Adding notifications for updater (#70)

Brief/Brief.h

@@ -0,0 +1,19 @@
+//
+//  Brief.h
+//  Brief
+//
+//  Created by Max Goedjen on 3/21/20.
+//  Copyright © 2020 Max Goedjen. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+//! Project version number for Brief.
+FOUNDATION_EXPORT double BriefVersionNumber;
+
+//! Project version string for Brief.
+FOUNDATION_EXPORT const unsigned char BriefVersionString[];
+
+// In this header, you should import all the public headers of your framework using statements like #import <Brief/PublicHeader.h>
+
+

Brief/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2020 Max Goedjen. All rights reserved.</string>
+</dict>
+</plist>

Brief/Updater.swift

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+import Foundation
+import Combine
+
+public protocol UpdaterProtocol: ObservableObject {
+
+    var update: Release? { get }
+
+}
+
+public class Updater: ObservableObject, UpdaterProtocol {
+
+    @Published public var update: Release?
+
+    public init() {
+        checkForUpdates()
+        let timer = Timer.scheduledTimer(withTimeInterval: 60*60*24, repeats: true) { _ in
+            self.checkForUpdates()
+        }
+        timer.tolerance = 60*60
+    }
+
+    public func checkForUpdates() {
+        URLSession.shared.dataTask(with: Constants.updateURL) { data, _, _ in
+            guard let data = data else { return }
+            guard let release = try? JSONDecoder().decode(Release.self, from: data) else { return }
+            self.evaluate(release: release)
+        }.resume()
+    }
+
+    func evaluate(release: Release) {
+        let latestVersion = semVer(from: release.name)
+        let currentVersion = semVer(from: Bundle.main.infoDictionary!["CFBundleShortVersionString"] as! String)
+        for (latest, current) in zip(latestVersion, currentVersion) {
+            if latest > current {
+                DispatchQueue.main.async {
+                    self.update = release
+                }
+                return
+            }
+        }
+    }
+
+    func semVer(from stringVersion: String) -> [Int] {
+        var split = stringVersion.split(separator: ".").compactMap { Int($0) }
+        while split.count < 3 {
+            split.append(0)
+        }
+        return split
+    }
+
+}
+
+extension Updater {
+
+    enum Constants {
+        static let updateURL = URL(string: "https://api.github.com/repos/maxgoedjen/secretive/releases/latest")!
+    }
+
+}
+
+public struct Release: Codable {
+
+    public let name: String
+    public let html_url: URL
+    public let body: String
+
+    public  init(name: String, html_url: URL, body: String) {
+        self.name = name
+        self.html_url = html_url
+        self.body = body
+    }
+
+}
+
+
+extension Release {
+
+    public var critical: Bool {
+        return body.contains(Constants.securityContent)
+    }
+
+}
+
+extension Release {
+
+    enum Constants {
+        static let securityContent = "Critical Security Update"
+    }
+
+}