<?php
/*
* 2007-2014 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2014 PrestaShop SA
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

if (!defined('_PS_VERSION_'))
	exit;

class DashGoals extends Module
{
	protected static $month_labels = array();
	protected static $types = array('traffic', 'conversion', 'avg_cart_value');

	protected static $real_color = array('#9E5BA1', '#00A89C', '#3AC4ED', '#F99031');
	protected static $more_color = array('#803E84', '#008E7E', '#20B2E7', '#F66E1B');
	protected static $less_color = array('#BC77BE', '#00C2BB', '#51D6F2', '#FBB244');

	public function __construct()
	{
		$this->name = 'dashgoals';
		$this->tab = 'dashboard';
		$this->version = '0.6.2';
		$this->author = 'PrestaShop';

		parent::__construct();

		$this->displayName = $this->l('Dashboard Goals');
		$this->ps_versions_compliancy = array('min' => '1.6', 'max' => _PS_VERSION_);

		Dashgoals::$month_labels = array(
			'01' => $this->l('January'),
			'02' => $this->l('February'),
			'03' => $this->l('March'),
			'04' => $this->l('April'),
			'05' => $this->l('May'),
			'06' => $this->l('June'),
			'07' => $this->l('July'),
			'08' => $this->l('August'),
			'09' => $this->l('September'),
			'10' => $this->l('October'),
			'11' => $this->l('November'),
			'12' => $this->l('December')
		);
	}

	public function install()
	{
		Configuration::updateValue('PS_DASHGOALS_CURRENT_YEAR', date('Y'));
		for ($month = '01'; $month <= 12; $month = sprintf('%02d', $month + 1))
		{
			$key = Tools::strtoupper('dashgoals_traffic_'.$month.'_'.date('Y'));
			if (!ConfigurationKPI::get($key))
				ConfigurationKPI::updateValue($key, 600);
			$key = Tools::strtoupper('dashgoals_conversion_'.$month.'_'.date('Y'));
			if (!ConfigurationKPI::get($key))
				ConfigurationKPI::updateValue($key, 2);
			$key = Tools::strtoupper('dashgoals_avg_cart_value_'.$month.'_'.date('Y'));
			if (!ConfigurationKPI::get($key))
				ConfigurationKPI::updateValue($key, 80);
		}

		// Prepare tab
		$tab = new Tab();
		$tab->active = 1;
		$tab->class_name = 'AdminDashgoals';
		$tab->name = array();
		foreach (Language::getLanguages(true) as $lang)
			$tab->name[$lang['id_lang']] = 'Dashgoals';
		$tab->id_parent = -1;
		$tab->module = $this->name;

		return (
			$tab->add()
			&& parent::install()
			&& $this->registerHook('dashboardZoneTwo')
			&& $this->registerHook('dashboardData')
			&& $this->registerHook('actionAdminControllerSetMedia')
		);
	}

	public function uninstall()
	{
		$id_tab = (int)Tab::getIdFromClassName('AdminDashgoals');
		if ($id_tab)
		{
			$tab = new Tab($id_tab);
			$tab->delete();
		}

		return parent::uninstall();
	}

	public function hookActionAdminControllerSetMedia()
	{
		if (get_class($this->context->controller) == 'AdminDashboardController')
			$this->context->controller->addJs($this->_path.'views/js/'.$this->name.'.js');
	}

	public function setMonths($year)
	{
		$months = array();
		for ($i = '01'; $i <= 12; $i = sprintf('%02d', $i + 1))
			$months[$i.'_'.$year] = array('label' => Dashgoals::$month_labels[$i], 'values' => array());

		foreach (Dashgoals::$types as $type)
			foreach ($months as $month => &$month_row)
			{
				$key = 'dashgoals_'.$type.'_'.$month;
				if (Tools::isSubmit('submitDashGoals'))
					ConfigurationKPI::updateValue(Tools::strtoupper($key), (float)Tools::getValue($key));
				$month_row['values'][$type] = ConfigurationKPI::get(Tools::strtoupper($key));
			}

		return $months;
	}

	public function hookDashboardZoneTwo($params)
	{
		$year = Configuration::get('PS_DASHGOALS_CURRENT_YEAR');
		$months = $this->setMonths($year);

		$this->context->smarty->assign(
			array(
				'colors' => self::$real_color,
				'currency' => $this->context->currency,
				'goals_year' => $year,
				'goals_months' => $months,
				'dashgoals_ajax_link' => $this->context->link->getAdminLink('AdminDashgoals')
			)
		);

		return $this->display(__FILE__, 'dashboard_zone_two.tpl');
	}

	public function hookDashboardData($params)
	{
		$year = ((isset($params['extra']) && $params['extra'] > 1970 && $params['extra'] < 2999) ? $params['extra'] : Configuration::get('PS_DASHGOALS_CURRENT_YEAR'));

		return array('data_chart' => array('dash_goals_chart1' => $this->getChartData($year)));
	}

	protected function fakeConfigurationKPI_get($key)
	{
		$start = array(
			'TRAFFIC' => 3000,
			'CONVERSION' => 2,
			'AVG_CART_VALUE' => 90
		);

		if (preg_match('/^DASHGOALS_([A-Z_]+)_([0-9]{2})/', $key, $matches))
		{
			if ($matches[1] == 'TRAFFIC')
				return $start[$matches[1]] * (1 + ($matches[2] - 1) / 10);
			else
				return $start[$matches[1]];
		}
	}

	public function getChartData($year)
	{
		// There are stream types (different charts) and for each types there are 3 available zones (one color for the goal, one if you over perform and one if you under perfom)
		$stream_types = array(
			array('type' => 'traffic', 'title' => $this->l('Traffic'), 'unit_text' => $this->l('visits')),
			array('type' => 'conversion', 'title' => $this->l('Conversion'), 'unit_text' => ''),
			array('type' => 'avg_cart_value', 'title' => $this->l('Average cart value'), 'unit_text' => ''),
			array('type' => 'sales', 'title' => $this->l('Sales'), 'unit_text' => '')
		);
		$stream_zones = array(
			array('zone' => 'real', 'text' => ''),
			array('zone' => 'more', 'text' => $this->l('Goal exceeded')),
			array('zone' => 'less', 'text' => $this->l('Goal not reached'))
		);

		// We initialize all the streams types for all the zones
		$streams = array();
		$average_goals = array();

		foreach ($stream_types as $key => $stream_type)
		{
			$streams[$stream_type['type']] = array();
			foreach ($stream_zones as $stream_zone)
				$streams[$stream_type['type']][$stream_zone['zone']] = array(
					'key' => $stream_type['type'].'_'.$stream_zone['zone'],
					'title' => $stream_type['title'],
					'unit_text' => $stream_type['unit_text'],
					'zone_text' => $stream_zone['text'],
					'color' => ($stream_zone['zone'] == 'more' ? self::$more_color[$key] : ($stream_zone['zone'] == 'less' ? self::$less_color[$key] : self::$real_color[$key])),
					'values' => array(),
					'disabled' => $stream_type['type'] == 'sales' ? false : true
				);

			$average_goals[$stream_type['type']] = 0;
		}

		if (Configuration::get('PS_DASHBOARD_SIMULATION'))
		{
			$visits = $orders = $sales = array();
			$from = strtotime(date('Y-01-01 00:00:00'));
			$to = strtotime(date('Y-12-31 00:00:00'));
			for ($date = $from; $date <= $to; $date = strtotime('+1 day', $date))
			{
				$visits[$date] = round(rand(2000, 5000));
				$orders[$date] = round(rand(40, 100));
				$sales[$date] = round(rand(3000, 9000), 2);
			}

			// We need to calculate the average value of each goals for the year, this will be the base rate for "100%"
			for ($i = '01'; $i <= 12; $i = sprintf('%02d', $i + 1))
			{
				$average_goals['traffic'] += $this->fakeConfigurationKPI_get('DASHGOALS_TRAFFIC_'.$i.'_'.$year);
				$average_goals['conversion'] += $this->fakeConfigurationKPI_get('DASHGOALS_CONVERSION_'.$i.'_'.$year);
				$average_goals['avg_cart_value'] += $this->fakeConfigurationKPI_get('DASHGOALS_AVG_CART_VALUE_'.$i.'_'.$year);
			}
			foreach ($average_goals as &$average_goal)
				$average_goal /= 12;
			$average_goals['sales'] = $average_goals['traffic'] * $average_goals['conversion'] / 100 * $average_goals['avg_cart_value'];

			// Now we can calculate the value for every months
			for ($i = '01'; $i <= 12; $i = sprintf('%02d', $i + 1))
			{
				$timestamp = strtotime($year.'-'.$i.'-01');

				$month_goal = $this->fakeConfigurationKPI_get('DASHGOALS_TRAFFIC_'.$i.'_'.$year);
				$value = (isset($visits[$timestamp]) ? $visits[$timestamp] : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['traffic'], $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['traffic'] = $value;
				$stream_values['real']['goal'] = $month_goal;
				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['traffic'] = $value;
				$stream_values['more']['traffic'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = $goal_diff;
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = $goal_diff;

				if ($value == 0)
				{
					$streams['traffic']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['traffic'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];

				$month_goal = $this->fakeConfigurationKPI_get('DASHGOALS_CONVERSION_'.$i.'_'.$year);
				$value = 100 * ((isset($visits[$timestamp]) && $visits[$timestamp] && isset($orders[$timestamp]) && $orders[$timestamp]) ? ($orders[$timestamp] / $visits[$timestamp]) : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['conversion'], $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['conversion'] = round($value, 2);
				$stream_values['real']['goal'] = round($month_goal, 2);
				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['conversion'] = $value;
				$stream_values['more']['conversion'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				if ($value == 0)
				{
					$streams['conversion']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['conversion'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];

				$month_goal = $this->fakeConfigurationKPI_get('DASHGOALS_AVG_CART_VALUE_'.$i.'_'.$year);
				$value = ((isset($orders[$timestamp]) && $orders[$timestamp] && isset($sales[$timestamp]) && $sales[$timestamp]) ? ($sales[$timestamp] / $orders[$timestamp]) : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['avg_cart_value'], $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['avg_cart_value'] = $value;
				$stream_values['real']['goal'] = $month_goal;
				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['avg_cart_value'] = $value;
				$stream_values['more']['avg_cart_value'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = $goal_diff;
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = $goal_diff;

				if ($value == 0)
				{
					$streams['avg_cart_value']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['avg_cart_value'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];

				$month_goal = $this->fakeConfigurationKPI_get('DASHGOALS_TRAFFIC_'.$i.'_'.$year) * $this->fakeConfigurationKPI_get('DASHGOALS_CONVERSION_'.$i.'_'.$year) / 100 * $this->fakeConfigurationKPI_get('DASHGOALS_AVG_CART_VALUE_'.$i.'_'.$year);
				$value = (isset($sales[$timestamp]) ? $sales[$timestamp] : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['sales'], $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['sales'] = $value;
				$stream_values['real']['goal'] = $month_goal;

				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['sales'] = $value;
				$stream_values['more']['sales'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = $goal_diff;
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = $goal_diff;

				if ($value == 0)
				{
					$streams['sales']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['sales'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];
			}
		}
		else
		{
			// Retrieve gross data from AdminStatsController
			$visits = AdminStatsController::getVisits(false, $year.date('-01-01'), $year.date('-12-31'), 'month');
			$orders = AdminStatsController::getOrders($year.date('-01-01'), $year.date('-12-31'), 'month');
			$sales = AdminStatsController::getTotalSales($year.date('-01-01'), $year.date('-12-31'), 'month');

			// We need to calculate the average value of each goals for the year, this will be the base rate for "100%"
			for ($i = '01'; $i <= 12; $i = sprintf('%02d', $i + 1))
			{
				$average_goals['traffic'] += ConfigurationKPI::get('DASHGOALS_TRAFFIC_'.$i.'_'.$year);
				$average_goals['conversion'] += ConfigurationKPI::get('DASHGOALS_CONVERSION_'.$i.'_'.$year) / 100;
				$average_goals['avg_cart_value'] += ConfigurationKPI::get('DASHGOALS_AVG_CART_VALUE_'.$i.'_'.$year);
			}
			foreach ($average_goals as &$average_goal)
				$average_goal /= 12;
			$average_goals['sales'] = $average_goals['traffic'] * $average_goals['conversion'] * $average_goals['avg_cart_value'];

			// Now we can calculate the value for every months
			for ($i = '01'; $i <= 12; $i = sprintf('%02d', $i + 1))
			{
				$timestamp = strtotime($year.'-'.$i.'-01');

				$month_goal = ConfigurationKPI::get('DASHGOALS_TRAFFIC_'.$i.'_'.$year);
				$value = (isset($visits[$timestamp]) ? $visits[$timestamp] : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['traffic'], $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['traffic'] = $value;
				$stream_values['real']['goal'] = $month_goal;
				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['traffic'] = $value;
				$stream_values['more']['traffic'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = $goal_diff;
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = $goal_diff;

				if ($value == 0)
				{
					$streams['traffic']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['traffic'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];

				$month_goal = ConfigurationKPI::get('DASHGOALS_CONVERSION_'.$i.'_'.$year);
				$value = 100 * ((isset($visits[$timestamp]) && $visits[$timestamp] && isset($orders[$timestamp]) && $orders[$timestamp]) ? ($orders[$timestamp] / $visits[$timestamp]) : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['conversion'] * 100, $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['conversion'] = round($value, 2);
				$stream_values['real']['goal'] = round($month_goal, 2);
				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['conversion'] = $value;
				$stream_values['more']['conversion'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				if ($value == 0)
				{
					$streams['conversion']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['conversion'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];

				$month_goal = ConfigurationKPI::get('DASHGOALS_AVG_CART_VALUE_'.$i.'_'.$year);
				$value = ((isset($orders[$timestamp]) && $orders[$timestamp] && isset($sales[$timestamp]) && $sales[$timestamp]) ? ($sales[$timestamp] / $orders[$timestamp]) : 0);
				$stream_values = $this->getValuesFromGoals($average_goals['avg_cart_value'], $month_goal, $value, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['avg_cart_value'] = $value;
				$stream_values['real']['goal'] = $month_goal;
				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['avg_cart_value'] = $value;
				$stream_values['more']['avg_cart_value'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = $goal_diff;
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = $goal_diff;

				if ($value == 0)
				{
					$streams['avg_cart_value']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['avg_cart_value'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];

				$month_goal = ConfigurationKPI::get('DASHGOALS_TRAFFIC_'.$i.'_'.$year) * ConfigurationKPI::get('DASHGOALS_CONVERSION_'.$i.'_'.$year) / 100 * ConfigurationKPI::get('DASHGOALS_AVG_CART_VALUE_'.$i.'_'.$year);
				$value = (isset($sales[$timestamp]) && $sales[$timestamp]) ? $sales[$timestamp] : 0;			
				$stream_values = $this->getValuesFromGoals($average_goals['sales'], $month_goal, isset($sales[$timestamp]) ? $sales[$timestamp] : 0, Dashgoals::$month_labels[$i]);
				$goal_diff = $value - $month_goal;
				$stream_values['real']['sales'] = $value;
				$stream_values['real']['goal'] = $month_goal;

				if ($value > 0)
					$stream_values['real']['goal_diff'] = round(($goal_diff * 100) / ($month_goal > 0 ? $month_goal : 1), 2);

				$stream_values['less']['sales'] = $value;
				$stream_values['more']['sales'] = $value;

				if ($value > 0 && $value < $month_goal)
					$stream_values['less']['goal_diff'] = $goal_diff;
				elseif ($value > 0)
					$stream_values['more']['goal_diff'] = $goal_diff;

				if ($value == 0)
				{
					$streams['sales']['less']['zone_text'] = $this->l('Goal set:');
					$stream_values['less']['goal'] = $month_goal;
				}

				foreach ($stream_zones as $stream_zone)
					$streams['sales'][$stream_zone['zone']]['values'][] = $stream_values[$stream_zone['zone']];
			}
		}

		// Merge all the streams before sending
		$all_streams = array();
		foreach ($stream_types as $stream_type)
			foreach ($stream_zones as $stream_zone)
				$all_streams[] = $streams[$stream_type['type']][$stream_zone['zone']];

		return array('chart_type' => 'bar_chart_goals', 'data' => $all_streams);
	}

	protected function getValuesFromGoals($average_goal, $month_goal, $value, $label)
	{
		// Initialize value for each zone
		$stream_values = array(
			'real' => array('x' => $label, 'y' => 0),
			'less' => array('x' => $label, 'y' => 0),
			'more' => array('x' => $label, 'y' => 0)
		);

		// Calculate the percentage of fullfilment of the goal
		$fullfilment = 0;
		if ($value && $month_goal)
			$fullfilment = round($value / $month_goal, 2);

		// Base rate is essential here : it determines the value of the goal compared to the "100%" of the chart legend
		$base_rate = 0;
		if ($average_goal && $month_goal)
			$base_rate = $month_goal / $average_goal;

		// Fullfilment of 1 means that we performed exactly anticipated
		if ($fullfilment == 1)
			$stream_values['real'] = array('x' => $label, 'y' => round($base_rate, 2));
		// Fullfilment lower than 1 means that we UNDER performed
		elseif ($fullfilment < 1)
		{
			$stream_values['real'] = array('x' => $label, 'y' => round($fullfilment * $base_rate, 2));
			$stream_values['less'] = array('x' => $label, 'y' => round($base_rate - ($fullfilment * $base_rate), 2));
		}
		// Fullfilment greater than 1 means that we OVER performed
		elseif ($fullfilment > 1)
		{
			$stream_values['real'] = array('x' => $label, 'y' => round($base_rate, 2));
			$stream_values['more'] = array('x' => $label, 'y' => round(($fullfilment * $base_rate) - $base_rate, 2));
		}

		return $stream_values;
	}
}