🐛 Don't consider an app outdated if the update can't be installed on the current OS

Brewfile.lock.json

@@ -130,11 +130,11 @@
   "system": {
     "macos": {
       "monterey": {
-        "HOMEBREW_VERSION": "3.2.9-73-g7e7bdca",
-        "HOMEBREW_PREFIX": "/opt/homebrew",
-        "Homebrew/homebrew-core": "42fd3eec28f71853a59e12f77bcaff2f103097b5",
-        "CLT": "12.5.0.22.9",
-        "Xcode": "12.5.1",
+        "HOMEBREW_VERSION": "3.2.14-35-g9b42a10",
+        "HOMEBREW_PREFIX": "/usr/local",
+        "Homebrew/homebrew-core": "4119ab758ae132acdae47e218d718ff273a47997",
+        "CLT": "13.0.0.0.1.1630607135",
+        "Xcode": "13.0",
         "macOS": "12.0"
       }
     }

Package.resolved

@@ -60,16 +60,16 @@
         "repositoryURL": "/~https://github.com/apple/swift-argument-parser.git",
         "state": {
           "branch": null,
-          "revision": "83b23d940471b313427da226196661856f6ba3e0",
-          "version": "0.4.4"
+          "revision": "d2930e8fcf9c33162b9fcc1d522bc975e2d4179b",
+          "version": "1.0.1"
         }
       },
       {
         "package": "swift-format",
         "repositoryURL": "/~https://github.com/apple/swift-format",
         "state": {
-          "branch": "swift-5.4-branch",
-          "revision": "9c15831b798d767c9af0927a931de5d557004936",
+          "branch": "swift-5.5-branch",
+          "revision": "f872223e16742fd97fabd319fbf4a939230cc796",
           "version": null
         }
       },
@@ -78,8 +78,8 @@
         "repositoryURL": "/~https://github.com/apple/swift-syntax",
         "state": {
           "branch": null,
-          "revision": "2fff9fc25cdc059379b6bd309377cfab45d8520c",
-          "version": "0.50400.0"
+          "revision": "75e60475d9d8fd5bbc16a12e0eaa2cb01b0c322e",
+          "version": "0.50500.0"
         }
       },
       {

Sources/MasKit/Models/SearchResult.swift

@@ -10,6 +10,7 @@ struct SearchResult: Decodable {
     var bundleId: String
     var currentVersionReleaseDate: String
     var fileSizeBytes: String?
+    var kind: String
     var minimumOsVersion: String
     var price: Double?
     var sellerName: String
@@ -23,6 +24,7 @@ struct SearchResult: Decodable {
         bundleId: String = "",
         currentVersionReleaseDate: String = "",
         fileSizeBytes: String = "0",
+        kind: String = "",
         minimumOsVersion: String = "",
         price: Double = 0.0,
         sellerName: String = "",
@@ -35,6 +37,7 @@ struct SearchResult: Decodable {
         self.bundleId = bundleId
         self.currentVersionReleaseDate = currentVersionReleaseDate
         self.fileSizeBytes = fileSizeBytes
+        self.kind = kind
         self.minimumOsVersion = minimumOsVersion
         self.price = price
         self.sellerName = sellerName

Sources/MasKit/Models/SoftwareProduct.swift

@@ -24,7 +24,21 @@ extension SoftwareProduct {
         appName.isEmpty ? bundleIdentifier : appName
     }
 
+    /// Determines whether the app is considered outdated. Updates that require a higher OS version are excluded.
+    /// - Parameter storeApp: App from search result.
+    /// - Returns: true if the app is outdated; false otherwise.
     func isOutdatedWhenComparedTo(_ storeApp: SearchResult) -> Bool {
+        // Only look at min OS version if we have one, also only consider macOS apps
+        // Replace string literal with MasStoreSearch.Entity once `search` branch is merged.
+        if let osVersion = Version(tolerant: storeApp.minimumOsVersion), storeApp.kind == "mac-software" {
+            let requiredVersion = OperatingSystemVersion(majorVersion: osVersion.major, minorVersion: osVersion.minor,
+                                                         patchVersion: osVersion.patch)
+            // Don't consider an app outdated if the version in the app store requires a higher OS version.
+            guard ProcessInfo.processInfo.isOperatingSystemAtLeast(requiredVersion) else {
+                return false
+            }
+        }
+
         // The App Store does not enforce semantic versioning, but we assume most apps follow versioning
         // schemes that increase numerically over time.
         guard let semanticBundleVersion = Version(tolerant: bundleVersion),

Tests/MasKitTests/Models/SoftwareProductSpec.swift

@@ -0,0 +1,43 @@
+//
+//  SoftwareProductSpec.swift
+//  MasKitTests
+//
+//  Created by Ben Chatelain on 9/30/21.
+//  Copyright © 2018 mas-cli. All rights reserved.
+//
+
+import Foundation
+import Nimble
+import Quick
+
+@testable import MasKit
+
+public class SoftwareProductSpec: QuickSpec {
+    override public func spec() {
+        beforeSuite {
+            MasKit.initialize()
+        }
+        describe("software product") {
+            let app = SoftwareProductMock(appName: "App", bundleIdentifier: "", bundlePath: "", bundleVersion: "1.0.0",
+                                          itemIdentifier: 111)
+
+            let currentApp = SearchResult(kind: "mac-software", version: "1.0.0")
+            let appUpdate = SearchResult(kind: "mac-software", version: "2.0.0")
+            let higherOs = SearchResult(kind: "mac-software", minimumOsVersion: "99.0.0", version: "3.0.0")
+            let updateIos = SearchResult(kind: "software", minimumOsVersion: "99.0.0", version: "3.0.0")
+
+            it("is not outdated when there is no new version available") {
+                expect(app.isOutdatedWhenComparedTo(currentApp)) == false
+            }
+            it("is outdated when there is a new version available") {
+                expect(app.isOutdatedWhenComparedTo(appUpdate)) == true
+            }
+            it("is not outdated when the new version requires a higher OS version") {
+                expect(app.isOutdatedWhenComparedTo(higherOs)) == false
+            }
+            it("ignores minimum iOS version") {
+                expect(app.isOutdatedWhenComparedTo(updateIos)) == true
+            }
+        }
+    }
+}