<?php
/**
 * @package         FireBox
 * @version         1.1.1 Free
 * 
 * @author          FirePlugins <info@fireplugins.com>
 * @link            https://www.fireplugins.com
 * @copyright       Copyright © 2022 FirePlugins All Rights Reserved
 * @license         GNU GPLv3 <http://www.gnu.org/licenses/gpl.html> or later
*/

namespace FireBox\Core\Admin\Analytics;

if (!defined('ABSPATH'))
{
	exit; // Exit if accessed directly.
}

class Toolbar
{
    

    /**
     * The default Toolbar Item
     * 
     * @var  string
     */
    const default_toolbar_item = 'date';

    /**
     * Configuration data
     * 
     * @var array
     */
    private $configuration;

    /**
     * Toolbar Items
     * 
     * @var  array
     */
    private $settings;

    /**
     * Selected Toolbar Items
     * 
     * @var  array
     */
    private $selectedToolbarItems;

    /**
     * Toolbar Items Classes Objects
     * 
     * @var  array
     */
    private $toolbarItems;

    /**
     * Which toolbar item we currently edited
     * 
     * @var  string
     */
    private $editing_toolbar_item;

    /**
     * DB
     * 
     * @var  DB
     */
    private $db;

    /**
     * Toolbar Constructor
     * 
     * @param   array    $toolbarItems
     * 
     * @return  void
     */
    public function __construct($configuration = [], $db = null, $toolbarItems = null)
    {
        $this->configuration = $configuration;
        $this->db = $db;
        
        if (!$toolbarItems)
        {
            $toolbarItems = $this->initializeToolbarItems();
        }
        $this->toolbarItems = $toolbarItems;

        $this->setUpAvailableToolbarItems();
        
        
    }

    

    /**
     * Retrieves the currently selected Toolbar Items
     * 
     * @return  array
     */
    public function setSelectedToolbarItems($selected_toolbar_items = [])
    {
        if (!$selected_toolbar_items)
        {
            $selected_toolbar_items = $this->getDefaultToolbarItems();
        }
        
        // if the saved toolbar items are the ones we have already processed, then return them and do not do the process below again.
        if ($this->selectedToolbarItems == $selected_toolbar_items)
        {
            return $this->selectedToolbarItems;
        }

        

        // validate and set other toolbar items data
        foreach ($selected_toolbar_items as $key => &$value)
        {
            if (!$key)
            {
                continue;
            }

            if (empty($value))
            {
                unset($selected_toolbar_items[$key]);
                continue;
            }

            // ensure only valid toolbar items are processed
            if (!isset($this->toolbarItems[$key]))
            {
                unset($selected_toolbar_items[$key]);
                continue;
            }

            $toolbarItem = $this->toolbarItems[$key];
            
            // set popup title
            $value['popup_title'] = $toolbarItem->getPopupTitle();
            
            $itemValue = isset($value['value']) ? $value['value'] : '';

            // x axis labels
            $xAxisLabels = $toolbarItem->getXAxisLabels($value['method'], $value['options_key'], $itemValue);
            $value['xAxisLabel'] = $xAxisLabels['xAxisLabel'];
            $value['xAxisLabelPreviousPeriod'] = $xAxisLabels['xAxisLabelPreviousPeriod'];

            // unset toolbar item if no value is returned
            if (!$toolbarItemLabelValue = $toolbarItem->getToolbarItemLabelValue($value))
            {
                unset($selected_toolbar_items[$key]);
                continue;
            }
            
            $value['title'] = $value['popup_title'] . ': ' . $toolbarItemLabelValue;
        }

        // add date if not exist
        $this->checkAndAddDateToolbarItem($selected_toolbar_items);

        $this->selectedToolbarItems = $selected_toolbar_items;
    }

    public function getSelectedToolbarItems()
    {
        return $this->selectedToolbarItems;
    }

    /**
     * Adds the date toolbar item at the front of the selected toolbar_items if it does not exist
     * 
     * @param   array  $selected_toolbar_items
     * 
     * @return  void
     */
    private function checkAndAddDateToolbarItem(&$selected_toolbar_items)
    {
        if (!isset($selected_toolbar_items[self::default_toolbar_item]))
        {
            $selected_toolbar_items = $this->toolbarItems[self::default_toolbar_item]->getDefaultToolbarItemData() + $selected_toolbar_items;
        }
    }

    

    /**
     * Default Selected Toolbar Items
     * 
     * @return  array
     */
    private function getDefaultSelectedToolbarItems()
    {
        return [
            'toolbar_items' => $this->getDefaultToolbarItems(),
            'editing_toolbar_item' => self::default_toolbar_item
        ];
    }

    /**
     * Returns the default Toolbar Items
     * - Date - Filter : This Month
     * 
     * @return  array
     */
    public function getDefaultToolbarItems()
    {
        return [
            'date' => [
                'method' => 'filter',
                'options_key' => 'this_month',
            ]
        ];
    }

    /**
     * Initialize all toolbar items
     * 
     * @return  array
     */
    private function initializeToolbarItems()
    {
        // get all Toolbar Namespace Files
        if (!$files = \scandir(__DIR__ . '/Toolbar'))
        {
            return [];
        }

        $items = [];

        foreach ($files as $key => $file)
        {
            // ignore unimportant files
            if (in_array($file, ['index.php', '.', '..']))
            {
                continue;
            }

            $file = basename($file, '.php');

            // instantiate class
            $className = '\FireBox\Core\Admin\Analytics\Toolbar\\' . $file;

            if (!class_exists($className))
            {
                continue;
            }
            
            $items[strtolower($file)] = new $className($this->db);
        }

        return $items;
    }

    /**
     * Set up each available toolbar item by giving the selected toolbar items to each toolbar item
     * 
     * @return  void
     */
    public function setUpAvailableToolbarItems()
    {
        foreach ($this->toolbarItems as $key => $value)
        {
            $this->toolbarItems[$key]->setupVariables($this->configuration, $this->selectedToolbarItems);
        }
    }

    /**
     * Returns the Toolbar Items
     * 
     * @return  array
     */
    public function getToolbarItems()
    {
        return $this->toolbarItems;
    }

    /**
     * Returns the toolbar settings
     * 
     * @return  array
     */
    public function getSettings()
    {
        return $this->settings;
    }

    public function setSelectedToolbarItemsValue($value)
    {
        $this->selectedToolbarItems = $value;
    }

    public function setEditingToolbarItem($editing_toolbar_item)
    {
        $this->editing_toolbar_item = $editing_toolbar_item;
    }
    
    public function getConfiguration()
    {
        return $this->configuration;
    }
}