//
//  VDSFontStyles.swift
//  VDS
//
//  Created by Matt Bruce on 7/27/22.
//

import Foundation
import UIKit
import VDSTypographyTokens

public struct VDSFontStyles {
    
    public enum Feature {
        
        private enum AvailableSize{
            case xlarge, large, medium, small, xsmall
        }
        
        private static func getFont(vdsFont: VDSFonts, size: AvailableSize) -> UIFont {
            switch size {
            case .xlarge:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeFeature144 : VDSTypography.fontSizeFeature96)
            case .large:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeFeature128 : VDSTypography.fontSizeFeature80)
            case .medium:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeFeature96 : VDSTypography.fontSizeFeature64)
            case .small:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeFeature80 : VDSTypography.fontSizeFeature48)
            case .xsmall:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeFeature64 : VDSTypography.fontSizeFeature40)
            }
        }
        
        public enum Bold {
            public static let xlarge = getFont(vdsFont: VDSFonts.dsBold, size: .xlarge)
            public static let large = getFont(vdsFont: VDSFonts.dsBold, size: .large)
            public static let medium = getFont(vdsFont: VDSFonts.dsBold, size: .medium)
            public static let small = getFont(vdsFont: VDSFonts.dsBold, size: .small)
            public static let xsmall = getFont(vdsFont: VDSFonts.dsBold, size: .xsmall)
        }
        
        public enum Regular {
            public static let xlarge = getFont(vdsFont: VDSFonts.dsRegular, size: .xlarge)
            public static let large = getFont(vdsFont: VDSFonts.dsRegular, size: .large)
            public static let medium = getFont(vdsFont: VDSFonts.dsRegular, size: .medium)
            public static let small = getFont(vdsFont: VDSFonts.dsRegular, size: .small)
            public static let xsmall = getFont(vdsFont: VDSFonts.dsRegular, size: .xsmall)
        }
    }
    
    public enum Title {
        
        private enum AvailableSize{
            case xxlarge, xlarge, large, medium, small
        }
        
        private static func getFont(vdsFont: VDSFonts, size: AvailableSize) -> UIFont {
            switch size {
            case .xxlarge:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeTitle64 : VDSTypography.fontSizeTitle40)
            case .xlarge:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeTitle48 : VDSTypography.fontSizeTitle32)
            case .large:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeTitle32 : VDSTypography.fontSizeTitle24)
            case .medium:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeTitle24 : VDSTypography.fontSizeTitle20)
            case .small:
                return vdsFont.font(ofSize: UIDevice.isIPad ? VDSTypography.fontSizeTitle20 : VDSTypography.fontSizeTitle16)
            }
        }
        
        public enum Bold {
            public static let xxlarge = getFont(vdsFont: VDSFonts.dsBold, size: .xxlarge)
            public static let xlarge = getFont(vdsFont: VDSFonts.dsBold, size: .xlarge)
            public static let large = getFont(vdsFont: VDSFonts.dsBold, size: .large)
            public static let medium = getFont(vdsFont: VDSFonts.dsBold, size: .medium)
            public static let small = getFont(vdsFont: VDSFonts.dsBold, size: .small)
        }
        
        public enum Regular {
            public static let xxlarge = getFont(vdsFont: VDSFonts.dsBold, size: .xxlarge)
            public static let xlarge = getFont(vdsFont: VDSFonts.dsRegular, size: .xlarge)
            public static let large = getFont(vdsFont: VDSFonts.dsRegular, size: .large)
            public static let medium = getFont(vdsFont: VDSFonts.dsRegular, size: .medium)
            public static let small = getFont(vdsFont: VDSFonts.dsRegular, size: .small)
        }
            
    }
    
    public enum Body {
        
        private enum AvailableSize{
            case large, medium, small
        }
        
        private static func getFont(vdsFont: VDSFonts, size: AvailableSize) -> UIFont {
            switch size {
            case .large:
                return vdsFont.font(ofSize: VDSTypography.fontSizeBody16)
            case .medium:
                return vdsFont.font(ofSize: VDSTypography.fontSizeBody14)
            case .small:
                return vdsFont.font(ofSize: VDSTypography.fontSizeBody12)
            }
        }
        
        public enum Bold {
            public static let large = getFont(vdsFont: VDSFonts.dsBold, size: .large)
            public static let medium = getFont(vdsFont: VDSFonts.dsBold, size: .medium)
            public static let small = getFont(vdsFont: VDSFonts.dsBold, size: .small)
        }
        
        public enum Regular {
            public static let large = getFont(vdsFont: VDSFonts.dsRegular, size: .large)
            public static let medium = getFont(vdsFont: VDSFonts.dsRegular, size: .medium)
            public static let small = getFont(vdsFont: VDSFonts.dsRegular, size: .small)
        }
    }
    
    public enum Micro: MicroTypographyProtocol {
        private static func getFont(vdsFont: VDSFonts) -> UIFont {
            return vdsFont.font(ofSize: VDSTypography.fontSizeMicro11)
        }
        
        public static var bold: UIFont {
            return getFont(vdsFont: .txBold)
        }
        
        public static var regular: UIFont {
            return getFont(vdsFont: .txRegular)
        }
    }
}

extension UIDevice {
    static var isIPad: Bool {
        UIDevice.current.userInterfaceIdiom == .pad
    }
}