/*  RetroArch - A frontend for libretro.
 *  Copyright (C) 2013-2014 - Jason Fetters
 * 
 *  RetroArch 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 Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  RetroArch 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 RetroArch.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#include <objc/runtime.h>
#include "apple/common/RetroArch_Apple.h"
#include "apple/common/apple_input.h"
#include "menu.h"

/*********************************************/
/* RunActionSheet                            */
/* Creates and displays a UIActionSheet with */
/* buttons pulled from a RetroArch           */
/* string_list structure.                    */
/*********************************************/
static const void* const associated_delegate_key = &associated_delegate_key;

typedef void (^RAActionSheetCallback)(UIActionSheet*, NSInteger);

@interface RARunActionSheetDelegate : NSObject<UIActionSheetDelegate>
@property (nonatomic, copy) RAActionSheetCallback callbackBlock;
@end

@implementation RARunActionSheetDelegate

- (id)initWithCallbackBlock:(RAActionSheetCallback)callback
{
   if ((self = [super init]))
      _callbackBlock = callback;
   return self;
}

- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex
{
   if (self.callbackBlock)
      self.callbackBlock(actionSheet, buttonIndex);
}

@end

static void RunActionSheet(const char* title, const struct string_list* items, UIView* parent, RAActionSheetCallback callback)
{
   RARunActionSheetDelegate* delegate = [[RARunActionSheetDelegate alloc] initWithCallbackBlock:callback];
   
   UIActionSheet* actionSheet = [UIActionSheet new];
   actionSheet.title = BOXSTRING(title);
   actionSheet.delegate = delegate;
   
   for (int i = 0; i < items->size; i ++)
      [actionSheet addButtonWithTitle:BOXSTRING(items->elems[i].data)];
   
   actionSheet.cancelButtonIndex = [actionSheet addButtonWithTitle:@"Cancel"];
   
   objc_setAssociatedObject(actionSheet, associated_delegate_key, delegate, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
   
   [actionSheet showInView:parent];
}


/*********************************************/
/* RAMenuBase                                */
/* A menu class that displays RAMenuItemBase */
/* objects.                                  */
/*********************************************/
@implementation RAMenuBase

- (id)initWithStyle:(UITableViewStyle)style
{
   if ((self = [super initWithStyle:style]))
      _sections = [NSMutableArray array];
   return self;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView
{
   return self.sections.count;
}

- (NSString*)tableView:(UITableView*)tableView titleForHeaderInSection:(NSInteger)section
{
   return self.hidesHeaders ? nil : self.sections[section][0];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
   return [self.sections[section] count] - 1;
}

- (id)itemForIndexPath:(NSIndexPath*)indexPath
{
   return self.sections[indexPath.section][indexPath.row + 1];
}

- (UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
   return [[self itemForIndexPath:indexPath] cellForTableView:tableView];
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
   [[self itemForIndexPath:indexPath] wasSelectedOnTableView:tableView ofController:self];
}

- (void)willReloadData
{
   
}

- (void)reloadData
{
   [self willReloadData];
   [[self tableView] reloadData];
}

@end

/*********************************************/
/* RAMenuItemBasic                           */
/* A simple menu item that displays a text   */
/* description and calls a block object when */
/* selected.                                 */
/*********************************************/
@implementation RAMenuItemBasic

+ (RAMenuItemBasic*)itemWithDescription:(NSString*)description action:(void (^)())action
{
   return [self itemWithDescription:description action:action detail:Nil];
}

+ (RAMenuItemBasic*)itemWithDescription:(NSString*)description action:(void (^)())action detail:(NSString* (^)())detail
{
   return [self itemWithDescription:description association:nil action:action detail:detail];
}

+ (RAMenuItemBasic*)itemWithDescription:(NSString*)description association:(id)userdata action:(void (^)())action detail:(NSString* (^)())detail
{
   RAMenuItemBasic* item = [RAMenuItemBasic new];
   item.description = description;
   item.userdata = userdata;
   item.action = action;
   item.detail = detail;
   return item;
}

- (UITableViewCell*)cellForTableView:(UITableView*)tableView
{
   static NSString* const cell_id = @"text";
   
   UITableViewCell* result = [tableView dequeueReusableCellWithIdentifier:cell_id];
   if (!result)
      result = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cell_id];
   
   result.selectionStyle = UITableViewCellSelectionStyleNone;
   result.textLabel.text = self.description;
   result.detailTextLabel.text = self.detail ? self.detail(self.userdata) : nil;
   return result;
}

- (void)wasSelectedOnTableView:(UITableView*)tableView ofController:(UIViewController*)controller
{
   if (self.action)
      self.action(self.userdata);
}

@end

/*********************************************/
/* RAMenuItemGeneralSetting                  */
/* A simple menu item that displays the      */
/* state, and allows editing, of a string or */
/* numeric setting.                          */
/*********************************************/
@interface RAMenuItemGeneralSetting() <UIAlertViewDelegate>
@property (nonatomic) RANumberFormatter* formatter;
@end

@implementation RAMenuItemGeneralSetting

+ (id)itemForSetting:(const rarch_setting_t*)setting
{
   switch (setting->type)
   {
      case ST_BOOL: return [[RAMenuItemBooleanSetting alloc] initWithSetting:setting];
      case ST_PATH: return [[RAMenuItemPathSetting alloc] initWithSetting:setting];
      case ST_BIND: return [[RAMenuItemBindSetting alloc] initWithSetting:setting];
      default:      break;
   }

   if (setting->type == ST_STRING && setting->values)
      return [[RAMenuItemEnumSetting alloc] initWithSetting:setting];
   
   RAMenuItemGeneralSetting* item = [[RAMenuItemGeneralSetting alloc] initWithSetting:setting];
   
   if (item.setting->type == ST_INT || item.setting->type == ST_UINT || item.setting->type == ST_FLOAT)
      item.formatter = [[RANumberFormatter alloc] initWithSetting:item.setting];
   
   return item;
}

- (id)initWithSetting:(const rarch_setting_t*)setting
{
   if ((self = [super init]))
      _setting = setting;
   return self;
}

- (UITableViewCell*)cellForTableView:(UITableView*)tableView
{
   static NSString* const cell_id = @"string_setting";

   self.parentTable = tableView;

   UITableViewCell* result = [tableView dequeueReusableCellWithIdentifier:cell_id];
   if (!result)
   {
      result = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cell_id];
      result.selectionStyle = UITableViewCellSelectionStyleNone;
   }
   
   [self attachDefaultingGestureTo:result];

   char buffer[256];
   result.textLabel.text = BOXSTRING(self.setting->short_description);

   if (self.setting)
   {
      result.detailTextLabel.text = BOXSTRING(setting_data_get_string_representation(self.setting, buffer, sizeof(buffer)));
      
      if (self.setting->type == ST_PATH)
         result.detailTextLabel.text = [result.detailTextLabel.text lastPathComponent];
   }
   return result;
}

- (void)wasSelectedOnTableView:(UITableView*)tableView ofController:(UIViewController*)controller
{
   UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:@"Enter new value" message:BOXSTRING(self.setting->short_description) delegate:self
                                                  cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK", nil];
   alertView.alertViewStyle = UIAlertViewStylePlainTextInput;

   UITextField* field = [alertView textFieldAtIndex:0];
   char buffer[256];
   
   field.delegate = self.formatter;
   field.placeholder = BOXSTRING(setting_data_get_string_representation(self.setting, buffer, sizeof(buffer)));

   [alertView show];
}

- (void)alertView:(UIAlertView*)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
   NSString* text = [alertView textFieldAtIndex:0].text;

   if (buttonIndex == alertView.firstOtherButtonIndex && text.length)
   {
      setting_data_set_with_string_representation(self.setting, [text UTF8String]);
      [self.parentTable reloadData];
   }
}

- (void)attachDefaultingGestureTo:(UIView*)view
{
   for (UIGestureRecognizer* i in view.gestureRecognizers)
      [view removeGestureRecognizer:i];
   [view addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self
                                                                    action:@selector(resetValue:)]];
}

- (void)resetValue:(UIGestureRecognizer*)gesture
{
   if (gesture.state == UIGestureRecognizerStateBegan)
   {
      RAMenuItemGeneralSetting __weak* weakSelf = self;

      struct string_list* items = string_split("OK", "|");
      RunActionSheet("Really Reset Value?", items, self.parentTable,
         ^(UIActionSheet* actionSheet, NSInteger buttonIndex)
         {
            if (buttonIndex != actionSheet.cancelButtonIndex)
               setting_data_reset_setting(self.setting);
            [weakSelf.parentTable reloadData];
         });
      string_list_free(items);
   }
}

@end

/*********************************************/
/* RAMenuItemBooleanSetting                  */
/* A simple menu item that displays the      */
/* state, and allows editing, of a boolean   */
/* setting.                                  */
/*********************************************/
@implementation RAMenuItemBooleanSetting

- (id)initWithSetting:(const rarch_setting_t*)setting
{
   if ((self = [super init]))
      _setting = setting;
   return self;
}

- (UITableViewCell*)cellForTableView:(UITableView*)tableView
{
   static NSString* const cell_id = @"boolean_setting";
   
   UITableViewCell* result = [tableView dequeueReusableCellWithIdentifier:cell_id];
   if (!result)
   {
      result = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cell_id];
      result.selectionStyle = UITableViewCellSelectionStyleNone;
      result.accessoryView = [UISwitch new];
   }
   
   result.textLabel.text = BOXSTRING(self.setting->short_description);
   [(id)result.accessoryView removeTarget:nil action:NULL forControlEvents:UIControlEventValueChanged];
   [(id)result.accessoryView addTarget:self action:@selector(handleBooleanSwitch:) forControlEvents:UIControlEventValueChanged];
   
   if (self.setting)
      [(id)result.accessoryView setOn:*self.setting->value.boolean];
   return result;
}

- (void)handleBooleanSwitch:(UISwitch*)swt
{
   if (self.setting)
      *self.setting->value.boolean = swt.on ? true : false;
}

- (void)wasSelectedOnTableView:(UITableView*)tableView ofController:(UIViewController*)controller
{
}

@end

/*********************************************/
/* RAMenuItemPathSetting                     */
/* A menu item that displays and allows      */
/* browsing for a path setting.              */
/*********************************************/
@interface RAMenuItemPathSetting() @end
@implementation RAMenuItemPathSetting

- (void)wasSelectedOnTableView:(UITableView*)tableView ofController:(UIViewController*)controller
{
   RAMenuItemPathSetting __weak* weakSelf = self;
   
   NSString* path = [BOXSTRING(self.setting->value.string) stringByDeletingLastPathComponent];
   RADirectoryList* list = [[RADirectoryList alloc] initWithPath:path extensions:self.setting->values action:
      ^(RADirectoryList* list, RADirectoryItem* item)
      {
         if (!list.allowBlank && !item)
            return;
         
         if (list.forDirectory && !item.isDirectory)
            return;
         
         setting_data_set_with_string_representation(weakSelf.setting, item ? [item.path UTF8String] : "");
         [[list navigationController] popViewControllerAnimated:YES];
         
         [weakSelf.parentTable reloadData];
      }];
   
   list.allowBlank = (self.setting->flags & SD_FLAG_ALLOW_EMPTY);
   list.forDirectory = (self.setting->flags & SD_FLAG_PATH_DIR);
   
   [controller.navigationController pushViewController:list animated:YES];
}

@end

/*********************************************/
/* RAMenuItemEnumSetting                     */
/* A menu item that displays and allows      */
/* a setting to be set from a list of        */
/* allowed choices.                          */
/*********************************************/
@implementation RAMenuItemEnumSetting

- (void)wasSelectedOnTableView:(UITableView*)tableView ofController:(UIViewController*)controller
{
   RAMenuItemEnumSetting __weak* weakSelf = self;
   
   struct string_list* items = string_split(self.setting->values, "|");
   RunActionSheet(self.setting->short_description, items, self.parentTable,
      ^(UIActionSheet* actionSheet, NSInteger buttonIndex)
      {
         if (buttonIndex != actionSheet.cancelButtonIndex)
         {
            setting_data_set_with_string_representation(self.setting, [[actionSheet buttonTitleAtIndex:buttonIndex] UTF8String]);
            [weakSelf.parentTable reloadData];
         }
      });
   string_list_free(items);
}

@end


/*********************************************/
/* RAMenuItemBindSetting                     */
/* A menu item that displays and allows      */
/* mapping of a keybinding.                  */
/*********************************************/
@interface RAMenuItemBindSetting() <UIAlertViewDelegate>
@property (nonatomic) NSTimer* bindTimer;
@property (nonatomic) UIAlertView* alert;
@end

@implementation RAMenuItemBindSetting

- (void)wasSelectedOnTableView:(UITableView *)tableView ofController:(UIViewController *)controller
{
   self.alert = [[UIAlertView alloc] initWithTitle:@"RetroArch"
                                     message:BOXSTRING(self.setting->short_description)
                                     delegate:self
                                     cancelButtonTitle:@"Cancel"
                                     otherButtonTitles:@"Clear Keyboard", @"Clear Joystick", @"Clear Axis", nil];

   [self.alert show];
   
   [self.parentTable reloadData];
   
   self.bindTimer = [NSTimer scheduledTimerWithTimeInterval:.1f target:self selector:@selector(checkBind:)
                             userInfo:nil repeats:YES];
}

- (void)finishWithClickedButton:(bool)clicked
{
   if (!clicked)
      [self.alert dismissWithClickedButtonIndex:self.alert.cancelButtonIndex animated:YES];
   self.alert = nil;

   [self.parentTable reloadData];

   [self.bindTimer invalidate];
   self.bindTimer = nil;
   
   apple_input_reset_icade_buttons();
}

- (void)alertView:(UIAlertView*)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
   if (buttonIndex == alertView.firstOtherButtonIndex)
      BINDFOR(*self.setting).key = RETROK_UNKNOWN;
   else if(buttonIndex == alertView.firstOtherButtonIndex + 1)
      BINDFOR(*self.setting).joykey = NO_BTN;
   else if(buttonIndex == alertView.firstOtherButtonIndex + 2)
      BINDFOR(*self.setting).joyaxis = AXIS_NONE;
   
   [self finishWithClickedButton:true];
}

- (void)checkBind:(NSTimer*)send
{
   int32_t value = 0;
   int32_t index = self.setting->index ? self.setting->index - 1 : 0;

   if ((value = apple_input_find_any_key()))
      BINDFOR(*self.setting).key = input_translate_keysym_to_rk(value);
   else if ((value = apple_input_find_any_button(index)) >= 0)
      BINDFOR(*self.setting).joykey = value;
   else if ((value = apple_input_find_any_axis(index)))
      BINDFOR(*self.setting).joyaxis = (value > 0) ? AXIS_POS(value - 1) : AXIS_NEG(abs(value) - 1);
   else
      return;

   [self finishWithClickedButton:false];
}

@end


/*********************************************/
/* RAMainMenu                                */
/* Menu object that is displayed immediately */
/* after startup.                            */
/*********************************************/
@implementation RAMainMenu

- (id)init
{
   if ((self = [super initWithStyle:UITableViewStylePlain]))
      self.title = @"RetroArch";
   return self;
}

- (void)viewWillAppear:(BOOL)animated
{
   [self reloadData];
}

- (void)willReloadData
{
   RAMainMenu* __weak weakSelf = self;
   self.sections = [NSMutableArray array];

   NSMutableArray* settings = [NSMutableArray arrayWithObjects:@"Settings",
                               [RAMenuItemBasic itemWithDescription:@"Frontend"
                                  action:^{ [weakSelf.navigationController pushViewController:[RAFrontendSettingsMenu new] animated:YES]; }],
                               nil];
   
   if (!apple_is_running)
   {
      [self.sections addObject:[NSArray arrayWithObjects:@"Content",
                                 [RAMenuItemBasic itemWithDescription:@"Choose Core"
                                    action:^{ [weakSelf chooseCoreWithPath:nil]; }
                                    detail:^{ return weakSelf.core ? apple_get_core_display_name(weakSelf.core) : @"Auto Detect"; }],
                                 [RAMenuItemBasic itemWithDescription:@"Load Content"                 action:^{ [weakSelf loadGame]; }],
                                 [RAMenuItemBasic itemWithDescription:@"Load Content (History)"       action:^{ [weakSelf loadHistory]; }],
                                 nil]];
   }
   else
   {
      [self.sections addObject:[NSArray arrayWithObjects:@"Actions",
                                 [RAMenuItemBasic itemWithDescription:@"Reset Content" action:^{ [weakSelf performBasicAction:RESET]; }],
                                 [RAMenuItemBasic itemWithDescription:@"Close Content" action:^{ [weakSelf performBasicAction:QUIT]; }],
                                 nil]];
      
      [self.sections addObject:[NSArray arrayWithObjects:@"States",
                                 [RAMenuItemStateSelect new],
                                 [RAMenuItemBasic itemWithDescription:@"Load State" action:^{ [weakSelf performBasicAction:LOAD_STATE]; }],
                                 [RAMenuItemBasic itemWithDescription:@"Save State" action:^{ [weakSelf performBasicAction:SAVE_STATE]; }],
                                 nil]];
      
      [settings addObject:[RAMenuItemBasic itemWithDescription:@"Core"
                              action:^{ [weakSelf.navigationController pushViewController:[[RACoreSettingsMenu alloc] initWithCore:apple_core] animated:YES]; }]];
      [settings addObject:[RAMenuItemBasic itemWithDescription:@"Core Options"
                              action:^{ [weakSelf.navigationController pushViewController:[RACoreOptionsMenu new] animated:YES]; }]];
   }
   
   [self.sections addObject:settings];
   
   if (apple_is_running)
      self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Resume" style:UIBarButtonItemStyleBordered target:[RetroArch_iOS get] action:@selector(showGameView)];
   else
      self.navigationItem.leftBarButtonItem = nil;
}

- (void)performBasicAction:(enum basic_event_t)action
{
   [[RetroArch_iOS get] showGameView];
   apple_event_basic_command(action);
}

- (void)chooseCoreWithPath:(NSString*)path
{
   RAMainMenu* __weak weakSelf = self;

   RAMenuCoreList* list = [[RAMenuCoreList alloc] initWithPath:path allowAutoDetect:!path
      action: ^(NSString* core)
      {
         if (path)
            apple_run_core(core, [path UTF8String]);
         else
         {
            weakSelf.core = core;
            [weakSelf.tableView reloadData];
            [weakSelf.navigationController popViewControllerAnimated:YES];
         }
      }];
   
   // Don't push view controller if it already launched a game
   if (!list.actionRan)
      [self.navigationController pushViewController:list animated:YES];
}

- (void)loadGame
{   
   RAMainMenu __weak* weakSelf = self;
   
   RADirectoryList* list = [[RADirectoryList alloc] initWithPath:[RetroArch_iOS get].documentsDirectory extensions:NULL action:
      ^(RADirectoryList *list, RADirectoryItem *item)
      {
         if (item && !item.isDirectory)
         {
            if (weakSelf.core)
               apple_run_core(weakSelf.core, [item.path UTF8String]);
            else
               [weakSelf chooseCoreWithPath:item.path];
         }
      }];
   
   [self.navigationController pushViewController:list animated:YES];
}

- (void)loadHistory
{
   NSString* history_path = [NSString stringWithFormat:@"%@/%s", [RetroArch_iOS get].systemDirectory, ".retroarch-game-history.txt"];
   [self.navigationController pushViewController:[[RAHistoryMenu alloc] initWithHistoryPath:history_path] animated:YES];
}

@end

/*********************************************/
/* RAHistoryMenu                             */
/* Menu object that displays and allows      */
/* launching a file from the ROM history.    */
/*********************************************/
@implementation RAHistoryMenu

- (void)dealloc
{
   if (_history)
      rom_history_free(_history);
}

- (id)initWithHistoryPath:(NSString *)historyPath
{
   if ((self = [super initWithStyle:UITableViewStylePlain]))
   {
      _history = rom_history_init([historyPath UTF8String], 100);
      [self reloadData];
      self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Clear History"
                                                style:UIBarButtonItemStyleBordered target:self action:@selector(clearHistory)];
   }
   
   return self;
}

- (void)clearHistory
{
   if (_history)
      rom_history_clear(_history);
   [self reloadData];
}

- (void)willReloadData
{  
   RAHistoryMenu* __weak weakSelf = self;
   NSMutableArray* section = [NSMutableArray arrayWithObject:@""];
   
   for (int i = 0; _history && i != rom_history_size(_history); i ++)
   {
      RAMenuItemBasic* item = [RAMenuItemBasic itemWithDescription:BOXSTRING(path_basename(apple_rom_history_get_path(weakSelf.history, i)))
                                                            action:^{ apple_run_core(BOXSTRING(apple_rom_history_get_core_path(weakSelf.history, i)),
                                                                                     apple_rom_history_get_path(weakSelf.history, i)); }
                                                            detail:^{ return BOXSTRING(apple_rom_history_get_core_name(weakSelf.history, i)); }];
      [section addObject:item];
   }
   
   self.sections = [NSMutableArray arrayWithObject:section];
}

@end

/*********************************************/
/* RASettingsGroupMenu                       */
/* Menu object that displays and allows      */
/* editing of the a group of                 */
/* rarch_setting_t structures.               */
/*********************************************/
@implementation RASettingsGroupMenu

- (id)initWithGroup:(const rarch_setting_t*)group
{
   if ((self = [super initWithStyle:UITableViewStyleGrouped]))
   {
      self.title = BOXSTRING(group->name);
   
      NSMutableArray* settings = nil;

      for (const rarch_setting_t* i = group + 1; i->type != ST_END_GROUP; i ++)
      {
         if (i->type == ST_SUB_GROUP)
            settings = [NSMutableArray arrayWithObjects:BOXSTRING(i->name), nil];
         else if (i->type == ST_END_SUB_GROUP)
         {
            if (settings.count)
               [self.sections addObject:settings];
         }
         else
            [settings addObject:[RAMenuItemGeneralSetting itemForSetting:i]];
      }
   }

   return self;
}

@end


/*********************************************/
/* RACoreSettingsMenu                        */
/* Menu object that displays and allows      */
/* editing of the setting_data list.         */
/*********************************************/
@interface RACoreSettingsMenu()
@property (nonatomic, copy) NSString* pathToSave; // < Leave nil to not save
@property (nonatomic, assign) bool isCustom;
@end

@implementation RACoreSettingsMenu

- (id)initWithCore:(NSString*)core
{
   char buffer[PATH_MAX];

   RACoreSettingsMenu* __weak weakSelf = self;

   if ((self = [super initWithStyle:UITableViewStyleGrouped]))
   {
      _isCustom = apple_core_info_has_custom_config([core UTF8String]);
      if (_isCustom)
      {
         self.title = apple_get_core_display_name(core);
         
         _pathToSave = BOXSTRING(apple_core_info_get_custom_config([core UTF8String], buffer, sizeof(buffer)));
         self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemTrash target:self action:@selector(deleteCustom)];
      }
      else
      {
         self.title = @"Global Core Config";
         _pathToSave = apple_platform.globalConfigFile;
      }
      
      const rarch_setting_t* setting_data = setting_data_get_list();
      
      setting_data_reset(setting_data);
      setting_data_load_config_path(setting_data, [_pathToSave UTF8String]);
      
      // HACK: Load the key mapping table
      apple_input_find_any_key();
      
      self.core = core;
   
      // Add common options
      const char* emula[] = { "Emulation", "rewind_enable", "fps_show", 0 };
      const char* video[] = { "Video", "video_scale_integer", "video_smooth", 0 };
      const char* audio[] = { "Audio", "audio_mute", "audio_rate_control", "audio_rate_control_delta", 0 };
      const char* input[] = { "Input", "input_overlay", "input_overlay_opacity", 0 };
      const char** groups[] = { emula, video, audio, input, 0 };
      
      for (int i = 0; groups[i]; i ++)
      {
         NSMutableArray* section = [NSMutableArray arrayWithObject:BOXSTRING(groups[i][0])];
         [self.sections addObject:section];
         
         for (int j = 1; groups[i][j]; j ++)
            [section addObject:[RAMenuItemGeneralSetting itemForSetting:setting_data_find_setting(setting_data, groups[i][j])]];
      }

      NSMutableArray* settings = [NSMutableArray arrayWithObjects:@"", nil];
      [self.sections addObject:settings];

      for (const rarch_setting_t* i = setting_data; i->type != ST_NONE; i ++)
         if (i->type == ST_GROUP)
            [settings addObject:[RAMenuItemBasic itemWithDescription:BOXSTRING(i->name) action:
            ^{
               [weakSelf.navigationController pushViewController:[[RASettingsGroupMenu alloc] initWithGroup:i] animated:YES];
            }]];
   }
   
   return self;
}

- (void)dealloc
{
   if (self.pathToSave)
   {
      config_file_t* config = config_file_new([self.pathToSave UTF8String]);
      if (!config)
         config = config_file_new(0);
      
      setting_data_save_config(setting_data_get_list(), config);
      
      config_set_string(config, "system_directory", [[RetroArch_iOS get].systemDirectory UTF8String]);
      config_set_string(config, "savefile_directory", [[RetroArch_iOS get].systemDirectory UTF8String]);
      config_set_string(config, "savestate_directory", [[RetroArch_iOS get].systemDirectory UTF8String]);
      config_file_write(config, [self.pathToSave UTF8String]);
      config_file_free(config);
      
      apple_refresh_config();
   }
}

- (void)deleteCustom
{
   if (self.isCustom && self.pathToSave)
   {
      [[NSFileManager defaultManager] removeItemAtPath:self.pathToSave error:nil];
      self.pathToSave = false;
      
      [self.navigationController popViewControllerAnimated:YES];
   }
}

@end

/*********************************************/
/* RAFrontendSettingsMenu                    */
/* Menu object that displays and allows      */
/* editing of cocoa frontend related         */
/* settings.                                 */
/*********************************************/
@interface RAFrontendSettingsMenu()
@property (nonatomic, retain) NSMutableArray* coreConfigOptions;
@end

@implementation RAFrontendSettingsMenu

- (id)init
{
   const rarch_setting_t* frontend_setting_data = apple_get_frontend_settings();

   if ((self = [super initWithGroup:frontend_setting_data]))
   {      
      RAFrontendSettingsMenu* __weak weakSelf = self;

      self.title = @"Frontend Settings";
      
      RAMenuItemBasic* diagnostic_item = [RAMenuItemBasic itemWithDescription:@"Diagnostic Log"
         action:^{ [weakSelf.navigationController pushViewController:[[RALogMenu alloc] initWithFile:[[RetroArch_iOS get].logPath UTF8String]] animated:YES]; }];
      [self.sections insertObject:@[@"", diagnostic_item] atIndex:0];
  
      _coreConfigOptions = [NSMutableArray array];
      [self.sections addObject:_coreConfigOptions];
   }
   
   return self;
}

- (void)dealloc
{
   setting_data_save_config_path(apple_get_frontend_settings(), [[RetroArch_iOS get].systemConfigPath UTF8String]);
}

- (void)willReloadData
{
   RAFrontendSettingsMenu* __weak weakSelf = self;
   NSMutableArray* cores = self.coreConfigOptions;
   
   [cores removeAllObjects];
   
   [cores addObject:@"Configurations"];
   [cores addObject:[RAMenuItemBasic itemWithDescription:@"Global Core Config"
                                                  action: ^{ [weakSelf showCoreConfigFor:nil]; }]];
   
   [cores addObject:[RAMenuItemBasic itemWithDescription:@"New Config for Core"
                                                  action: ^{ [weakSelf createNewConfig]; }]];
   
   const core_info_list_t* core_list = apple_core_info_list_get();
   for (int i = 0; i < core_list->count; i ++)
   {
      NSString* core_id = apple_get_core_id(&core_list->list[i]);
      if (apple_core_info_has_custom_config([core_id UTF8String]))
      {
         [cores addObject:[RAMenuItemBasic itemWithDescription:BOXSTRING(core_list->list[i].display_name)
                                                   association:core_id
                                                        action: ^(id userdata) { [weakSelf showCoreConfigFor:userdata]; }
                                                        detail: ^(id userdata) { return @""; }]];
      }
   }
}

- (void)viewWillAppear:(BOOL)animated
{
   [super viewWillAppear:animated];
   [self reloadData];
}

- (void)showCoreConfigFor:(NSString*)core
{
   [self.navigationController pushViewController:[[RACoreSettingsMenu alloc] initWithCore:core] animated:YES];
}

- (void)createNewConfig
{
   RAFrontendSettingsMenu* __weak weakSelf = self;
   RAMenuCoreList* list = [[RAMenuCoreList alloc] initWithPath:nil allowAutoDetect:false
      action:^(NSString* core)
      {
         if (!apple_core_info_has_custom_config([core UTF8String]))
         {
            char path[PATH_MAX];
            apple_core_info_get_custom_config([core UTF8String], path, sizeof(path));
         
            if (![[NSFileManager defaultManager] copyItemAtPath:apple_platform.globalConfigFile toPath:BOXSTRING(path) error:nil])
               RARCH_WARN("Could not create custom config at %s", path);
         }
         
         [weakSelf.navigationController popViewControllerAnimated:YES];
      }];
   [self.navigationController pushViewController:list animated:YES];
}

@end

/*********************************************/
/* RACoreOptionsMenu                         */
/* Menu object that allows editing of        */
/* options specific to the running core.     */
/*********************************************/
@interface RACoreOptionsMenu()
@property (nonatomic) uint32_t currentIndex;
@end

@implementation RACoreOptionsMenu

- (id)init
{
   if ((self = [super initWithStyle:UITableViewStyleGrouped]))
   {
      RACoreOptionsMenu* __weak weakSelf = self;
      core_option_manager_t* options = g_extern.system.core_options;
   
      NSMutableArray* section = [NSMutableArray arrayWithObject:@""];
      [self.sections addObject:section];
   
      if (options)
      {
         for (int i = 0; i != core_option_size(options); i ++)
            [section addObject:[RAMenuItemBasic itemWithDescription:BOXSTRING(core_option_get_desc(options, i)) association:nil
               action:^{ [weakSelf editValue:i]; }
               detail:^{ return BOXSTRING(core_option_get_val(options, i)); }]];
      }
      else
         [section addObject:[RAMenuItemBasic itemWithDescription:@"The running core has no options." action:NULL]];
   }
   
   return self;
}

- (void)editValue:(uint32_t)index
{
   RACoreOptionsMenu __weak* weakSelf = self;
   self.currentIndex = index;

   RunActionSheet(core_option_get_desc(g_extern.system.core_options, index), core_option_get_vals(g_extern.system.core_options, index), self.tableView,
   ^(UIActionSheet* actionSheet, NSInteger buttonIndex)
   {
      if (buttonIndex != actionSheet.cancelButtonIndex)
         core_option_set_val(g_extern.system.core_options, self.currentIndex, buttonIndex);
      
      [weakSelf.tableView reloadData];
   });
}

@end

/*********************************************/
/* RAMenuItemCoreList                        */
/* Menu item that handles display and        */
/* selection of an item in RAMenuCoreList.   */
/* This item will not function on anything   */
/* but an RAMenuCoreList type menu.          */
/*********************************************/
@implementation RAMenuItemCoreList

- (id)initWithCore:(NSString*)core parent:(RAMenuCoreList* __weak)parent
{
   if ((self = [super init]))
   {
      _core = core;
      _parent = parent;
   }
   
   return self;
}

- (UITableViewCell*)cellForTableView:(UITableView*)tableView
{
   static NSString* const cell_id = @"RAMenuItemCoreList";

   UITableViewCell* result = [tableView dequeueReusableCellWithIdentifier:cell_id];
   if (!result)
   {
      result = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cell_id];
//      UIButton* infoButton = [UIButton buttonWithType:UIButtonTypeInfoDark];
//      [infoButton addTarget:self action:@selector(infoButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
//      result.accessoryView = infoButton;
   }

   result.textLabel.text = apple_get_core_display_name(self.core);
   return result;
}

- (void)wasSelectedOnTableView:(UITableView*)tableView ofController:(UIViewController*)controller
{
   [self.parent runAction:self.core];
}

@end

/*********************************************/
/* RAMenuCoreList                            */
/* Menu object that displays and allows      */
/* selection from a list of cores.           */
/* If the path is not nil, only cores that   */
/* may support the file is listed.           */
/* If the path is nil, an 'Auto Detect'      */
/* entry is added to the menu, when tapped   */
/* the action function will be called with   */
/* nil as the argument.                      */
/*********************************************/
@implementation RAMenuCoreList

- (id)initWithPath:(NSString*)path allowAutoDetect:(bool)autoDetect action:(void (^)(NSString *))action
{
   if ((self = [super initWithStyle:UITableViewStyleGrouped]))
   {
      self.title = @"Choose Core";
      _action = action;
      _path = path;

      if (autoDetect)
      {
         RAMenuCoreList* __weak weakSelf = self;
         [self.sections addObject: @[@"", [RAMenuItemBasic itemWithDescription:@"Auto Detect"
               action: ^{ if(weakSelf.action) weakSelf.action(nil); }]]];
      }

      NSMutableArray* core_section = [NSMutableArray arrayWithObject:@"Cores"];
      [self.sections addObject:core_section];

      core_info_list_t* core_list = apple_core_info_list_get();
      if (core_list)
      {
         if (_path)
         {
            const core_info_t* core_support = 0;
            size_t core_count = 0;
            core_info_list_get_supported_cores(core_list, [_path UTF8String], &core_support, &core_count);
            
            if (core_count == 1 && _action)
               [self runAction:apple_get_core_id(&core_support[0])];
            else if (core_count > 1)
               [self load:core_count coresFromList:core_support toSection:core_section];
         }
         
         if (!_path || [core_section count] == 1)
            [self load:core_list->count coresFromList:core_list->list toSection:core_section];
      }
   }

   return self;
}

- (void)runAction:(NSString*)coreID
{
   self.actionRan = true;
   
   if (self.action)
      _action(coreID);
}

- (void)load:(uint32_t)count coresFromList:(const core_info_t*)list toSection:(NSMutableArray*)array
{
   for (int i = 0; i < count; i ++)
      [array addObject:[[RAMenuItemCoreList alloc] initWithCore:apple_get_core_id(&list[i]) parent:self]];
}

@end

/*********************************************/
/* RALogMenu                                 */
/* Displays a text file line-by-line.        */
/*********************************************/
@implementation RALogMenu

- (id)initWithFile:(const char*)path
{
   if ((self = [super initWithStyle:UITableViewStylePlain]))
   {
      NSMutableArray* data = [NSMutableArray arrayWithObject:@""];

      fflush(stdout);
      fflush(stderr);
      FILE* file = fopen(path, "r");
      if (file)
      {
         char buffer[1024];
         while (fgets(buffer, 1024, file))
            [data addObject:[RAMenuItemBasic itemWithDescription:BOXSTRING(buffer) action:NULL]];
         fclose(file);
      }
      else
         [data addObject:[RAMenuItemBasic itemWithDescription:@"Logging not enabled" action:NULL]];
      
      [self.sections addObject:data];
      
   }
   
   return self;
}

@end

/*********************************************/
/* RAMenuItemStateSelect                     */
/* Menu item that allows save state slots    */
/* 0-9 to be selected.                       */
/*********************************************/
@implementation RAMenuItemStateSelect

- (UITableViewCell*)cellForTableView:(UITableView*)tableView
{
   static NSString* const cell_id = @"state_slot_setting";

   UITableViewCell* result = [tableView dequeueReusableCellWithIdentifier:cell_id];
   if (!result)
   {
      result = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cell_id];
      result.selectionStyle = UITableViewCellSelectionStyleNone;

      result.textLabel.text = @"Slot";
      
      UISegmentedControl* accessory = [[UISegmentedControl alloc] initWithItems:@[@"0", @"1", @"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9"]];
      [accessory addTarget:[self class] action:@selector(changed:) forControlEvents:UIControlEventValueChanged];
      accessory.segmentedControlStyle = UISegmentedControlStyleBar;
      result.accessoryView = accessory;
   }
   
   [(id)result.accessoryView setSelectedSegmentIndex:(g_extern.state_slot < 10) ? g_extern.state_slot : -1];

   return result;
}

+ (void)changed:(UISegmentedControl*)sender
{
   g_extern.state_slot = sender.selectedSegmentIndex;
}

- (void)wasSelectedOnTableView:(UITableView *)tableView ofController:(UIViewController *)controller
{

}

@end