import Foundation
import CoreData
import DifferenceKit

public struct Vehicle: Decodable {
    
    public let number: String
    public let currentNumber: String?
    public let brand: VBrand?
    public let addedDate: TimeInterval
    public let updatedDate: TimeInterval
}

extension CDVehicle: Dated {

    public var updatedAt: Date {
        Date(timeIntervalSince1970: updatedDate)
    }

    public var addedAt: Date {
        Date(timeIntervalSince1970: addedDate)
    }
}

extension CDVehicle: Differentiable {
    
    public var differenceIdentifier: String { number! }
    
    public func isContentEqual(to source: CDVehicle) -> Bool {
        return  number == source.number &&
                addedDate == source.addedDate &&
                updatedDate == source.updatedDate
    }
}

extension CDVehicle {
    
    convenience init(vehicle: Vehicle, context: NSManagedObjectContext) {
        
        self.init(context: context)
        self.number = vehicle.number
        self.currentNumber = vehicle.currentNumber
        self.addedDate = vehicle.addedDate/1000
        self.updatedDate = vehicle.updatedDate/1000
        
        if let vbrand = vehicle.brand {
            self.brand = CDVBrand(vbrand: vbrand, context: context)
        }
    }
    
    public var unrecognized: Bool {
        return self.brand == nil
    }
    
    public var outdated: Bool {
        if let current = self.currentNumber {
            return current != self.number
        } else {
            return false
        }
    }
    
}