//
// NNW3Document.swift
// NetNewsWire
//
// Created by Maurice Parker on 10/14/19.
// Copyright © 2019 Ranchero Software. All rights reserved.
//
import Foundation
import RSCore
struct NNW3Document {
private let children: [OPMLRepresentable]?
private init(plist: [[String: AnyObject]]) {
self.children = NNW3Folder.itemsWithPlist(plist: plist)
}
init?(subscriptionsPlistURL url: URL) {
guard let data = try? Data(contentsOf: url) else {
return nil
}
guard let plist = try? PropertyListSerialization.propertyList(from: data, options: [], format: nil) as? [[String: AnyObject]] else {
return nil
}
self.init(plist: plist)
}
}
// MARK: OPMLRepresentable
extension NNW3Document: OPMLRepresentable {
func OPMLString(indentLevel: Int, allowCustomAttributes: Bool) -> String {
var s =
"""
NetNewsWire 3 Subscriptions
"""
if let children = children {
for child in children {
s += child.OPMLString(indentLevel: indentLevel + 1)
}
}
s +=
"""
"""
return s
}
}
// MARK: - NNW3Folder
private struct NNW3Folder {
private let title: String?
private let children: [OPMLRepresentable]?
init(plist: [String: Any]) {
self.title = plist["name"] as? String
guard let childrenArray = plist["childrenArray"] as? [[String: Any]] else {
self.children = nil
return
}
self.children = NNW3Folder.itemsWithPlist(plist: childrenArray)
}
static func itemsWithPlist(plist: [[String: Any]]) -> [OPMLRepresentable]? {
// Also used by NNW3Document.
var items = [OPMLRepresentable]()
for child in plist {
if child["isContainer"] as? Bool ?? false {
items.append(NNW3Folder(plist: child))
} else {
items.append(NNW3Feed(plist: child))
}
}
return items.isEmpty ? nil : items
}
}
// MARK: OPMLRepresentable
extension NNW3Folder: OPMLRepresentable {
func OPMLString(indentLevel: Int, allowCustomAttributes: Bool) -> String {
let t = title?.rs_stringByEscapingSpecialXMLCharacters() ?? ""
guard let children = children else {
// Empty folder.
return "\n".rs_string(byPrependingNumberOfTabs: indentLevel)
}
var s = "\n".rs_string(byPrependingNumberOfTabs: indentLevel)
for child in children {
s += child.OPMLString(indentLevel: indentLevel + 1)
}
s += "\n".rs_string(byPrependingNumberOfTabs: indentLevel)
return s
}
}
// MARK: - NNW3Feed
private struct NNW3Feed {
private let title: String?
private let homePageURL: String?
private let feedURL: String?
init(plist: [String: Any]) {
self.title = plist["name"] as? String
self.homePageURL = plist["home"] as? String
self.feedURL = plist["rss"] as? String
}
}
// MARK: OPMLRepresentable
extension NNW3Feed: OPMLRepresentable {
func OPMLString(indentLevel: Int, allowCustomAttributes: Bool) -> String {
let t = title?.rs_stringByEscapingSpecialXMLCharacters() ?? ""
let p = homePageURL?.rs_stringByEscapingSpecialXMLCharacters() ?? ""
let f = feedURL?.rs_stringByEscapingSpecialXMLCharacters() ?? ""
var s = "\n"
s = s.rs_string(byPrependingNumberOfTabs: indentLevel)
return s
}
}