//
//  MultipleDownload.m
//
//  Copyright 2008 Stepcase Limited.
//
 
#import "MultipleDownload.h"
 
 
@implementation MultipleDownload
 
@synthesize urls, requests, receivedDatas, finishCount;
 
- init {
    if ((self = [super init])) {
		self.finishCount = 0;
		NSMutableArray *array = [[NSMutableArray alloc] init];
		self.receivedDatas = array;
		[array release];
 
		NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
		self.requests = dict;
		[dict release];
 
    }
    return self;
}
 
- (void)dealloc {
	[urls release];
	[requests release];
	[receivedDatas autorelease];
    [super dealloc];
}
 
- (void)setDelegate:(id)val
{
    delegate = val;
}
 
- (id)delegate
{
    return delegate;
}
 
 
#pragma mark Methods
- (id)initWithUrls:(NSArray *)aUrls {
    if ((self = [self init]))
		[self requestWithUrls:aUrls];
	return self;
}
 
- (void)requestWithUrls:(NSArray *)aUrls {
 
	[receivedDatas removeAllObjects];
	[requests removeAllObjects];
	[urls autorelease];
	urls = [aUrls copy];
 
	for(NSInteger i=0; i< [urls count]; i++){
		NSMutableData *aData = [[NSMutableData alloc] init];
		[receivedDatas addObject: aData];
		[aData release];
 
		NSURLRequest *request = [[NSURLRequest alloc] 
								 initWithURL: [NSURL URLWithString: [urls objectAtIndex:i]]
								 cachePolicy: NSURLRequestReloadIgnoringLocalCacheData
								 timeoutInterval: 10
								 ];
		NSURLConnection *connection = [[NSURLConnection alloc]
									   initWithRequest:request
									   delegate:self];
 
		[requests setObject: [NSNumber numberWithInt: i] forKey: [NSValue valueWithNonretainedObject:connection]];
		[connection release];
		[request release];	
	}
}
 
- (NSData *)dataAtIndex:(NSInteger)idx {
	return [receivedDatas objectAtIndex:idx];
}
 
- (NSString *)dataAsStringAtIndex:(NSInteger)idx {
	return [[[NSString alloc] initWithData:[receivedDatas objectAtIndex:idx] encoding:NSUTF8StringEncoding] autorelease];
}
 
#pragma mark NSURLConnection Delegates
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
	NSInteger i = [[requests objectForKey: [NSValue valueWithNonretainedObject:connection]] intValue];
    [[receivedDatas objectAtIndex:i] setLength:0];
}
 
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
	NSInteger i = [[requests objectForKey: [NSValue valueWithNonretainedObject:connection]] intValue];
    [[receivedDatas objectAtIndex:i] appendData:data];
}
 
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
	NSInteger i = [[requests objectForKey: [NSValue valueWithNonretainedObject:connection]] intValue];
	finishCount++;
 
	if ([delegate respondsToSelector:@selector(didFinishDownload:)])
        [delegate performSelector:@selector(didFinishDownload:) withObject: [NSNumber numberWithInt: i]];
 
	if(finishCount >= [urls count]){
		if ([delegate respondsToSelector:@selector(didFinishAllDownload)])
			[delegate didFinishAllDownload];
	}
}
 
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
	if ([delegate respondsToSelector:@selector(didFailDownloadWithError:)])
        [delegate performSelector:@selector(didFailDownloadWithError:) withObject: error];
}
 
@end