/*
 * Hedgewars-iOS, a Hedgewars port for iOS devices
 * Copyright (c) 2009-2010 Vittorio Giovara <vittorio.giovara@gmail.com>
 *
 * This program 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
 *
 * This program 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * File created on 08/01/2010.
 */


#import "MainMenuViewController.h"
#import "CommodityFunctions.h"
#import "SDL_uikitappdelegate.h"
#import "PascalImports.h"
#import "GameConfigViewController.h"
#import "SplitViewRootController.h"
#import "AboutViewController.h"
#import "SavedGamesViewController.h"

@implementation MainMenuViewController
@synthesize gameConfigViewController, settingsViewController, aboutViewController, savedGamesViewController;

-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation {
    return rotationManager(interfaceOrientation);
}

// using a different thread for audio 'cos it's slow
-(void) initAudioThread {
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    // do somthing in the future
    [pool release];
}

// check if some configuration files are already set; if they are present it means that the current copy must be updated
-(void) createNecessaryFiles {
    NSError *err = nil;
    NSString *directoryToCheck, *fileToCheck, *fileToUpdate;
    NSString *resDir = [[NSBundle mainBundle] resourcePath];
    DLog(@"Creating necessary files");
    
    // create an empty saves directory by deleting the previous one (saves are incompatible between releases)
    if ([[NSFileManager defaultManager] fileExistsAtPath:SAVES_DIRECTORY()])
        [[NSFileManager defaultManager] removeItemAtPath:SAVES_DIRECTORY() error:NULL];
    [[NSFileManager defaultManager] createDirectoryAtPath:SAVES_DIRECTORY() withIntermediateDirectories:NO attributes:nil error:NULL];
    
    // if the settings file is already present, we merge current preferences with the update
    fileToCheck = [NSString stringWithFormat:@"%@/Settings/settings.plist",resDir];
    if ([[NSFileManager defaultManager] fileExistsAtPath:SETTINGS_FILE()]) {
        NSDictionary *settings = [[NSDictionary alloc] initWithContentsOfFile:SETTINGS_FILE()];
        NSMutableDictionary *update = [[NSMutableDictionary alloc] initWithContentsOfFile:fileToCheck];
        [update addEntriesFromDictionary:settings];
        [settings release];
        [update writeToFile:SETTINGS_FILE() atomically:YES];
        [update release];
    } else 
        [[NSFileManager defaultManager] copyItemAtPath:fileToCheck toPath:SETTINGS_FILE() error:&err];
    
    // TODO: scrap this and always copy the bundled files; update exisising ones in some way
    // if the teams are already present we merge the old teams, else we copy new teams
    directoryToCheck = [NSString stringWithFormat:@"%@/Settings/Teams",resDir];
    if ([[NSFileManager defaultManager] fileExistsAtPath:TEAMS_DIRECTORY()]) {
        for (NSString *str in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:directoryToCheck error:&err]) {
            fileToCheck = [NSString stringWithFormat:@"%@/%@",TEAMS_DIRECTORY(),str];
            fileToUpdate = [NSString stringWithFormat:@"%@/Settings/Teams/%@",resDir,str];
            if ([[NSFileManager defaultManager] fileExistsAtPath:fileToCheck]) {
                NSDictionary *team = [[NSDictionary alloc] initWithContentsOfFile:fileToCheck];
                NSMutableDictionary *update = [[NSMutableDictionary alloc] initWithContentsOfFile:fileToUpdate];
                [update addEntriesFromDictionary:team];
                [team release];
                [update writeToFile:fileToCheck atomically:YES];
                [update release];
            } else
                [[NSFileManager defaultManager] copyItemAtPath:fileToUpdate toPath:fileToCheck error:&err];
        }
    } else
        [[NSFileManager defaultManager] copyItemAtPath:directoryToCheck toPath:TEAMS_DIRECTORY() error:&err];
    
    // TODO: scrap this and always copy the bundled files; update exisising ones in some way
    // the same holds for schemes (but they're dictionaries containing arrays)
    directoryToCheck = [NSString stringWithFormat:@"%@/Settings/Schemes",resDir];
    if ([[NSFileManager defaultManager] fileExistsAtPath:SCHEMES_DIRECTORY()]) {
        for (NSString *str in [[NSFileManager defaultManager] contentsOfDirectoryAtPath:directoryToCheck error:nil]) {
            fileToCheck = [NSString stringWithFormat:@"%@/%@",SCHEMES_DIRECTORY(),str];
            fileToUpdate = [NSString stringWithFormat:@"%@/Settings/Schemes/%@",resDir,str];
            if ([[NSFileManager defaultManager] fileExistsAtPath:fileToCheck]) {
                NSDictionary *scheme = [[NSDictionary alloc] initWithContentsOfFile:fileToCheck];
                NSDictionary *update = [[NSDictionary alloc] initWithContentsOfFile:fileToUpdate];
                if ([[update objectForKey:@"basic"] count] > [[scheme objectForKey:@"basic"] count] ||
                    [[update objectForKey:@"gamemod"] count] > [[scheme objectForKey:@"gamemod"] count])
                    [update writeToFile:fileToCheck atomically:YES];
                [update release];
                [scheme release];
            } else
                [[NSFileManager defaultManager] copyItemAtPath:fileToUpdate toPath:fileToCheck error:&err];
        }
    } else
        [[NSFileManager defaultManager] copyItemAtPath:directoryToCheck toPath:SCHEMES_DIRECTORY() error:&err];
    
    // weapons are autoupdated at runtime but it's better to update then every new version
    if ([[NSFileManager defaultManager] fileExistsAtPath:WEAPONS_DIRECTORY()] == NO)
        [[NSFileManager defaultManager] createDirectoryAtPath:WEAPONS_DIRECTORY()
                                  withIntermediateDirectories:YES
                                                   attributes:nil
                                                        error:&err];
    createWeaponNamed(@"Default", 0);
    createWeaponNamed(@"Crazy", 1);
    createWeaponNamed(@"Pro mode", 2);
    createWeaponNamed(@"Shoppa", 3);
    createWeaponNamed(@"Clean slate", 4);
    createWeaponNamed(@"Minefield", 5);

    if (err != nil) 
        DLog(@"%@", err);
    else
        DLog(@"Success");
}

#pragma mark -
-(void) viewDidLoad {
    [super viewDidLoad];

    // listen to request to remove the modalviewcontroller (needed due to the splitcontroller)
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(dismissModalViewController)
                                                 name: @"dismissModalView"
                                               object:nil];

    // get the app's version
    NSString *version = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleVersionKey];

    // get the version number that we've been tracking
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
    NSString *trackingVersion = [userDefaults stringForKey:@"HedgeVersion"];

    if (trackingVersion == nil || [trackingVersion isEqualToString:version] == NO) {
        [userDefaults setObject:version forKey:@"HedgeVersion"];
        [userDefaults synchronize];
        [self createNecessaryFiles];
    }
}


#pragma mark -
-(IBAction) switchViews:(id) sender {
    UIButton *button = (UIButton *)sender;
    UIAlertView *alert;
    NSString *xib = nil;
    NSString *debugStr = nil;

    playSound(@"clickSound");
    switch (button.tag) {
        case 0:
            if (nil == self.gameConfigViewController) {
                if (IS_IPAD())
                    xib = nil;
                else
                    xib = @"GameConfigViewController";
                
                GameConfigViewController *gcvc = [[GameConfigViewController alloc] initWithNibName:xib bundle:nil];
                gcvc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
                self.gameConfigViewController = gcvc;
                [gcvc release];
            }

            [self presentModalViewController:self.gameConfigViewController animated:YES];
            break;
        case 2:
            if (nil == self.settingsViewController) {
                SplitViewRootController *svrc = [[SplitViewRootController alloc] initWithNibName:nil bundle:nil];
                svrc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
                self.settingsViewController = svrc;
                [svrc release];
            }

            [self presentModalViewController:self.settingsViewController animated:YES];
            break;
        case 3:
#ifdef DEBUG
            debugStr = [[NSString alloc] initWithContentsOfFile:DEBUG_FILE()];
            UITextView *scroll = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.height, self.view.frame.size.width)];
            scroll.text = debugStr;
            [debugStr release];
            scroll.editable = NO;

            UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
            [btn addTarget:scroll action:@selector(removeFromSuperview) forControlEvents:UIControlEventTouchUpInside];
            btn.backgroundColor = [UIColor blackColor];
            btn.frame = CGRectMake(self.view.frame.size.height-70, 0, 70, 70);
            [scroll addSubview:btn];
            [self.view addSubview:scroll];
            [scroll release];
#else
            if (nil == self.aboutViewController) {
                AboutViewController *about = [[AboutViewController alloc] initWithNibName:@"AboutViewController" bundle:nil];
                about.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
                about.modalPresentationStyle = UIModalPresentationFormSheet;
                self.aboutViewController = about;
                [about release];
            }
            
            [self presentModalViewController:self.aboutViewController animated:YES];
#endif
            break;
        case 4:
            if (nil == self.savedGamesViewController) {
                SavedGamesViewController *savedgames = [[SavedGamesViewController alloc] initWithNibName:@"SavedGamesViewController" bundle:nil];
                savedgames.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
                savedgames.modalPresentationStyle = UIModalPresentationPageSheet;
                self.savedGamesViewController = savedgames;
                [savedgames release];
            }
            
            [self presentModalViewController:self.savedGamesViewController animated:YES];
            break;
        default:
            alert = [[UIAlertView alloc] initWithTitle:@"Not Yet Implemented"
                                               message:@"Sorry, this feature is not yet implemented"
                                              delegate:nil
                                     cancelButtonTitle:@"Well, don't worry"
                                     otherButtonTitles:nil];
            [alert show];
            [alert release];
            break;
    }
}

// must be kept for compatibility with the settings page
-(void) dismissModalViewController {
    [self dismissModalViewControllerAnimated:YES];
}

-(void) viewDidUnload {
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    self.gameConfigViewController = nil;
    self.settingsViewController = nil;
    self.aboutViewController = nil;
    self.savedGamesViewController = nil;
    MSG_DIDUNLOAD();
    [super viewDidUnload];
}

-(void) didReceiveMemoryWarning {
    if (self.settingsViewController.view.superview == nil)
        self.settingsViewController = nil;
    if (self.gameConfigViewController.view.superview == nil)
        self.gameConfigViewController = nil;
    if (self.aboutViewController.view.superview == nil)
        self.aboutViewController = nil;
    if (self.savedGamesViewController.view.superview == nil)
        self.savedGamesViewController = nil;
    MSG_MEMCLEAN();
    [super didReceiveMemoryWarning];
}

-(void) dealloc {
    [settingsViewController release];
    [gameConfigViewController release];
    [aboutViewController release];
    [savedGamesViewController release];
    [super dealloc];
}

@end