/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 ****************************************************************/

#import "CAYObjectId.h"


@implementation CAYObjectId

-(id)initWithCoder:(NSCoder*)coder
{
	[super init];
	[self setEntityName:[coder decodeObjectForKey:@"entityName"]];
	[self setObjectIdKeys:[coder decodeObjectForKey:@"objectIdKeys"]];
	[self setSingleKey:[coder decodeObjectForKey:@"singleKey"]];
	[self setSingleValue:[coder decodeObjectForKey:@"singleValue"]];
	[self setTempKey:[coder decodeObjectForKey:@"key"]];
    
    // TODO: should not need to convert NSNull to nil. create
    // a nicer solution
    
    // check/repair tempKey
    if([[self tempKey] isKindOfClass:[NSNull class]])
    {
        [self setTempKey:nil];
    }
    
    // repair singleKey
    if([[self singleKey] isKindOfClass:[NSNull class]])
    {
        [self setSingleKey:nil];
    }
    
    // repair objectIdKeys
    if([[self objectIdKeys] isKindOfClass:[NSNull class]])
    {
        [self setObjectIdKeys:nil];
    }
    
	return self;
}

-(void)encodeWithCoder:(NSCoder*)coder
{
	[coder encodeObject:[self entityName] forKey:@"entityName"];
    [coder encodeObject:[self singleKey] forKey:@"singleKey"];
    [coder encodeObject:[self singleValue] forKey:@"singleValue"];
    [coder encodeObject:[self objectIdKeys] forKey:@"objectIdKeys"];
    
    // TODO: fix problem: the key "key" result in a ugly unserialize exception at the server side.
    if([self tempKey])
    {
        [coder encodeObject:[self tempKey] forKey:@"key"];
    }
}

- (id)copyWithZone:(NSZone *)zone
{
	id copy = [[[self class] allocWithZone:zone] init];
	[copy setEntityName:[self entityName]];
	[copy setObjectIdKeys:[self objectIdKeys]];
	[copy setSingleKey:[self singleKey]];
	[copy setSingleValue:[self singleValue]];
	[copy setTempKey:[self tempKey]];
    
	return copy;
}

-(void)setEntityName:(NSString *)en
{
	[en retain];
	[entityName release];
	entityName = en;
}

-(NSString *)entityName
{
	return entityName;
}

-(void)setObjectIdKeys:(NSDictionary *)oidks
{
	[oidks retain];
	[objectIdKeys release];
	objectIdKeys = oidks;
}

-(NSDictionary *)objectIdKeys
{
	return objectIdKeys;
}

-(void)setSingleKey:(NSString *)sk
{
	[sk retain];
	[singleKey release];
	singleKey = sk;
}

-(NSString *)singleKey
{
	return singleKey;
}

-(void)setSingleValue:(NSObject *)sv
{
	[sv retain];
	[singleValue release];
	singleValue = sv;
}

-(NSObject *)singleValue
{
	return singleValue;
}

-(void)setTempKey:(NSData *)k
{
	[k retain];
	[tempKey release];
	tempKey = k;
}

-(NSData *)tempKey
{
	return tempKey;
}

- (unsigned)hash
{
	/*
	 file:///Developer/ADC%20Reference%20Library/documentation/Cocoa/Reference/Foundation/Protocols/NSObject_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/NSObject/hash
	 http://www.mulle-kybernetik.com/artikel/Optimization/opti-7.html
     http://www.cocoabuilder.com/archive/message/cocoa/2003/12/18/546
	 */
    if([self tempKey])
    {
        return ([entityName hash] ^ [[self tempKey] hash]);
    }
	if([self singleValue])
	{
		return ([entityName hash] ^ [[self singleValue] hash]);
	}
    // TODO: include other parameters in hash code
	return [entityName hash];
}

- (BOOL)isEqual:(id)anObject
{
	if(![[self entityName] isEqualToString:[anObject entityName]])
	{
		return NO;
	}
    if([self singleKey])
    {
        if(![[self singleKey] isEqualToString:[anObject singleKey]])
        {
            return NO;
        }
        if(![[self singleValue] isEqual:[anObject singleValue]])
        {
            return NO;
        }
    }
    if([self objectIdKeys])
    {
        if(![[self objectIdKeys] isEqualToDictionary:[anObject objectIdKeys]])
        {
            return NO;
        }
    }
    if([self tempKey])
    {
        if(![[self tempKey] isEqualToData:[anObject tempKey]])
        {
            return NO;
        }
    }
	// TODO: check all values
	return YES;
}

-(NSString *)description
{
    NSString *result;
    if([self tempKey])
    {
        result = [[NSString alloc] initWithFormat:@"%@ {%@; TEMP: %@}", [self class], [self entityName], [self tempKey]];
    }
    else if ([self singleKey])
    {
        result = [[NSString alloc] initWithFormat:@"%@ {%@; %@ = %@}", [self class], [self entityName], [self singleKey], [self singleValue]];
    }
    else if ([self objectIdKeys])
    {
        result = [[NSString alloc] initWithFormat:@"%@ {%@; objectIdKeys = %@}", [self class], [self entityName], [self objectIdKeys]];
    }
    else
    {
        // should match one of the above. if not, output all values
        result = [[NSString alloc] initWithFormat:@"%@ {%@; objectIdKeys = %@; singleKey = %@; singleValue = %@}", [self class], [self entityName], [self objectIdKeys], [self singleKey], [self singleValue]];
    }
    [result autorelease];
    return result;
}

-(void)dealloc
{
    [self setEntityName:nil];
    [self setObjectIdKeys:nil];
    [self setSingleKey:nil];
    [self setSingleValue:nil];
    [self setTempKey:nil];
	[super dealloc];
}

@end