//
//  AsyncAskPassServer.m
//  Bienvenue
//
//  Created by Hamish Allan on 04/06/2008.
//  Copyright 2008 Hamish Allan. All rights reserved.
//

#import "AsyncAskPassServer.h"
#import "AsyncAskPassClient.h"

#import <uuid/uuid.h>

@implementation AsyncAskPassServer

+ (NSString *)randomToken
{
	uuid_t randomUUID;
	uuid_generate_random(randomUUID);
	char randomUUIDChars[37];
	uuid_unparse(randomUUID, randomUUIDChars);
	return [NSString stringWithCString:randomUUIDChars];
}

- (id)init
{
	self = [super init];
	if (self)
	{
		NSConnection *connection = [NSConnection defaultConnection];
		[connection setRootObject:self];
		if ([connection registerName:AsyncAskPassServerName] == NO)
			[NSException raise:NSPortReceiveException format:@"Cannot vend %@", AsyncAskPassServerName];
		myTokens = [[NSMutableDictionary alloc] init];
	}
	return self;
}

- (void)dealloc
{
	[myTokens release];
	[super dealloc];
}

- (NSString *)tokenForProxy:(id)proxy
{
	NSString *token = [[self class] randomToken];
	[myTokens setObject:proxy forKey:token];
	return token;
}

#define DISTRIBUTED_OBJECTS_TEST_CODEPATH 0

#ifdef DISTRIBUTED_OBJECTS_TEST_CODEPATH
- (void)indirectCallbackWithClientAndStringArray:(NSArray *)clientAndStringArray
{
	[[clientAndStringArray objectAtIndex:0] setAnswerText:[clientAndStringArray objectAtIndex:1]];
	[clientAndStringArray release];
}
#endif

- (BOOL)askQuestion:(NSString *)question fromClient:(AsyncAskPassClient *)client
{
	NSString *clientToken = [client token];
	id proxy = [myTokens objectForKey:clientToken];
	if (proxy)
	{
		[proxy setQuestionText:question withAnswerTarget:client];

#ifdef DISTRIBUTED_OBJECTS_TEST_CODEPATH
		switch (DISTRIBUTED_OBJECTS_TEST_CODEPATH)
		{
			case 1:
				[client setAnswerText:@"immediate callback"];
				break;
			case 2:
				[client performSelector:@selector(setAnswerText:) withObject:@"zero delay callback" afterDelay:0.0];
				break;
			case 3:
				[client performSelector:@selector(setAnswerText:) withObject:@"1s delay callback" afterDelay:1.0];
				break;
			case 4:
				[self indirectCallbackWithClientAndStringArray:
				 [[NSArray arrayWithObjects:client, @"immediate indirect callback", nil] retain]];
				break;
			case 5:
				[self performSelector:@selector(indirectCallbackWithClientAndStringArray:) withObject:
				 [[NSArray arrayWithObjects:client, @"zero delay indirect callback", nil] retain] afterDelay:0.0];
				break;
			case 6:
				[self performSelector:@selector(indirectCallbackWithClientAndStringArray:) withObject:
				 [[NSArray arrayWithObjects:client, @"1s delay indirect callback", nil] retain] afterDelay:1.0];
				break;
			default:
				break;
		}
#endif

		return YES;
	}
	else
	{
		[client setAnswerText:nil];
		return NO;
	}
}

@end