NetNewsWire/Frameworks/Data/Feed.swift

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//
// Feed.swift
// DataModel
//
// Created by Brent Simmons on 7/1/17.
// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
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import RSWeb
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public final class Feed: DisplayNameProvider, UnreadCountProvider, Hashable {
public let accountID: String
public let url: String
public let feedID: String
public var homePageURL: String?
public var name: String?
public var editedName: String?
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public var conditionalGetInfo: HTTPConditionalGetInfo?
public var contentHash: String?
public let hashValue: Int
// MARK: - DisplayNameProvider
public var nameForDisplay: String {
get {
return (editedName ?? name) ?? NSLocalizedString("Untitled", comment: "Feed name")
}
}
// MARK: - UnreadCountProvider
public var unreadCount = 0 {
didSet {
if unreadCount != oldValue {
postUnreadCountDidChangeNotification()
}
}
}
// MARK: - Init
public init(accountID: String, url: String, feedID: String) {
self.accountID = accountID
self.url = url
self.feedID = feedID
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self.hashValue = feedID.hashValue
}
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// MARK: - Disk Dictionary
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private struct Key {
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static let url = "url"
static let feedID = "feedID"
static let homePageURL = "homePageURL"
static let name = "name"
static let editedName = "editedName"
static let conditionalGetInfo = "conditionalGetInfo"
static let contentHash = "contentHash"
static let unreadCount = "unreadCount"
}
convenience public init?(accountID: String, dictionary: [String: Any]) {
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guard let url = dictionary[Key.url] as? String else {
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return nil
}
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let feedID = dictionary[Key.feedID] as? String ?? url
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self.init(accountID: accountID, url: url, feedID: feedID)
self.homePageURL = dictionary[Key.homePageURL] as? String
self.name = dictionary[Key.name] as? String
self.editedName = dictionary[Key.editedName] as? String
self.contentHash = dictionary[Key.contentHash] as? String
if let conditionalGetInfoDictionary = dictionary[Key.conditionalGetInfo] as? [String: String] {
self.conditionalGetInfo = HTTPConditionalGetInfo(dictionary: conditionalGetInfoDictionary)
}
if let savedUnreadCount = dictionary[Key.unreadCount] as? Int {
self.unreadCount = savedUnreadCount
}
}
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public static func isFeedDictionary(_ d: [String: Any]) -> Bool {
return d[Key.url] != nil
}
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public var dictionary: [String: Any] {
get {
var d = [String: Any]()
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d[Key.url] = url
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// feedID is not repeated when its the same as url
if (feedID != url) {
d[Key.feedID] = feedID
}
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if let homePageURL = homePageURL {
d[Key.homePageURL] = homePageURL
}
if let name = name {
d[Key.name] = name
}
if let editedName = editedName {
d[Key.editedName] = editedName
}
if let contentHash = contentHash {
d[Key.contentHash] = contentHash
}
if unreadCount > 0 {
d[Key.unreadCount] = unreadCount
}
if let conditionalGetInfo = conditionalGetInfo {
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d[Key.conditionalGetInfo] = conditionalGetInfo.dictionary
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}
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return d
}
}
public class func ==(lhs: Feed, rhs: Feed) -> Bool {
return lhs === rhs
}
}
// MARK: - OPMLRepresentable
extension Feed: OPMLRepresentable {
public func OPMLString(indentLevel: Int) -> String {
let escapedName = nameForDisplay.rs_stringByEscapingSpecialXMLCharacters()
var escapedHomePageURL = ""
if let homePageURL = homePageURL {
escapedHomePageURL = homePageURL.rs_stringByEscapingSpecialXMLCharacters()
}
let escapedFeedURL = url.rs_stringByEscapingSpecialXMLCharacters()
var s = "<outline text=\"\(escapedName)\" title=\"\(escapedName)\" description=\"\" type=\"rss\" version=\"RSS\" htmlUrl=\"\(escapedHomePageURL)\" xmlUrl=\"\(escapedFeedURL)\"/>\n"
s = s.rs_string(byPrependingNumberOfTabs: indentLevel)
return s
}
}