//
//  List.swift
//  MacBackend
//
//  Created by david-swift on 23.11.2024.
//

import SwiftUI

/// A list widget.
public struct List<Element>: SwiftUIWidget where Element: Identifiable {

    /// The elements.
    var elements: [Element]
    /// The selected element.
    var selection: Meta.Binding<Element.ID?>
    /// The content for an element.
    var content: (Element) -> Body

    /// The wrapped views.
    public var wrappedViews: [String: any Meta.AnyView] {
        elements.reduce(into: [:]) { partialResult, element in
            partialResult["\(element.id)"] = content(element)
        }
    }

    /// Initialize a list widget.
    /// - Parameters:
    ///   - elements: The elements.
    ///   - selection: The selected element.
    ///   - content: The content for an element.
    public init(
        _ elements: [Element],
        selection: Meta.Binding<Element.ID?>,
        @Meta.ViewBuilder content: @escaping (Element) -> Body
    ) {
        self.elements = elements
        self.content = content
        self.selection = selection
    }

    /// Get the SwiftUI view.
    /// - Parameter properties: The widget data.
    /// - Returns: The SwiftUI view.
    public static func view(properties: Self) -> some SwiftUI.View {
        SwiftUI.List(properties.elements, selection: properties.selection.swiftUI) { element in
            MacBackendView("\(element.id)")
        }
    }

}