Merge pull request #50 in BPHVB/mvm_core from feature/template to develop

* commit 'ae1362ad7acf51775697c97b59bfe5e362b463a8':
  Convenience for setting up session and core object
  default presentation view controller. Re-use function
  remove old code
  fix to class check for nil convenience functions init functions

MVMCore/MVMCore/ActionHandling/MVMCoreActionHandler.m

@@ -36,8 +36,7 @@ NSString * const KeyActionTypeOpen = @"openPage";
 @implementation MVMCoreActionHandler
 
 + (nullable instancetype)sharedActionHandler {
-    [MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].actionHandler.class otherClass:self throwException:YES];
-    return [MVMCoreObject sharedInstance].actionHandler;
+    return [MVMCoreActionUtility initializerClassCheck:[MVMCoreObject sharedInstance].actionHandler classToVerify:self];
 }
 
 - (void)handleActionWithDictionary:(nullable NSDictionary *)dictionary additionalData:(nullable NSDictionary *)additionalData delegate:(nullable NSObject <MVMCoreLoadDelegateProtocol, MVMCorePresentationDelegateProtocol,MVMCoreActionDelegateProtocol>*)delegate {

MVMCore/MVMCore/MainProtocols/MVMCoreGlobalLoadProtocol.h

@@ -14,11 +14,11 @@
 
 @protocol  MVMCoreGlobalLoadProtocol <NSObject>
 
-// Provides the desired error screen for the native error. If null, will fail silently. Called on the main thread.
-- (nullable UIViewController <MVMCoreViewControllerProtocol> *)getNativeScreenForRequestError:(nonnull MVMCoreErrorObject *)errorObject requestObject:(nonnull MVMCoreRequestParameters *)requestObject;
-
 @optional
 
+// Provides the desired error screen for the native error. Called on the main thread. If set, any native errors or NSURLErrorDomain errors will use a native screen.
+- (nullable UIViewController <MVMCoreViewControllerProtocol> *)getNativeScreenForRequestError:(nonnull MVMCoreErrorObject *)errorObject requestObject:(nonnull MVMCoreRequestParameters *)requestObject;
+
 /* Can choose to handle global error scenarios here... This will happen for every request so only put things in here that aren't controller specific. Must call completion handler.
  @param completionHandler must be called when finished handling errors. Pass if we should continue or not, and any error object that you want to be handled. */
 - (void)handleGlobalErrorsForLoadObject:(nonnull MVMCoreLoadObject *)loadObject completionHandler:(nonnull void (^)(BOOL shouldContinueLoad, MVMCoreErrorObject * _Nullable error))completionHandler;

MVMCore/MVMCore/OtherHandlers/MVMCoreCache.m

@@ -42,8 +42,7 @@
 static NSString * const STATIC_CACHE_COMPONENT = @"StaticCache.txt";
 
 + (nullable instancetype)sharedCache {
-    [MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].cache.class otherClass:self throwException:YES];
-    return [MVMCoreObject sharedInstance].cache;
+    return [MVMCoreActionUtility initializerClassCheck:[MVMCoreObject sharedInstance].cache classToVerify:self];
 }
 
 - (nullable instancetype)init {

MVMCore/MVMCore/OtherHandlers/MVMCoreLoggingHandler.h

@@ -10,12 +10,13 @@
 #import <MVMCore/MVMCoreErrorObject.h>
 #import <MVMCore/MVMCoreViewControllerProtocol.h>
 #import <MVMCore/MVMCoreLoadObject.h>
+#import <MVMCore/MVMCoreLoggingDelegateProtocol.h>
 @class MVMCoreAlertController;
 
 #define MVMCoreLog(fmt, ...) \
 [MVMCoreLoggingHandler logDebugMessageWithDelegate:[NSString stringWithFormat:(@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__]];
 
-@interface MVMCoreLoggingHandler : NSObject
+@interface MVMCoreLoggingHandler : NSObject <MVMCoreLoggingDelegateProtocol>
 
 + (nullable instancetype)sharedLoggingHandler;
 

MVMCore/MVMCore/OtherHandlers/MVMCoreLoggingHandler.m

@@ -13,7 +13,7 @@
 @implementation MVMCoreLoggingHandler
 
 + (nullable instancetype)sharedLoggingHandler {
-    if ([MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].loggingDelegate.class otherClass:self throwException:NO]) {
+    if ([MVMCoreObject sharedInstance].loggingDelegate && [MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].loggingDelegate.class otherClass:self throwException:NO]) {
         return (MVMCoreLoggingHandler *)[MVMCoreObject sharedInstance].loggingDelegate;
     } else {
         return nil;
@@ -50,5 +50,12 @@
     }
 }
 
+#pragma mark - logging delegate
+
+- (void)handleDebugMessage:(nullable NSString *)message {
+#ifdef DEBUG
+    NSLog(@"%@", message);
+#endif
+}
 
 @end

MVMCore/MVMCore/PresentationHandling/MVMCoreNavigationHandler.m

@@ -276,12 +276,13 @@
 
 - (void)presentViewController:(nonnull UIViewController *)viewController animated:(BOOL)animated delegate:(nullable NSObject<MVMCorePresentationDelegateProtocol>*)delegate completionHandler:(nullable void (^)(void))completionBlock {
     
-    if (!self.viewControllerToPresentOn) {
+    UIViewController *controllerToPresentOn = self.viewControllerToPresentOn ?: [UIApplication sharedApplication].keyWindow.rootViewController;
+    if (!controllerToPresentOn) {
         // Log if we are attempting to add an alert to nothing.
         MVMCoreErrorObject *error = [[MVMCoreErrorObject alloc] initWithTitle:nil message:@"The viewControllerToPresent on property is nil and an attempt was made to present." code:ErrorCodeNoViewControllerToPresentOn domain:ErrorDomainNative location:[NSString stringWithFormat:@"ViewController:%@|Delegate:%@",viewController.description,delegate]];
         [MVMCoreLoggingHandler addErrorToLog:error];
     } else {
-        MVMCorePresentViewControllerOperation *operation = [[MVMCorePresentViewControllerOperation alloc] initWithPresentingViewController:self.viewControllerToPresentOn presentedViewController:viewController animated:animated];
+        MVMCorePresentViewControllerOperation *operation = [[MVMCorePresentViewControllerOperation alloc] initWithPresentingViewController:controllerToPresentOn presentedViewController:viewController animated:animated];
         operation.delegate = delegate;
         operation.completionBlock = completionBlock;
         [self.presentationQueue addOperation:operation];

MVMCore/MVMCore/Session/MVMCoreSessionObject.h

@@ -26,6 +26,9 @@
 // Returns the shared instance of this singleton
 + (nullable instancetype)sharedGlobal;
 
+// Creates the nsurlsession with default configuration and no delegate. Can subclass for different session.
+- (nonnull NSURLSession *)createNSURLSession;
+
 // Gets inital parameters for request parameters.
 - (nullable NSDictionary *)getInitialParameters;
 // Gets inital parameters for request parameters excluding any items given a list of key names.
@@ -37,7 +40,7 @@
 // Redirect, leaving the current app experience.
 - (void)redirectWithInfo:(nullable NSDictionary *)dictionary;
 
-// Clears the session singleton.
+// Clears the session singleton. Creates a new session NSURLSession also.
 - (void)clearSessionObject;
 
 @end

MVMCore/MVMCore/Session/MVMCoreSessionObject.m

@@ -12,9 +12,19 @@
 
 @implementation MVMCoreSessionObject
 
+- (instancetype)init {
+    if (self = [super init]) {
+        self.session = [self createNSURLSession];
+    }
+    return self;
+}
+
 + (nullable instancetype)sharedGlobal {
-    [MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].session.class otherClass:self throwException:YES];
-    return [MVMCoreObject sharedInstance].session;
+    return [MVMCoreActionUtility initializerClassCheck:[MVMCoreObject sharedInstance].session classToVerify:self];
+}
+
+- (nonnull NSURLSession *)createNSURLSession {
+    return [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:nil delegateQueue:nil];
 }
 
 - (nullable NSDictionary *)getInitialParameters {
@@ -37,6 +47,8 @@
 }
 
 - (void)clearSessionObject {
+    [self.session invalidateAndCancel];
+    self.session = [self createNSURLSession];
 }
 
 @end

MVMCore/MVMCore/Session/MVMCoreSessionTimeHandler.m

@@ -47,8 +47,7 @@
 @implementation MVMCoreSessionTimeHandler
 
 + (nullable instancetype)sharedSessionHandler {
-    [MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].sessionHandler.class otherClass:self throwException:YES];
-    return [MVMCoreObject sharedInstance].sessionHandler;
+    return [MVMCoreActionUtility initializerClassCheck:[MVMCoreObject sharedInstance].sessionHandler classToVerify:self];
 }
 
 - (instancetype)init {

MVMCore/MVMCore/Singletons/MVMCoreObject.h

@@ -27,10 +27,10 @@
 @property (nullable, strong, nonatomic) MVMCoreSessionTimeHandler *sessionHandler;
 
 // The delegates
-@property (nullable, weak, nonatomic) id <MVMCoreGlobalLoadProtocol> globalLoadDelegate;
-@property (nullable, weak, nonatomic) id <MVMCoreLoadingOverlayDelegateProtocol> loadingProtocol;
-@property (nullable, weak, nonatomic) NSObject <MVMCoreLoggingDelegateProtocol> *loggingDelegate;
-@property (nullable, weak, nonatomic) id <MVMCoreGlobalTopAlertDelegateProtocol> globalTopAlertDelegate;
+@property (nullable, strong, nonatomic) id <MVMCoreGlobalLoadProtocol> globalLoadDelegate;
+@property (nullable, strong, nonatomic) id <MVMCoreLoadingOverlayDelegateProtocol> loadingProtocol;
+@property (nullable, strong, nonatomic) NSObject <MVMCoreLoggingDelegateProtocol> *loggingDelegate;
+@property (nullable, strong, nonatomic) id <MVMCoreGlobalTopAlertDelegateProtocol> globalTopAlertDelegate;
 
 // A reference to the calling application delegate that should be set. For a normal app, could be the UIApplicationDelegate. For watch, could be WKExtensionDelegate. For iMessage, could be MSMessagesAppViewController. etc, etc. Useful for the framework to call delegate specific functions.
 @property (nullable, weak, nonatomic) id applicationDelegate;
@@ -38,4 +38,7 @@
 // A singleton.
 + (nullable instancetype)sharedInstance;
 
+// Sets up with a default session, cache, view controller mapping, action handler, session handler, and logging delegate.
+- (void)defaultInitialSetup;
+
 @end

MVMCore/MVMCore/Singletons/MVMCoreObject.m

@@ -19,4 +19,13 @@
     return sharedInstance;
 }
 
+- (void)defaultInitialSetup {
+    self.session = [[MVMCoreSessionObject alloc] init];
+    self.cache = [[MVMCoreCache alloc] init];
+    self.viewControllerMapping = [[MVMCoreViewControllerMappingObject alloc] init];
+    self.sessionHandler = [[MVMCoreSessionTimeHandler alloc] init];
+    self.actionHandler = [[MVMCoreActionHandler alloc] init];
+    self.loggingDelegate = [[MVMCoreLoggingHandler alloc] init];
+}
+
 @end

MVMCore/MVMCore/Utility/Helpers/MVMCoreActionUtility.h

@@ -26,4 +26,7 @@
 // returns if the class is not the same or a subclass of the other class. Can pass throw an exception as well
 + (BOOL)classIsInstanceTypeOfClass:(Class)theClass otherClass:(Class)otherClass throwException:(BOOL)throwException;
 
+// Calls the above function with throw exception yes if the object is not nil. Returns the object. Convenience function for one liner in initializer.
++ (id)initializerClassCheck:(nullable NSObject *)object classToVerify:(Class)classToVerify;
+
 @end

MVMCore/MVMCore/Utility/Helpers/MVMCoreActionUtility.m

@@ -101,14 +101,7 @@
 }
 
 + (void)openURL:(nullable NSURL *)url completionHandler:(void (^ __nullable)(BOOL success))completion{
-    if (@available(iOS 10.0, *)) {
-        [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:completion];
-    } else {
-        BOOL successful = [[UIApplication sharedApplication] openURL:url];
-        if (completion != nil){
-            completion(successful);
-        }
-    }
+    [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:completion];
 }
 
 + (void)displayViewController:(nonnull UIViewController <MVMCoreViewControllerProtocol> *)viewController forLoadObject:(nullable MVMCoreLoadObject *)loadObject presentationDelegate:(nullable NSObject<MVMCorePresentationDelegateProtocol>*)delegate completionHandler:(nullable void (^)(void))completionBlock {
@@ -147,4 +140,11 @@
     return YES;
 }
 
++ (id)initializerClassCheck:(nullable NSObject *)object classToVerify:(Class)classToVerify {
+    if (object) {
+        [self classIsInstanceTypeOfClass:object.class otherClass:classToVerify throwException:YES];
+    }
+    return object;
+}
+
 @end

MVMCore/MVMCore/Utility/MVMCoreErrorObject.m

@@ -7,6 +7,7 @@
 //
 
 #import "MVMCoreErrorObject.h"
+#import "MVMCoreObject.h"
 #import "MVMCoreErrorConstants.h"
 #import "MVMCoreGetterUtility.h"
 #import "NSDictionary+MFConvenience.h"
@@ -32,8 +33,10 @@
             self.logError = YES;
             
             // Native and system errors have an error screen.
-            self.errorScreenError = YES;
-            self.nativeDrivenErrorScreen = YES;
+            if ([[MVMCoreObject sharedInstance].globalLoadDelegate respondsToSelector:@selector(getNativeScreenForRequestError:requestObject:)]) {
+                self.errorScreenError = YES;
+                self.nativeDrivenErrorScreen = YES;
+            }
         } else {
             self.logError = NO;
         }
@@ -58,8 +61,10 @@
             self.logError = YES;
             
             // Native and system errors have an error screen.
-            self.errorScreenError = YES;
-            self.nativeDrivenErrorScreen = YES;
+            if ([[MVMCoreObject sharedInstance].globalLoadDelegate respondsToSelector:@selector(getNativeScreenForRequestError:requestObject:)]) {
+                self.errorScreenError = YES;
+                self.nativeDrivenErrorScreen = YES;
+            }
         } else {
             self.logError = NO;
         }
@@ -98,9 +103,11 @@
     
     MVMCoreErrorObject *errorObject = [[MVMCoreErrorObject alloc] initWithTitle:[MVMCoreGetterUtility hardcodedStringWithKey:HardcodedErrorTitle] message:[error localizedDescription] code:[error code] domain:ErrorDomainSystem location:location];
     if ([error.domain isEqualToString:NSURLErrorDomain]) {
-        errorObject.errorScreenError = YES;
-        errorObject.nativeDrivenErrorScreen = YES;
         errorObject.systemDomain = error.domain;
+        if ([[MVMCoreObject sharedInstance].globalLoadDelegate respondsToSelector:@selector(getNativeScreenForRequestError:requestObject:)]) {
+            errorObject.errorScreenError = YES;
+            errorObject.nativeDrivenErrorScreen = YES;
+        }
     }
     return errorObject;
 }

MVMCore/MVMCore/ViewControllerMapping/MVMCoreViewControllerMappingObject.m

@@ -27,8 +27,7 @@
 @implementation MVMCoreViewControllerMappingObject
 
 + (nullable instancetype)sharedViewControllerMappingObject {
-    [MVMCoreActionUtility classIsInstanceTypeOfClass:[MVMCoreObject sharedInstance].viewControllerMapping.class otherClass:self throwException:YES];
-    return [MVMCoreObject sharedInstance].viewControllerMapping;
+    return [MVMCoreActionUtility initializerClassCheck:[MVMCoreObject sharedInstance].viewControllerMapping classToVerify:self];
 }
 
 #pragma mark - View Controller Mapping