NetNewsWire/Frameworks/Data/Attachment.swift

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//
// Attachment.swift
// DataModel
//
// Created by Brent Simmons on 7/1/17.
// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
//
import Foundation
public struct Attachment: Hashable {
public let attachmentID: String // Calculated
public let url: String
public let mimeType: String?
public let title: String?
public let sizeInBytes: Int?
public let durationInSeconds: Int?
public let hashValue: Int
public init(attachmentID: String?, url: String, mimeType: String?, title: String?, sizeInBytes: Int?, durationInSeconds: Int?) {
self.url = url
self.mimeType = mimeType
self.title = title
if let sizeInBytes = sizeInBytes, sizeInBytes > 0 {
self.sizeInBytes = sizeInBytes
}
else {
self.sizeInBytes = nil
}
if let durationInSeconds = durationInSeconds, durationInSeconds > 0 {
self.durationInSeconds = durationInSeconds
}
else {
self.durationInSeconds = nil
}
var s = url
s += mimeType ?? ""
s += title ?? ""
if let sizeInBytes = sizeInBytes {
s += "\(sizeInBytes)"
}
if let durationInSeconds = durationInSeconds {
s += "\(durationInSeconds)"
}
self.hashValue = s.hashValue
if let attachmentID = attachmentID {
self.attachmentID = attachmentID
}
else {
self.attachmentID = databaseIDWithString(s)
}
}
public static func ==(lhs: Attachment, rhs: Attachment) -> Bool {
return lhs.hashValue == rhs.hashValue && lhs.attachmentID == rhs.attachmentID
}
}