<?php
/**
 * @package    Joomla.Component.Builder
 *
 * @created    30th April, 2015
 * @author     Llewellyn van der Merwe <https://dev.vdm.io>
 * @git        Joomla Component Builder <https://git.vdm.dev/joomla/Component-Builder-Pro>
 * @copyright  Copyright (C) 2015 Vast Development Method. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

use Joomla\CMS\Application\CMSApplication;
use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\Registry\Registry;

JLoader::register('ComponentbuilderHelper', JPATH_ADMINISTRATOR . '/components/com_componentbuilder/helpers/componentbuilder.php');

/**
 * Extension - Componentbuilder Headers Compiler plugin.
 *
 * @package   ComponentbuilderHeadersCompiler
 * @since     1.0.7
 */
class PlgExtensionComponentbuilderHeadersCompiler extends CMSPlugin
{
/**
	 * Global switch to see if a file has custom headers.
	 *
	 * @var    boolean
	 * @since  1.0.0
	 */
	protected  $loadHeaders = false;

	/**
	 * The files active with headers
	 *
	 * @var    array
	 * @since  1.0.0
	 */
	protected  $activeFiles = array();

	/**
	 * The compiler placeholders values
	 *
	 * @var    array
	 * @since  1.0.6
	 */
	protected  $placeholders = array();

	/**
	 * The powers to include in project
	 *
	 * @var    array
	 * @since  1.0.6
	 */
	protected  $linkedPowers = array();

	/**
	 * The Targets
	 *
	 * @var    array
	 * @since  1.0.5
	 */
	protected $targets = array(
		'admin_view_headers' =>
			array(
				'add_admin_view_model'       => array(
					'field'   => 'admin_view_model',
					'context' => 'admin.view.model',
					'view'    => 'name_single'
				),
				'add_admin_view'       => array(
					'field'   => 'admin_view',
					'context' => 'admin.view',
					'view'    => 'name_single'
				),
				'add_admin_view_html'       => array(
					'field'   => 'admin_view_html',
					'context' => 'admin.view.html',
					'view'    => 'name_single'
				),
				'add_site_admin_view_html'       => array(
					'field'   => 'site_admin_view_html',
					'context' => 'site.admin.view.html',
					'view'    => 'name_single'
				),
				'add_admin_view_controller'  => array(
					'field'   => 'admin_view_controller',
					'context' => 'admin.view.controller',
					'view'    => 'name_single'
				),
				'add_admin_views_model'      => array(
					'field'   => 'admin_views_model',
					'context' => 'admin.views.model',
					'view'    => 'name_list'
				),
				'add_admin_views'      => array(
					'field'   => 'admin_views',
					'context' => 'admin.views',
					'view'    => 'name_list'
				),
				'add_admin_views_html'      => array(
					'field'   => 'admin_views_html',
					'context' => 'admin.views.html',
					'view'    => 'name_list'
				),
				'add_admin_views_controller' => array(
					'field'   => 'admin_views_controller',
					'context' => 'admin.views.controller',
					'view'    => 'name_list'
				)
			),
		'site_view_headers' =>
			array(
				'add_site_view_model'       => array(
					'field'   => 'site_view_model',
					'context' => 'site.view.model',
					'view'    => 'code'
				),
				'add_site_view'       => array(
					'field'   => 'site_view',
					'context' => 'site.view',
					'view'    => 'code'
				),
				'add_site_view_html'       => array(
					'field'   => 'site_view_html',
					'context' => 'site.view.html',
					'view'    => 'code'
				),
				'add_site_view_controller'  => array(
					'field'   => 'site_view_controller',
					'context' => 'site.view.controller',
					'view'    => 'code'
				),
				'add_site_views_model'      => array(
					'field'   => 'site_views_model',
					'context' => 'site.views.model',
					'view'    => 'code'
				),
				'add_site_views'      => array(
					'field'   => 'site_views',
					'context' => 'site.views',
					'view'    => 'code'
				),
				'add_site_views_html'      => array(
					'field'   => 'site_views_html',
					'context' => 'site.views.html',
					'view'    => 'code'
				),
				'add_site_views_controller' => array(
					'field'   => 'site_views_controller',
					'context' => 'site.views.controller',
					'view'    => 'code'
				)
			),
		'custom_admin_view_headers' =>
			array(
				'add_custom_admin_view_model'       => array(
					'field'   => 'custom_admin_view_model',
					'context' => 'custom.admin.view.model',
					'view'    => 'code'
				),
				'add_custom_admin_view'       => array(
					'field'   => 'custom_admin_view',
					'context' => 'custom.admin.view',
					'view'    => 'code'
				),
				'add_custom_admin_view_html'       => array(
					'field'   => 'custom_admin_view_html',
					'context' => 'custom.admin.view.html',
					'view'    => 'code'
				),
				'add_custom_admin_view_controller'  => array(
					'field'   => 'custom_admin_view_controller',
					'context' => 'custom.admin.view.controller',
					'view'    => 'code'
				),
				'add_custom_admin_views_model'      => array(
					'field'   => 'custom_admin_views_model',
					'context' => 'custom.admin.views.model',
					'view'    => 'code'
				),
				'add_custom_admin_views'      => array(
					'field'   => 'custom_admin_views',
					'context' => 'custom.admin.views',
					'view'    => 'code'
				),
				'add_custom_admin_views_html'      => array(
					'field'   => 'custom_admin_views_html',
					'context' => 'custom.admin.views.html',
					'view'    => 'code'
				),
				'add_custom_admin_views_controller' => array(
					'field'   => 'custom_admin_views_controller',
					'context' => 'custom.admin.views.controller',
					'view'    => 'code'
				)
			),
		'joomla_component_headers' =>
			array(
				'add_admin_component'  => array(
					'field'   => 'admin_component',
					'context' => 'admin.component',
					'view'    => 'admin'
				),
				'add_site_component'  => array(
					'field'   => 'site_component',
					'context' => 'site.component',
					'view'    => 'site'
				),
				'add_admin_helper'  => array(
					'field'   => 'admin_helper',
					'context' => 'admin.helper',
					'view'    => 'admin'
				),
				'add_site_helper'  => array(
					'field'   => 'site_helper',
					'context' => 'site.helper',
					'view'    => 'site'
				)
			)
		);

	/**
	 * Event Triggered in the compiler [on Before Model View Data]
	 *
	 * @return  void
	 *
	 * @since   1.0
	 */
	public function jcb_ce_onBeforeModelViewData(&$context, &$view,
		&$placeholders
	) {
		// add the headers
		$view->params = (isset($view->params)
			&& ComponentbuilderHelper::checkJson($view->params)) ? json_decode(
			$view->params, true
		) : $view->params;
		if (ComponentbuilderHelper::checkArray($view->params)
			&& isset($view->params['admin_view_headers'])
			&& ComponentbuilderHelper::checkArray(
				$view->params['admin_view_headers']
			))
		{
			foreach ($this->targets['admin_view_headers'] as $target => $event)
			{
				if (isset($view->params['admin_view_headers'][$target])
					&& $view->params['admin_view_headers'][$target] == 1)
				{
					// get the header string if set
					$this->getHeaderString($view, $event, 'admin_view_headers');
				}
			}
		}
	}

	/**
	 * Event Triggered in the compiler [on Before Model Custom View Data]
	 *
	 * @return  void
	 *
	 * @since   1.2
	 */
	public function jcb_ce_onBeforeModelCustomViewData(&$context, &$view,
		&$id, &$table
	) {
		// add the headers
		$view->params = (isset($view->params)
			&& ComponentbuilderHelper::checkJson($view->params)) ? json_decode(
			$view->params, true
		) : $view->params;
		// target site views
		if (ComponentbuilderHelper::checkArray($view->params)
			&& isset($view->params['site_view_headers'])
			&& ComponentbuilderHelper::checkArray(
				$view->params['site_view_headers']
			))
		{
			foreach ($this->targets['site_view_headers'] as $target => $event)
			{
				if (isset($view->params['site_view_headers'][$target])
					&& $view->params['site_view_headers'][$target] == 1)
				{
					// get the header string if set
					$this->getHeaderString($view, $event, 'site_view_headers');
				}
			}
		}
		// target custom admin views
		if (ComponentbuilderHelper::checkArray($view->params)
			&& isset($view->params['custom_admin_view_headers'])
			&& ComponentbuilderHelper::checkArray(
				$view->params['custom_admin_view_headers']
			))
		{
			foreach ($this->targets['custom_admin_view_headers'] as $target => $event)
			{
				if (isset($view->params['custom_admin_view_headers'][$target])
					&& $view->params['custom_admin_view_headers'][$target] == 1)
				{
					// get the header string if set
					$this->getHeaderString($view, $event, 'custom_admin_view_headers');
				}
			}
		}
	}

	/**
	 * Event Triggered in the compiler [on Before Model Component Data]
	 *
	 * @return  void
	 *
	 * @since   1.4
	 */
	public function jcb_ce_onBeforeModelComponentData(&$context, &$component)
	{
		// add the privacy
		$component->params = (isset($component->params)
			&& ComponentbuilderHelper::checkJson($component->params)) ? json_decode(
			$component->params, true
		) : $component->params;
		if (ComponentbuilderHelper::checkArray($component->params)
			&& isset($component->params['joomla_component_headers'])
			&& ComponentbuilderHelper::checkArray(
				$component->params['joomla_component_headers']
			))
		{
			foreach ($this->targets['joomla_component_headers'] as $target => $event)
			{
				if (isset($component->params['joomla_component_headers'][$target])
					&& $component->params['joomla_component_headers'][$target] == 1)
				{
					// activate the load of the headers
					$this->loadHeaders = true;
					// load the headers
					$this->activeFiles[$event['view']][$event['context']]
						= $component->params['joomla_component_headers'][$event['field']];
				}
			}
		}
	}

	/**
	 * get the header string
	 *
	 * @return  void
	 *
	 * @since   1.0
	 */
	protected function getHeaderString(&$view, &$get, $key, $view_name = null)
	{
		// we first check if the value is set
		if (isset($view->params[$key][$get['field']]) || isset($view->params[$key]['power_' . $get['field']]))
		{
			// activate the load of the headers
			$this->loadHeaders = true;
			// setup the view key name
			if (!$view_name)
			{
				$view_name = ComponentbuilderHelper::safeString(
					$view->{$get['view']}
				);
			}
			// we start this field if not already
			if (!isset($this->activeFiles[$view_name][$get['context']]))
			{
				$this->activeFiles[$view_name][$get['context']] = '';
			}
			// start little bucket
			$bucket = array();
			// load the headers if text
			if (isset($view->params[$key][$get['field']]) && ComponentbuilderHelper::checkString($view->params[$key][$get['field']]))
			{
				$bucket[] = $view->params[$key][$get['field']];
			}
			// load the headers if power
			if (isset($view->params[$key]['power_' . $get['field']]) && ComponentbuilderHelper::checkArray($view->params[$key]['power_' . $get['field']], true)
				&& ($use = $this->getPowers($view->params[$key]['power_' . $get['field']])) !== false)
			{
				$bucket[] = 'use ' . implode(';' . PHP_EOL . 'use ', $use) . ';';
			}
			// we start this field if not already
			if (ComponentbuilderHelper::checkArray($bucket, true))
			{
				$this->activeFiles[$view_name][$get['context']] .= implode(PHP_EOL, $bucket);
			}
		}
	}

	/**
	 * get the powers header use strings
	 *
	 * @return  string
	 *
	 * @since   1.0.6
	 */
	protected function getPowers($ids)
	{
		// if none are found
		$namspaces = false;
		// add to active powers
		if (($namspaces = ComponentbuilderHelper::getVars('power', $ids, 'id', 'namespace')) !== false)
		{
			foreach ($ids as $id)
			{
				$this->linkedPowers[$id] = $id;
			}
			// convert the dots to namespace
			$namspaces = array_map( function($namespace) {
				return ComponentbuilderHelper::safeNamespace(
					str_replace(
						array_keys($this->placeholders),
						array_values($this->placeholders),
						str_replace('.', '\\', $namespace)
					)
				);
			}, $namspaces );
		}
		return $namspaces;
	}

	/**
	 * Event Triggered in the compiler [on set Class Header]
	 *
	 * @return  void
	 *
	 * @since   1.0
	 */
	public function jcb_ce_setClassHeader(&$context, &$event_context,
		&$view_name,
		&$headers
	) {
		if ($this->loadHeaders && isset($this->activeFiles[$view_name])
			&& isset($this->activeFiles[$view_name][$event_context]))
		{
			// we have default headers we actually need
			foreach ($headers as $n => $header)
			{
				// we check if this header is also set from the user
				if (empty($header) || (isset($this->activeFiles[$view_name][$event_context]) && strpos(
						$this->activeFiles[$view_name][$event_context], $header
					) !== false))
				{
					// since it is set, remove it here
					unset($headers[$n]);
				}
			}
			// now add the custom headers
			// yes they are below the defaults, unless overridden and removed above
			$headers[] = $this->activeFiles[$view_name][$event_context];
		}
	}

	/**
	 * Event Triggered in the compiler [on Before Get Component Data]
	 *
	 * @return  void
	 *
	 * @since   1.0.6
	 */
	public function jcb_ce_onBeforeGetComponentData(&$context, $compiler)
	{
		// get placeholders from the compiler
		$this->placeholders = $compiler->globalPlaceholders;
	}

	/**
	 * Event Triggered in the compiler [on After Get Component Data]
	 *
	 * @return  void
	 *
	 * @since   1.0.6
	 */
	public function jcb_ce_onAfterGetComponentData(&$context, $compiler)
	{
		// add the powers to the component
		if (ComponentbuilderHelper::checkArray($this->linkedPowers, true))
		{
			$compiler->linkedPowers = $this->linkedPowers;
		}
	}
}