//
//  Typography+Spacing.swift
//  VDS
//
//  Created by Matt Bruce on 7/21/23.
//

import Foundation
import UIKit

extension TextStyle {
    public struct SpacingConfig {
        public var defaultSpacing: CGFloat = 8.0
        public var configs: [TextStyle.DeviceSpacingConfig]
        
        public func spacing(for style: TextStyle, neighboring: TextStyle) -> CGFloat {
            let deviceType: TextStyle.DeviceSpacingConfig.DeviceType = UIDevice.isIPad ? .iPad : .iPhone
            if let config = configs.first(where:
                                            { style.isWithin($0.primaryStyles) && neighboring.isWithin($0.neighboringStyles) &&
                ($0.deviceType ==  deviceType || $0.deviceType == .all )})
            {
                return config.spacing
            }
            return defaultSpacing
        }
    }
    
    public struct DeviceSpacingConfig {
        /// Enum used to describe the type of device for this configuration.
        public enum DeviceType {
            case iPhone, iPad, all
        }
        public var spacing: CGFloat
        public var deviceType: DeviceType = .iPhone
        public var primaryStyles: [TextStyle]
        public var neighboringStyles: [TextStyle]
        
        public init(_ primaryStyles: [TextStyle], neighboring: [TextStyle], spacing: CGFloat, deviceType: DeviceType = .iPhone) {
            self.spacing = spacing
            self.primaryStyles = primaryStyles
            self.neighboringStyles = neighboring
            self.deviceType = deviceType
        }
    }
}