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////
//// RSSInJSONParser.swift
//// RSParser
////
//// Created by Brent Simmons on 6/24/17.
//// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
////
//
//import Foundation
//import SAX
//
//// See https://github.com/scripting/Scripting-News/blob/master/rss-in-json/README.md
//// Also: http://cyber.harvard.edu/rss/rss.html
//
//public struct RSSInJSONParser {
//
// public static func parse(_ parserData: ParserData) throws -> ParsedFeed? {
//
// do {
// guard let parsedObject = try JSONSerialization.jsonObject(with: parserData.data) as? JSONDictionary else {
// throw FeedParserError(.invalidJSON)
// }
// guard let rssObject = parsedObject["rss"] as? JSONDictionary else {
// throw FeedParserError(.rssChannelNotFound)
// }
// guard let channelObject = rssObject["channel"] as? JSONDictionary else {
// throw FeedParserError(.rssChannelNotFound)
// }
//
// // Id bet money that in practice the items array wont always appear correctly inside the channel object.
// // Id also bet that sometimes it gets called "items" instead of "item".
// var itemsObject = channelObject["item"] as? JSONArray
// if itemsObject == nil {
// itemsObject = parsedObject["item"] as? JSONArray
// }
// if itemsObject == nil {
// itemsObject = channelObject["items"] as? JSONArray
// }
// if itemsObject == nil {
// itemsObject = parsedObject["items"] as? JSONArray
// }
// if itemsObject == nil {
// throw FeedParserError(.rssItemsNotFound)
// }
//
// let title = channelObject["title"] as? String
// let homePageURL = channelObject["link"] as? String
// let feedURL = parserData.url
// let feedDescription = channelObject["description"] as? String
// let feedLanguage = channelObject["language"] as? String
//
// let items = parseItems(itemsObject!, parserData.url)
//
// return ParsedFeed(type: .rssInJSON, title: title, homePageURL: homePageURL, feedURL: feedURL, language: feedLanguage, feedDescription: feedDescription, nextURL: nil, iconURL: nil, faviconURL: nil, authors: nil, expired: false, hubs: nil, items: items)
//
// }
// catch { throw error }
// }
//}
//
//private extension RSSInJSONParser {
//
// static func parseItems(_ itemsObject: JSONArray, _ feedURL: String) -> Set<ParsedItem> {
//
// return Set(itemsObject.compactMap{ (oneItemDictionary) -> ParsedItem? in
//
// return parsedItemWithDictionary(oneItemDictionary, feedURL)
// })
// }
//
// static func parsedItemWithDictionary(_ itemDictionary: JSONDictionary, _ feedURL: String) -> ParsedItem? {
//
// let externalURL = itemDictionary["link"] as? String
// let title = itemDictionary["title"] as? String
//
// var contentHTML = itemDictionary["description"] as? String
// var contentText: String? = nil
// if contentHTML != nil && !(contentHTML!.contains("<")) {
// contentText = contentHTML
// contentHTML = nil
// }
// if contentHTML == nil && contentText == nil && title == nil {
// return nil
// }
//
// var datePublished: Date? = nil
// if let datePublishedString = itemDictionary["pubDate"] as? String {
// datePublished = RSDateWithString(datePublishedString)
// }
//
// let authors = parseAuthors(itemDictionary)
// let tags = parseTags(itemDictionary)
// let attachments = parseAttachments(itemDictionary)
//
// var uniqueID: String? = itemDictionary["guid"] as? String
// if uniqueID == nil {
//
// // Calculate a uniqueID based on a combination of non-empty elements. Then hash the result.
// // Items should have guids. When they don't, re-runs are very likely
// // because there's no other 100% reliable way to determine identity.
// // This calculated uniqueID is valid only for this particular feed. (Just like ids in JSON Feed.)
//
// var s = ""
// if let datePublished = datePublished {
// s += "\(datePublished.timeIntervalSince1970)"
// }
// if let title = title {
// s += title
// }
// if let externalURL = externalURL {
// s += externalURL
// }
// if let authorEmailAddress = authors?.first?.emailAddress {
// s += authorEmailAddress
// }
// if let oneAttachmentURL = attachments?.first?.url {
// s += oneAttachmentURL
// }
// if s.isEmpty {
// // Sheesh. Tough case.
// if let _ = contentHTML {
// s = contentHTML!
// }
// if let _ = contentText {
// s = contentText!
// }
// }
// uniqueID = (s as NSString).rsparser_md5Hash()
// }
//
// if let uniqueID = uniqueID {
// return ParsedItem(syncServiceID: nil, uniqueID: uniqueID, feedURL: feedURL, url: nil, externalURL: externalURL, title: title, language: nil, contentHTML: contentHTML, contentText: contentText, summary: nil, imageURL: nil, bannerImageURL: nil, datePublished: datePublished, dateModified: nil, authors: authors, tags: tags, attachments: attachments)
// }
// return nil
// }
//
// static func parseAuthors(_ itemDictionary: JSONDictionary) -> Set<ParsedAuthor>? {
//
// guard let authorEmailAddress = itemDictionary["author"] as? String else {
// return nil
// }
// let parsedAuthor = ParsedAuthor(name: nil, url: nil, avatarURL: nil, emailAddress: authorEmailAddress)
// return Set([parsedAuthor])
// }
//
// static func parseTags(_ itemDictionary: JSONDictionary) -> Set<String>? {
//
// if let categoryObject = itemDictionary["category"] as? JSONDictionary {
// if let oneTag = categoryObject["#value"] as? String {
// return Set([oneTag])
// }
// return nil
// }
// else if let categoryArray = itemDictionary["category"] as? JSONArray {
// return Set(categoryArray.compactMap{ $0["#value"] as? String })
// }
// return nil
// }
//
// static func parseAttachments(_ itemDictionary: JSONDictionary) -> Set<ParsedAttachment>? {
//
// guard let enclosureObject = itemDictionary["enclosure"] as? JSONDictionary else {
// return nil
// }
// guard let attachmentURL = enclosureObject["url"] as? String else {
// return nil
// }
//
// var attachmentSize = enclosureObject["length"] as? Int
// if attachmentSize == nil {
// if let attachmentSizeString = enclosureObject["length"] as? String {
// attachmentSize = (attachmentSizeString as NSString).integerValue
// }
// }
//
// let type = enclosureObject["type"] as? String
// if let attachment = ParsedAttachment(url: attachmentURL, mimeType: type, title: nil, sizeInBytes: attachmentSize, durationInSeconds: nil) {
// return Set([attachment])
// }
// return nil
// }
//}