47 lines
1.5 KiB
Swift
47 lines
1.5 KiB
Swift
//
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// CacheCleaner.swift
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// NetNewsWire
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//
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// Created by Maurice Parker on 11/8/19.
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// Copyright © 2019 Ranchero Software. All rights reserved.
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//
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import Foundation
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import os.log
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struct CacheCleaner {
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static let log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "CacheCleaner")
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static func purgeIfNecessary() {
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// If the image disk cache hasn't been flushed for 3 days and the network is available, delete it
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if let flushDate = AppDefaults.lastImageCacheFlushDate, flushDate.addingTimeInterval(3600*24*3) < Date() {
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if let reachability = try? Reachability(hostname: "apple.com") {
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if reachability.connection != .unavailable {
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let tempDir = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first!
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let faviconsFolderURL = tempDir.appendingPathComponent("Favicons")
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let imagesFolderURL = tempDir.appendingPathComponent("Images")
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let homePageToIconURL = tempDir.appendingPathComponent("HomePageToIconURLCache.plist")
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let homePagesWithNoIconURL = tempDir.appendingPathComponent("HomePagesWithNoIconURLCache.plist")
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for tempItem in [faviconsFolderURL, imagesFolderURL, homePageToIconURL, homePagesWithNoIconURL] {
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do {
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os_log(.info, log: self.log, "Removing cache file: %@", tempItem.absoluteString)
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try FileManager.default.removeItem(at: tempItem)
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} catch {
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os_log(.error, log: self.log, "Could not delete cache file: %@", error.localizedDescription)
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}
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}
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AppDefaults.lastImageCacheFlushDate = Date()
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}
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}
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}
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}
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}
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