//

//  GrowlSafariLoader.m

//  GrowlSafari

//

//  Created by Peter Hosey on 2009-06-14.

//  Copyright 2009 Peter Hosey. All rights reserved.

//

#import "GrowlSafariLoader.h"

#import "InterestingBundleIdentifiers.h"

@interface GrowlSafariLoader ()

- (void) workspaceDidLaunchApplication:(NSNotification *)notification;

@end

@implementation GrowlSafariLoader

- (id) init {

	if((self = [super init])) {

		workspace = [[NSWorkspace sharedWorkspace] retain];

		NSNotificationCenter *nc = [workspace notificationCenter];

		NSLog(@"Adding %@ as an observer on %@ for %@ with object %@", self, nc, NSWorkspaceDidLaunchApplicationNotification, workspace);

		[nc addObserver:self

			   selector:@selector(workspaceDidLaunchApplication:)

				   name:NSWorkspaceDidLaunchApplicationNotification

				 object:nil];

	}

	return self;

}

- (void) dealloc {

	NSNotificationCenter *nc = [workspace notificationCenter];

	[nc removeObserver:self

				  name:NSWorkspaceDidLaunchApplicationNotification

				object:workspace];

	[workspace release];

	[super dealloc];

}

- (void) applicationDidFinishLaunching:(NSNotification *)notification {

	//Scan for running Safari instances, and send ourselves messages as if NSWorkspace had posted notifications about them.

	NSEnumerator *appsEnum = [[workspace launchedApplications] objectEnumerator];

	NSDictionary *appDict;

	while ((appDict = [appsEnum nextObject])) {

		NSNotification *notification = [NSNotification notificationWithName:NSWorkspaceDidLaunchApplicationNotification object:workspace userInfo:appDict];

		[self workspaceDidLaunchApplication:notification];

	}

}

- (BOOL) isOnSnowLeopardOrLater {

	OSStatus err;

	SInt32 majorOSVersion = 10, minorOSVersion = 0;

	err = Gestalt(gestaltSystemVersionMajor, &majorOSVersion);

	NSAssert2(err == noErr, @"Could not get operating-system major version number: %li/%s", (long)err, GetMacOSStatusCommentString(err));

	err = Gestalt(gestaltSystemVersionMinor, &minorOSVersion);

	NSAssert2(err == noErr, @"Could not get operating-system minor version number: %li/%s", (long)err, GetMacOSStatusCommentString(err));

	return (majorOSVersion == 10 && minorOSVersion >= 6) || (majorOSVersion > 10);

}

- (void) workspaceDidLaunchApplication:(NSNotification *)notification {

	NSDictionary *launchedProcessInfo = [notification userInfo];

	NSString *bundleID = [launchedProcessInfo objectForKey:@"NSApplicationBundleIdentifier"];

	if (bundleID && ([bundleID caseInsensitiveCompare:SAFARI_BUNDLE_ID] == NSOrderedSame) || ([bundleID caseInsensitiveCompare:WEBKIT_LAUNCHER_BUNDLE_ID] == NSOrderedSame)) {

		NSString *bundlePath = [[NSBundle bundleForClass:[self class]] pathForResource:@"GrowlSafari" ofType:@"bundle"];

		if (bundlePath) {

			NSNumber *PIDNum = [launchedProcessInfo objectForKey:@"NSApplicationProcessIdentifier"];

			pid_t pid = [PIDNum intValue];

			NSArray *arguments = [NSArray arrayWithObjects:

				@"-arch",

#if defined(__i386__)

				@"i386",

#elif defined(__x86_64__)

				//Safari did not exist in x86_64 before Snow Leopard, so, on older versions of Mac OS X, run the helper as i386.

				[self isOnSnowLeopardOrLater] ? @"x86_64" : @"i386",

#elif defined(__ppc__)

				@"ppc",

#else

#error Unsupported architecture

#endif

				[[NSBundle bundleForClass:[self class]] pathForAuxiliaryExecutable:@"GrowlSafariHelper"],

				[NSString stringWithFormat:@"%d", pid],

				nil];

			NSTask *task = [[[NSTask alloc] init] autorelease];

			[task setLaunchPath:@"/usr/bin/arch"];

			[task setArguments:arguments];

			[task launch];

		}

	}

}

@end