server: add buttons to start server and to move data to shared directory

kambala-decapitator/vcmi#9 kambala-decapitator/vcmi#15

server/ios/main.mm

@@ -12,10 +12,108 @@
 #include "../Global.h"
 #include "CVCMIServer.h"
 
+#define SHARED_DATA_DIR @"GameData"
+
 @interface ViewController : UIViewController
+@property (nonatomic, copy) NSURL *sharedPathURL;
+@property (nonatomic, copy) NSArray<NSURL *> *dataDirsInDocuments;
 @end
 
 @implementation ViewController
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+
+    auto startServerButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    [startServerButton setTitle:@"Start Server" forState:UIControlStateNormal];
+    [startServerButton addTarget:self action:@selector(startServer:) forControlEvents:UIControlEventTouchUpInside];
+    [self.view addSubview:startServerButton];
+    startServerButton.translatesAutoresizingMaskIntoConstraints = NO;
+    [NSLayoutConstraint activateConstraints:@[
+        [startServerButton.centerXAnchor constraintEqualToAnchor:self.view.centerXAnchor],
+        [startServerButton.centerYAnchor constraintEqualToAnchor:self.view.centerYAnchor],
+    ]];
+
+    auto bundleID = NSBundle.mainBundle.bundleIdentifier;
+    auto lastDotPos = [bundleID rangeOfString:@"." options:NSBackwardsSearch].location;
+    auto groupID = [NSString stringWithFormat:@"group.%@.vcmi", [bundleID substringToIndex:lastDotPos]];
+    auto fm = NSFileManager.defaultManager;
+    self.sharedPathURL = [fm containerURLForSecurityApplicationGroupIdentifier:groupID];
+    if (!self.sharedPathURL)
+    {
+        NSLog(@"shared path for group '%@' not available", groupID);
+        return;
+    }
+
+    auto dirEnumerator = [fm enumeratorAtURL:self.sharedPathURL includingPropertiesForKeys:@[NSURLNameKey] options:NSDirectoryEnumerationSkipsSubdirectoryDescendants errorHandler:nil];
+    for (NSURL *fileURL in dirEnumerator)
+    {
+        NSString *filename;
+        if ([fileURL getResourceValue:&filename forKey:NSURLNameKey error:nullptr] && [filename caseInsensitiveCompare:SHARED_DATA_DIR] == NSOrderedSame) {
+            NSLog(SHARED_DATA_DIR @" dir already exists in the shared path");
+            return;
+        }
+    }
+
+    auto documentsURL = [fm URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:YES error:nullptr];
+    dirEnumerator = [fm enumeratorAtURL:documentsURL includingPropertiesForKeys:@[NSURLNameKey] options:NSDirectoryEnumerationSkipsSubdirectoryDescendants errorHandler:nil];
+    auto dataDirs = [NSMutableArray<NSURL *> arrayWithCapacity:3];
+    for (NSURL *fileURL in dirEnumerator)
+    {
+        NSString *filename;
+        if (![fileURL getResourceValue:&filename forKey:NSURLNameKey error:nullptr])
+            continue;
+        if ([filename caseInsensitiveCompare:@"data"] == NSOrderedSame || [filename caseInsensitiveCompare:@"maps"] == NSOrderedSame || [filename caseInsensitiveCompare:@"mp3"] == NSOrderedSame)
+            [dataDirs addObject:fileURL];
+    }
+    if (dataDirs.count < 3)
+    {
+        NSLog(@"not all required dirs are present, found only: %@", dataDirs);
+        return;
+    }
+    self.dataDirsInDocuments = dataDirs;
+
+    auto moveDataButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    [moveDataButton setTitle:@"Move data to shared dir" forState:UIControlStateNormal];
+    [moveDataButton addTarget:self action:@selector(moveDataToSharedDir:) forControlEvents:UIControlEventTouchUpInside];
+    [self.view addSubview:moveDataButton];
+
+    moveDataButton.translatesAutoresizingMaskIntoConstraints = NO;
+    [NSLayoutConstraint activateConstraints:@[
+        [moveDataButton.centerXAnchor constraintEqualToAnchor:self.view.centerXAnchor],
+        [moveDataButton.topAnchor constraintEqualToAnchor:startServerButton.bottomAnchor constant:10],
+    ]];
+}
+
+- (void)startServer:(UIButton *)button
+{
+    button.enabled = NO;
+    [NSThread detachNewThreadWithBlock:^{
+        NSThread.currentThread.name = @"CVCMIServer";
+        CVCMIServer::create();
+        dispatch_sync(dispatch_get_main_queue(), ^{
+            button.enabled = YES;
+        });
+    }];
+}
+
+- (void)moveDataToSharedDir:(UIButton *)button
+{
+    button.enabled = NO;
+    dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0), ^{
+        auto fm = NSFileManager.defaultManager;
+        auto destinationURL = [self.sharedPathURL URLByAppendingPathComponent:SHARED_DATA_DIR];
+        [fm createDirectoryAtURL:destinationURL withIntermediateDirectories:YES attributes:nil error:nullptr];
+        for (NSURL *dirURL in self.dataDirsInDocuments)
+            [fm moveItemAtURL:dirURL toURL:[destinationURL URLByAppendingPathComponent:dirURL.lastPathComponent] error:nullptr];
+
+        dispatch_sync(dispatch_get_main_queue(), ^{
+            [button removeFromSuperview];
+        });
+    });
+}
+
 @end
 
 
@@ -31,12 +129,6 @@
 	self.window.rootViewController = [ViewController new];
 	[self.window makeKeyAndVisible];
 
-    [NSThread detachNewThreadWithBlock:^
-    {
-        NSThread.currentThread.name = @"CVCMIServer";
-        NSLog(@"starting server from thread %@", NSThread.currentThread);
-        CVCMIServer::create();
-    }];
 	return YES;
 }