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//
// EGOImageLoadConnection.m
// EGOImageLoading
//
// Created by Shaun Harrison on 12/1/09.
// Copyright (c) 2009-2010 enormego
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//

#import "EGOImageLoadConnection.h"


@implementation EGOImageLoadConnection
@synthesize imageURL=_imageURL, response=_response, delegate=_delegate, timeoutInterval=_timeoutInterval;

#if __EGOIL_USE_BLOCKS
@synthesize handlers;
#endif

- (id)initWithImageURL:(NSURL*)aURL delegate:(id)delegate {
if((self = [super init])) {
_imageURL = [aURL retain];
self.delegate = delegate;
_responseData = [[NSMutableData alloc] init];
self.timeoutInterval = 30;
#if __EGOIL_USE_BLOCKS
handlers = [[NSMutableDictionary alloc] init];
#endif
}

return self;
}

- (void)start {
NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:self.imageURL
cachePolicy:NSURLRequestReturnCacheDataElseLoad
timeoutInterval:self.timeoutInterval];
[request setValue:@"gzip" forHTTPHeaderField:@"Accept-Encoding"];
_connection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
[request release];
}

- (void)cancel {
[_connection cancel];
}

- (NSData*)responseData {
return _responseData;
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
if(connection != _connection) return;
[_responseData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
if(connection != _connection) return;
self.response = response;
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
if(connection != _connection) return;

if([self.delegate respondsToSelector:@selector(imageLoadConnectionDidFinishLoading:)]) {
[self.delegate imageLoadConnectionDidFinishLoading:self];
}
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
if(connection != _connection) return;

if([self.delegate respondsToSelector:@selector(imageLoadConnection:didFailWithError:)]) {
[self.delegate imageLoadConnection:self didFailWithError:error];
}
}


- (void)dealloc {
self.response = nil;
self.delegate = nil;
#if __EGOIL_USE_BLOCKS
[handlers release], handlers = nil;
#endif

[_connection release];
[_imageURL release];
[_responseData release];
[super dealloc];
}

@end
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