Settings: Have a toggle for using an integration manager

#2843

Riot/Managers/Settings/Shared/JSONModels/RiotSettingAllowedWidgets.swift

@@ -26,11 +26,4 @@ extension RiotSettingAllowedWidgets: Decodable {
     enum CodingKeys: String, CodingKey {
         case widgets
     }
-
-    init(from decoder: Decoder) throws {
-        let container = try decoder.container(keyedBy: CodingKeys.self)
-        let widgets = try container.decode([String: Bool].self, forKey: .widgets)
-
-        self.init(widgets: widgets)
-    }
 }

Riot/Managers/Settings/Shared/JSONModels/RiotSettingIntegrationProvisioning.swift

@@ -0,0 +1,29 @@
+/*
+ Copyright 2019 New Vector Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import Foundation
+
+/// Model for "im.vector.setting.integration_provisioning"
+/// https://github.com/vector-im/riot-meta/blob/master/spec/settings.md#selecting-no-provisioning-for-integration-managers
+struct RiotSettingIntegrationProvisioning {
+    let enabled: Bool
+}
+
+extension RiotSettingIntegrationProvisioning: Decodable {
+    enum CodingKeys: String, CodingKey {
+        case enabled
+    }
+}

Riot/Managers/Settings/Shared/RiotSharedSettings.swift

@@ -52,6 +52,39 @@ class RiotSharedSettings: NSObject {
 
     // MARK: - Public
 
+    // MARK: Integration provisioning
+
+    func hasIntegrationProvisioningEnabled() -> Bool {
+        return getIntegrationProvisioning()?.enabled ?? true
+    }
+
+    func getIntegrationProvisioning() -> RiotSettingIntegrationProvisioning? {
+        guard let integrationProvisioningDict = getAccountData(forEventType: Settings.integrationProvisioning) else {
+            return nil
+        }
+
+        do {
+            let integrationProvisioning: RiotSettingIntegrationProvisioning = try serializationService.deserialize(integrationProvisioningDict)
+            return integrationProvisioning
+        } catch {
+            return nil
+        }
+    }
+
+    @discardableResult
+    func setIntegrationProvisioning(enabled: Bool,
+                                    success: @escaping () -> Void,
+                                    failure: @escaping (Error?) -> Void)
+        -> MXHTTPOperation? {
+
+        // Update only the "widgets" field in the account data
+        var integrationProvisioningDict = getAccountData(forEventType: Settings.integrationProvisioning) ?? [:]
+        integrationProvisioningDict[RiotSettingIntegrationProvisioning.CodingKeys.enabled.rawValue] = enabled
+
+        return session.setAccountData(integrationProvisioningDict, forType: Settings.integrationProvisioning, success: success, failure: failure)
+    }
+
+
     // MARK: Allowed widgets
     func permission(for widget: Widget) -> WidgetPermission {
         guard let allowedWidgets = getAllowedWidgets() else {
@@ -74,7 +107,8 @@ class RiotSharedSettings: NSObject {
         }
     }
 
-    @discardableResult func setPermission(_ permission: WidgetPermission,
+    @discardableResult
+    func setPermission(_ permission: WidgetPermission,
                                           for widget: Widget,
                                           success: @escaping () -> Void,
                                           failure: @escaping (Error?) -> Void)