/*
 * Copyright 2011 Sven Weidauer <sven.weidauer@gmail.com>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#import "cocoa/apple_image.h"
#import "cocoa/NetsurfApp.h"
#import "cocoa/gui.h"
#import "cocoa/plotter.h"
#import "cocoa/DownloadWindowController.h"
#import "cocoa/SearchWindowController.h"
#import "cocoa/selection.h"
#import "cocoa/fetch.h"

#import "utils/filename.h"
#import "utils/log.h"
#import "utils/messages.h"
#import "utils/utils.h"
#import "content/urldb.h"
#import "utils/nsoption.h"
#import "desktop/plotters.h"
#import "desktop/save_complete.h"
#import "desktop/textinput.h"
#import "desktop/tree.h"
#import "render/html.h"
#import "desktop/mouse.h"
#import "desktop/netsurf.h"

#ifndef NETSURF_HOMEPAGE
#define NETSURF_HOMEPAGE "http://www.netsurf-browser.org/welcome/"
#endif

@implementation NetSurfApp

@synthesize frontTab;

static bool cocoa_done = false;

/**
 * Cause an abnormal program termination.
 *
 * \note This never returns and is intended to terminate without any cleanup.
 *
 * \param error The message to display to the user.
 */
static void die(const char * const error)
{
	[NSException raise: @"NetsurfDie" format: @"Error: %s", error];
}

- (void) loadOptions;
{
	NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
	[defaults registerDefaults: [NSDictionary dictionaryWithObjectsAndKeys: 
								 cocoa_get_user_path( @"Cookies" ), kCookiesFileOption,
								 cocoa_get_user_path( @"URLs" ), kURLsFileOption,
								 [NSString stringWithUTF8String: NETSURF_HOMEPAGE], kHomepageURLOption,
								 nil]];
	
	
	nsoption_setnull_charp(cookie_file, strdup( [[defaults objectForKey: kCookiesFileOption] UTF8String] ));

	nsoption_setnull_charp(cookie_jar, strdup( nsoption_charp(cookie_file) ));

	nsoption_setnull_charp(homepage_url, strdup( [[defaults objectForKey: kHomepageURLOption] UTF8String] ));

	urldb_load( [[defaults objectForKey: kURLsFileOption] UTF8String] );
	urldb_load_cookies( nsoption_charp(cookie_file) );
	
	cocoa_update_scale_factor();
}

- (void) saveOptions;
{
	urldb_save_cookies( nsoption_charp(cookie_file) );
	urldb_save( [[[NSUserDefaults standardUserDefaults] objectForKey: kURLsFileOption] UTF8String] );
}

- (void) run;
{
	[self finishLaunching];

	[self loadOptions];

    while (!cocoa_done) {
        cocoa_autorelease();

        NSEvent *event = [NSApp nextEventMatchingMask: NSAnyEventMask
                                            untilDate: [NSDate distantFuture]
                                               inMode: NSDefaultRunLoopMode
                                              dequeue: YES];
        if (nil != event) {
            [NSApp sendEvent: event];
            [NSApp updateWindows];
        }

    }

	[self saveOptions];
}

-(void) terminate: (id)sender;
{
	[[NSNotificationCenter defaultCenter] postNotificationName:NSApplicationWillTerminateNotification object:self];
	
	cocoa_done = true;
	[self postEvent: [NSEvent otherEventWithType: NSApplicationDefined
                                        location: NSZeroPoint
								   modifierFlags: 0
                                       timestamp: 0
                                    windowNumber: 0
                                         context: NULL
										 subtype: 0
                                           data1: 0
                                           data2: 0]
			atStart: YES];
}

@end

#pragma mark -

static NSString *cocoa_get_preferences_path( void )
{
	NSArray *paths = NSSearchPathForDirectoriesInDomains( NSApplicationSupportDirectory, NSUserDomainMask, YES );
	NSCAssert( [paths count] >= 1, @"Where is the application support directory?" );
	
	NSString *netsurfPath = [[paths objectAtIndex: 0] stringByAppendingPathComponent: @"NetSurf"];
	
	NSFileManager *fm = [NSFileManager defaultManager];
	BOOL isDirectory = NO;
	BOOL exists = [fm fileExistsAtPath: netsurfPath isDirectory: &isDirectory];
	
	if (!exists) {
		exists = [fm createDirectoryAtPath: netsurfPath withIntermediateDirectories: YES attributes: nil error: NULL];
		isDirectory = YES;
	}
	if (!(exists && isDirectory)) {
		die( "Cannot create netsurf preferences directory" );
	}
	
	return netsurfPath;
}

NSString *cocoa_get_user_path( NSString *fileName ) 
{
	return [cocoa_get_preferences_path() stringByAppendingPathComponent: fileName];
}

static const char *cocoa_get_options_file( void )
{
	NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
	[defaults registerDefaults: [NSDictionary dictionaryWithObjectsAndKeys: 
								 cocoa_get_user_path( @"Options" ), kOptionsFileOption,
								 nil]];
	
	return [[defaults objectForKey: kOptionsFileOption] UTF8String];
}

static NSApplication *cocoa_prepare_app( void )
{
	if (NSApp != nil) return NSApp;
	
	NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
	Class principalClass =  NSClassFromString([infoDictionary objectForKey:@"NSPrincipalClass"]);
	NSCAssert([principalClass respondsToSelector:@selector(sharedApplication)], @"Principal class must implement sharedApplication.");
	[principalClass sharedApplication];
	
	NSString *mainNibName = [infoDictionary objectForKey:@"NSMainNibFile"];
	NSNib *mainNib = [[NSNib alloc] initWithNibNamed:mainNibName bundle:[NSBundle mainBundle]];
	[mainNib instantiateNibWithOwner:NSApp topLevelObjects:nil];
	[mainNib release];
	
	return NSApp;
}

void cocoa_autorelease( void )
{
	static NSAutoreleasePool *pool = nil;
	[pool release];
	pool = [[NSAutoreleasePool alloc] init];
}

/**
 * Set option defaults for cocoa frontend
 *
 * @param defaults The option table to update.
 * @return error status.
 */
static nserror set_defaults(struct nsoption_s *defaults)
{
	/* Set defaults for absent option strings */
	const char * const ca_bundle = [[[NSBundle mainBundle] pathForResource: @"ca-bundle" ofType: @""] UTF8String];

	nsoption_setnull_charp(ca_bundle, strdup(ca_bundle));

        return NSERROR_OK;
}

int main( int argc, char **argv )
{
	nsurl *url;
	nserror error;
	struct netsurf_table cocoa_table = {
		.browser = cocoa_browser_table,
		.window = cocoa_window_table,
		.clipboard = cocoa_clipboard_table,
		.download = cocoa_download_table,
		.fetch = cocoa_fetch_table,
        .search = cocoa_search_table,
	};

	cocoa_autorelease();

    error = netsurf_register(&cocoa_table);
    if (error != NSERROR_OK) {
        die("NetSurf operation table failed registration");
    }
		
	const char * const messages = [[[NSBundle mainBundle] pathForResource: @"Messages" ofType: @""] UTF8String];
	const char * const options = cocoa_get_options_file();

	/* initialise logging. Not fatal if it fails but not much we
	 * can do about it either.
	 */
	nslog_init(NULL, &argc, argv);

	/* user options setup */
	error = nsoption_init(set_defaults, &nsoptions, &nsoptions_default);
	if (error != NSERROR_OK) {
		die("Options failed to initialise");
	}
	nsoption_read(options, NULL);
	nsoption_commandline(&argc, argv, NULL);

	/* common initialisation */
        error = netsurf_init(messages, NULL);
	if (error != NSERROR_OK) {
		die("NetSurf failed to initialise");
	}

	/* Initialise filename allocator */
	filename_initialise();

	(void)apple_image_init();
	
	NSApplication *app = cocoa_prepare_app();
	
	for (int i = 1; i < argc; i++) {
		/* skip -psn_* and other possible options */
		if (argv[i][0] == '-')
			continue;

                error = nsurl_create(argv[i], &url);
                if (error == NSERROR_OK) {
                        error = browser_window_create(BW_CREATE_HISTORY,
                                                      url,
                                                      NULL,
                                                      NULL,
                                                      NULL);
                        nsurl_unref(url);
                }
                if (error != NSERROR_OK) {
                        warn_user(messages_get_errorcode(error), 0);
                }
	}

	[app run];
	
	netsurf_exit();
	
	return 0;
}