import Foundation
import CoreData
import DifferenceKit

public struct Vehicle: Decodable {
    
    public let number: String
    public let currentNumber: String?
    public let brand: VBrand?
    public let model: VModel?
    public let addedDate: TimeInterval
    public let updatedDate: TimeInterval
    public let color: String?
    public let year: Int64?
    public let category: String?
    public let vin1: String?
    public let vin2: String?
    public let sts: String?
    public let pts: String?
    public let isRightWheel: Bool?
    public let isJapanese: Bool?
    public let addedBy: String?
    public let engine: VEngine?
    public let photos: [VPhoto]?
    public let ownershipPeriods: [VOwnershipPeriod]?
    public let events: [VEvent]?
    public let osagoContracts: [VOsago]?
    public let ads: [VAd]?
    public let notes: [VNote]?
    public let debugInfo: DebugInfo?
}

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
        self.color = vehicle.color
        self.brand = CDVBrand(vbrand: vehicle.brand, context: context)
        self.model = CDVModel(model: vehicle.model, context: context)
        self.year = vehicle.year ?? 0
        self.category = category
        self.vin1 = vehicle.vin1
        self.vin2 = vehicle.vin2
        self.sts = vehicle.sts
        self.pts = vehicle.pts
        self.isRightWheel = vehicle.isRightWheel ?? false
        self.isJapanese = vehicle.isJapanese ?? false
        self.addedBy = vehicle.addedBy
        self.synchronized = true
        self.engine = CDVEngine(model: vehicle.engine, context: context)
        
        let photos = vehicle.photos?.map { CDVPhoto(model: $0, context: context) } ?? []
        self.photos = NSSet(array: photos)
        
        let ownershipPeriods = vehicle.ownershipPeriods?.map { CDVOwnershipPeriod(model: $0, context: context) } ?? []
        self.ownershipPeriods = NSSet(array: ownershipPeriods)
        
        let events = vehicle.events?.map { CDVEvent(model: $0, context: context) } ?? []
        self.events = NSSet(array: events)
        
        let osagoContracts = vehicle.osagoContracts?.map { CDVOsago(model: $0, context: context) } ?? []
        self.osagoContracts = NSSet(array: osagoContracts)
        
        let ads = vehicle.ads?.map { CDVAd(model: $0, context: context) } ?? []
        self.ads = NSSet(array: ads)
        
        let notes = vehicle.notes?.map { CDVNote(model: $0, context: context) } ?? []
        self.notes = NSSet(array: notes)
        
        self.debugInfo = CDDebugInfo(model: vehicle.debugInfo, 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
        }
    }
    
}