Sale.swift

import UIKit
import SwiftyJSON

@objcMembers final class Sale: NSObject, JSONAbleType {
    dynamic let id: String
    dynamic let isAuction: Bool
    dynamic let startDate: Date
    dynamic let endDate: Date?
    dynamic let name: String
    dynamic var artworkCount: Int
    dynamic let auctionState: String
    dynamic let bypassCreditCardRequirement: Bool

    dynamic var buyersPremium: BuyersPremium?

    init(id: String, name: String, isAuction: Bool, startDate: Date, endDate: Date?, artworkCount: Int, state: String, bypassCreditCardRequirement: Bool) {
        self.id = id
        self.name = name
        self.isAuction = isAuction
        self.startDate = startDate
        self.endDate = endDate
        self.artworkCount = artworkCount
        self.auctionState = state
        self.bypassCreditCardRequirement = bypassCreditCardRequirement
    }

    static func fromJSON(_ json:[String: Any]) -> Sale {
        let json = JSON(json)

        let id = json["id"].stringValue
        let isAuction = json["is_auction"].boolValue
        let startDate = KioskDateFormatter.fromString(json["start_at"].stringValue)!
        let endDate = KioskDateFormatter.fromString(json["end_at"].stringValue)
        let name = json["name"].stringValue
        let artworkCount = json["eligible_sale_artworks_count"].intValue
        let state = json["auction_state"].stringValue
        let bypassCreditCardRequirement = json["trusted_client_bypasses_card_requirement"].boolValue

        let sale = Sale(id: id, name: name, isAuction: isAuction, startDate: startDate, endDate: endDate, artworkCount: artworkCount, state: state, bypassCreditCardRequirement: bypassCreditCardRequirement)

        if let buyersPremiumDict = json["buyers_premium"].object as? [String: AnyObject] {
            sale.buyersPremium = BuyersPremium.fromJSON(buyersPremiumDict)
        }

        return sale
    }

    func isActive(_ systemTime:SystemTime) -> Bool {
        let now = systemTime.date()
        guard let endDate = endDate else {
            // Live sales don't have end dates, and the kiosk isn't compatible with live sales.
            // So we'll say any live sale is "not active"
            return false
        }
        return (now as NSDate).earlierDate(startDate) == startDate && (now as NSDate).laterDate(endDate) == endDate
    }
}