mirror of
https://github.com/Ranchero-Software/NetNewsWire.git
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237 lines
7.3 KiB
Swift
237 lines
7.3 KiB
Swift
//
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// Database.swift
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// Evergreen
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//
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// Created by Brent Simmons on 7/20/15.
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// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import RSCore
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import RSDatabase
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import RSParser
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import Data
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public typealias ArticleResultBlock = (Set<Article>) -> Void
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public typealias UnreadCountTable = [String: Int] // feedID: unreadCount
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public typealias UnreadCountCompletionBlock = (UnreadCountTable) -> Void //feedID: unreadCount
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typealias UpdateArticlesWithFeedCompletionBlock = (Set<Article>, Set<Article>) -> Void
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public final class Database {
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private let queue: RSDatabaseQueue
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private let databaseFile: String
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private let articlesTable: ArticlesTable
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private var articleArrivalCutoffDate = NSDate.rs_dateWithNumberOfDays(inThePast: 3 * 31)!
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private let minimumNumberOfArticles = 10
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public init(databaseFile: String) {
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self.account = account
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self.databaseFile = databaseFile
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self.queue = RSDatabaseQueue(filepath: databaseFile, excludeFromBackup: false)
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self.articlesTable = ArticlesTable(name: DatabaseTableName.articles, account: account, queue: queue)
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let createStatementsPath = Bundle(for: type(of: self)).path(forResource: "CreateStatements", ofType: "sql")!
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let createStatements = try! NSString(contentsOfFile: createStatementsPath, encoding: String.Encoding.utf8.rawValue)
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queue.createTables(usingStatements: createStatements as String)
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queue.vacuumIfNeeded()
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}
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// MARK: - Fetching Articles
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public func fetchArticles(for feed: Feed) -> Set<Article> {
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return articlesTable.fetchArticles(feed)
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}
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public func fetchArticlesAsync(for feed: Feed, _ resultBlock: @escaping ArticleResultBlock) {
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articlesTable.fetchArticlesAsync(feed, withLimits: true, resultBlock)
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}
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public func fetchUnreadArticles(for folder: Folder) -> Set<Article> {
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return articlesTable.fetchUnreadArticles(for: folder.flattenedFeeds())
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}
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// MARK: - Unread Counts
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public func fetchUnreadCounts(for feeds: Set<Feed>, _ completion: @escaping UnreadCountCompletionBlock) {
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articlesTable.fetchUnreadCounts(feeds, completion)
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}
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// MARK: - Updating Articles
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public func update(feed: Feed, parsedFeed: ParsedFeed, completion: @escaping RSVoidCompletionBlock) {
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return articlesTable.update(feed, parsedFeed, completion)
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}
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// MARK: - Status
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public func mark(_ articles: Set<Article>, statusKey: String, flag: Bool) {
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articlesTable.mark(articles, statusKey, flag)
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}
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}
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// MARK: - Private
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private extension Database {
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// MARK: Saving Articles
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// func saveUpdatedAndNewArticles(_ articleChanges: Set<NSDictionary>, newArticles: Set<Article>) {
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//
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// if articleChanges.isEmpty && newArticles.isEmpty {
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// return
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// }
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//
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// statusesTable.assertNoMissingStatuses(newArticles)
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// articleCache.cacheArticles(newArticles)
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//
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// let newArticleDictionaries = newArticles.map { (oneArticle) in
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// return oneArticle.databaseDictionary()
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// }
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//
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// queue.update { (database: FMDatabase!) -> Void in
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//
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// if !articleChanges.isEmpty {
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//
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// for oneDictionary in articleChanges {
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//
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// let oneArticleDictionary = oneDictionary.mutableCopy() as! NSMutableDictionary
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// let articleID = oneArticleDictionary[DatabaseKey.articleID]!
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// oneArticleDictionary.removeObject(forKey: DatabaseKey.articleID)
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//
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// let _ = database.rs_updateRows(with: oneArticleDictionary as [NSObject: AnyObject], whereKey: DatabaseKey.articleID, equalsValue: articleID, tableName: DatabaseTableName.articles)
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// }
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//
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// }
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// if !newArticleDictionaries.isEmpty {
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//
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// for oneNewArticleDictionary in newArticleDictionaries {
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// let _ = database.rs_insertRow(with: oneNewArticleDictionary as [NSObject: AnyObject], insertType: RSDatabaseInsertOrReplace, tableName: DatabaseTableName.articles)
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// }
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// }
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// }
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// }
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//
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// // MARK: Updating Articles
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//
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// func updateArticles(_ articles: [String: Article], parsedArticles: [String: ParsedItem], feed: Feed, completionHandler: @escaping RSVoidCompletionBlock) {
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//
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// statusesTable.ensureStatusesForParsedArticles(Set(parsedArticles.values)) {
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//
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// let articleChanges = self.updateExistingArticles(articles, parsedArticles)
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// let newArticles = self.createNewArticles(articles, parsedArticles: parsedArticles, feedID: feed.feedID)
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//
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// self.saveUpdatedAndNewArticles(articleChanges, newArticles: newArticles)
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//
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// completionHandler()
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// }
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// }
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//
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// func articlesDictionary(_ articles: NSSet) -> [String: AnyObject] {
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//
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// var d = [String: AnyObject]()
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// for oneArticle in articles {
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// let oneArticleID = (oneArticle as AnyObject).value(forKey: DatabaseKey.articleID) as! String
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// d[oneArticleID] = oneArticle as AnyObject
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// }
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// return d
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// }
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//
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// func updateExistingArticles(_ articles: [String: Article], _ parsedArticles: [String: ParsedItem]) -> Set<NSDictionary> {
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//
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// var articleChanges = Set<NSDictionary>()
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//
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// for oneArticle in articles.values {
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// if let oneParsedArticle = parsedArticles[oneArticle.articleID] {
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// if let oneArticleChanges = oneArticle.updateWithParsedArticle(oneParsedArticle) {
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// articleChanges.insert(oneArticleChanges)
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// }
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// }
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// }
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//
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// return articleChanges
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// }
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//
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// // MARK: Creating Articles
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//
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// func createNewArticlesWithParsedArticles(_ parsedArticles: Set<ParsedItem>, feedID: String) -> Set<Article> {
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//
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// return Set(parsedArticles.map { Article(account: account, feedID: feedID, parsedArticle: $0) })
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// }
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//
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// func articlesWithParsedArticles(_ parsedArticles: Set<ParsedItem>, feedID: String) -> Set<Article> {
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//
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// var localArticles = Set<Article>()
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//
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// for oneParsedArticle in parsedArticles {
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// let oneLocalArticle = Article(account: self.account, feedID: feedID, parsedArticle: oneParsedArticle)
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// localArticles.insert(oneLocalArticle)
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// }
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//
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// return localArticles
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// }
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//
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// func createNewArticles(_ existingArticles: [String: Article], parsedArticles: [String: ParsedItem], feedID: String) -> Set<Article> {
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//
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// let newParsedArticles = parsedArticlesMinusExistingArticles(parsedArticles, existingArticles: existingArticles)
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// let newArticles = createNewArticlesWithParsedArticles(newParsedArticles, feedID: feedID)
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//
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// statusesTable.attachCachedUniqueStatuses(newArticles)
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//
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// return newArticles
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// }
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//
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// func parsedArticlesMinusExistingArticles(_ parsedArticles: [String: ParsedItem], existingArticles: [String: Article]) -> Set<ParsedItem> {
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//
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// var result = Set<ParsedItem>()
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//
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// for oneParsedArticle in parsedArticles.values {
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//
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// if let _ = existingArticles[oneParsedArticle.databaseID] {
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// continue
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// }
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// result.insert(oneParsedArticle)
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// }
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//
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// return result
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// }
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//
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// // MARK: Filtering out old articles
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//
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// func articleIsOlderThanCutoffDate(_ article: Article) -> Bool {
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//
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// if let dateArrived = article.status?.dateArrived {
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// return dateArrived < articleArrivalCutoffDate
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// }
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// return false
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// }
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//
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// func articleShouldAppearToUser(_ article: Article, _ numberOfArticlesInFeed: Int) -> Bool {
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//
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// if numberOfArticlesInFeed <= minimumNumberOfArticles {
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// return true
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// }
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// return articleShouldBeSavedForever(article) || !articleIsOlderThanCutoffDate(article)
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// }
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//
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//
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// func deletePossibleOldArticles(_ articles: Set<Article>) {
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//
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// let feedIDs = feedIDsFromArticles(articles)
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// if feedIDs.isEmpty {
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// return
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// }
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// }
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}
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