[AltStore] Adds redesigned AppViewController to view/download AltStore apps

AltStore/Model/AltStore.xcdatamodeld/AltStore.xcdatamodel/contents

@@ -27,12 +27,18 @@
         <attribute name="versionDate" attributeType="Date" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="versionDescription" optional="YES" attributeType="String" syncable="YES"/>
         <relationship name="installedApp" optional="YES" maxCount="1" deletionRule="Nullify" destinationEntity="InstalledApp" inverseName="app" inverseEntity="InstalledApp" syncable="YES"/>
+        <relationship name="permissions" toMany="YES" deletionRule="Cascade" ordered="YES" destinationEntity="AppPermission" inverseName="app" inverseEntity="AppPermission" syncable="YES"/>
         <uniquenessConstraints>
             <uniquenessConstraint>
                 <constraint value="identifier"/>
             </uniquenessConstraint>
         </uniquenessConstraints>
     </entity>
+    <entity name="AppPermission" representedClassName="AppPermission" syncable="YES">
+        <attribute name="type" attributeType="String" syncable="YES"/>
+        <attribute name="usageDescription" attributeType="String" syncable="YES"/>
+        <relationship name="app" optional="YES" maxCount="1" deletionRule="Nullify" destinationEntity="App" inverseName="permissions" inverseEntity="App" syncable="YES"/>
+    </entity>
     <entity name="InstalledApp" representedClassName="InstalledApp" syncable="YES">
         <attribute name="bundleIdentifier" attributeType="String" syncable="YES"/>
         <attribute name="expirationDate" attributeType="Date" usesScalarValueType="NO" syncable="YES"/>
@@ -59,8 +65,9 @@
     </entity>
     <elements>
         <element name="Account" positionX="-36" positionY="90" width="128" height="135"/>
-        <element name="App" positionX="-63" positionY="-18" width="128" height="240"/>
+        <element name="App" positionX="-63" positionY="-18" width="128" height="255"/>
         <element name="InstalledApp" positionX="-63" positionY="0" width="128" height="120"/>
         <element name="Team" positionX="-45" positionY="81" width="128" height="120"/>
+        <element name="AppPermission" positionX="-45" positionY="90" width="128" height="90"/>
     </elements>
 </model>

AltStore/Model/App.swift

@@ -39,6 +39,11 @@ class App: NSManagedObject, Decodable, Fetchable
     
     /* Relationships */
     @NSManaged private(set) var installedApp: InstalledApp?
+    @objc(permissions) @NSManaged var _permissions: NSOrderedSet
+    
+    @nonobjc var permissions: [AppPermission] {
+        return self._permissions.array as! [AppPermission]
+    }
     
     private override init(entity: NSEntityDescription, insertInto context: NSManagedObjectContext?)
     {
@@ -59,6 +64,7 @@ class App: NSManagedObject, Decodable, Fetchable
         case downloadURL
         case tintColor
         case subtitle
+        case permissions
     }
     
     required init(from decoder: Decoder) throws
@@ -93,7 +99,12 @@ class App: NSManagedObject, Decodable, Fetchable
             self.tintColor = tintColor
         }
         
+        let permissions = try container.decodeIfPresent([AppPermission].self, forKey: .permissions) ?? []
+        
         context.insert(self)
+        
+        // Must assign after we're inserted into context.
+        self._permissions = NSOrderedSet(array: permissions)
     }
 }
 

AltStore/Model/AppPermission.swift

@@ -0,0 +1,88 @@
+//
+//  AppPermission.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/23/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import CoreData
+import UIKit
+
+extension ALTAppPermissionType
+{
+    var localizedShortName: String? {
+        switch self
+        {
+        case .photos: return NSLocalizedString("Photos", comment: "")
+        case .backgroundAudio: return NSLocalizedString("Audio (BG)", comment: "")
+        case .backgroundFetch: return NSLocalizedString("Fetch (BG)", comment: "")
+        default: return nil
+        }
+    }
+    
+    var localizedName: String? {
+        switch self
+        {
+        case .photos: return NSLocalizedString("Photos", comment: "")
+        case .backgroundAudio: return NSLocalizedString("Background Audio", comment: "")
+        case .backgroundFetch: return NSLocalizedString("Background Fetch", comment: "")
+        default: return nil
+        }
+    }
+    
+    var icon: UIImage? {
+        switch self
+        {
+        case .photos: return UIImage(named: "PhotosPermission")
+        case .backgroundAudio: return UIImage(named: "BackgroundAudioPermission")
+        case .backgroundFetch: return UIImage(named: "BackgroundFetchPermission")
+        default: return nil
+        }
+    }
+}
+
+@objc(AppPermission)
+class AppPermission: NSManagedObject, Decodable, Fetchable
+{
+    /* Properties */
+    @NSManaged var type: ALTAppPermissionType
+    @NSManaged var usageDescription: String
+    
+    /* Relationships */
+    @NSManaged private(set) var app: App!
+    
+    private override init(entity: NSEntityDescription, insertInto context: NSManagedObjectContext?)
+    {
+        super.init(entity: entity, insertInto: context)
+    }
+    
+    private enum CodingKeys: String, CodingKey
+    {
+        case type
+        case usageDescription
+    }
+    
+    required init(from decoder: Decoder) throws
+    {
+        guard let context = decoder.managedObjectContext else { preconditionFailure("Decoder must have non-nil NSManagedObjectContext.") }
+        
+        super.init(entity: AppPermission.entity(), insertInto: nil)
+        
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.usageDescription = try container.decode(String.self, forKey: .usageDescription)
+        
+        let rawType = try container.decode(String.self, forKey: .type)
+        self.type = ALTAppPermissionType(rawValue: rawType)
+        
+        context.insert(self)
+    }
+}
+
+extension AppPermission
+{
+    @nonobjc class func fetchRequest() -> NSFetchRequest<AppPermission>
+    {
+        return NSFetchRequest<AppPermission>(entityName: "AppPermission")
+    }
+}

AltStore/Model/DatabaseManager.swift

@@ -22,6 +22,7 @@ public class DatabaseManager
     private init()
     {
         self.persistentContainer = RSTPersistentContainer(name: "AltStore")
+        self.persistentContainer.preferredMergePolicy = MergePolicy()
     }
 }
 

AltStore/Model/MergePolicy.swift

@@ -0,0 +1,39 @@
+//
+//  MergePolicy.swift
+//  AltStore
+//
+//  Created by Riley Testut on 7/23/19.
+//  Copyright © 2019 Riley Testut. All rights reserved.
+//
+
+import CoreData
+
+import Roxas
+
+open class MergePolicy: RSTRelationshipPreservingMergePolicy
+{
+    open override func resolve(constraintConflicts conflicts: [NSConstraintConflict]) throws
+    {
+        guard conflicts.allSatisfy({ $0.databaseObject != nil }) else {
+            assertionFailure("MergePolicy is only intended to work with database-level conflicts.")
+            return try super.resolve(constraintConflicts: conflicts)            
+        }
+        
+        for conflict in conflicts
+        {
+            switch conflict.databaseObject
+            {
+            case let databaseObject as App:
+                // Delete previous permissions
+                for permission in databaseObject.permissions
+                {
+                    permission.managedObjectContext?.delete(permission)
+                }
+                
+            default: break
+            }
+        }
+        
+        try super.resolve(constraintConflicts: conflicts)
+    }
+}