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

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

void Menu::setParentMenu(Menu* menu) {
    this->parentMenu = menu;
}

void Menu::addEntry(MenuEntry* entry) {
    this->entrys.push_back(entry);
        
    // TODO: Same shit here. Why I get the first element after an increment.
    static uint8_t inc = 0;
    inc++;
    if (inc == 2) {
        this->it = this->entrys.begin();
    }
}

void Menu::printMenu() {
    Serial.println("\n\n");
    for (std::list<MenuEntry*>::iterator iter = this->entrys.begin(); iter != this->entrys.end(); iter++) {
        MenuEntry* selectedEntry = *(iter);
        if (this->it == iter)
            Serial.print("  ");
        Serial.println(selectedEntry->getName());
    }
    this->inSubmenu = false;
}

void Menu::nextEntry() {
    if (this->inSubmenu) {
        MenuEntry* selectedEntry = *(this->it);
        selectedEntry->getMenu()->nextEntry();
        return;
    }

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

void Menu::prevEntry() {
    if (this->inSubmenu) {
        MenuEntry* selectedEntry = *(this->it);
        selectedEntry->getMenu()->prevEntry();
        return;
    }
    std::list<MenuEntry*>::iterator iter = this->entrys.end();
    iter--;
    if (this->it != this->entrys.begin()) {
        Serial.println("--");
        this->it--;
    }
    else {
        Serial.println("begin");
       this->it = iter;
    }
    this->printMenu();
}

void Menu::enterEntry() {
    // TODO: find out why i cannot call runAction() directly from the iterator
    MenuEntry* selectedEntry = *(this->it);

    if (this->inSubmenu) {
        selectedEntry->getMenu()->enterEntry();
        return;
    }

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

void Menu::enterParentMenu() {
    if (this->inSubmenu) {
        MenuEntry* selectedEntry = *(this->it);
        selectedEntry->getMenu()->enterParentMenu();
        return;
    }

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