Initial commit

.drstring.toml

@@ -0,0 +1,5 @@
+include = ["Mist/**/*.swift"]
+align-after-colon = ["parameters", "throws", "returns"]
+parameter-style = "grouped"
+needs-separation = ["description", "parameters", "throws"]
+vertical-align = true

.gitignore

@@ -0,0 +1,6 @@
+.DS_Store
+.build/
+.swiftpm/
+build/
+xcuserdata/
+Package.resolved

.swiftlint.yml

@@ -0,0 +1,78 @@
+excluded:
+  - .build
+
+closure_body_length:
+  warning: 20
+  error: 40
+
+line_length:
+  warning: 200
+  error: 220
+
+missing_docs:
+  warning:
+    - private
+    - fileprivate
+    - internal
+    - public
+    - open
+
+opt_in_rules:
+  - attributes
+  - balanced_xctest_lifecycle
+  - closure_body_length
+  - closure_end_indentation
+  - closure_spacing
+  - collection_alignment
+  - conditional_returns_on_newline
+  - discarded_notification_center_observer
+  - discouraged_optional_boolean
+  - discouraged_optional_collection
+  - empty_collection_literal
+  - empty_count
+  - empty_string
+  - empty_xctest_method
+  - enum_case_associated_values_count
+  - explicit_enum_raw_value
+  - explicit_init
+  - explicit_type_interface
+  - file_header
+  - file_name
+  - file_name_no_space
+  - file_types_order
+  - first_where
+  - flatmap_over_map_reduce
+  - function_default_parameter_at_end
+  - force_unwrapping
+  - identical_operands
+  - implicit_return
+  - implicitly_unwrapped_optional
+  - indentation_width
+  - joined_default_parameter
+  - last_where
+  - literal_expression_end_indentation
+  - missing_docs
+  - modifier_order
+  - multiline_arguments
+  - multiline_arguments_brackets
+  - multiline_function_chains
+  - multiline_literal_brackets
+  - multiline_parameters
+  - multiline_parameters_brackets
+  - nimble_operator
+  - number_separator
+  - operator_usage_whitespace
+  - prefer_zero_over_explicit_init
+  - redundant_nil_coalescing
+  - sorted_first_last
+  - sorted_imports
+  - switch_case_on_newline
+  - toggle_bool
+  - trailing_closure
+  - type_contents_order
+  - unneeded_parentheses_in_closure_argument
+  - unused_declaration
+  - unused_import
+  - vertical_parameter_alignment_on_call
+  - vertical_whitespace_closing_braces
+  - yoda_condition

Mist.pkg.recipe.yaml

@@ -0,0 +1,34 @@
+---
+Identifier: com.ninxsoft.pkg.mist
+Input:
+  NAME: Mist
+Process:
+  - Processor: URLDownloader
+    Arguments:
+      PKG: /Applications/Mist.app
+      url: ""
+  - Processor: EndOfCheckPhase
+  - Processor: CodeSignatureVerifier
+    Arguments:
+      input_path: "%pathname%"
+      requirement: 'anchor apple generic and identifier "com.ninxsoft.mist" and (certificate leaf[field.1.2.840.113635.100.6.1.9] /* exists */ or certificate 1[field.1.2.840.113635.100.6.2.6] /* exists */ and certificate leaf[field.1.2.840.113635.100.6.1.13] /* exists */ and certificate leaf[subject.OU] = "7K3HVCLV7Z")'
+  - Processor: Versioner
+    Arguments:
+      input_plist_path: "%pathname%/Contents/Info.plist"
+  - Processor: AppPkgCreator
+    Arguments:
+      app_path: "%pathname%"
+      pkg_path: "%RECIPE_CACHE_DIR%/%NAME%-%version%.pkg"
+      version: "%version%"
+  - Processor: PkgSigner
+    Arguments:
+      pkg_path: "%RECIPE_CACHE_DIR%/%NAME%-%version%.pkg"
+      signing_cert: "%DEVELOPER_ID_INSTALLER%"
+  - Processor: FileMover
+    Arguments:
+      source: "%RECIPE_CACHE_DIR%/%NAME%-%version%.pkg"
+      target: "%DESTINATION_DIR%/%NAME% %version%.pkg"
+  - Processor: PathDeleter
+    Arguments:
+      path_list:
+        - "%RECIPE_CACHE_DIR%/%NAME%-%version%-unsigned.pkg"

Mist.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

Mist.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?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>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

Mist.xcodeproj/xcshareddata/xcschemes/Mist.xcscheme

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1400"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "390451A52856E1D900E0B563"
+               BuildableName = "Mist.app"
+               BlueprintName = "Mist"
+               ReferencedContainer = "container:Mist.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "390451A52856E1D900E0B563"
+            BuildableName = "Mist.app"
+            BlueprintName = "Mist"
+            ReferencedContainer = "container:Mist.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "390451A52856E1D900E0B563"
+            BuildableName = "Mist.app"
+            BlueprintName = "Mist"
+            ReferencedContainer = "container:Mist.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Mist.xcodeproj/xcshareddata/xcschemes/MistHelperTool.xcscheme

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1400"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "39CF559C28614DD8006FB5D2"
+               BuildableName = "com.ninxsoft.mist.helper"
+               BlueprintName = "MistHelperTool"
+               ReferencedContainer = "container:Mist.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "39CF559C28614DD8006FB5D2"
+            BuildableName = "com.ninxsoft.mist.helper"
+            BlueprintName = "MistHelperTool"
+            ReferencedContainer = "container:Mist.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "39CF559C28614DD8006FB5D2"
+            BuildableName = "com.ninxsoft.mist.helper"
+            BlueprintName = "MistHelperTool"
+            ReferencedContainer = "container:Mist.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Mist/AppCommands.swift

@@ -0,0 +1,61 @@
+//
+//  AppCommands.swift
+//  Mist
+//
+//  Created by Nindi Gill on 15/6/2022.
+//
+
+import Blessed
+import SwiftUI
+
+struct AppCommands: Commands {
+    @Environment(\.openURL) var openURL: OpenURLAction
+    @ObservedObject var sparkleUpdater: SparkleUpdater
+    @Binding var refreshing: Bool
+    @Binding var downloadInProgress: Bool
+
+    @CommandsBuilder var body: some Commands {
+        CommandGroup(after: .appInfo) {
+            Button("Check for Updates...") {
+                sparkleUpdater.checkForUpdates()
+            }
+            .disabled(!sparkleUpdater.canCheckForUpdates)
+        }
+        CommandGroup(replacing: .newItem) {
+            Button("Refresh") {
+                refresh()
+            }
+            .keyboardShortcut("r")
+            .disabled(refreshing || downloadInProgress)
+        }
+        CommandGroup(replacing: .saveItem) {}
+        CommandGroup(replacing: .systemServices) {
+            Button("Install Privileged Helper Tool...") {
+                install()
+            }
+            .disabled(downloadInProgress)
+        }
+        CommandGroup(replacing: .help) {
+            Button("Mist Help") {
+                help()
+            }
+        }
+    }
+
+    private func refresh() {
+        refreshing = true
+    }
+
+    private func install() {
+        try? PrivilegedHelperManager.shared.authorizeAndBless()
+    }
+
+    private func help() {
+
+        guard let url: URL = URL(string: .repositoryURL) else {
+            return
+        }
+
+        openURL(url)
+    }
+}

Mist/AppDelegate.swift

@@ -0,0 +1,60 @@
+//
+//  AppDelegate.swift
+//  Mist
+//
+//  Created by Nindi Gill on 16/6/2022.
+//
+
+import Cocoa
+import UserNotifications
+
+class AppDelegate: NSObject, NSApplicationDelegate {
+
+    // swiftlint:disable:next weak_delegate
+    private let userNotificationCenterDelegate: UserNotificationCenterDelegate = UserNotificationCenterDelegate()
+
+    func applicationDidFinishLaunching(_ notification: Notification) {
+        UNUserNotificationCenter.current().delegate = userNotificationCenterDelegate
+        let show: UNNotificationAction = UNNotificationAction(identifier: UNNotificationAction.Identifier.show, title: "Show", options: .foreground)
+        let success: UNNotificationCategory = UNNotificationCategory(identifier: UNNotificationCategory.Identifier.success, actions: [show], intentIdentifiers: [], options: [])
+        let failure: UNNotificationCategory = UNNotificationCategory(identifier: UNNotificationCategory.Identifier.failure, actions: [], intentIdentifiers: [], options: [])
+        UNUserNotificationCenter.current().setNotificationCategories([success, failure])
+    }
+
+    func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+        true
+    }
+
+    func sendUpdateNotification(title: String, body: String, success: Bool, url: URL?) {
+
+        let notificationCenter: UNUserNotificationCenter = .current()
+        notificationCenter.getNotificationSettings { settings in
+
+            guard [.authorized, .provisional].contains(settings.authorizationStatus) else {
+                return
+            }
+
+            let identifier: String = UUID().uuidString
+            let content: UNMutableNotificationContent = UNMutableNotificationContent()
+            content.title = title
+            content.body = body
+            content.sound = .default
+            content.categoryIdentifier = success ? UNNotificationCategory.Identifier.success : UNNotificationCategory.Identifier.failure
+
+            if success,
+                let url: URL = url {
+                content.userInfo = ["URL": url.path]
+            }
+
+            let trigger: UNTimeIntervalNotificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: 1, repeats: false)
+            let request: UNNotificationRequest = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
+
+            notificationCenter.add(request) { error in
+
+                if let error: Error = error {
+                    print(error.localizedDescription)
+                }
+            }
+        }
+    }
+}

Mist/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,56 @@
+{
+  "colors" : [
+    {
+      "color" : {
+        "color-space" : "display-p3",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.269",
+          "green" : "0.647",
+          "red" : "0.946"
+        }
+      },
+      "idiom" : "mac"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "light"
+        }
+      ],
+      "color" : {
+        "color-space" : "display-p3",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.269",
+          "green" : "0.647",
+          "red" : "0.946"
+        }
+      },
+      "idiom" : "mac"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "color" : {
+        "color-space" : "display-p3",
+        "components" : {
+          "alpha" : "1.000",
+          "blue" : "0.269",
+          "green" : "0.647",
+          "red" : "0.946"
+        }
+      },
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,68 @@
+{
+  "images" : [
+    {
+      "filename" : "icon_16x16.png",
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "16x16"
+    },
+    {
+      "filename" : "icon_16x16@2x.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "16x16"
+    },
+    {
+      "filename" : "icon_32x32.png",
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "32x32"
+    },
+    {
+      "filename" : "icon_32x32@2x.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "32x32"
+    },
+    {
+      "filename" : "icon_128x128.png",
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "128x128"
+    },
+    {
+      "filename" : "icon_128x128@2x.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "128x128"
+    },
+    {
+      "filename" : "icon_256x256.png",
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "256x256"
+    },
+    {
+      "filename" : "icon_256x256@2x.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "256x256"
+    },
+    {
+      "filename" : "icon_512x512.png",
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "512x512"
+    },
+    {
+      "filename" : "icon_512x512@2x.png",
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "512x512"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS Big Sur.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installers - macOS Big Sur.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS Catalina.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installer - macOS Catalina.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS High Sierra.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installer - macOS High Sierra.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS Mojave.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installers - macOS Mojave.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS Monterey.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installer - macOS Monterey.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS Ventura.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installer - macOS Ventura.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Application - macOS.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "App Installer - macOS.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Certificate.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Certificate.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Cleanup.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "Cleanup.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Disk Image.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Disk Image.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Download.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Download.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Firmware.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Firmware.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/ISO.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "ISO.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Installer.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Installer.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Package.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Package.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/Setup.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "Setup.png",
+      "idiom" : "mac"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Mist/Assets.xcassets/macOS Big Sur.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "macOS Big Sur.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/macOS Catalina.imageset/Contents.json

@@ -0,0 +1,22 @@
+{
+  "images": [
+    {
+      "filename": "macOS Catalina Light.png",
+      "idiom": "mac"
+    },
+    {
+      "appearances": [
+        {
+          "appearance": "luminosity",
+          "value": "dark"
+        }
+      ],
+      "filename": "macOS Catalina Dark.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/macOS High Sierra.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "macOS High Sierra.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/macOS Mojave.imageset/Contents.json

@@ -0,0 +1,22 @@
+{
+  "images": [
+    {
+      "filename": "macOS Mojave Light.png",
+      "idiom": "mac"
+    },
+    {
+      "appearances": [
+        {
+          "appearance": "luminosity",
+          "value": "dark"
+        }
+      ],
+      "filename": "macOS Mojave Dark.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/macOS Monterey.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "macOS Monterey.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/macOS Ventura.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "macOS Ventura.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Assets.xcassets/macOS.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images": [
+    {
+      "filename": "macOS.png",
+      "idiom": "mac"
+    }
+  ],
+  "info": {
+    "author": "xcode",
+    "version": 1
+  }
+}

Mist/Extensions/Array+Extension.swift

@@ -0,0 +1,27 @@
+//
+//  Array+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 20/6/2022.
+//
+
+import Foundation
+
+extension Array where Element == UInt8 {
+
+    func uInt8(at offset: Int) -> UInt8 {
+        self[offset]
+    }
+
+    func uInt32(at offset: Int) -> UInt32 {
+        self[offset...offset + 0x03].reversed().reduce(0) {
+            $0 << 0x08 + UInt32($1)
+        }
+    }
+
+    func uInt64(at offset: Int) -> UInt64 {
+        self[offset...offset + 0x07].reversed().reduce(0) {
+            $0 << 0x08 + UInt64($1)
+        }
+    }
+}

Mist/Extensions/AuthorizationError+Extension.swift

@@ -0,0 +1,15 @@
+//
+//  AuthorizationError+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Authorized
+
+extension AuthorizationError: Equatable {
+
+    public static func == (lhs: AuthorizationError, rhs: AuthorizationError) -> Bool {
+        lhs.localizedDescription == rhs.localizedDescription
+    }
+}

Mist/Extensions/Dictionary+Extension.swift

@@ -0,0 +1,58 @@
+//
+//  Dictionary+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 13/6/2022.
+//
+
+import Foundation
+import Yams
+
+extension Dictionary where Key == String {
+
+    func firmwareCSVString() -> String {
+
+        guard let signed: Bool = self["signed"] as? Bool,
+            let name: String = self["name"] as? String,
+            let version: String = self["version"] as? String,
+            let build: String = self["build"] as? String,
+            let size: Int64 = self["size"] as? Int64,
+            let date: String = self["date"] as? String,
+            let compatible: Bool = self["compatible"] as? Bool else {
+            return ""
+        }
+
+        let string: String = "\(signed ? "YES" : "NO"),\"\(name)\",\"=\"\"\(version)\"\"\",\"=\"\"\(build)\"\"\",\(size),\(date),\(compatible ? "YES" : "NO")\n"
+        return string
+    }
+
+    func installerCSVString() -> String {
+
+        guard let identifier: String = self["identifier"] as? String,
+            let name: String = self["name"] as? String,
+            let version: String = self["version"] as? String,
+            let build: String = self["build"] as? String,
+            let size: Int64 = self["size"] as? Int64,
+            let date: String = self["date"] as? String,
+            let compatible: Bool = self["compatible"] as? Bool else {
+            return ""
+        }
+
+        let string: String = "\"\(identifier)\",\"\(name)\",\"=\"\"\(version)\"\"\",\"=\"\"\(build)\"\"\",\(size),\(date),\(compatible ? "YES" : "NO")\n"
+        return string
+    }
+
+    func jsonString() throws -> String {
+        let data: Data = try JSONSerialization.data(withJSONObject: self, options: [.prettyPrinted, .sortedKeys])
+        return String(data: data, encoding: .utf8) ?? ""
+    }
+
+    func propertyListString() throws -> String {
+        let data: Data = try PropertyListSerialization.data(fromPropertyList: self, format: .xml, options: .bitWidth)
+        return String(data: data, encoding: .utf8) ?? ""
+    }
+
+    func yamlString() throws -> String {
+        try Yams.dump(object: self)
+    }
+}

Mist/Extensions/Double+Extension.swift

@@ -0,0 +1,31 @@
+//
+//  Double+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 24/6/2022.
+//
+
+import Foundation
+
+extension Double {
+
+    /// kilobytes constant
+    static let kilobyte: Double = 1_000
+    /// megabytes constant
+    static let megabyte: Double = .kilobyte * 1_000
+    /// gigabytes constant
+    static let gigabyte: Double = .megabyte * 1_000
+
+    func bytesString() -> String {
+
+        if self < .kilobyte {
+            return "\(Int(self)) bytes"
+        } else if self < .megabyte {
+            return String(format: "%5.2f KB", self / .kilobyte)
+        } else if self < .gigabyte {
+            return String(format: "%5.2f MB", self / .megabyte)
+        } else {
+            return String(format: "%5.2f GB", self / .gigabyte)
+        }
+    }
+}

Mist/Extensions/FileManager+Extension.swift

@@ -0,0 +1,50 @@
+//
+//  FileManager+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 17/6/2022.
+//
+
+import Foundation
+
+extension FileManager {
+
+    func sizeOfDirectory(at url: URL) throws -> UInt64 {
+
+        var enumeratorError: Error?
+
+        let urlResourceKeys: Set<URLResourceKey> = [
+            .isRegularFileKey,
+            .fileAllocatedSizeKey,
+            .totalFileAllocatedSizeKey
+        ]
+
+        guard let enumerator: FileManager.DirectoryEnumerator = self.enumerator(at: url, includingPropertiesForKeys: Array(urlResourceKeys), options: [], errorHandler: { _, error -> Bool in
+            enumeratorError = error
+            return false
+        }) else {
+            return 0
+        }
+
+        var size: UInt64 = 0
+
+        for item in enumerator {
+
+            if enumeratorError != nil {
+                break
+            }
+
+            guard let url: URL = item as? URL else {
+                continue
+            }
+
+            size += try url.fileSize()
+        }
+
+        if let error: Error = enumeratorError {
+            throw error
+        }
+
+        return size
+    }
+}

Mist/Extensions/Sequence+Extension.swift

@@ -0,0 +1,34 @@
+//
+//  Sequence+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 13/6/2022.
+//
+
+import Foundation
+import Yams
+
+extension Sequence where Iterator.Element == [String: Any] {
+
+    func firmwaresCSVString() -> String {
+        "Signed,Name,Version,Build,Size,Date,Compatible\n" + self.map { $0.firmwareCSVString() }.joined()
+    }
+
+    func installersCSVString() -> String {
+        "Identifier,Name,Version,Build,Size,Date,Compatible\n" + self.map { $0.installerCSVString() }.joined()
+    }
+
+    func jsonString() throws -> String {
+        let data: Data = try JSONSerialization.data(withJSONObject: self, options: [.prettyPrinted, .sortedKeys])
+        return String(data: data, encoding: .utf8) ?? ""
+    }
+
+    func propertyListString() throws -> String {
+        let data: Data = try PropertyListSerialization.data(fromPropertyList: self, format: .xml, options: .bitWidth)
+        return String(data: data, encoding: .utf8) ?? ""
+    }
+
+    func yamlString() throws -> String {
+        try Yams.dump(object: self)
+    }
+}

Mist/Extensions/String+Extension.swift

@@ -0,0 +1,34 @@
+//
+//  String+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 13/6/2022.
+//
+
+import Foundation
+
+extension String {
+
+    static let appName: String = "mist"
+    static let appIdentifier: String = "com.ninxsoft.\(appName)"
+    static let helperIdentifier: String = "\(appIdentifier).helper"
+    static let helperLaunchDaemonURL: String = "/Library/LaunchDaemons/\(helperIdentifier).plist"
+    static let helperURL: String = "/Library/PrivilegedHelperTools/\(helperIdentifier)"
+    static let repositoryURL: String = "https://github.com/ninxsoft/\(appName)"
+    static let filenameTemplate: String = "Install %NAME% %VERSION%_%BUILD%"
+    static let firmwareFilenameTemplate: String = "\(filenameTemplate).ipsw"
+    static let applicationFilenameTemplate: String = "\(filenameTemplate).app"
+    static let diskImageFilenameTemplate: String = "\(filenameTemplate).dmg"
+    static let isoFilenameTemplate: String = "\(filenameTemplate).iso"
+    static let packageFilenameTemplate: String = "\(filenameTemplate).pkg"
+    static let packageIdentifierTemplate: String = "com.company.pkg.%NAME%.%VERSION%.%BUILD%"
+    static let temporaryDirectory: String = "/private/tmp/\(appIdentifier)"
+    static let cacheDirectory: String = "/Users/Shared/Mist/Cache"
+
+    func stringWithSubstitutions(name: String, version: String, build: String) -> String {
+        self.replacingOccurrences(of: "%NAME%", with: name)
+            .replacingOccurrences(of: "%VERSION%", with: version)
+            .replacingOccurrences(of: "%BUILD%", with: build)
+            .replacingOccurrences(of: "//", with: "/")
+    }
+}

Mist/Extensions/UInt32+Extension.swift

@@ -0,0 +1,15 @@
+//
+//  UInt32+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 20/6/2022.
+//
+
+import Foundation
+
+extension UInt32 {
+
+    func hexString() -> String {
+        String(format: "0x%08X", self)
+    }
+}

Mist/Extensions/UInt64+Extension.swift

@@ -0,0 +1,35 @@
+//
+//  Int64+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 13/6/2022.
+//
+
+import Foundation
+
+extension UInt64 {
+
+    /// kilobytes constant
+    static let kilobyte: UInt64 = 1_000
+    /// megabytes constant
+    static let megabyte: UInt64 = .kilobyte * 1_000
+    /// gigabytes constant
+    static let gigabyte: UInt64 = .megabyte * 1_000
+
+    func bytesString() -> String {
+
+        if self < .kilobyte {
+            return "\(self) bytes"
+        } else if self < .megabyte {
+            return String(format: "%5.2f KB", Double(self) / Double(.kilobyte))
+        } else if self < .gigabyte {
+            return String(format: "%5.2f MB", Double(self) / Double(.megabyte))
+        } else {
+            return String(format: "%5.2f GB", Double(self) / Double(.gigabyte))
+        }
+    }
+
+    func hexString() -> String {
+        String(format: "0x%016X", self)
+    }
+}

Mist/Extensions/UInt8+Extension.swift

@@ -0,0 +1,15 @@
+//
+//  UInt8+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 20/6/2022.
+//
+
+import Foundation
+
+extension UInt8 {
+
+    func hexString() -> String {
+        String(format: "0x%02X", self)
+    }
+}

Mist/Extensions/UNNotificationAction+Extension.swift

@@ -0,0 +1,16 @@
+//
+//  UNNotificationAction+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 23/6/2022.
+//
+
+import UserNotifications
+
+extension UNNotificationAction {
+
+    struct Identifier {
+        /// Show Identifier
+        static let show: String = "Show"
+    }
+}

Mist/Extensions/UNNotificationCategory+Extension.swift

@@ -0,0 +1,18 @@
+//
+//  UNNotificationCategory+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 23/6/2022.
+//
+
+import UserNotifications
+
+extension UNNotificationCategory {
+
+    struct Identifier {
+        /// Success Identifier
+        static let success: String = "Success"
+        /// Failure Identifier
+        static let failure: String = "Failure"
+    }
+}

Mist/Extensions/URL+Extension.swift

@@ -0,0 +1,62 @@
+//
+//  URL+Extension.swift
+//  Mist
+//
+//  Created by Nindi Gill on 17/6/2022.
+//
+
+import CryptoKit
+import Foundation
+
+extension URL {
+
+    func fileSize() throws -> UInt64 {
+
+        let urlResourceKeys: Set<URLResourceKey> = [
+            .isRegularFileKey,
+            .fileAllocatedSizeKey,
+            .totalFileAllocatedSizeKey
+        ]
+
+        let resourceValues: URLResourceValues = try self.resourceValues(forKeys: urlResourceKeys)
+
+        guard let isRegularFile: Bool = resourceValues.isRegularFile,
+            isRegularFile else {
+            return 0
+        }
+
+        return UInt64(resourceValues.totalFileAllocatedSize ?? resourceValues.fileAllocatedSize ?? 0)
+    }
+
+    func shasum() -> String? {
+
+        let length: Int = 1_024 * 1_024 * 50 // 50 MB
+
+        do {
+            let fileHandle: FileHandle = try FileHandle(forReadingFrom: self)
+
+            defer {
+                fileHandle.closeFile()
+            }
+
+            var shasum: Insecure.SHA1 = Insecure.SHA1()
+
+            while try autoreleasepool(invoking: {
+                try Task.checkCancellation()
+                let data: Data = fileHandle.readData(ofLength: length)
+
+                if !data.isEmpty {
+                    shasum.update(data: data)
+                }
+
+                return !data.isEmpty
+            }) { }
+
+            let data: Data = Data(shasum.finalize())
+            return data.map { String(format: "%02hhx", $0) }.joined()
+        } catch {
+            print(error.localizedDescription)
+            return nil
+        }
+    }
+}

Mist/Helpers/Codesigner.swift

@@ -0,0 +1,28 @@
+//
+//  Codesigner.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to codesign a file (ie. Disk Image).
+struct Codesigner {
+
+    /// Sign a file with the provided signing identity.
+    ///
+    /// - Parameters:
+    ///   - url:      The URL of the file to sign.
+    ///   - identity: The codesigning identity.
+    ///
+    /// - Throws: A `MistError` if the command failed to execute.
+    static func sign(_ url: URL, identity: String) async throws {
+        let arguments: [String] = ["codesign", "--sign", identity, url.path]
+        let result: (terminationStatus: Int32, standardOutput: String?, standardError: String?) = try ShellExecutor.shared.execute(arguments)
+
+        guard result.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: result.terminationStatus, string: result.standardError)
+        }
+    }
+}

Mist/Helpers/DirectoryCreator.swift

@@ -0,0 +1,23 @@
+//
+//  DirectoryCreator.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to create directories.
+struct DirectoryCreator {
+
+    /// Create a directory at the provided URL.
+    ///
+    /// - Parameters:
+    ///   - url: The URL of the directory to create.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func create(_ url: URL) async throws {
+        try await DirectoryRemover.remove(url)
+        try FileManager.default.createDirectory(at: url, withIntermediateDirectories: false, attributes: nil)
+    }
+}

Mist/Helpers/DirectoryRemover.swift

@@ -0,0 +1,35 @@
+//
+//  DirectoryRemover.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+import SecureXPC
+
+/// Helper struct to remove directories
+struct DirectoryRemover {
+
+    /// Remove directory at the provided URL.
+    ///
+    /// - Parameters:
+    ///   - url: The URL of the directory to remove.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func remove(_ url: URL) async throws {
+
+        guard FileManager.default.fileExists(atPath: url.path) else {
+            return
+        }
+
+        let arguments: [String] = [url.path]
+        let client: XPCClient = XPCClient.forMachService(named: .helperIdentifier)
+        let request: HelperToolCommandRequest = HelperToolCommandRequest(type: .remove, arguments: arguments, environment: [:])
+        let response: HelperToolCommandResponse = try await client.sendMessage(request, to: XPCRoute.commandRoute)
+
+        guard response.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: response.terminationStatus, string: response.standardError)
+        }
+    }
+}

Mist/Helpers/DiskImageCreator.swift

@@ -0,0 +1,68 @@
+//
+//  DiskImageCreator.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to create disk images.
+struct DiskImageCreator {
+
+    /// Create an empty Disk Image of fixed size.
+    ///
+    /// - Parameters:
+    ///   - url:  The URL of the disk image to create.
+    ///   - size: The fixed size of the disk image.
+    ///
+    /// - Throws: An `MistError` if the command failed to execute.
+    static func create(_ url: URL, size: UInt64) async throws {
+
+        let arguments: [String] = [
+            "hdiutil", "create",
+            "-fs", "JHFS+",
+            "-layout", "SPUD",
+            "-size", "\(size)g",
+            "-volname", url.lastPathComponent.replacingOccurrences(of: ".dmg", with: ""),
+            url.path
+        ]
+        try await create(url, with: arguments)
+    }
+
+    /// Create a Disk Image (with dynamic size) containing the contents of a source directory.
+    ///
+    /// - Parameters:
+    ///   - url:    The URL of the disk image to create.
+    ///   - source: The URL of the source directory.
+    ///
+    /// - Throws: An `MistError` if the command failed to execute.
+    static func create(_ url: URL, from source: URL) async throws {
+
+        let arguments: [String] = [
+            "hdiutil", "create",
+            "-fs", "HFS+",
+            "-srcFolder", source.path,
+            "-volname", url.lastPathComponent.replacingOccurrences(of: ".dmg", with: ""),
+            url.path
+        ]
+        try await create(url, with: arguments)
+    }
+
+    /// Create a Disk Image based in supplied commandline arguments.
+    ///
+    /// - Parameters:
+    ///   - url:       The URL of the disk image to create.
+    ///   - arguments: A list of commandline arguments passed to the shell operation used to create the disk image.
+    ///
+    /// - Throws: An `MistError` if the command failed to execute.
+    private static func create(_ url: URL, with arguments: [String]) async throws {
+
+        try await DirectoryRemover.remove(url)
+        let result: (terminationStatus: Int32, standardOutput: String?, standardError: String?) = try ShellExecutor.shared.execute(arguments)
+
+        guard result.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: result.terminationStatus, string: result.standardError)
+        }
+    }
+}

Mist/Helpers/DiskImageMounter.swift

@@ -0,0 +1,35 @@
+//
+//  DiskImageMounter.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to mount Disk Images.
+struct DiskImageMounter {
+
+    /// Mount a Disk Image at the provided mount point.
+    ///
+    /// - Parameters:
+    ///   - url:        The URL of the disk image to mount.
+    ///   - mountPoint: The URL of the directory mount point.
+    ///
+    /// - Throws: A `MistError` if the command failed to execute.
+    static func mount(_ url: URL, mountPoint: URL) async throws {
+
+        do {
+            try await DiskImageUnmounter.unmount(mountPoint)
+        } catch {
+            // do nothing
+        }
+
+        let arguments: [String] = ["hdiutil", "attach", url.path, "-noverify", "-mountpoint", mountPoint.path]
+        let result: (terminationStatus: Int32, standardOutput: String?, standardError: String?) = try ShellExecutor.shared.execute(arguments)
+
+        guard result.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: result.terminationStatus, string: result.standardError)
+        }
+    }
+}

Mist/Helpers/DiskImageUnmounter.swift

@@ -0,0 +1,27 @@
+//
+//  DiskImageUnmounter.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to unmount Disk Images.
+struct DiskImageUnmounter {
+
+    /// Unmount a Disk Image at the provided mount point.
+    ///
+    /// - Parameters:
+    ///   - url: The URL of the directory mount point.
+    ///
+    /// - Throws: A `MistError` if the command failed to execute.
+    static func unmount(_ url: URL) async throws {
+        let arguments: [String] = ["hdiutil", "detach", url.path, "-force"]
+        let result: (terminationStatus: Int32, standardOutput: String?, standardError: String?) = try ShellExecutor.shared.execute(arguments)
+
+        guard result.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: result.terminationStatus, string: result.standardError)
+        }
+    }
+}

Mist/Helpers/DownloadManager.swift

@@ -0,0 +1,105 @@
+//
+//  DownloadManager.swift
+//  Mist
+//
+//  Created by Nindi Gill on 23/6/2022.
+//
+
+import Foundation
+
+class DownloadManager: NSObject, ObservableObject {
+
+    static let shared: DownloadManager = DownloadManager()
+    private var task: URLSessionDownloadTask?
+    private var progress: Progress = Progress()
+    var currentValue: Double {
+        progress.fractionCompleted
+    }
+
+    func download(_ url: URL, to destination: URL, retries retriesMaximum: Int, delay retryDelay: Int) async throws {
+
+        guard !FileManager.default.fileExists(atPath: destination.path) else {
+            return
+        }
+
+        let semaphore: DispatchSemaphore = DispatchSemaphore(value: 0)
+        var mistError: MistError?
+        var urlError: URLError?
+        var retries: Int = 0
+        let completionHandler: (URL?, URLResponse?, Error?) -> Void = { url, _, error in
+
+            if let error: URLError = error as? URLError {
+
+                guard error.code != .cancelled else {
+                    mistError = .userCancelled
+                    semaphore.signal()
+                    return
+                }
+
+                urlError = error
+                semaphore.signal()
+                return
+            }
+
+            if let error: Error = error {
+                mistError = MistError.generalError(error.localizedDescription)
+                semaphore.signal()
+                return
+            }
+
+            guard let url: URL = url else {
+                mistError = MistError.invalidDestinationURL
+                semaphore.signal()
+                return
+            }
+
+            do {
+                if FileManager.default.fileExists(atPath: destination.path) {
+                    try FileManager.default.removeItem(at: destination)
+                }
+
+                try FileManager.default.moveItem(at: url, to: destination)
+            } catch {
+                mistError = MistError.generalError(error.localizedDescription)
+            }
+
+            semaphore.signal()
+        }
+
+        while mistError == nil {
+
+            guard retries < retriesMaximum else {
+                throw MistError.maximumRetriesReached
+            }
+
+            if let error: URLError = urlError {
+
+                guard let data: Data = error.downloadTaskResumeData else {
+                    throw MistError.invalidDownloadResumeData
+                }
+
+                sleep(UInt32(retryDelay))
+                retries += 1
+                task = URLSession.shared.downloadTask(withResumeData: data, completionHandler: completionHandler)
+            } else {
+                task = URLSession.shared.downloadTask(with: url, completionHandler: completionHandler)
+            }
+
+            if let task: URLSessionDownloadTask = task {
+                progress = task.progress
+            }
+
+            urlError = nil
+            task?.resume()
+            semaphore.wait()
+        }
+
+        if let mistError: MistError = mistError {
+            throw mistError
+        }
+    }
+
+    func cancelTask() {
+        task?.cancel()
+    }
+}

Mist/Helpers/FileCompressor.swift

@@ -0,0 +1,30 @@
+//
+//  FileCompressor.swift
+//  Mist
+//
+//  Created by Nindi Gill on 22/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to create Zip archives.
+struct FileCompressor {
+
+    /// Compress a file or the contents of a directory.
+    ///
+    /// - Parameters:
+    ///   - url:         The URL of the file or directory to be compressed.
+    ///   - destination: The URL of the Zip file to be created.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func compress(_ url: URL, to destination: URL) async throws {
+        try await DirectoryRemover.remove(destination)
+
+        let arguments: [String] = ["ditto", "-c", "-k", "--keepParent", "--sequesterRsrc", "--zlibCompressionLevel", "0", url.path, destination.path]
+        let result: (terminationStatus: Int32, standardOutput: String?, standardError: String?) = try ShellExecutor.shared.execute(arguments)
+
+        guard result.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: result.terminationStatus, string: result.standardError)
+        }
+    }
+}

Mist/Helpers/FileCopier.swift

@@ -0,0 +1,24 @@
+//
+//  FileCopier.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to copy files.
+struct FileCopier {
+
+    /// Copy a file from one location to another.
+    ///
+    /// - Parameters:
+    ///   - source:      The URL of the file to copy.
+    ///   - destination: The destination URL.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func copy(_ source: URL, to destination: URL) async throws {
+        try await DirectoryRemover.remove(destination)
+        try FileManager.default.copyItem(at: source, to: destination)
+    }
+}

Mist/Helpers/FileCreator.swift

@@ -0,0 +1,26 @@
+//
+//  FileCreator.swift
+//  Mist
+//
+//  Created by Nindi Gill on 22/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to create files with textual content.
+struct FileCreator {
+
+    /// Create a file with the provided string and POSIX permissions.
+    ///
+    /// - Parameters:
+    ///   - url:         The URL of the file to create.
+    ///   - contents:    The string to write to disk.
+    ///   - permissions: The POSIX permissions to apply to the file being created.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func create(_ url: URL, contents: String, permissions: Int) async throws {
+        try await DirectoryRemover.remove(url)
+        try contents.write(to: url, atomically: true, encoding: .utf8)
+        try FileManager.default.setAttributes([.posixPermissions: permissions], ofItemAtPath: url.path)
+    }
+}

Mist/Helpers/FileMover.swift

@@ -0,0 +1,24 @@
+//
+//  FileMover.swift
+//  Mist
+//
+//  Created by Nindi Gill on 20/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to move files.
+struct FileMover {
+
+    /// Move a file from one location to another.
+    ///
+    /// - Parameters:
+    ///   - source:      The URL of the file to move.
+    ///   - destination: The destination URL.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func move(_ source: URL, to destination: URL) async throws {
+        try await DirectoryRemover.remove(destination)
+        try FileManager.default.moveItem(at: source, to: destination)
+    }
+}

Mist/Helpers/FileSplitter.swift

@@ -0,0 +1,57 @@
+//
+//  FileSplitter.swift
+//  Mist
+//
+//  Created by Nindi Gill on 22/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to split files into chunks.
+struct FileSplitter {
+
+    /// Split a file into chunks with the provided filename prefix.
+    ///
+    /// - Parameters:
+    ///   - url:              The URL of the file to be split.
+    ///   - currentDirectory: The directory in which to create the split files.
+    ///   - prefix:           The filename prefix for the split files.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func split(_ url: URL, from currentDirectory: URL, prefix: String) async throws {
+        let fileSize: UInt64 = try url.fileSize()
+        let factor: UInt64 = 100
+        let chunkSize: UInt64 = 1_024 * 1_024 * factor // 100 MB
+        let totalFileChunks: UInt64 = UInt64(ceil(Double(fileSize) / Double(chunkSize)))
+        let standardFileChunks: UInt64 = 8_000 / factor // 8000 MB
+        let lastFileChunks: UInt64 = totalFileChunks % standardFileChunks
+        let numberOfFiles: Int = Int(ceil((Double(totalFileChunks) / Double(standardFileChunks))))
+        let readHandle: FileHandle = try FileHandle(forReadingFrom: url)
+
+        for file in 0..<numberOfFiles {
+            let isLastFile: Bool = file == numberOfFiles - 1
+            let numberOfChunks: UInt64 = isLastFile ? lastFileChunks : standardFileChunks
+            let destination: URL = currentDirectory.appendingPathComponent("\(prefix)\(file)")
+            try await DirectoryRemover.remove(destination)
+            try Data().write(to: destination)
+            let writeHandle: FileHandle = try FileHandle(forWritingTo: destination)
+            var writeOffset: UInt64 = 0
+
+            for chunk in 0..<numberOfChunks {
+                try Task.checkCancellation()
+                try autoreleasepool {
+                    let readOffset: UInt64 = UInt64(file) * standardFileChunks * chunkSize + UInt64(chunk) * chunkSize
+                    try readHandle.seek(toOffset: readOffset)
+                    try writeHandle.seek(toOffset: writeOffset)
+                    let data: Data = readHandle.readData(ofLength: Int(chunkSize))
+                    try writeHandle.write(contentsOf: data)
+                    writeOffset += chunkSize
+                }
+            }
+
+            try writeHandle.close()
+        }
+
+        readHandle.closeFile()
+    }
+}

Mist/Helpers/ISOConverter.swift

@@ -0,0 +1,28 @@
+//
+//  ISOConverter.swift
+//  Mist
+//
+//  Created by Nindi Gill on 22/6/2022.
+//
+
+import Foundation
+
+/// Helper struct to convert Disk Images to ISOs.
+struct ISOConverter {
+
+    /// Convert a Disk Image to an ISO.
+    ///
+    /// - Parameters:
+    ///   - source:      The URL of the Disk Image to be converted.
+    ///   - destination: The URL of the ISO to be created.
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func convert(_ source: URL, destination: URL) async throws {
+        let arguments: [String] = ["hdiutil", "convert", source.path, "-format", "UDTO", "-o", destination.path]
+        let result: (terminationStatus: Int32, standardOutput: String?, standardError: String?) = try ShellExecutor.shared.execute(arguments)
+
+        guard result.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: result.terminationStatus, string: result.standardError)
+        }
+    }
+}

Mist/Helpers/InstallMediaCreator.swift

@@ -0,0 +1,31 @@
+//
+//  InstallMediaCreator.swift
+//  Mist
+//
+//  Created by Nindi Gill on 22/6/2022.
+//
+
+import Foundation
+import SecureXPC
+
+/// Helper struct to execute the `createinstallmedia` command found in macOS Install app bundles.
+struct InstallMediaCreator {
+
+    /// Create the macOS Install Media at the specified mount point.
+    ///
+    /// - Parameters:
+    ///   - url:        The URL of the `createinstallmedia` binary to execute.
+    ///   - mountPoint: The URL of the mount point (target volume).
+    ///
+    /// - Throws: An `Error` if the command failed to execute.
+    static func create(_ url: URL, mountPoint: URL) async throws {
+        let arguments: [String] = [url.path, "--volume", mountPoint.path, "--nointeraction"]
+        let client: XPCClient = XPCClient.forMachService(named: .helperIdentifier)
+        let request: HelperToolCommandRequest = HelperToolCommandRequest(type: .createinstallmedia, arguments: arguments, environment: [:])
+        let response: HelperToolCommandResponse = try await client.sendMessage(request, to: XPCRoute.commandRoute)
+
+        guard response.terminationStatus == 0 else {
+            throw MistError.invalidTerminationStatus(status: response.terminationStatus, string: response.standardError)
+        }
+    }
+}

Mist/Helpers/InstallerCreator.swift

@@ -0,0 +1,54 @@
+//
+//  InstallerCreator.swift
+//  Mist
+//
+//  Created by Nindi Gill on 21/6/2022.
+//
+
+import Foundation
+import SecureXPC
+
+/// Helper Struct used to create macOS Installers.
+struct InstallerCreator {
+
+    /// Creates a recently downloaded macOS Installer.
+    ///
+    /// - Parameters:
+    ///   - installer:  The selected macOS Installer that was downloaded.
+    ///   - mountPoint: The URL of the directory mount point.
+    ///
+    /// - Throws: A `MistError` if the downloaded macOS Installer fails to generate.
+    static func create(_ installer: Installer, mountPoint: URL) async throws {
+
+        guard let url: URL = URL(string: installer.distributionURL) else {
+            throw MistError.invalidURL(installer.distributionURL)
+        }
+
+        try await DirectoryRemover.remove(installer.temporaryInstallerURL)
+
+        let cacheDirectoryURL: URL = URL(fileURLWithPath: .cacheDirectory)
+        let distributionURL: URL = cacheDirectoryURL.appendingPathComponent(installer.id).appendingPathComponent(url.lastPathComponent)
+        var argumentsArrays: [[String]] = [
+            ["installer", "-pkg", distributionURL.path, "-target", mountPoint.path]
+        ]
+
+        if installer.catalinaOrNewer {
+            argumentsArrays += [
+                ["ditto", "\(mountPoint.path)Applications", "\(mountPoint.path)/Applications"],
+                ["rm", "-r", "\(mountPoint.path)Applications"]
+            ]
+        }
+
+        let variables: [String: String] = ["CM_BUILD": "CM_BUILD"]
+        let client: XPCClient = XPCClient.forMachService(named: .helperIdentifier)
+
+        for arguments in argumentsArrays {
+            let request: HelperToolCommandRequest = HelperToolCommandRequest(type: .installer, arguments: arguments, environment: variables)
+            let response: HelperToolCommandResponse = try await client.sendMessage(request, to: XPCRoute.commandRoute)
+
+            guard response.terminationStatus == 0 else {
+                throw MistError.invalidTerminationStatus(status: response.terminationStatus, string: response.standardError)
+            }
+        }
+    }
+}