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

import Foundation
import UIKit

/// Enum that is matched up for the Verizon fonts.
public enum Font: FontProtocol {
    case edsBold
    case edsRegular
    case dsLight
    case etxBold
    case etxRegular
    case custom(UIFont)
    
    public var fontName: String {
        switch self {
        case .edsBold:
            return "VerizonNHGeDS-Bold"
        case .edsRegular:
            return "VerizonNHGeDS-Regular"
        case .dsLight:
            return "VerizonNHGDS-Light"
        case .etxBold:
            return "VerizonNHGeTX-Bold"
        case .etxRegular:
            return "VerizonNHGeTX-Regular"
        case .custom(let font):
            return font.fontName
        }
    }
    
    public static var allCases: [Font] {
        [.edsBold, .edsRegular, .dsLight, .etxBold, .etxRegular]
    }
    
    /// File Extension for each of the Font enums.
    public var fontFileExtension: String {
        return "otf"
    }
    
    /// Returns a UIFont for the fontName and size given.
    /// - Parameters:
    ///   - size: Size of the font
    /// - Returns: UIFont for the fontName and Size.
    public func font(ofSize size: CGFloat) -> UIFont{
        DispatchQueue.once(block: { self.register() })
        switch self {
        case .custom(let font):
            return font
        default:
            guard let found = UIFont(name: self.fontName, size: size) else { return .systemFont(ofSize: size) }
            return found
        }
    }
}