
    ///
    /// Adds a tap gesture that sends the `resignFirstResponder` action
    /// to dismiss any active first responder (such as a text field).
    func body(content: Content) -> some View {
        content
            .onTapGesture {
                UIApplication.shared.sendAction(
                    #selector(UIResponder.resignFirstResponder),
                    to: nil,
                    from: nil,
                    for: nil
                )
            }
    }

}

// MARK: - View Extension

extension View {

    /// Adds a tap gesture that resigns the first responder when the view is tapped.
    ///
    /// This is useful for dismissing the keyboard or other input controls
    /// when the user taps outside of an interactive element.
    ///
    /// - Returns: A view that resigns first responder status on tap.
    func onResignFocus() -> some View {
        modifier(ResignFocusModifier())
    }

}