import Foundation

enum PageState: String {
    /**
     Generate the page, and show it in overviews of the parent.
     */
    case standard

    /**
     Generate the page, but don't provide links in overviews.
     */
    case draft

    /**
     Generate the page, but don't include it in overviews of the parent.
     */
    case hidden

    /**
     Completely ignore the element.
     */
    case ignored
}

extension PageState {

    var isShownInOverview: Bool {
        switch self {
        case .standard, .draft:
            return true
        case .hidden, .ignored:
            return false
        }
    }

    var hasThumbnailLink: Bool {
        switch self {
        case .standard:
            return true
        case .draft, .hidden, .ignored:
            return false
        }
    }
}

extension PageState: StringProperty {

    init?(_ value: String) {
        self.init(rawValue: value)
    }

    static var castFailureReason: String {
        "Page state must be 'standard', 'draft', 'hidden', or 'ignored'"
    }
}

extension PageState: DefaultValueProvider {

    static var defaultValue: PageState { .standard }
}