/**
 * @file menu.cpp
 * @author Alexander Klein (alex@kleiax.de)
 * @brief Implementation of the class Menu
 * @version 0.1
 * @date 2022-01-12
 * 
 * @copyright Copyright (c) 2022
 * 
 */
#include "menu.h"

Menu::Menu() {
    this->selectedEntry = this->entrys.begin();
}

Menu::~Menu() {
    for (std::list<MenuAction*>::iterator iter = this->entrys.begin(); iter != this->entrys.end(); iter++)
        delete *iter;
}

void Menu::addEntry(MenuAction* entry) {
    this->entrys.push_back(entry);

    if (this->entrys.size() == 2)
        this->selectedEntry = this->entrys.begin();
}

bool Menu::isInSubmenu() {
    return this->inSubmenu;
}

void Menu::printMenu() {
    if (this->lcd) {
        lcd->clear();
        lcd->setCursor(0, 0);
        lcd->print("-> ");
        lcd->print((**this->selectedEntry).getName());
        lcd->setCursor(0, 1);
        std::list<MenuAction*>::iterator iter = this->selectedEntry;
        iter++;
        if (iter != this->entrys.end()) {
            lcd->print((**iter).getName());
        } else
            lcd->print((*this->entrys.begin())->getName());
    } 
    std::cout << std::endl;
    for (std::list<MenuAction*>::iterator iter = this->entrys.begin(); iter != this->entrys.end(); iter++) {
        if (this->selectedEntry == iter)
            std::cout << "  " << (**iter).getName() << std::endl;
        else
            std::cout << (**iter).getName() << std::endl;
    }
    this->inSubmenu = false;
}

void Menu::update() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->update();
        return;
    }
}

void Menu::down() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->down();
        return;
    }

    // TODO: Why I need the fucking next two lines? here and in the next function
    std::list<MenuAction*>::iterator iter = this->selectedEntry;
    iter++;
    if (iter != this->entrys.end()) 
        this->selectedEntry++;
    else
       this->selectedEntry = this->entrys.begin(); 
    this->printMenu();
}

void Menu::up() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->up();
        return;
    }
    std::list<MenuAction*>::iterator iter = this->entrys.end();
    iter--;
    if (this->selectedEntry != this->entrys.begin()) {
        this->selectedEntry--;
    }
    else {
       this->selectedEntry = iter;
    }
    this->printMenu();
}

void Menu::right() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->right();
        return;
    }

    if ((**this->selectedEntry).getIsMenu()) {
        this->inSubmenu = true;
        (**this->selectedEntry).getMenu()->setParentMenu(this);
    } 
    (**this->selectedEntry).runAction();
}

void Menu::left() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->left();
        return;
    }

    if (parentMenu)
        this->parentMenu->printMenu();
}

void Menu::yes() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->yes();
        return;
    }

    this->right();
}

void Menu::no() {
    if (this->inSubmenu) {
        (**this->selectedEntry).getMenu()->no();
        return;
    }

    this->left();
}