#import "CQActivityWindowController.h"

#import <MVConnectionsController.h>
#import "MVFileTransfer.h"
#import "MVFileTransferController.h"
#import "JVChatController.h"

#import "CQDownloadCell.h"
#import "CQSubtitleCell.h"
#import "CQGroupCell.h"

#define CQFileTransferInactiveWaitLimit 300 // in seconds
#define CQExpandCollapseRowInterval .5

NSString *CQActivityTypeChatInvite = @"CQActivityTypeChatInvite";
NSString *CQActivityTypeDirectChatInvite = @"CQActivityTypeDirectChatInvite";
NSString *CQActivityTypeDirectDownload = @"CQActivityTypeDirectDownload";
NSString *CQActivityTypeFileTransfer = @"CQActivityTypeFileTransfer";

NSString *CQActivityStatusAccepted = @"CQActivityStatusAccepted";
NSString *CQActivityStatusError = @"CQActivityStatusError";
NSString *CQActivityStatusFinished = @"CQActivityStatusFinished";
NSString *CQActivityStatusPending = @"CQActivityStatusPending";
NSString *CQActivityStatusRejected = @"CQActivityStatusRejected";

NSString *CQDirectChatConnectionKey = @"CQDirectChatConnectionKey";
NSString *CQDirectDownloadKey = @"CQDirectDownloadKey";

MVInline double CQUnitKilobyte (void);
MVInline double CQUnitMegabyte (void);
MVInline double CQUnitGigabyte (void);
MVInline double CQUnitTerabyte (void);

MVInline double CQUnitKilobyte (void) {
	static NSUInteger result = 0;
	if (!result)
		result = (floor(NSAppKitVersionNumber) <= NSAppKitVersionNumber10_5) ? 1024 : 1000;
	return result;
}

MVInline double CQUnitMegabyte (void) {
	static NSUInteger result = 0;
	if (!result)
		result = CQUnitKilobyte() * CQUnitKilobyte();
	return result;
}

MVInline double CQUnitGigabyte (void) {
	static NSUInteger result = 0;
	if (!result)
		result = CQUnitMegabyte() * CQUnitKilobyte();
	return result;
}

MVInline double CQUnitTerabyte (void) {
	static NSUInteger result = 0;
	if (!result)
		result = CQUnitGigabyte() * CQUnitKilobyte();
	return result;
}

NSString *MVPrettyFileSize (CQFileSize size) {
	if (size == 0) return NSLocalizedString(@"Zero bytes", "no file size");
	if (size < CQUnitKilobyte()) return [NSString stringWithFormat:NSLocalizedString(@"%lu bytes", "file size measured in bytes"), size];
	if (size < CQUnitMegabyte()) return [NSString stringWithFormat:NSLocalizedString(@"%.0f KB", "file size measured in kilobytes"),  (size / CQUnitKilobyte())];
	if (size < CQUnitGigabyte()) return [NSString stringWithFormat:NSLocalizedString(@"%.1f MB", "file size measured in megabytes"),  (size / CQUnitMegabyte())];
	if (size < CQUnitTerabyte()) return [NSString stringWithFormat:NSLocalizedString(@"%.2f GB", "file size measured in gigabytes"),  (size / CQUnitGigabyte())];
	return [NSString stringWithFormat:NSLocalizedString(@"%.3f TB", "file size measured in terabytes"),  (size / CQUnitTerabyte())];
}

NSString *MVReadableTime (NSTimeInterval date, BOOL longFormat) {
	NSTimeInterval secs = [[NSDate date] timeIntervalSince1970] - date;
	static NSArray *desc = nil;
	if (!desc)
		desc = [[NSArray alloc] initWithObjects:NSLocalizedString(@"second", "singular second"), NSLocalizedString(@"minute", "singular minute"), NSLocalizedString(@"hour", "singular hour"), NSLocalizedString(@"day", "singular day"), NSLocalizedString(@"week", "singular week"), NSLocalizedString(@"month", "singular month"), NSLocalizedString(@"year", "singular year"), nil];
	static NSArray *plural = nil;
	if (!plural)
		plural = [[NSArray alloc] initWithObjects:NSLocalizedString(@"seconds", "plural seconds"), NSLocalizedString(@"minutes", "plural minutes"), NSLocalizedString(@"hours", "plural hours"), NSLocalizedString(@"days", "plural days"), NSLocalizedString(@"weeks", "plural weeks"), NSLocalizedString(@"months", "plural months"), NSLocalizedString(@"years", "plural years"), nil];
	static NSArray *values = nil;
	if (!values)
		values = [[NSArray alloc] initWithObjects:[NSNumber numberWithUnsignedInteger:1], [NSNumber numberWithUnsignedInteger:60], [NSNumber numberWithUnsignedInteger:3600], [NSNumber numberWithUnsignedInteger:86400], [NSNumber numberWithUnsignedInteger:604800], [NSNumber numberWithUnsignedInteger:2628000], [NSNumber numberWithUnsignedInteger:31536000], nil];

	if (secs < 0)
		secs = fabs(secs);

	NSUInteger i = 0;
	while (i < values.count && secs >= [[values objectAtIndex:i] doubleValue]) i++;
	if (i) i--;

	NSUInteger stop = [[values objectAtIndex:i] unsignedIntegerValue];
	NSUInteger val = (NSUInteger)(secs / (float)stop);
	NSArray *use = (val > 1 ? plural : desc);
	NSString *retval = [NSString stringWithFormat:@"%u %@", val, [use objectAtIndex:i]];
	if (!longFormat || i <= 0)
		return retval;

	NSUInteger rest = (NSUInteger)((NSUInteger)secs % stop);
	stop = [[values objectAtIndex:--i] unsignedIntegerValue];
	rest = (NSUInteger)(rest / (float)stop);
	if (rest > 0) {
		use =  (rest > 1 ? plural : desc);
		retval = [retval stringByAppendingFormat:@" %u %@", rest, [use objectAtIndex:i--]];
	}

	return retval;
}

@interface CQActivityWindowController (Private)
- (void) _loadImagesForButtonsWithFormat:(NSString *) format;

- (void) _setDestinationForTransfer:(MVFileTransfer *) transfer shouldAsk:(BOOL) shouldAsk;

- (NSUInteger) _directChatConnectionCount;
- (NSUInteger) _directDownloadCount;
- (NSUInteger) _fileTransferCountForConnection:(MVChatConnection *) connection;
- (NSUInteger) _invitationCountForConnection:(MVChatConnection *) connection;

- (BOOL) _isGroupItem:(id) item;
- (BOOL) _shouldExpandOrCollapse;

- (void) _appendActivity:(id) activity forConnection:(id) connection;
@end

#pragma mark -

@implementation CQActivityWindowController
+ (CQActivityWindowController *) sharedController {
	static CQActivityWindowController *sharedActivityWindowController = nil;
	static BOOL creatingSharedInstance = NO;
	if (sharedActivityWindowController)
		return sharedActivityWindowController;

	creatingSharedInstance = YES;
	sharedActivityWindowController = [[CQActivityWindowController alloc] init];

	return sharedActivityWindowController;
}

- (id) init {
	if (!(self = [super initWithWindowNibName:@"CQActivityWindow"]))
		return nil;

	_activity = [[NSMapTable alloc] initWithKeyOptions:NSMapTableZeroingWeakMemory valueOptions:NSMapTableStrongMemory capacity:[[MVConnectionsController defaultController] connections].count];
	[_activity setObject:[NSMutableArray array] forKey:CQDirectChatConnectionKey];
	[_activity setObject:[NSMutableArray array] forKey:CQDirectDownloadKey];

	_timeFormatter = [[NSDateFormatter alloc] init];
	_timeFormatter.dateStyle = NSDateFormatterNoStyle;
	_timeFormatter.timeStyle = NSDateFormatterShortStyle;

	_cellImages = [[NSMutableDictionary alloc] init];
	[self _loadImagesForButtonsWithFormat:@"check"];
	[self _loadImagesForButtonsWithFormat:@"magnifying"];
	[self _loadImagesForButtonsWithFormat:@"retry"];
	[self _loadImagesForButtonsWithFormat:@"x"];

	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(chatRoomInvitationAccepted:) name:MVChatRoomJoinedNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(chatRoomInvitationReceived:) name:MVChatRoomInvitedNotification object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(directChatDidConnect:) name:MVDirectChatConnectionErrorDomain object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(directChatErrorOccurred:) name:MVDirectChatConnectionDidConnectNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(directChatOfferReceived:) name:MVDirectChatConnectionOfferNotification object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileTransferDidReceiveData:) name:MVFileTransferDataTransferredNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileTransferWasOffered:) name:MVDownloadFileTransferOfferNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileTransferDidStart:) name:MVFileTransferStartedNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileTransferDidFinish:) name:MVFileTransferFinishedNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileTransferErrorReceived:) name:MVFileTransferErrorOccurredNotification object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(connectionDidConnect:) name:MVChatConnectionDidConnectNotification object:nil];
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(connectionDidDisconnect:) name:MVChatConnectionDidDisconnectNotification object:nil];

	return self;
}

- (void) dealloc {
	[_titleCell release];
	[_groupCell release];
	[_activity release];
	[_timeFormatter release];

	[super dealloc];
}

#pragma mark -

- (void) _loadImagesForButtonsWithFormat:(NSString *) format {
	NSMutableDictionary *images = [[NSMutableDictionary alloc] init];
	[images setObject:[NSImage imageNamed:[NSString stringWithFormat:@"%@-default.png", format]] forKey:CQMouseStateDefaultKey];
	[images setObject:[NSImage imageNamed:[NSString stringWithFormat:@"%@-hover.png", format]] forKey:CQMouseStateHoverKey];
	[images setObject:[NSImage imageNamed:[NSString stringWithFormat:@"%@-click.png", format]] forKey:CQMouseStateClickKey];
	[_cellImages setObject:images forKey:format];
}

#pragma mark -

- (IBAction) showActivityWindow:(id) sender {
	[self.window makeKeyAndOrderFront:nil];
}

- (IBAction) hideActivityWindow:(id) sender {
	[self.window orderOut:nil];
}

- (void) orderFrontIfNecessary {
	if (![self.window isVisible])
		[self.window makeKeyAndOrderFront:nil];
}

#pragma mark -

- (void) connectionDidConnect:(NSNotification *) notification {
	MVChatConnection *connection = notification.object;
	[_activity setObject:[NSMutableArray array] forKey:connection];
}

- (void) connectionDidDisconnect:(NSNotification *) notification {
	[_outlineView reloadData];
}

#pragma mark -

- (void) chatRoomInvitationAccepted:(NSNotification *) notification {
	MVChatRoom *room = notification.object;
	for (NSMutableDictionary *dictionary in [_activity objectForKey:room.connection]) {
		if ([dictionary objectForKey:@"type"] != CQActivityTypeChatInvite)
			continue;

		id activityRoom = [dictionary objectForKey:@"room"];
		if ([activityRoom isKindOfClass:[MVChatRoom class]])
			activityRoom = ((MVChatRoom *)activityRoom).name;

		if (![room.name isEqualToString:activityRoom])
			continue;

		[dictionary setObject:CQActivityStatusAccepted forKey:@"status"];

		[_outlineView reloadItem:dictionary];

		break;
	}
}

- (void) chatRoomInvitationReceived:(NSNotification *) notification {
	if ([[NSUserDefaults standardUserDefaults] boolForKey:@"JVAutoJoinChatRoomOnInvite"])
		return;

	NSString *name = [notification.userInfo objectForKey:@"room"];

	// The notification object is a string if we receive an invite in the first few seconds of Colloquy being open, work around that and make sure we have a MVChatConnection to work with instead.
	id connection = notification.object;
	if (![connection isKindOfClass:[MVChatConnection class]])
		connection = [[MVConnectionsController defaultController] connectionForServerAddress:connection];

	if (!connection) {
		NSLog(@"Failed to find a connection for: %@. Unable to join room after invite.", notification.object);
		return;
	}

	for (NSDictionary *dictionary in [_activity objectForKey:connection]) { // if we already have an invite and its pending, ignore it
		id room = [dictionary objectForKey:@"room"];
		if ([room isKindOfClass:[MVChatRoom class]])
			room = ((MVChatRoom *)room).name;
		if ([room isCaseInsensitiveEqualToString:name])
			if ([dictionary objectForKey:@"status"] == CQActivityStatusPending)
				return;
	}

	NSMutableDictionary *chatRoomInfo = [notification.userInfo mutableCopy];
	[chatRoomInfo setObject:CQActivityTypeChatInvite forKey:@"type"];
	[chatRoomInfo setObject:CQActivityStatusPending forKey:@"status"];
	[chatRoomInfo setObject:[NSDate date] forKey:@"date"];
	[self _appendActivity:chatRoomInfo forConnection:connection];
	[chatRoomInfo release];

	[_outlineView reloadData];

	[self orderFrontIfNecessary];
}

#pragma mark -

- (void) directChatDidConnect:(NSNotification *) notification {
	MVDirectChatConnection *connection = notification.object;

	for (NSDictionary *dictionary in [_activity objectForKey:CQDirectChatConnectionKey]) {
		if ([dictionary objectForKey:@"connection"] != connection)
			continue;

		[_outlineView reloadItem:dictionary];

		break;
	}
}

- (void) directChatErrorOccurred:(NSNotification *) notification {
	MVDirectChatConnection *connection = notification.object;

	for (NSDictionary *dictionary in [_activity objectForKey:CQDirectChatConnectionKey]) {
		if ([dictionary objectForKey:@"connection"] != connection)
			continue;

		[_outlineView reloadItem:dictionary];

		break;
	}

	[self orderFrontIfNecessary];
}

- (void) directChatOfferReceived:(NSNotification *) notification {
	MVDirectChatConnection *connection = notification.object;

	NSMutableDictionary *chatRoomInfo = [notification.userInfo mutableCopy];
	[chatRoomInfo setObject:CQActivityTypeDirectChatInvite forKey:@"type"];
	[chatRoomInfo setObject:connection forKey:@"connection"];
	[self _appendActivity:chatRoomInfo forConnection:CQDirectChatConnectionKey];
	[chatRoomInfo release];

	[_outlineView reloadData];

	[self orderFrontIfNecessary];
}

#pragma mark -

- (void) downloadDidFinish:(NSURLDownload *) download {
	for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
		if ([dictionary objectForKey:@"download"] != download)
			continue;

		[dictionary setObject:CQActivityStatusFinished forKey:@"status"];

		[[MVFileTransferController defaultController] fileAtPathDidFinish:[dictionary objectForKey:@"path"]];

		CQDownloadCell *cell = [dictionary objectForKey:@"cell"];
		[cell hideProgressIndicator];

		[dictionary removeObjectForKey:@"cell"];

		if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVRemoveTransferredItems"] == 2) {
			[[_activity objectForKey:CQDirectDownloadKey] removeObject:dictionary];

			[_outlineView reloadData];

			return;
		}

		[_outlineView reloadData];

		break;
	}

	[self orderFrontIfNecessary];
}

- (void) downloadFileAtURL:(NSURL *) url toLocalFile:(NSString *) path {
	WebDownload *download = [[WebDownload alloc] initWithRequest:[NSURLRequest requestWithURL:url] delegate:self];

	if (!download) {
		NSBeginAlertSheet(NSLocalizedString(@"Invalid URL", "Invalid URL title"), nil, nil, nil, self.window, nil, nil, nil, nil, NSLocalizedString(@"The download URL is either invalid or unsupported.", "Invalid URL message"));
		return;
	}

	if (!path.length)
		path = [[MVFileTransferController userPreferredDownloadFolder] stringByAppendingPathComponent:url.path.lastPathComponent];
	[download setDestination:path allowOverwrite:NO];

	NSMutableDictionary *item = [[NSMutableDictionary alloc] init];
	[item setObject:[NSNumber numberWithUnsignedLongLong:0] forKey:@"transferred"];
	[item setObject:[NSNumber numberWithDouble:0.] forKey:@"rate"];
	[item setObject:[NSNumber numberWithUnsignedLongLong:0] forKey:@"size"];
	[item setObject:download forKey:@"download"];
	[item setObject:url forKey:@"url"];
	[item setObject:CQActivityTypeDirectDownload forKey:@"type"];
	[item setObject:path.length ? path : url.path.lastPathComponent forKey:@"path"];

	[[_activity objectForKey:CQDirectDownloadKey] addObject:item];

	[item release];
	[download release];

	[_outlineView reloadData];

	[self orderFrontIfNecessary];
}

- (void) downloadFileSavePanelDidEnd:(NSSavePanel *) sheet returnCode:(int) returnCode contextInfo:(void *) contextInfo {
	WebDownload *download = [(WebDownload *)contextInfo retain];

	if (returnCode == NSOKButton) {
		for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
			if ([dictionary objectForKey:@"download"] != download)
				continue;
			if (sheet)
				[dictionary setObject:[sheet filename] forKey:@"path"];

			[download setDestination:[dictionary objectForKey:@"path"] allowOverwrite:YES];

			break;
		}
	} else {
		[download cancel];

		for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
			if ([dictionary objectForKey:@"download"] != download)
				continue;

			[dictionary setObject:CQActivityStatusRejected forKey:@"status"];

			break;
		}
	}

	[download release];
}

- (NSWindow *) downloadWindowForAuthenticationSheet:(WebDownload *) download {
	return self.window;
}

- (void) download:(NSURLDownload *) download decideDestinationWithSuggestedFilename:(NSString *) filename {
	if (![[NSUserDefaults standardUserDefaults] boolForKey:@"JVAskForTransferSaveLocation"]) {
		NSString *path = [[MVFileTransferController userPreferredDownloadFolder] stringByAppendingPathComponent:filename];

		for (NSMutableDictionary *info in [_activity objectForKey:CQDirectDownloadKey]) {
			if ([info objectForKey:@"download"] != download)
				continue;

			[info setObject:path forKey:@"path"];

			break;
		}

		[self downloadFileSavePanelDidEnd:nil returnCode:NSOKButton contextInfo:download];
	} else {
		NSSavePanel *savePanel = [NSSavePanel savePanel];
		savePanel.nameFieldLabel = filename;
		[savePanel beginSheetForDirectory:[MVFileTransferController userPreferredDownloadFolder] file:filename modalForWindow:nil modalDelegate:self didEndSelector:@selector(downloadFileSavePanelDidEnd:returnCode:contextInfo:) contextInfo:download];
	}
}

- (void) download:(NSURLDownload *) download didCreateDestination:(NSString *) path {
	for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
		if ([dictionary objectForKey:@"download"] != download)
			continue;

		if (![[dictionary objectForKey:@"path"] isEqualToString:path])
			[dictionary setObject:path forKey:@"path"];

		break;
	}
}

- (void) download:(NSURLDownload *) download didFailWithError:(NSError *) error {
	for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
		if ([dictionary objectForKey:@"download"] != download)
			continue;

		[dictionary setObject:CQActivityStatusError forKey:@"status"];
		[dictionary setObject:error forKey:@"error"];

		[_outlineView reloadData];

		break;
	}

	[self orderFrontIfNecessary];
}

- (void) download:(NSURLDownload *) download didReceiveDataOfLength:(NSUInteger) length {
	for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
		if ([dictionary objectForKey:@"download"] != download)
			continue;

		NSTimeInterval timeslice = [[dictionary objectForKey:@"started"] timeIntervalSinceNow] * -1;
		CQFileSize transferred = [[dictionary objectForKey:@"transferred"] unsignedLongLongValue] + length;

		[dictionary setObject:CQActivityStatusAccepted forKey:@"status"];
		[dictionary setObject:[NSNumber numberWithUnsignedLongLong:transferred] forKey:@"transferred"];

		CQFileSize size = [[dictionary objectForKey:@"size"] unsignedLongLongValue];
		if (transferred > size)
			[dictionary setObject:[NSNumber numberWithUnsignedLongLong:transferred] forKey:@"size"];

		if (transferred != size)
			[dictionary setObject:[NSNumber numberWithDouble:(transferred / timeslice)] forKey:@"rate"];

		[_outlineView reloadItem:dictionary];

		break;
	}
}

- (void) download:(NSURLDownload *) download didReceiveResponse:(NSURLResponse *) response {
	for (NSMutableDictionary *dictionary in [_activity objectForKey:CQDirectDownloadKey]) {
		if ([dictionary objectForKey:@"download"] != download)
			continue;

		if ([response.URL.scheme hasCaseInsensitivePrefix:@"HTTP"] && ((NSHTTPURLResponse *)response).statusCode != 200) {
			[dictionary setObject:CQActivityStatusError forKey:@"status"];

			[_outlineView reloadData];

			return;
		}

		[dictionary setObject:CQActivityStatusAccepted forKey:@"status"];
		[dictionary setObject:[NSNumber numberWithUnsignedLongLong:0] forKey:@"transferred"];

		unsigned long size = [response expectedContentLength];
		if ((long)size == -1)
			size = 0;

		[dictionary setObject:[NSNumber numberWithUnsignedLongLong:size] forKey:@"size"];

		if (![dictionary objectForKey:@"started"])
			[dictionary setObject:[NSDate date] forKey:@"started"];

		[_outlineView reloadData];

		break;
	}
}

- (BOOL) download:(NSURLDownload *) download shouldDecodeSourceDataOfMIMEType:(NSString *) encodingType {
	return NO;
}

#pragma mark -

- (void) fileTransferDidStart:(NSNotification *) notification {
	MVFileTransfer *transfer = notification.object;

	for (NSDictionary *dictionary in [_activity objectForKey:transfer.user.connection]) {
		if ([dictionary objectForKey:@"transfer"] != transfer)
			continue;

		[_outlineView reloadItem:dictionary];

		break;
	}

	[self orderFrontIfNecessary];
}

- (void) fileTransferDidReceiveData:(NSNotification *) notification {
	MVFileTransfer *transfer = notification.object;
	for (NSMutableDictionary *dictionary in [_activity objectForKey:transfer.user.connection]) {
		if ([dictionary objectForKey:@"transfer"] != transfer)
			continue;

		NSTimeInterval timeslice = [transfer.startDate timeIntervalSinceNow] * -1;
		if (transfer.transferred != transfer.finalSize)
			[dictionary setObject:[NSNumber numberWithDouble:(transfer.transferred / timeslice)] forKey:@"rate"];

		[_outlineView reloadItem:dictionary];

		break;
	}		
}

- (void) fileTransferDidFinish:(NSNotification *) notification {
	MVFileTransfer *transfer = notification.object;
	for (NSMutableDictionary *dictionary in [_activity objectForKey:transfer.user.connection]) {
		if ([dictionary objectForKey:@"transfer"] != transfer)
			continue;

		CQDownloadCell *cell = [dictionary objectForKey:@"cell"];
		[cell hideProgressIndicator];

		[dictionary removeObjectForKey:@"cell"];

		if ([transfer isDownload])
			[[MVFileTransferController defaultController] fileAtPathDidFinish:((MVDownloadFileTransfer *)transfer).destination];

		if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVRemoveTransferredItems"] == 2) {
			[[_activity objectForKey:transfer.user.connection] removeObjectIdenticalTo:dictionary];
			[_outlineView reloadData];

			return;
		}

		[_outlineView reloadItem:dictionary];

		break;
	}

	[self orderFrontIfNecessary];
}

- (void) fileTransferErrorReceived:(NSNotification *) notification {
	MVFileTransfer *transfer = notification.object;
	for (NSDictionary *dictionary in [_activity objectForKey:transfer.user.connection]) {
		if ([dictionary objectForKey:@"transfer"] != transfer)
			continue;

		[_outlineView reloadItem:dictionary];

		break;
	}

	[self orderFrontIfNecessary];
}

- (void) fileTransferWasOffered:(NSNotification *) notification {
	MVFileTransfer *transfer = notification.object;

	NSMutableDictionary *fileTransferInfo = [[NSMutableDictionary dictionaryWithObjectsAndKeys:CQActivityTypeFileTransfer, @"type", transfer, @"transfer", nil] mutableCopy];
	[fileTransferInfo setObject:CQActivityTypeFileTransfer forKey:@"type"];
	[self _appendActivity:fileTransferInfo forConnection:transfer.user.connection];
	[fileTransferInfo release];

	if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVAutoAcceptFilesFrom"] == 3)
		[self _setDestinationForTransfer:transfer shouldAsk:NO];
	else if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVAutoAcceptFilesFrom"] == 2) {
//		JVBuddy *buddy = [[MVBuddyListController sharedBuddyList] buddyForNickname:[transfer user] onServer:[(MVChatConnection *)[transfer connection] server]];
//		if (buddy) [self _setDestinationForTransfer:transfer shouldAsk:NO]
//		else [self _setDestinationForTransfer:transfer shouldAsk:YES]
		[self _setDestinationForTransfer:transfer shouldAsk:YES];
	} else if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVAutoAcceptFilesFrom"] == 1)
		[self _setDestinationForTransfer:transfer shouldAsk:YES];

	[_outlineView reloadData];

	[self orderFrontIfNecessary];
}

#pragma mark -

- (id) outlineView:(NSOutlineView *) outlineView child:(NSInteger) childAtIndex ofItem:(id) item {
	if (!item) {
		NSInteger count = 0;
		for (id key in _activity) {
			NSArray *activity = [_activity objectForKey:key];
			if (!activity.count)
				continue;
			if (childAtIndex == count)
				return key;
			count++;
		}
	}

	return [[_activity objectForKey:item] objectAtIndex:childAtIndex];
}

- (BOOL) outlineView:(NSOutlineView *) outlineView isItemExpandable:(id) item {
	return [self _isGroupItem:item]; // top level, shows the connection name
}

- (NSInteger) outlineView:(NSOutlineView *) outlineView numberOfChildrenOfItem:(id) item {
	if (!item) {
		NSUInteger count = 0;
		for (id key in _activity)
			if (((NSArray *)[_activity objectForKey:key]).count)
				count++;
		return count;
	}

	return ((NSArray *)[_activity objectForKey:item]).count;
}

- (id) outlineView:(NSOutlineView *) outlineView objectValueForTableColumn:(NSTableColumn *) tableColumn byItem:(id) item {
	if ([item isKindOfClass:[MVChatConnection class]])
		return ((MVChatConnection *)item).server;
	if (item == CQDirectChatConnectionKey)
		return NSLocalizedString(@"Direct Chat Invites", @"Direct Chat Invites group title");
	if (item == CQDirectDownloadKey)
		return NSLocalizedString(@"Downloads", @"Downloads group title");

	return [item description];
}

- (BOOL) outlineView:(NSOutlineView *) outlineView isGroupItem:(id) item {
	return [self _isGroupItem:item]; // top level, shows the connection name
}

#pragma mark -

- (NSCell *) outlineView:(NSOutlineView *) outlineView dataCellForTableColumn:(NSTableColumn *) tableColumn item:(id) item {
	if ([self _isGroupItem:item]) {
		if (!_groupCell)
			_groupCell = [[CQGroupCell alloc] initTextCell:@""];
		return _groupCell;
	}

	NSString *type = [item objectForKey:@"type"];
	if (type == CQActivityTypeChatInvite || type == CQActivityTypeDirectChatInvite) {
		if (!_titleCell)
			_titleCell = [[CQSubtitleCell alloc] init];
		return _titleCell;
	}

	if (type == CQActivityTypeFileTransfer || type == CQActivityTypeDirectDownload) {
		if (type == CQActivityTypeFileTransfer) {
			MVFileTransfer *transfer = [item objectForKey:@"transfer"];
			if (transfer.status == MVFileTransferNormalStatus) {
				CQDownloadCell *fileTransferCell = [item objectForKey:@"cell"];
				if (!fileTransferCell) {
					// Make a new cell for each file transfer; otherwise we'll be reusing the same progress indicator view for multiple cells.
					fileTransferCell = [[CQDownloadCell alloc] init];
					[item setObject:fileTransferCell forKey:@"cell"];
				}
				return fileTransferCell;
			}
		} else {
			if ([item objectForKey:@"status"] == CQActivityStatusAccepted) {
				CQDownloadCell *fileTransferCell = [item objectForKey:@"cell"];
				if (!fileTransferCell) {
					// Make a new cell for each file transfer; otherwise we'll be reusing the same progress indicator view for multiple cells.
					fileTransferCell = [[CQDownloadCell alloc] init];
					[item setObject:fileTransferCell forKey:@"cell"];
				}
				return fileTransferCell;
			}
		}

		if (!_titleCell)
			_titleCell = [[CQSubtitleCell alloc] init];
		return _titleCell;
	}

	return nil;
}

- (CGFloat) outlineView:(NSOutlineView *) outlineView heightOfRowByItem:(id) item {
	if (item && [self _isGroupItem:item])
		return 19.;

	CQDownloadCell *cell = [item objectForKey:@"cell"];
	if (cell) {
		if ([item objectForKey:@"type"] == CQActivityTypeFileTransfer) {
			if (((MVFileTransfer *)[item objectForKey:@"transfer"]).status == MVFileTransferNormalStatus)
				return 50.;
		} else {
			if ([item objectForKey:@"status"] == CQActivityStatusAccepted)
				return 50.;
		}
	}

	return 40.;
}

- (BOOL) outlineView:(NSOutlineView *) outlineView shouldCollapseItem:(id) item {
	if ([self _shouldExpandOrCollapse]) {
		for (NSDictionary *dictionary in [_activity objectForKey:item]) {
			CQDownloadCell *cell = [dictionary objectForKey:@"cell"];
			if (cell)
				[cell hideProgressIndicator];
		}

		return YES;
	}

	return NO;
}

- (BOOL) outlineView:(NSOutlineView *) outlineView shouldEditTableColumn:(NSTableColumn *) tableColumn item:(id) item {
	return NO;
}

- (BOOL) outlineView:(NSOutlineView *) outlineView shouldExpandItem:(id) item {
	return [self _shouldExpandOrCollapse];
}

- (BOOL) outlineView:(NSOutlineView *) outlineView shouldSelectItem:(id) item {
	return ![self _isGroupItem:item];
}

- (NSString *) outlineView:(NSOutlineView *) outlineView toolTipForCell:(NSCell *) cell rect:(NSRectPointer) rect tableColumn:(NSTableColumn *) tableColumn item:(id) item mouseLocation:(NSPoint) mouseLocation {
	if ([item isKindOfClass:[MVChatConnection class]]) {
		NSUInteger invites = [self _invitationCountForConnection:item];
		NSUInteger fileTransfers = [self _fileTransferCountForConnection:item];
		if (invites) {
			if (invites > 1) {
				if (fileTransfers) {
					if (fileTransfers > 1)
						return [NSString stringWithFormat:NSLocalizedString(@"%ld file transfers and %ld chat room invites on %@", @"tooltip"), fileTransfers, invites, ((MVChatConnection *)item).server];
					return [NSString stringWithFormat:NSLocalizedString(@"1 file transfer and %ld chat room invites on %@", @"tooltip"), invites, ((MVChatConnection *)item).server];
				}
				return [NSString stringWithFormat:NSLocalizedString(@"%ld chat room invites on %@", @"tooltip"), fileTransfers, ((MVChatConnection *)item).server];
			}
			if (fileTransfers) {
				if (fileTransfers > 1)
					return [NSString stringWithFormat:NSLocalizedString(@"%ld file transfers and 1 chat room invite on %@", @"tooltip"), fileTransfers, ((MVChatConnection *)item).server];
				return [NSString stringWithFormat:NSLocalizedString(@"1 file transfer and 1 chat room invite on %@", @"tooltip"), fileTransfers, ((MVChatConnection *)item).server];
			}
			return [NSString stringWithFormat:NSLocalizedString(@"1 chat room invite on %@", @"tooltip"), fileTransfers, ((MVChatConnection *)item).server];
		}
		if (fileTransfers) {
			if (fileTransfers > 1)
				return [NSString stringWithFormat:NSLocalizedString(@"%ld file transfers on %@", @"tooltip"), fileTransfers, ((MVChatConnection *)item).server];
			return [NSString stringWithFormat:NSLocalizedString(@"1 file transfer on %@", @"tooltip"), fileTransfers, ((MVChatConnection *)item).server];
		}
	}
	if (item == CQDirectChatConnectionKey) {
		NSUInteger count = [self _directChatConnectionCount];
		if (count > 1)
			return [NSString stringWithFormat:NSLocalizedString(@"%ld direct chat invitations", @"tooltip"), count];
		return [NSString stringWithFormat:NSLocalizedString(@"1 direct chat invitation", @"tooltip"), count];
	}
	if (item == CQDirectDownloadKey) {
		NSUInteger count = [self _directDownloadCount];
		if (count > 1)
			return [NSString stringWithFormat:NSLocalizedString(@"%ld downloads", @"tooltip"), count];
		return [NSString stringWithFormat:NSLocalizedString(@"1 download", @"tooltip"), count];
	}
	return nil;
}

- (void) outlineView:(NSOutlineView *) outlineView willDisplayCell:(id) cell forTableColumn:(NSTableColumn *) tableColumn item:(id) item {
	if ([cell isKindOfClass:[CQGroupCell class]]) {
		CQGroupCell *groupCell = (CQGroupCell *)cell;
		if (item == CQDirectChatConnectionKey)
			groupCell.title = NSLocalizedString(@"Direct Chat Invites", @"Direct Chat Invites group title");
		else if (item == CQDirectDownloadKey)
			groupCell.title = NSLocalizedString(@"Downloads", @"Downloads group title");
		else groupCell.title = ((MVChatConnection *)item).server;
		groupCell.unansweredActivityCount = [outlineView isItemExpanded:item] ? 0 :((NSArray *)[_activity objectForKey:item]).count;

		return;
	}

	CQTitleCell *titleCell = (CQTitleCell *)cell;
	titleCell.leftButtonCell.target = self;
	titleCell.rightButtonCell.target = self;

	NSString *title = nil;
	NSString *subtitle = nil;
	BOOL hidesLeftButton = NO;
	NSString *titleFormat = nil;

	NSString *type = [item objectForKey:@"type"];
	MVChatUser *user = [item objectForKey:@"user"];
	NSDate *date = [item objectForKey:@"date"];
	NSMutableDictionary *mouseStates = [[NSMutableDictionary alloc] init];
	if (type == CQActivityTypeChatInvite) {
		[mouseStates setObject:[_cellImages objectForKey:@"x"] forKey:CQDualButtonRightDictionaryKey];

		NSString *status = [item objectForKey:@"status"];
		if (status == CQActivityStatusAccepted) {
			titleFormat = NSLocalizedString(@"Joined %@ on %@", @"cell label text format");
			// subtitle:@"lastMessageHere";

			titleCell.leftButtonCell.action = @selector(showChatPanel:);
			titleCell.rightButtonCell.action = @selector(removeRowFromWindow:);

			[mouseStates setObject:[_cellImages objectForKey:@"magnifying"] forKey:CQDualButtonLeftDictionaryKey];
		} else if (status == CQActivityStatusPending) {
			titleFormat = NSLocalizedString(@"Invited to %@ on %@", @"cell label text format");
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"By %@ at %@", @"by (user) at (time) cell label subtitle text"), user.nickname, [_timeFormatter stringFromDate:date]];

			titleCell.leftButtonCell.action = @selector(acceptChatInvite:);
			titleCell.rightButtonCell.action = @selector(rejectChatInvite:);

			[mouseStates setObject:[_cellImages objectForKey:@"check"] forKey:CQDualButtonLeftDictionaryKey];
		} else if (status == CQActivityStatusRejected) {
			titleFormat = NSLocalizedString(@"Ignored invite to %@ on %@", @"Ignored invite to (room) on (server) cell label text format");
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"Invited by %@ at %@", @"by (user) at (time) cell label subtitle text"), user.nickname, [_timeFormatter stringFromDate:date]];

			titleCell.leftButtonCell.action = @selector(requestChatInvite:);
			titleCell.rightButtonCell.action = @selector(removeRowFromWindow:);

			[mouseStates setObject:[_cellImages objectForKey:@"retry"] forKey:CQDualButtonLeftDictionaryKey];
		}

		title = [[NSString alloc] initWithFormat:titleFormat, [item objectForKey:@"room"], ((MVChatConnection *)[_outlineView parentForItem:item]).server];
	}

	if (type == CQActivityTypeDirectChatInvite) {
		[mouseStates setObject:[_cellImages objectForKey:@"x"] forKey:CQDualButtonRightDictionaryKey];

		MVDirectChatConnection *connection = [item objectForKey:@"connection"];
		switch (connection.status) {
		case MVDirectChatConnectionConnectedStatus:
			titleFormat = NSLocalizedString(@"Accepted direct chat with %@", @"cell label text format");
			// subtitle:show last chat line

			titleCell.leftButtonCell.action = @selector(showChatPanel:);
			titleCell.rightButtonCell.action = @selector(removeRowFromWindow:);

			[mouseStates setObject:[_cellImages objectForKey:@"magnifying"] forKey:CQDualButtonLeftDictionaryKey];
			break;
		case MVDirectChatConnectionWaitingStatus:
			titleFormat = NSLocalizedString(@"Direct chat request from %@", @"cell label text format");
			// show shared chat rooms

			titleCell.leftButtonCell.action = @selector(acceptChatInvite:);
			titleCell.rightButtonCell.action = @selector(rejectChatInvite:);

			[mouseStates setObject:[_cellImages objectForKey:@"check"] forKey:CQDualButtonLeftDictionaryKey];
			break;
		case MVDirectChatConnectionDisconnectedStatus:
			hidesLeftButton = YES;
			titleFormat = NSLocalizedString(@"Ended direct chat with %@", @"cell label text format");
			// show last chat line

			titleCell.leftButtonCell.action = @selector(showChatPanel:);
			titleCell.rightButtonCell.action = @selector(removeRowFromWindow:);

			[mouseStates setObject:[_cellImages objectForKey:@"magnifying"] forKey:CQDualButtonLeftDictionaryKey];
			break;
		case MVDirectChatConnectionErrorStatus:
			titleFormat = NSLocalizedString(@"Error during direct chat with %@", @"cell label text format");
			// show error reason

			titleCell.leftButtonCell.action = @selector(requestChatInvite:);
			titleCell.rightButtonCell.action = @selector(removeRowFromWindow:);

			[mouseStates setObject:[_cellImages objectForKey:@"retry"] forKey:CQDualButtonLeftDictionaryKey];
			break;
		}

		title = [[NSString alloc] initWithFormat:titleFormat, connection.user.displayName];
	}

	if (type == CQActivityTypeDirectDownload) {
		NSString *size = MVPrettyFileSize([[item objectForKey:@"size"] unsignedLongLongValue]);
		NSString *transferred = MVPrettyFileSize([[item objectForKey:@"transferred"] unsignedLongLongValue]);
		NSString *rate = MVPrettyFileSize([[item objectForKey:@"rate"] unsignedLongLongValue]);
		CQFileSize remainingBytes = [[item objectForKey:@"size"] unsignedLongLongValue] - [[item objectForKey:@"transferred"] unsignedLongLongValue];
		CQFileSize rateValue = [[item objectForKey:@"rate"] unsignedLongLongValue];
		NSString *eta = nil;
		if (rateValue) {
			NSTimeInterval etaValue = [[NSDate date] timeIntervalSince1970] + (remainingBytes / rateValue);
			eta = MVReadableTime(etaValue, YES);
		}
		NSError *error = [item objectForKey:@"error"];

		title = [[[item objectForKey:@"path"] lastPathComponent] retain];

		NSString *status = [item objectForKey:@"status"];
		BOOL rightButtonActionSet = NO;
		BOOL removeProgressIndicatorFromScreen = YES;
		if (status == CQActivityStatusError) {
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"%@ of %@ (%@ - %ld)", @"x bytes of y bytes (error domain, error code) subtitle"), transferred, size, error.domain, error.code];
			titleCell.leftButtonCell.action = @selector(retryDownload:);

			[mouseStates setObject:[_cellImages objectForKey:@"retry"] forKey:CQDualButtonLeftDictionaryKey];
		} else if (status == CQActivityStatusFinished) {
			subtitle = [size retain];
			hidesLeftButton = YES;
			[item removeObjectForKey:@"cell"];
		} else if (status == CQActivityStatusAccepted) {
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"%@ of %@ (%@/sec) — %@", @"x bytes of y bytes, (rate) - eta subtitle"), transferred, size, rate, eta];
			CQDownloadCell *downloadCell = [item objectForKey:@"cell"];
			CQFileSize transferred = [[item objectForKey:@"transferred"] unsignedLongLongValue];
			CQFileSize size = [[item objectForKey:@"size"] unsignedLongLongValue];
			downloadCell.progressIndicator.doubleValue = ((double)transferred / (double)size);
			titleCell.leftButtonCell.action = @selector(cancelDownload:);

			[mouseStates setObject:[_cellImages objectForKey:@"x"] forKey:CQDualButtonLeftDictionaryKey];
			removeProgressIndicatorFromScreen = NO;
		} else if (status == CQActivityStatusPending) {
			subtitle = NSLocalizedString(@"Preparing to download.", @"Preparing to download subtitle");
			hidesLeftButton = YES;
			titleCell.rightButtonCell.action = @selector(cancelDownload:);
			rightButtonActionSet = YES;

			[mouseStates setObject:[_cellImages objectForKey:@"x"] forKey:CQDualButtonRightDictionaryKey];
		} else if (status == CQActivityStatusRejected) {
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"%@ of %@ — stopped", @"x bytes of y bytes - stopped subtitle"), transferred, size];
			titleCell.leftButtonCell.action = @selector(retryDownload:);

			[mouseStates setObject:[_cellImages objectForKey:@"retry"] forKey:CQDualButtonLeftDictionaryKey];
		}

		if (!rightButtonActionSet) {
			titleCell.rightButtonCell.action = @selector(showFileInFinder:);

			[mouseStates setObject:[_cellImages objectForKey:@"magnifying"] forKey:CQDualButtonRightDictionaryKey];
		}

		if (removeProgressIndicatorFromScreen) {
			CQDownloadCell *downloadCell = [item objectForKey:@"cell"];
			[downloadCell hideProgressIndicator];
		}
	}

	if (type == CQActivityTypeFileTransfer) {
		MVFileTransfer *transfer = [item objectForKey:@"transfer"];
		NSString *size = MVPrettyFileSize(transfer.finalSize);
		NSString *transferred = MVPrettyFileSize(transfer.transferred);
		NSString *rate = MVPrettyFileSize([[item objectForKey:@"rate"] unsignedLongLongValue]);
		CQFileSize remainingBytes = transfer.finalSize - transfer.transferred;
		CQFileSize rateValue = [[item objectForKey:@"rate"] unsignedLongLongValue];
		NSString *eta = nil;
		if (rateValue) {
			NSTimeInterval etaValue = [[NSDate date] timeIntervalSince1970] + (remainingBytes / rateValue);
			eta = MVReadableTime(etaValue, YES);
		}
		NSError *error = transfer.lastError;

		if ([transfer isDownload])
			title = [((MVDownloadFileTransfer *)transfer).originalFileName retain];
		else title = [[((MVUploadFileTransfer *)transfer).source lastPathComponent] retain];

		BOOL rightButtonActionSet = NO;
		CQDownloadCell *downloadCell = nil;
		switch (transfer.status) {
		case MVFileTransferErrorStatus:
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"%@ of %@ (%@ - %ld)", @"x bytes of y bytes (error domain, error code) subtitle"), transferred, size, error.domain, error.code];
			hidesLeftButton = YES;
			break;
		case MVFileTransferDoneStatus:
			subtitle = [size retain];
			hidesLeftButton = YES;
			break;
		case MVFileTransferNormalStatus:
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"%@ of %@ (%@/sec) — %@", @"x bytes of y bytes, (rate) - eta subtitle"), transferred, size, rate, eta];
			downloadCell = [item objectForKey:@"cell"];
			downloadCell.progressIndicator.doubleValue = (transfer.transferred / transfer.finalSize);
			titleCell.leftButtonCell.action = @selector(cancelFileTransfer:);

			[mouseStates setObject:[_cellImages objectForKey:@"x"] forKey:CQDualButtonLeftDictionaryKey];
			break;
		case MVFileTransferHoldingStatus:
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"From %@ on %@", @"From %@ on %@ subtitle"), transfer.user.nickname, transfer.user.connection.server];
			titleCell.leftButtonCell.action = @selector(acceptFileTransfer:);
			titleCell.rightButtonCell.action = @selector(rejectFileTransfer:);
			rightButtonActionSet = YES;
			break;
		case MVFileTransferStoppedStatus:
			subtitle = [[NSString alloc] initWithFormat:NSLocalizedString(@"%@ of %@ — stopped", @"x bytes of y bytes - stopped subtitle"), transferred, size];
			hidesLeftButton = YES;
			break;
		}

		if (!rightButtonActionSet) {
			titleCell.rightButtonCell.action = @selector(showFileInFinder:);
			[mouseStates setObject:[_cellImages objectForKey:@"magnifying"] forKey:CQDualButtonRightDictionaryKey];
		}
	}

	if (hidesLeftButton) {
		titleCell.hidesLeftButton = YES;
		titleCell.leftButtonCell.action = NULL;
	} else titleCell.hidesLeftButton = NO;

	titleCell.titleText = title;
	[title release];

	if ([cell respondsToSelector:@selector(setSubtitleText:)]) {
		[cell setSubtitleText:subtitle];
		[subtitle release];
	}

	titleCell.mouseStates = mouseStates;
	[mouseStates release];
}

#pragma mark -

- (NSString *) panel:(id) sender userEnteredFilename:(NSString *) filename confirmed:(BOOL) confirmed {
	return (confirmed ? [filename stringByAppendingString:@".colloquyFake"] :filename);
}

#pragma mark -

- (id) _itemForTransfer:(MVFileTransfer *) transfer {
	for (NSDictionary *activity in [_activity objectForKey:transfer.user.connection]) {
		if ([activity objectForKey:@"type"] != CQActivityTypeFileTransfer)
			continue;
		if ([activity objectForKey:@"transfer"] == transfer)
			return activity;
	}
	return nil;
}

- (void) _setDestination:(NSString *) destination forTransfer:(MVDownloadFileTransfer *) transfer checkIfFileExists:(BOOL) checkIfFileExists {
	if (!destination.length)
		destination = transfer.destination;

	BOOL resumeIfPossible = YES;
	if (checkIfFileExists) {
		if ([[NSFileManager defaultManager] fileExistsAtPath:destination]) {
			NSNumber *size = [[[NSFileManager defaultManager] attributesOfItemAtPath:destination error:nil] objectForKey:NSFileSize];
			if (size.unsignedLongLongValue < transfer.finalSize) {
//				if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVFileExists"] == 1) // auto resume, do nothing
				if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVFileExists"] == 2) // auto cancel
					return;
				else if ([[NSUserDefaults standardUserDefaults] integerForKey:@"JVFileExists"] == 3) // auto overwrite
					resumeIfPossible = NO; // and fall through
				else {
					NSInteger result = NSRunAlertPanel(NSLocalizedString(@"Save", "save dialog title"), NSLocalizedString(@"The file %@ in %@ already exists. Would you like to resume from where a previous transfer stopped or replace it?", "replace or resume transfer save dialog message"), NSLocalizedString(@"Resume", "resume button name"), NSLocalizedString(@"Replace", "replace button name"), NSLocalizedString(@"Save As…", "save as button name"), NSLocalizedString(@"Cancel", "cancel button"), [[NSFileManager defaultManager] displayNameAtPath:destination], [destination stringByDeletingLastPathComponent]);
					if (result == 4) // cancel
						return;
					if (result == 3) { // save as
						[self _setDestinationForTransfer:transfer shouldAsk:YES];
						return;
					}
					if (result == 2) // replace
						resumeIfPossible = NO;
					// else if (result == 1) // resume, do nothing
				}
			} else {
				NSInteger result = NSRunAlertPanel(NSLocalizedString(@"Save", "save dialog title"), NSLocalizedString(@"The file %@ in %@ already exists and can't be resumed. Replace it?", "replace transfer save dialog message"), NSLocalizedString(@"Replace", "replace button name"), NSLocalizedString(@"Save As…", "save as button name"), NSLocalizedString(@"Cancel", "cancel button"), nil, [[NSFileManager defaultManager] displayNameAtPath:destination], [destination stringByDeletingLastPathComponent]);
				if (result == 2) { // save as
					[self _setDestinationForTransfer:transfer shouldAsk:YES];
					return;
				}
				if (result == 3) // cancel
					return;
				if (result == 1) // replace
					resumeIfPossible = NO;
			}
		}
	} else resumeIfPossible = NO;

	[transfer setDestination:destination renameIfFileExists:NO];
	[transfer acceptByResumingIfPossible:resumeIfPossible];

	[_outlineView reloadItem:[self _itemForTransfer:transfer]];
}

- (void) _fileSavePanelDidEnd:(NSSavePanel *) savePanel returnCode:(int) returnCode contextInfo:(void *) context {
	if (returnCode == NSCancelButton)
		return;

	MVFileTransfer *transfer = (MVFileTransfer *)context;
	[self _setDestination:savePanel.URL.absoluteString forTransfer:(MVDownloadFileTransfer *)transfer checkIfFileExists:NO];
}

- (void) _setDestinationForTransfer:(MVFileTransfer *) transfer shouldAsk:(BOOL) shouldAsk {
	MVDownloadFileTransfer *downloadFileTransfer = (MVDownloadFileTransfer *)transfer;
	if ([[NSUserDefaults standardUserDefaults] boolForKey:@"JVAskForTransferSaveLocation"] || shouldAsk) {
		NSSavePanel *savePanel = [NSSavePanel savePanel];
		savePanel.nameFieldLabel = downloadFileTransfer.originalFileName;
		[savePanel beginSheetForDirectory:[MVFileTransferController userPreferredDownloadFolder] file:downloadFileTransfer.originalFileName modalForWindow:nil modalDelegate:self didEndSelector:@selector(_fileSavePanelDidEnd:returnCode:contextInfo:) contextInfo:transfer];

		return;
	}

	[self _setDestination:[[MVFileTransferController userPreferredDownloadFolder] stringByAppendingPathComponent:downloadFileTransfer.originalFileName] forTransfer:downloadFileTransfer checkIfFileExists:YES];
}

#pragma mark -

- (void) cancelFileTransfer:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	if ([item objectForKey:@"type"] != CQActivityTypeFileTransfer)
		return;
	MVFileTransfer *transfer = [item objectForKey:@"transfer"];
	[transfer cancel];
	[_outlineView reloadItem:item];
}

- (void) acceptFileTransfer:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	MVDownloadFileTransfer *transfer = [item objectForKey:@"transfer"];
	[self _setDestinationForTransfer:transfer shouldAsk:NO];
}

- (void) rejectFileTransfer:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	MVDownloadFileTransfer *transfer = [item objectForKey:@"transfer"];
	[transfer reject];
	[_outlineView reloadItem:item];
}

#pragma mark -

- (void) showFileInFinder:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	NSString *file = nil;

	if ([item objectForKey:@"type"] == CQActivityTypeFileTransfer) {
		MVFileTransfer *transfer = [item objectForKey:@"transfer"];
		if ([transfer isUpload]) {
			NSString *source = ((MVUploadFileTransfer *)transfer).source;
			file = [source stringByReplacingOccurrencesOfString:[source lastPathComponent] withString:@""];
		} else file = ((MVDownloadFileTransfer *)transfer).destination;
	} else file = [item objectForKey:@"path"];

	[[NSWorkspace sharedWorkspace] selectFile:file inFileViewerRootedAtPath:@""];
}

#pragma mark -

- (void) cancelDownload:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	[[item objectForKey:@"download"] cancel];
	[item setObject:CQActivityStatusRejected forKey:@"status"];
	[_outlineView reloadData];
}

- (void) retryDownload:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	if ([item objectForKey:@"status"] == CQActivityStatusPending)
		return;

	WebDownload *oldDownload = [item objectForKey:@"download"];
	WebDownload *newDownload = nil;
	if (oldDownload.resumeData.length)
		newDownload = [[WebDownload alloc] initWithResumeData:oldDownload.resumeData delegate:self path:[item objectForKey:@"path"]];
	else newDownload = [[WebDownload alloc] initWithRequest:[NSURLRequest requestWithURL:oldDownload.request.URL] delegate:self];
	[item setObject:newDownload forKey:@"download"];
	[item setObject:CQActivityStatusPending forKey:@"status"];
	[newDownload release];
	[_outlineView reloadData];
}

#pragma mark -

- (void) acceptChatInvite:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	if ([item objectForKey:@"type"] == CQDirectChatConnectionKey) {
		MVDirectChatConnection *connection = [_outlineView parentForItem:item];
		[[JVChatController defaultController] chatViewControllerForDirectChatConnection:connection ifExists:NO userInitiated:NO];
		[connection initiate];

		return;
	}

	id room = [item objectForKey:@"room"];
	if ([room isKindOfClass:[MVChatRoom class]]) room = ((MVChatRoom *)room).name;
	[[_outlineView parentForItem:item] joinChatRoomNamed:room];
	[item setObject:CQActivityStatusAccepted forKey:@"status"];

	[_outlineView reloadItem:item];
}

- (void) rejectChatInvite:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	[item setObject:[NSDate date] forKey:@"date"];
	[item setObject:CQActivityStatusRejected forKey:@"status"];
	[_outlineView reloadItem:item];
}

- (void) requestChatInvite:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	if ([item objectForKey:@"type"] == CQDirectChatConnectionKey) {
		// start a new dcc chat

		return;
	}

	// /knock
}

#pragma mark -

- (void) showChatPanel:(id) sender {
	
}

- (void) removeRowFromWindow:(id) sender {
	id item = [_outlineView itemAtRow:[sender clickedRow]];
	if ([item objectForKey:@"type"] == CQActivityTypeFileTransfer)
		[item removeObjectForKey:@"cell"];
	[[_activity objectForKey:[_outlineView parentForItem:item]] removeObjectIdenticalTo:item];
	[_outlineView reloadData];
}

#pragma mark -

- (NSUInteger) _countForType:(NSString *) type inConnection:(id) connection {
	NSUInteger count = 0;
	for (NSDictionary *dictionary in [_activity objectForKey:connection])
		if ([dictionary objectForKey:@"type"] == type)
			count++;
	return count;
}

- (NSUInteger) _directChatConnectionCount {
	return [self _countForType:CQActivityTypeDirectChatInvite inConnection:CQDirectChatConnectionKey];
}

- (NSUInteger) _directDownloadCount {
	return [self _countForType:CQActivityTypeDirectDownload inConnection:CQDirectDownloadKey];
}

- (NSUInteger) _fileTransferCountForConnection:(MVChatConnection *) connection {
	return [self _countForType:CQActivityTypeFileTransfer inConnection:connection];
}

- (NSUInteger) _invitationCountForConnection:(MVChatConnection *) connection {
	return [self _countForType:CQActivityTypeChatInvite inConnection:connection];
}

#pragma mark -

- (BOOL) _isGroupItem:(id) item {
	return ([item isKindOfClass:[MVChatConnection class]] || item == CQDirectChatConnectionKey || item == CQDirectDownloadKey);
}

- (BOOL) _shouldExpandOrCollapse {
	if (!_rowLastClickedTime) {
		_rowLastClickedTime = [NSDate timeIntervalSinceReferenceDate];

		return YES;
	}

	NSTimeInterval currentTime = [NSDate timeIntervalSinceReferenceDate];
	BOOL shouldExpandOrCollapse = ((currentTime - _rowLastClickedTime) > CQExpandCollapseRowInterval);

	_rowLastClickedTime = currentTime;

	return shouldExpandOrCollapse;
}

#pragma mark -

- (void) _appendActivity:(NSDictionary *) activity forConnection:(id) connection {
	NSMutableArray *activities = [_activity objectForKey:connection];
	NSString *type = [activity objectForKey:@"type"];
	if (type == CQActivityTypeFileTransfer || type == CQActivityTypeDirectDownload) // file transfers are sorted by time added, so just add to the end
		[activities addObject:activity];

	if (type == CQActivityTypeChatInvite) {
		NSUInteger insertionPoint = 0;
		for (NSDictionary *existingActivity in activities) {
			type = [existingActivity objectForKey:@"type"];
			if (type == CQActivityTypeFileTransfer || type == CQActivityTypeDirectDownload) // File transfers are at the end and we want to insert above it
				break;

			if (type == CQActivityTypeChatInvite)
				continue;

			if ([[activity objectForKey:@"room"] compare:[existingActivity objectForKey:@"room"]] == NSOrderedDescending)
				insertionPoint++;
			else break;
		}

		[activities insertObject:activity atIndex:insertionPoint];
	}

	if (type == CQActivityTypeDirectChatInvite) {
		NSUInteger insertionPoint = 0;
		id newUser = [activity objectForKey:@"user"];
		for (NSDictionary *existingActivity in activities) {
			if ([newUser compare:[existingActivity objectForKey:@"user"]] != NSOrderedDescending) // multiple dcc chat sessions for the same username are valid, added to the end, after the current ones.
				insertionPoint++;
			else break;
		}

		[activities insertObject:activity atIndex:insertionPoint];
	}
}
@end