Fetch articles for the Today smart feed.

Evergreen/SmartFeeds/TodayFeedDelegate.swift

@@ -23,8 +23,11 @@ struct TodayFeedDelegate: SmartFeedDelegate {
 
 	func fetchArticles() -> Set<Article> {
 
-		// TODO
-		return Set<Article>()
+		var articles = Set<Article>()
+		for account in AccountManager.shared.accounts {
+			articles.formUnion(account.fetchTodayArticles())
+		}
+		return articles
 	}
 
 	func fetchUnreadArticles() -> Set<Article> {

Frameworks/Account/Account.swift

@@ -359,6 +359,11 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 		return articles
 	}
 
+	public func fetchTodayArticles() -> Set<Article> {
+
+		return database.fetchTodayArticles(for: flattenedFeeds())
+	}
+
 	private func validateUnreadCount(_ feed: Feed, _ articles: Set<Article>) {
 
 		// articles must contain all the unread articles for the feed.

Frameworks/Database/ArticlesTable.swift

@@ -72,6 +72,11 @@ final class ArticlesTable: DatabaseTable {
 		return fetchUnreadArticles(feeds.feedIDs())
 	}
 
+	public func fetchTodayArticles(for feeds: Set<Feed>) -> Set<Article> {
+
+		return fetchTodayArticles(feeds.feedIDs())
+	}
+
 	// MARK: Updating
 	
 	func update(_ feed: Feed, _ parsedFeed: ParsedFeed, _ completion: @escaping UpdateArticlesWithFeedCompletionBlock) {
@@ -328,9 +333,15 @@ private extension ArticlesTable {
 		// * Must not be deleted.
 		// * Must be either 1) starred or 2) dateArrived must be newer than cutoff date.
 
-		let sql = withLimits ? "select * from articles natural join statuses where \(whereClause) and userDeleted=0 and (starred=1 or dateArrived>?);" : "select * from articles natural join statuses where \(whereClause);"
+		if withLimits {
+			let sql = "select * from articles natural join statuses where \(whereClause) and userDeleted=0 and (starred=1 or dateArrived>?);"
 			return articlesWithSQL(sql, parameters + [articleCutoffDate as AnyObject], database)
 		}
+		else {
+			let sql = "select * from articles natural join statuses where \(whereClause);"
+			return articlesWithSQL(sql, parameters, database)
+		}
+	}
 
 	func fetchUnreadCount(_ feedID: String, _ database: FMDatabase) -> Int {
 		
@@ -369,6 +380,31 @@ private extension ArticlesTable {
 		return articles
 	}
 
+	func fetchTodayArticles(_ feedIDs: Set<String>) -> Set<Article> {
+
+		if feedIDs.isEmpty {
+			return Set<Article>()
+		}
+
+		var articles = Set<Article>()
+
+		queue.fetchSync { (database) in
+
+			// select * from articles natural join statuses where feedID in ('http://ranchero.com/xml/rss.xml') and (datePublished > ? || (datePublished is null and dateArrived > ?)
+			//
+			// datePublished may be nil, so we fall back to dateArrived.
+
+			let startOfToday = NSCalendar.startOfToday()
+			let parameters = feedIDs.map { $0 as AnyObject } + [startOfToday as AnyObject, startOfToday as AnyObject]
+			let placeholders = NSString.rs_SQLValueList(withPlaceholders: UInt(feedIDs.count))!
+			let whereClause = "feedID in \(placeholders) and (datePublished > ? or (datePublished is null and dateArrived > ?)) and userDeleted = 0"
+//			let whereClause = "feedID in \(placeholders) and datePublished > ? and userDeleted = 0"
+			articles = self.fetchArticlesWithWhereClause(database, whereClause: whereClause, parameters: parameters, withLimits: false)
+		}
+
+		return articles
+	}
+
 	func articlesWithSQL(_ sql: String, _ parameters: [AnyObject], _ database: FMDatabase) -> Set<Article> {
 
 		guard let resultSet = database.executeQuery(sql, withArgumentsIn: parameters) else {

Frameworks/Database/Database.swift

@@ -57,6 +57,11 @@ public final class Database {
 		return articlesTable.fetchUnreadArticles(for: feeds)
 	}
 
+	public func fetchTodayArticles(for feeds: Set<Feed>) -> Set<Article> {
+		
+		return articlesTable.fetchTodayArticles(for: feeds)
+	}
+
 	// MARK: - Unread Counts
 	
 	public func fetchUnreadCounts(for feeds: Set<Feed>, _ completion: @escaping UnreadCountCompletionBlock) {

Frameworks/Database/Extensions/Article+Database.swift

@@ -23,7 +23,7 @@ extension Article {
 		let authors = Author.authorsWithParsedAuthors(parsedItem.authors)
 		let attachments = Attachment.attachmentsWithParsedAttachments(parsedItem.attachments)
 
-		self.init(accountID: accountID, articleID: parsedItem.syncServiceID, feedID: feedID, uniqueID: parsedItem.uniqueID, title: parsedItem.title, contentHTML: parsedItem.contentHTML, contentText: parsedItem.contentText, url: parsedItem.url, externalURL: parsedItem.externalURL, summary: parsedItem.summary, imageURL: parsedItem.imageURL, bannerImageURL: parsedItem.bannerImageURL, datePublished: parsedItem.datePublished, dateModified: parsedItem.dateModified, authors: authors, attachments: attachments, status: status)
+		self.init(accountID: accountID, articleID: parsedItem.syncServiceID, feedID: feedID, uniqueID: parsedItem.uniqueID, title: parsedItem.title, contentHTML: parsedItem.contentHTML, contentText: parsedItem.contentText, url: parsedItem.url, externalURL: parsedItem.externalURL, summary: parsedItem.summary, imageURL: parsedItem.imageURL, bannerImageURL: parsedItem.bannerImageURL, datePublished: parsedItem.datePublished ?? parsedItem.dateModified, dateModified: parsedItem.dateModified, authors: authors, attachments: attachments, status: status)
 	}
 
 	private func addPossibleStringChangeWithKeyPath(_ comparisonKeyPath: KeyPath<Article,String?>, _ otherArticle: Article, _ key: String, _ dictionary: NSMutableDictionary) {