//
//  View+Extensions.swift
//  lichunWebsocket
//
//  Useful SwiftUI View extensions
//

import SwiftUI

extension View {
    /// Conditionally applies a modifier to a view
    @ViewBuilder
    func `if`<Transform: View>(_ condition: Bool, transform: (Self) -> Transform) -> some View {
        if condition {
            transform(self)
        } else {
            self
        }
    }

    /// Conditionally applies one of two transforms
    @ViewBuilder
    func `if`<TrueContent: View, FalseContent: View>(
        _ condition: Bool,
        then trueTransform: (Self) -> TrueContent,
        else falseTransform: (Self) -> FalseContent
    ) -> some View {
        if condition {
            trueTransform(self)
        } else {
            falseTransform(self)
        }
    }

    /// Applies a corner radius to specific corners
    func cornerRadius(_ radius: CGFloat, corners: UIRectCorner) -> some View {
        clipShape(RoundedCorner(radius: radius, corners: corners))
    }

    /// Hides the view conditionally
    @ViewBuilder
    func hidden(_ shouldHide: Bool) -> some View {
        if shouldHide {
            self.hidden()
        } else {
            self
        }
    }

    /// Applies the list background modifier for iOS 16+
    func listBackgroundHidden() -> some View {
        self.modifier(ListBackgroundModifier())
    }
}

// MARK: - View Modifiers

/// Modifier to hide list background on iOS 16+
struct ListBackgroundModifier: ViewModifier {
    @ViewBuilder
    func body(content: Content) -> some View {
        if #available(iOS 16.0, *) {
            content.scrollContentBackground(.hidden)
        } else {
            content
        }
    }
}

// MARK: - Rounded Corner Shape
struct RoundedCorner: Shape {
    var radius: CGFloat = .infinity
    var corners: UIRectCorner = .allCorners

    func path(in rect: CGRect) -> Path {
        let path = UIBezierPath(
            roundedRect: rect,
            byRoundingCorners: corners,
            cornerRadii: CGSize(width: radius, height: radius)
        )
        return Path(path.cgPath)
    }
}