//
//  RMConfiguration.m
//
// Copyright (c) 2008-2009, Route-Me Contributors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
//   list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

#import "RMConfiguration.h"

static RMConfiguration *RMConfigurationSharedInstance = nil;

@implementation RMConfiguration
{
	id propertyList;
}

+ (RMConfiguration *)configuration
{
	@synchronized (RMConfigurationSharedInstance)
    {
		if (RMConfigurationSharedInstance != nil)
            return RMConfigurationSharedInstance;

		RMConfigurationSharedInstance = [[RMConfiguration alloc] initWithPath:[[NSBundle mainBundle] pathForResource:@"routeme" ofType:@"plist"]];

		return RMConfigurationSharedInstance;
	}

	return nil;
}

- (RMConfiguration *)initWithPath:(NSString *)path
{
	if (!(self = [super init]))
        return nil;

	NSData *plistData;
	NSString *error;
	NSPropertyListFormat format;

	if (path == nil)
    {
		propertyList = nil;
		return self;
	}

	RMLog(@"reading configuration from %@", path);

	plistData = [NSData dataWithContentsOfFile:path];

	propertyList = [[NSPropertyListSerialization propertyListFromData:plistData
                                                 mutabilityOption:NSPropertyListImmutable
                                                           format:&format
                                                 errorDescription:&error] retain];

	if (!propertyList)
    {
		RMLog(@"problem reading from %@: %@", path, error);
		[error release];
	}

	return self;
}

- (void)dealloc
{
	[propertyList release]; propertyList = nil;
	[super dealloc];
}

- (NSDictionary *)cacheConfiguration
{
	if (propertyList == nil)
        return nil;

	return [propertyList objectForKey:@"caches"];
}

@end