iOS improvements

- Recursively copy disks directory out of bundle to a R/W location in Documents directory
    - Allow background audio to play

Apple2Mac/Classes/iOS/AppDelegate.m

@@ -8,7 +8,8 @@
  * Copyright 2015 Aaron Culliney
  *
  */
- 
+
+#import <AVFoundation/AVFoundation.h>
 #import "AppDelegate.h"
 #import "EAGLView.h"
 #import "common.h"
@@ -19,7 +20,9 @@
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)options
 {    
-    // Override point for customization after application launch.
+    [self recursivelyCopyBundleResources];
+    
+    [self activateAudioSession];
     
     [self.window makeKeyAndVisible];
     
@@ -32,10 +35,7 @@
 
 - (void)applicationWillResignActive:(UIApplication *)application
 {
-    // Sent when the application is about to move from active to inactive state. This can occur for certain types of
-    // temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application
-    // and it begins the transition to the background state.  Use this method to pause ongoing tasks, disable timers,
-    // and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
+    [self deactivateAudioSession];
     EAGLView *view = (EAGLView *)self.window.rootViewController.view;
     [view pauseRendering];
     [view pauseEmulation];
@@ -43,18 +43,12 @@
 
 - (void)applicationDidEnterBackground:(UIApplication *)application
 {
-    // Use this method to release shared resources, save user data, invalidate timers, and store enough application
-    // state information to restore your application to its current state in case it is terminated later.  If your
-    // application supports background execution, called instead of applicationWillTerminate: when the user quits.
-    EAGLView *view = (EAGLView *)self.window.rootViewController.view;
-    [view pauseRendering];
-    [view pauseEmulation];
+    // ...
 }
 
 - (void)applicationWillEnterForeground:(UIApplication *)application
 {
-    // Called as part of transition from the background to the inactive state: here you can undo many of the changes
-    // made on entering the background.
+    [self activateAudioSession];
     EAGLView *view = (EAGLView *)self.window.rootViewController.view;
     [view resumeRendering];
     [view resumeEmulation];
@@ -62,16 +56,11 @@
 
 - (void)applicationDidBecomeActive:(UIApplication *)application 
 {
-    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application
-    // was previously in the background, optionally refresh the user interface.
-    EAGLView *view = (EAGLView *)self.window.rootViewController.view;
-    [view resumeRendering];
-    [view resumeEmulation];
+    // ...
 }
 
 - (void)applicationWillTerminate:(UIApplication *)application
 {
-    // Called when the application is about to terminate.  See also applicationDidEnterBackground:
     EAGLView *view = (EAGLView *)self.window.rootViewController.view;
     self.window.rootViewController.view = [[UIView alloc] init];
     
@@ -89,5 +78,103 @@
     LOG("...");
 }
 
+#pragma mark - resource management
+
+- (void)activateAudioSession
+{
+    NSError *error = nil;
+    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:&error];
+    if (error)
+    {
+        ERRLOG("Error setting AVAudioSessionCategoryAmbient : %s", [[error description] UTF8String]);
+        error = nil;
+    }
+    [[AVAudioSession sharedInstance] setActive:YES error:&error];
+    if (error)
+    {
+        ERRLOG("Error activating AVAudioSession : %s", [[error description] UTF8String]);
+        error = nil;
+    }
+}
+
+- (void)deactivateAudioSession
+{
+    NSError *error = nil;
+    [[AVAudioSession sharedInstance] setActive:NO error:&error];
+    if (error)
+    {
+        ERRLOG("Error deactivating AVAudioSession : %s", [[error description] UTF8String]);
+    }
+}
+
+#pragma mark - Export bundle resources to a location where we have R/W access
+
+- (void)recursivelyCopyBundleResources
+{
+    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, /*expandTilde:*/YES);
+    NSString *documentsDir = [paths objectAtIndex:0];
+    
+    // copy disks directory into apple2ix directory
+    NSString *apple2ix = @"apple2ix";
+    NSString *disks = @"disks";
+    
+    NSString *apple2ixDirString = [documentsDir stringByAppendingPathComponent:apple2ix];
+    data_dir = strdup([apple2ixDirString UTF8String]);
+    
+    NSString *documentsPath = [apple2ixDirString stringByAppendingPathComponent:disks];
+    NSString *resourcesPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:disks];
+    [self copyDirectoryFrom:resourcesPath to:documentsPath];
+}
+
+- (void)copyDirectoryFrom:(NSString *)resourcesPath to:(NSString *)documentsPath
+{
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    
+    NSError *error = nil;
+    if (![fileManager fileExistsAtPath:documentsPath])
+    {
+        [fileManager createDirectoryAtPath:documentsPath withIntermediateDirectories:YES attributes:nil error:&error];
+    }
+
+    if (error)
+    {
+        ERRLOG("Could not create directory. Error: %s", [[error description] UTF8String]);
+        return;
+    }
+    
+    NSArray *fileList = [fileManager contentsOfDirectoryAtPath:resourcesPath error:&error];
+    if (error)
+    {
+        ERRLOG("Could not list contents of bundle. Error: %s", [[error description] UTF8String]);
+        return;
+    }
+    
+    for (NSString *s in fileList)
+    {
+        NSString *documentsFile = [documentsPath stringByAppendingPathComponent:s];
+        NSString *resourcesFile = [resourcesPath stringByAppendingPathComponent:s];
+        
+        BOOL isDirectory = false;
+        if (![fileManager fileExistsAtPath:resourcesFile isDirectory:&isDirectory])
+        {
+            assert(NO);
+            continue;
+        }
+        
+        if (isDirectory)
+        {
+            [self copyDirectoryFrom:resourcesFile to:documentsFile];
+        }
+        else
+        {
+            [fileManager copyItemAtPath:resourcesFile toPath:documentsFile error:&error];
+            if (error)
+            {
+                ERRLOG("Could not copy file. Error: %s", [[error description] UTF8String]);
+            }
+        }
+    }
+}
+
 @end