//
//  Picker.swift
//  MacBackend
//
//  Created by david-swift on 08.12.2024.
//

import SwiftUI

/// A picker view.
public struct Picker<Item>: SwiftUIWidget where Item: Hashable, Item: CustomStringConvertible {

    /// The selected item.
    @Meta.Binding var selection: Item
    /// The picker's label.
    var label: String
    /// The picker's items.
    var items: [Item]
    /// Whether to use the segmented picker stlye.
    var segmented = false

    /// Initialize the picker.
    /// - Parameters:
    ///   - label: The picker's label.
    ///   - items: The picker's items.
    ///   - selection: The selected item.
    public init(_ label: String, items: [Item], selection: Meta.Binding<Item>) {
        self._selection = selection
        self.label = label
        self.items = items
    }

    /// Get the SwiftUI view.
    /// - Parameter properties: The widget data.
    /// - Returns: The SwiftUI view.
    public static func view(properties: Picker<Item>) -> some SwiftUI.View {
        let picker = SwiftUI.Picker(properties.label, selection: properties._selection.swiftUI) {
            SwiftUI.ForEach(properties.items, id: \.hashValue) { item in
                SwiftUI.Text(item.description)
                    .tag(item.description)
            }
        }
        if properties.segmented {
            picker
                .pickerStyle(.segmented)
        } else {
            picker
                .pickerStyle(.automatic)
        }
    }

    /// Make the picker segmented.
    /// - Parameter segmented: Whether the picker is segmented.
    /// - Returns: The picker.
    public func segmented(_ segmented: Bool = true) -> Self {
        modify { $0.segmented = segmented }
    }

}