//
//  VStack.swift
//  MacBackend
//
//  Created by david-swift on 23.08.23.
//

import SwiftUI

/// A `VStack` view.
public struct VStack: SwiftUIWidget, Wrapper {

    /// The content view.
    var content: Body

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

    /// Initialize the ``VStack``.
    /// - Parameter content: The content.
    public init(@Meta.ViewBuilder content: @escaping () -> Body) {
        self.content = content()
    }

    /// Get the SwiftUI view.
    /// - Parameter properties: The widget data.
    /// - Returns: The SwiftUI view.
    public static func view(properties: Self) -> some SwiftUI.View {
        SwiftUI.VStack {
            SwiftUI.ForEach(properties.content.indices, id: \.self) { index in
                MacBackendView("\(index)")
            }
        }
    }

    /// The view storage.
    /// - Parameters:
    ///     - data: Modify views before being updated.
    ///     - type: The view render data type.
    /// - Returns: The view storage.
    public func container<Data>(data: WidgetData, type: Data.Type) -> ViewStorage where Data: ViewRenderData {
        if content.count == 1, let storage = content.first?.storage(data: data, type: type) {
            return storage
        }
        return internalContainer(data: data, type: type)
    }

    /// Update the stored content.
    /// - Parameters:
    ///     - storage: The storage to update.
    ///     - data: Modify views before being updated
    ///     - updateProperties: Whether to update the view's properties.
    ///     - type: The view render data type.
    public func update<Data>(
        _ storage: ViewStorage,
        data: WidgetData,
        updateProperties: Bool,
        type: Data.Type
    ) where Data: ViewRenderData {
        if content.count == 1, let first = content.first {
            first.updateStorage(storage, data: data, updateProperties: updateProperties, type: type)
        } else {
            internalUpdate(storage, data: data, updateProperties: updateProperties, type: type)
        }
    }

}