/****************************************************************************
 * Copyright (C) 2010
 * by Dimok
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any
 * damages arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any
 * purpose, including commercial applications, and to alter it and
 * redistribute it freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you
 * must not claim that you wrote the original software. If you use
 * this software in a product, an acknowledgment in the product
 * documentation would be appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and
 * must not be misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source
 * distribution.
 ***************************************************************************/
#include <string.h>
#include <unistd.h>

#include "FlyingButtonsMenu.hpp"
#include "utils/StringTools.h"
#include "language/gettext.h"
#include "themes/CTheme.h"
#include "menu/menus.h"
#include "sys.h"

#define FADE_SPEED 20
#define SLIDE_SPEED 35
#define DISPLAY_BUTTONS    4

FlyingButtonsMenu::FlyingButtonsMenu(const char * menu_title)
    :   GuiWindow(screenwidth, screenheight)

{
	currentPage = 0;
	returnMenu = MENU_NONE;
	ParentMenu = MENU_DISCLIST;
	CurrentMenu = NULL;
    titleTxt = NULL;
	GoLeftImg = NULL;
	GoLeftBtn = NULL;
	GoRightImg = NULL;
	GoRightBtn = NULL;
	MenuTitle = menu_title ? menu_title : " ";

    trigA = new GuiTrigger();
    trigHome = new GuiTrigger();
    trigB = new GuiTrigger();
    trigL = new GuiTrigger();
    trigR = new GuiTrigger();
    trigMinus = new GuiTrigger();
    trigPlus = new GuiTrigger();
    trigA->SetSimpleTrigger(-1, WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A, PAD_BUTTON_A);
    trigHome->SetButtonOnlyTrigger(-1, WPAD_BUTTON_HOME | WPAD_CLASSIC_BUTTON_HOME, 0);
    trigB->SetButtonOnlyTrigger(-1, WPAD_BUTTON_B | WPAD_CLASSIC_BUTTON_B, PAD_BUTTON_B);
    trigL->SetButtonOnlyTrigger(-1, WPAD_BUTTON_LEFT | WPAD_CLASSIC_BUTTON_LEFT, PAD_BUTTON_LEFT);
    trigR->SetButtonOnlyTrigger(-1, WPAD_BUTTON_RIGHT | WPAD_CLASSIC_BUTTON_RIGHT, PAD_BUTTON_RIGHT);
    trigMinus->SetButtonOnlyTrigger(-1, WPAD_BUTTON_MINUS | WPAD_CLASSIC_BUTTON_MINUS, 0);
    trigPlus->SetButtonOnlyTrigger(-1, WPAD_BUTTON_PLUS | WPAD_CLASSIC_BUTTON_PLUS, 0);

    btnOutline = Resources::GetImageData("button_dialogue_box.png");
    settingsbg = Resources::GetImageData("settings_background.png");
    MainButtonImgData = Resources::GetImageData("settings_title.png");
    MainButtonImgOverData = Resources::GetImageData("settings_title_over.png");
    PageindicatorImgData = Resources::GetImageData("pageindicator.png");
    arrow_left = Resources::GetImageData("startgame_arrow_left.png");
    arrow_right = Resources::GetImageData("startgame_arrow_right.png");

    settingsbackground = new GuiImage(settingsbg);
    Append(settingsbackground);

    homeBtn = new GuiButton(1, 1);
    homeBtn->SetTrigger(trigHome);
    Append(homeBtn);

    backBtnTxt = new GuiText(tr( "Back" ), 22, Theme.prompttext);
    backBtnTxt->SetMaxWidth(btnOutline->GetWidth() - 30);
    backBtnImg = new GuiImage(btnOutline);
    if (Settings.wsprompt == ON)
    {
        backBtnTxt->SetWidescreen(Settings.widescreen);
        backBtnImg->SetWidescreen(Settings.widescreen);
    }
    backBtn = new GuiButton(backBtnImg, backBtnImg, 2, 3, -195, 400, trigA, btnSoundOver, btnSoundClick2, 1);
    backBtn->SetLabel(backBtnTxt);
    backBtn->SetTrigger(trigB);
    Append(backBtn);

    SetEffect(EFFECT_FADE, FADE_SPEED);
}

FlyingButtonsMenu::~FlyingButtonsMenu()
{
    ResumeGui();

    SetEffect(EFFECT_FADE, -FADE_SPEED);
    while(parentElement && this->GetEffect() > 0) usleep(100);

    HaltGui();
    if(parentElement)
        ((GuiWindow *) parentElement)->Remove(this);

    RemoveAll();
    HideMenu();

    delete trigA;
    delete trigHome;
    delete trigB;
    delete trigL;
    delete trigR;
    delete trigMinus;
    delete trigPlus;
    delete settingsbackground;
    delete homeBtn;
    delete btnOutline;
    delete settingsbg;
    delete MainButtonImgData;
    delete MainButtonImgOverData;
    delete PageindicatorImgData;
    delete arrow_left;
    delete arrow_right;
    delete backBtnTxt;
    delete backBtnImg;
    delete backBtn;

    ResumeGui();
}

void FlyingButtonsMenu::SetPageIndicators()
{
    HaltGui();

    for(u32 i = 0; i < PageIndicatorBtn.size(); ++i)
    {
        Remove(PageIndicatorBtn[i]);
        delete PageindicatorImg[i];
        delete PageindicatorTxt[i];
        delete PageIndicatorBtn[i];
    }
    PageindicatorImg.clear();
    PageindicatorTxt.clear();
    PageIndicatorBtn.clear();

    int IndicatorCount = ceil(MainButton.size()/(1.0f*DISPLAY_BUTTONS));

    for(int i = 0; i < IndicatorCount; ++i)
    {
        PageindicatorImg.push_back(new GuiImage(PageindicatorImgData));
        PageindicatorTxt.push_back(new GuiText(fmt("%i", i+1), 22, ( GXColor ) {0, 0, 0, 255}));
        PageIndicatorBtn.push_back(new GuiButton(PageindicatorImgData->GetWidth(), PageindicatorImgData->GetHeight()));
        PageIndicatorBtn[i]->SetAlignment(ALIGN_CENTRE, ALIGN_TOP);
        PageIndicatorBtn[i]->SetPosition(270-IndicatorCount*35+35*i, 400);
        PageIndicatorBtn[i]->SetImage(PageindicatorImg[i]);
        PageIndicatorBtn[i]->SetLabel(PageindicatorTxt[i]);
        PageIndicatorBtn[i]->SetSoundOver(btnSoundOver);
        PageIndicatorBtn[i]->SetSoundClick(btnSoundClick);
        PageIndicatorBtn[i]->SetTrigger(trigA);
        PageIndicatorBtn[i]->SetEffectGrow();
        PageIndicatorBtn[i]->SetAlpha(i == currentPage ? 255 : 50);
        Append(PageIndicatorBtn[i]);
    }
}

void FlyingButtonsMenu::SetMainButton(int position, const char * ButtonText, GuiImageData * imageData, GuiImageData * imageOver)
{
    //! Don't allow operating gui mode while adding/setting the buttons
    HaltGui();

    if(position < (int) MainButton.size())
    {
        delete MainButtonImg[position];
        delete MainButtonImgOver[position];
        delete MainButtonTxt[position];
        delete MainButton[position];
    }
    else
    {
        MainButtonImg.resize(position+1);
        MainButtonImgOver.resize(position+1);
        MainButtonTxt.resize(position+1);
        MainButton.resize(position+1);
    }

    MainButtonImg[position] = new GuiImage(imageData);
    MainButtonImgOver[position] = new GuiImage(imageOver);

    MainButtonTxt[position] = new GuiText(ButtonText, 22, ( GXColor ) {0, 0, 0, 255});
    MainButtonTxt[position]->SetMaxWidth(MainButtonImg[position]->GetWidth());

    MainButton[position] = new GuiButton(imageData->GetWidth(), imageData->GetHeight());
    MainButton[position]->SetAlignment(ALIGN_CENTRE, ALIGN_TOP);
    MainButton[position]->SetPosition(0, 90+(position % DISPLAY_BUTTONS)*70);
    MainButton[position]->SetImage(MainButtonImg[position]);
    MainButton[position]->SetImageOver(MainButtonImgOver[position]);
    MainButton[position]->SetLabel(MainButtonTxt[position]);
    MainButton[position]->SetSoundOver(btnSoundOver);
    MainButton[position]->SetSoundClick(btnSoundClick);
    MainButton[position]->SetEffectGrow();
    MainButton[position]->SetTrigger(trigA);
}

void FlyingButtonsMenu::HideMenu()
{
    HaltGui();

    if(titleTxt)
        Remove(titleTxt);
    if(GoLeftBtn)
        Remove(GoLeftBtn);
    if(GoRightBtn)
        Remove(GoRightBtn);

    if(titleTxt)
        delete titleTxt;
    if(GoLeftImg)
        delete GoLeftImg;
    if(GoLeftBtn)
        delete GoLeftBtn;
    if(GoRightImg)
        delete GoRightImg;
    if(GoRightBtn)
        delete GoRightBtn;
    titleTxt = NULL;
    GoLeftImg = NULL;
    GoLeftBtn = NULL;
    GoRightImg = NULL;
    GoRightBtn = NULL;

    for(u32 i = 0; i < MainButton.size(); ++i)
    {
        Remove(MainButton[i]);
        delete MainButtonImg[i];
        delete MainButtonImgOver[i];
        delete MainButtonTxt[i];
        delete MainButton[i];
    }
    for(u32 i = 0; i < PageIndicatorBtn.size(); ++i)
    {
        Remove(PageIndicatorBtn[i]);
        delete PageindicatorImg[i];
        delete PageindicatorTxt[i];
        delete PageIndicatorBtn[i];
    }

    PageindicatorImg.clear();
    PageindicatorTxt.clear();
    PageIndicatorBtn.clear();
    MainButtonImg.clear();
    MainButtonImgOver.clear();
    MainButtonTxt.clear();
    MainButton.clear();
}

void FlyingButtonsMenu::ShowMenu()
{
    //! Free memory if not done yet because new is allocated
    HideMenu();

    titleTxt = new GuiText(MenuTitle.c_str(), 28, ( GXColor ) {0, 0, 0, 255});
    titleTxt->SetAlignment(ALIGN_CENTRE, ALIGN_TOP);
    titleTxt->SetPosition(0, 40);
    titleTxt->SetMaxWidth(310, SCROLL_HORIZONTAL);
    Append(titleTxt);

    GoLeftImg = new GuiImage(arrow_left);
    GoLeftBtn = new GuiButton(GoLeftImg->GetWidth(), GoLeftImg->GetHeight());
    GoLeftBtn->SetAlignment(ALIGN_LEFT, ALIGN_MIDDLE);
    GoLeftBtn->SetPosition(25, -25);
    GoLeftBtn->SetImage(GoLeftImg);
    GoLeftBtn->SetSoundOver(btnSoundOver);
    GoLeftBtn->SetSoundClick(btnSoundClick2);
    GoLeftBtn->SetEffectGrow();
    GoLeftBtn->SetTrigger(trigA);
    GoLeftBtn->SetTrigger(trigL);
    GoLeftBtn->SetTrigger(trigMinus);
    Append(GoLeftBtn);

    GoRightImg = new GuiImage(arrow_right);
    GoRightBtn = new GuiButton(GoRightImg->GetWidth(), GoRightImg->GetHeight());
    GoRightBtn->SetAlignment(ALIGN_RIGHT, ALIGN_MIDDLE);
    GoRightBtn->SetPosition(-25, -25);
    GoRightBtn->SetImage(GoRightImg);
    GoRightBtn->SetSoundOver(btnSoundOver);
    GoRightBtn->SetSoundClick(btnSoundClick2);
    GoRightBtn->SetEffectGrow();
    GoRightBtn->SetTrigger(trigA);
    GoRightBtn->SetTrigger(trigR);
    GoRightBtn->SetTrigger(trigPlus);
    Append(GoRightBtn);

    SetupMainButtons();
    AddMainButtons();

    ShowButtonsEffects(EFFECT_FADE, FADE_SPEED);
}

void FlyingButtonsMenu::AddMainButtons()
{
    HaltGui();

    for(u32 i = 0; i < MainButton.size(); ++i)
        Remove(MainButton[i]);

    int FirstItem = currentPage*DISPLAY_BUTTONS;

    for(int i = FirstItem; i < (int) MainButton.size() && i < FirstItem+DISPLAY_BUTTONS; ++i)
    {
        Append(MainButton[i]);
    }

    SetPageIndicators();
}

void FlyingButtonsMenu::ShowButtonsEffects(int effect, int effect_speed)
{
    int FirstItem = currentPage*DISPLAY_BUTTONS;
    if(FirstItem < 0)
        FirstItem = 0;

    HaltGui();

    for(int i = FirstItem; i < (int) MainButton.size() && i < FirstItem+DISPLAY_BUTTONS; ++i)
    {
        MainButton[i]->StopEffect();
        MainButton[i]->SetEffect(effect, effect_speed);
    }

    ResumeGui();

    if(FirstItem < 0 || FirstItem >= (int) MainButton.size())
        return;

    //! Don't lock on fade in for initiation purpose
    if(effect & EFFECT_FADE && effect_speed > 0)
        return;

    while (parentElement && MainButton[FirstItem]->GetEffect() > 0)
        usleep(100);
}

void FlyingButtonsMenu::SlideButtons(int direction)
{
    int SlideEffectIN = 0;

    if(direction == SLIDE_LEFT)
    {
        ShowButtonsEffects(EFFECT_SLIDE_RIGHT | EFFECT_SLIDE_OUT, SLIDE_SPEED);
        SlideEffectIN = EFFECT_SLIDE_LEFT | EFFECT_SLIDE_IN;

        currentPage--;

        if(currentPage < 0)
            currentPage = MainButton.size() > 0 ? ceil(MainButton.size()/4.0f)-1 : 0;
    }
    else
    {
        ShowButtonsEffects(EFFECT_SLIDE_LEFT | EFFECT_SLIDE_OUT, SLIDE_SPEED);
        SlideEffectIN = EFFECT_SLIDE_RIGHT | EFFECT_SLIDE_IN;

        currentPage++;

        if(currentPage >= ceil(MainButton.size()/4.0f))
            currentPage = 0;
    }

    AddMainButtons();

    ShowButtonsEffects(SlideEffectIN, SLIDE_SPEED);
}

int FlyingButtonsMenu::MainLoop()
{
    usleep(100);

    if(shutdown)
        Sys_Shutdown();
    else if(reset)
        Sys_Reboot();

    if(backBtn->GetState() == STATE_CLICKED)
    {
        if(CurrentMenu)
        {
            DeleteSettingsMenu();
            ShowMenu();
        }
        else
        {
            return ParentMenu;
        }
        backBtn->ResetState();
    }
    else if(GoRightBtn && GoRightBtn->GetState() == STATE_CLICKED)
    {
        SlideButtons(SLIDE_RIGHT);
        GoRightBtn->ResetState();
    }
    else if(GoLeftBtn && GoLeftBtn->GetState() == STATE_CLICKED)
    {
        SlideButtons(SLIDE_LEFT);
        GoLeftBtn->ResetState();
    }
    else if(homeBtn->GetState() == STATE_CLICKED)
    {
        Settings.Save();
        if(CurrentMenu) CurrentMenu->SetState(STATE_DISABLED);
        bgMusic->Pause();
        int choice = WindowExitPrompt();
        bgMusic->Resume();
        if (choice == 3)
            Sys_LoadMenu(); // Back to System Menu
        else if (choice == 2)
            Sys_BackToLoader();
        homeBtn->ResetState();
        if(CurrentMenu) CurrentMenu->SetState(STATE_DEFAULT);
    }
    else if(CurrentMenu)
    {
        int newMenu = CurrentMenu->GetMenu();
        if(newMenu != MENU_NONE)
            return newMenu;
    }

    for(u32 i = 0; i < PageIndicatorBtn.size(); ++i)
    {
        if(PageIndicatorBtn[i]->GetState() != STATE_CLICKED)
            continue;

        if(i < (u32) currentPage)
        {
            ShowButtonsEffects(EFFECT_SLIDE_RIGHT | EFFECT_SLIDE_OUT, SLIDE_SPEED);
            currentPage = i;
            AddMainButtons();
            ShowButtonsEffects(EFFECT_SLIDE_LEFT | EFFECT_SLIDE_IN, SLIDE_SPEED);
        }
        else if(i > (u32) currentPage)
        {
            ShowButtonsEffects(EFFECT_SLIDE_LEFT | EFFECT_SLIDE_OUT, SLIDE_SPEED);
            currentPage = i;
            AddMainButtons();
            ShowButtonsEffects(EFFECT_SLIDE_RIGHT | EFFECT_SLIDE_IN, SLIDE_SPEED);
        }

        PageIndicatorBtn[i]->ResetState();
    }

    for(u32 i = 0; i < MainButton.size(); ++i)
    {
        if(MainButton[i]->GetState() != STATE_CLICKED)
            continue;

        MainButton[i]->ResetState();

        CreateSettingsMenu(i);
        break;
    }

    return returnMenu;
}