/*
 * Copyright 2022 Anthony Cohn-Richardby <anthonyc@gmx.co.uk>
 *
 * 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 <Foundation/Foundation.h>
#import <AppKit/AppKit.h>
#import "netsurf/netsurf.h"
#import "utils/nsoption.h"
#import "utils/nsurl.h"
#import "utils/log.h"

#import "AppDelegate.h"
#import "BrowserWindowController.h"
#import "tables/tables.h"
#import "tables/misc.h"
#import "netsurf/browser_window.h"
#import "DownloadsWindowController.h"
#import "FindPanelController.h"
#import "HistoryWindowController.h"
#import "Website.h"
#import "BookmarkFolder.h"
#import "BookmarksWindowController.h"
#import "PreferencesWindowController.h"
#import "Preferences.h"

#define MAX_RECENT_HISTORY 10

/**
 * Set option defaults for (taken from the 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];
	if (ca_bundle == NULL) {
		return NSERROR_BAD_URL;
	}

        nsoption_setnull_charp(ca_bundle, strdup(ca_bundle));
        return NSERROR_OK;
}


@implementation AppDelegate 


-(void)applicationDidFinishLaunching: (NSNotification*)aNotification
{
	[NSApp setServicesProvider:self];
	[NSBundle loadNibNamed: @"Menu" owner: NSApp];
	[self clearBrowsingHistory];
}

-(void)historyUpdated: (NSNotification*)aNotification {
	NSLog(@"history updated... %@", aNotification);
	id object = [aNotification object];
	NSMenu *historyMenu = [[[NSApp menu] itemWithTag: TAG_SUBMENU_HISTORY] submenu];
	
	if ([object isKindOfClass: [Website class]]) {
		[recentHistory insertObject: object atIndex: 0];
		NSMenuItem *menuItem = [[[NSMenuItem alloc] initWithTitle: [object name]
			action: @selector(open) keyEquivalent: nil] autorelease];
		[menuItem setTarget: object];
		[historyMenu insertItem: menuItem atIndex: 1];
		if ([recentHistory count] > MAX_RECENT_HISTORY) {
			[recentHistory removeLastObject];
			[historyMenu removeItemAtIndex: [historyMenu numberOfItems] - 1];
		}
	}
}

static NSMenuItem *menuItemForItem(id item) {
	if ([item isKindOfClass: [BookmarkFolder class]]) {
		NSMenu *menu = [[[NSMenu alloc] initWithTitle: [item name]] autorelease];
		NSArray *children = [item children];
		for (NSUInteger i = 0; i < [children count]; i++) {
			NSMenuItem *menuItem = menuItemForItem([children objectAtIndex: i]);
			[menu addItem: menuItem];
		}
		NSMenuItem *menuItem = [[NSMenuItem alloc] initWithTitle: [item name]
			action: nil keyEquivalent: nil];
		[menuItem setSubmenu: menu];
		return [menuItem autorelease];
	} else {
		NSMenuItem *menuItem = [[NSMenuItem alloc] initWithTitle: [item name]
			action: @selector(open) keyEquivalent: nil];
		[menuItem setTarget: item];
		return [menuItem autorelease];
	}
}

-(void)bookmarksUpdated: (NSNotification*)aNotification {
	NSArray *bookmarks = [[BookmarkFolder rootBookmarkFolder] children];
	NSMenu *bookmarksMenu = [[[NSApp menu] itemWithTag: TAG_SUBMENU_BOOKMARKS] submenu];
	NSInteger nItems = [bookmarksMenu numberOfItems];
	for (NSInteger i = 0; i < nItems - 2; i++) {
		[bookmarksMenu removeItemAtIndex: 2];
	}
	id item;
	for (NSUInteger i = 0; i < [bookmarks count]; i++) {
		item = [bookmarks objectAtIndex: i];
		[bookmarksMenu insertItem: menuItemForItem(item) atIndex: 2 + i];
	}
}

-(void)awakeFromNib {
	NSLog(@"App awake from nib");
	recentHistory = [[NSMutableArray alloc] init];
	[[NSNotificationCenter defaultCenter] addObserver: self
		selector: @selector(historyUpdated:)
		name: WebsiteHistoryUpdatedNotificationName
		object: nil];
	[[NSNotificationCenter defaultCenter] addObserver: self
		selector: @selector(bookmarksUpdated:)
		name: BookmarksUpdatedNotificationName
		object: nil];
	[self bookmarksUpdated: nil];
	[self historyUpdated: nil];
	//[self didTapNewWindow: nil];
}

-(void)didTapNewWindow: (id)sender {
	NSLog(@"Will create a new window %@", self);
	struct nsurl *url;
	nserror error;
	NSString *startupUrl = [[Preferences defaultPreferences] startupUrl];

        error = nsurl_create([startupUrl cString], &url);

	if (error == NSERROR_OK) {
		error = browser_window_create(BW_CREATE_HISTORY, url, NULL, NULL, NULL);
		nsurl_unref(url);
	}
	if (error != NSERROR_OK) {
		NSLog(@"Failed to create window");
	}
}

-(void)showDownloadsWindow: (id)sender {
	NSLog(@"Showing downloads ...");
	if (!downloadsWindowController) {
		downloadsWindowController = [[DownloadsWindowController alloc] init];
		[downloadsWindowController loadWindow];
	} else {
		[downloadsWindowController showWindow: self];
	}
}

-(void)showFindPanel: (id)sender {
	NSLog(@"Showing find panel ...");
	if (!findPanelController) {
		findPanelController = [[FindPanelController alloc] init];
		[findPanelController loadWindow];
	} else {
		[findPanelController showWindow: self];
	}
}

-(void)showHistoryWindow: (id)sender {
	NSLog(@"Showing history ...");
	if (!historyWindowController) {
		historyWindowController = [[HistoryWindowController alloc] init];
		[historyWindowController loadWindow];
	} else {
		[historyWindowController showWindow: self];
	}
}

-(void)showBookmarksWindow: (id)sender {
	NSLog(@"Showing bookmarks...");
	if (!bookmarksWindowController) {
		bookmarksWindowController = [[BookmarksWindowController alloc] init];
		[bookmarksWindowController loadWindow];
	} else {
		[bookmarksWindowController showWindow: self];
	}
}

-(void)showPreferencesWindow: (id)sender {
	NSLog(@"Show preferences window");
	if (!preferencesWindowController) {
		preferencesWindowController = [[PreferencesWindowController alloc] init];
		[preferencesWindowController loadWindow];
	} else {
		[preferencesWindowController showWindow: self];	
	}
}

-(NSURL*)requestDownloadDestination {
	NSSavePanel *savePanel = [NSOpenPanel savePanel];
	[savePanel setDirectory: NSHomeDirectory()];
	if ([savePanel runModal] == NSOKButton) {
		return [savePanel URL];
	} else {
		return nil;
	}
}

-(NSURL*)requestFileLocation {
	NSSavePanel *openPanel = [NSOpenPanel openPanel];
	[openPanel setDirectory: NSHomeDirectory()];
	if ([openPanel runModal] == NSOKButton) {
		return [openPanel URL];
	} else {
		return nil;
	}
}

-(void)openWebsite: (Website*)aWebsite {
	struct nsurl *url;
	nserror error;
	
	error = nsurl_create([[aWebsite url] cString], &url);
	if (error == NSERROR_OK) {
		error = browser_window_create(BW_CREATE_HISTORY, url, NULL, NULL, NULL);
		nsurl_unref(url);
	}
	if (error != NSERROR_OK) {
		NSLog(@"Failed to create window");
	}
}

-(BrowserWindowController*)activeBrowserWindow {
	NSArray *windows = [NSApp windows];
	id controller;
	for (NSUInteger i = 0; i < [windows count]; i++) {
		controller = [[windows objectAtIndex: i] windowController];
		if ([controller isKindOfClass: [BrowserWindowController class]]) {
			return controller;
		}
	}
	return nil;
}

-(void)clearBrowsingHistory {
	NSUInteger days = [[Preferences defaultPreferences] browsingHistoryDays];
	if (days > 0) {
		NSLog(@"Clearing history older than %u days", days);
		[Website deleteHistoryOlderThanDays: days];
	} else {
		NSLog(@"browsingHistoryDays preference set to 0, won't clear history");
	}
}

-(NSString*)currentUrl {
	return [[self activeBrowserWindow] visibleUrl];
}

-(void)openDeveloperFileAtPath: (NSString*)path {
	NSString *app;
	Website *website;
	BrowserWindowController *current;
	
	website = [[Website alloc] initWithName: @"" url: [NSString 
		stringWithFormat: @"file://%@", path]];
	[website autorelease];
	switch ([[Preferences defaultPreferences] developerViewLocation]) {
	case ViewLocationTab:
		current = [self activeBrowserWindow];
		if (current != nil) {
			[current newTab: [website url]];
			break;
		}
	case ViewLocationWindow:
		[self openWebsite: website];
		break;
	case ViewLocationEditor:
		if (![[NSWorkspace sharedWorkspace] openFile: path]) {
			NSAlert *alert = [[NSAlert alloc] init];
			[alert setMessageText: @"No Editor"];
			[alert setInformativeText: @"Either no NSWorkspace provider"\
			 	" exists,\nor no app can be found to open this file"\
				" type (.txt). \nTry picking a different option for"\
				" developer views \nin preferences > appearance."];
			[alert addButtonWithTitle: @"Ok"];
			[alert runModal];
			[alert release];
		}
		break;
	default:
		break;
	}
}

-(void) openFileWindow: (id)sender
{
	Website *website;
	NSOpenPanel *openPanel = [NSOpenPanel openPanel];
	[openPanel setAllowsMultipleSelection: YES];

	if ([openPanel runModal] == NSOKButton) {
		for (int i = 0; i < [[openPanel URLs] count]; i++) {
			Website *website;
			NSURL *url = [[openPanel URLs] objectAtIndex: i];
			website = [[Website alloc] initWithName: @"" url: [NSString 
				stringWithFormat: @"file://%@", [url absoluteString]]];
			[website autorelease];
			[self openWebsite: website];
		}
	}
}

- (BOOL) application: (NSApplication *)application
	    openFile: (NSString *)fileName
{
	Website *website;
	website = [[Website alloc] initWithName: @"" url: [NSString 
		stringWithFormat: @"file://%@", fileName]];
	[website autorelease];
	[self openWebsite: website];
	return YES;

}

- (void) openURL: (NSPasteboard*)pb
	userData: (NSString*)ud
	   error: (NSString**)err
{
	NSString	*webURL;
	NSArray	*types;
	NSArray	*args;
	NSString	*path;
	NSTask	*task;
	NSString *pboardString;
	Website *website;

	*err = nil;
	types = [pb types];

    if (![types containsObject:NSStringPboardType] ||
		!(pboardString = [pb stringForType:NSStringPboardType]))
    {
        *err = NSLocalizedString(@"Error: Pasteboard doesn't contain a string.",
                                   @"Pasteboard couldn't give string.");
        return;
    }

	webURL = [pb stringForType: NSStringPboardType];
	if (webURL == nil)
	{
		*err = @"No string value supplied on pasteboard";
		return;
	}

	website = [[Website alloc] initWithName: @"" url: webURL];
	[website autorelease];
	[self openWebsite: website];

	return;
}

@end

int main(int argc, char **argv) {
	NSAutoreleasePool *pool = [NSAutoreleasePool new];

	nslog_init(NULL, &argc, argv);
       nserror error;
       struct netsurf_table gnustep_table = {
               .misc = &gnustep_misc_table,
               .window = &gnustep_window_table,
               .clipboard = &gnustep_clipboard_table,
               .download = &gnustep_download_table,
               .fetch = &gnustep_fetch_table,
               .search = &gnustep_search_table,
               .bitmap = &gnustep_bitmap_table,
               .layout = &gnustep_layout_table,
       };
       error = netsurf_register(&gnustep_table);
	NSCAssert(error == NSERROR_OK, @"NetSurf operation table failed registration");
	
       /* common initialisation */
	error = nsoption_init(set_defaults, &nsoptions, &nsoptions_default);
	NSCAssert(error == NSERROR_OK, @"Options failed to initialise");
	error = netsurf_init(NULL);
	NSCAssert(error == NSERROR_OK, @"NetSurf failed to initialise");
       
 	/* Load user options */
	error = nsoption_read([NS_PREFS_FILE cString], nsoptions);
	if (error != NSERROR_OK) {
		NSLog(@"Failed to load user preferences");
	}
		
	NSApplication *app = [NSApplication sharedApplication];
	AppDelegate *delegate = [AppDelegate new];
	[app setDelegate: delegate];
	[app run];
	[pool release];
	return 0;
}