/// Common tailwind colors used.
///
/// Use these with string interpolation in the class.
///
/// **Example:**
///
/// ```swift
/// div(.class("\(text: .yellow) \(border: .gray) \(bg: .blue)")) {
///   ...
/// }
/// ```
public enum Color {

  public enum BackgroundColor: Sendable {
    case blue
    case darkBlue
    case darkGray
    case darkSlate
    case slate
    case yellow

    var color: String {
      switch self {
      case .blue: return "bg-blue-500"
      case .darkBlue: return "bg-blue-600"
      case .darkGray: return "bg-gray-700"
      case .darkSlate: return "bg-slate-700"
      case .slate: return "bg-slate-300"
      case .yellow: return "bg-yellow-300"
      }
    }
  }

  public enum BorderColor: Sendable {
    case blue
    case darkGray
    case darkYellow
    case gray
    case yellow

    var color: String {
      switch self {
      case .blue: return "border-blue-500"
      case .darkGray: return "border-gray-400"
      case .darkYellow: return "border-yellow-800"
      case .gray: return "border-gray-300"
      case .yellow: return "border-yellow-300"
      }
    }
  }

  public enum TextColor: Sendable {
    case blue
    case darkBlue
    case darkGray
    case gray
    case green
    case yellow
    case white

    var color: String {
      switch self {
      case .blue: return "text-blue-500"
      case .darkBlue: return "text-blue-600"
      case .darkGray: return "text-gray-700"
      case .gray: return "text-gray-300"
      case .green: return "text-green-600"
      case .yellow: return "text-yellow-300"
      case .white: return "text-white"
      }
    }
  }

}

public extension String.StringInterpolation {

  mutating func appendInterpolation(bg background: Color.BackgroundColor) {
    appendInterpolation(background.color)
  }

  mutating func appendInterpolation(border: Color.BorderColor) {
    appendInterpolation(border.color)
  }

  mutating func appendInterpolation(text: Color.TextColor) {
    appendInterpolation(text.color)
  }
}