//
//  Label.swift
//  Freetime
//
//  Created by Ryan Nystrom on 6/2/17.
//  Copyright © 2017 Ryan Nystrom. All rights reserved.
//

import Foundation
import IGListKit

final class RepositoryLabel: ListDiffable, Hashable, Equatable, ListSwiftDiffable {

    let color: String
    let name: String

    init(color: String, name: String) {
        self.color = color
        self.name = name
    }

    // MARK: ListDiffable

    func diffIdentifier() -> NSObjectProtocol {
        return name as NSObjectProtocol
    }

    func isEqual(toDiffableObject object: ListDiffable?) -> Bool {
        if self === object { return true }
        guard let object = object as? RepositoryLabel else { return false }
        return color == object.color
    }

    // MARK: Hashable

    var hashValue: Int {
        return color.hashValue
            .combineHash(with: name.hashValue)
    }

    // MARK: Equatable

    static func ==(lhs: RepositoryLabel, rhs: RepositoryLabel) -> Bool {
        if lhs === rhs { return true }
        return lhs.color == rhs.color
        && lhs.name == rhs.name
    }

    // MARK: ListSwiftDiffable

    var identifier: String {
        return name
    }

    func isEqual(to object: ListSwiftDiffable) -> Bool {
        guard let object = object as? RepositoryLabel else { return false }
        return self == object
    }

}