<?php
// +----------------------------------------------------------------------+
// | Copyright 2013  Madpixels  (email : visualizer@madpixels.net)        |
// +----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify |
// | it under the terms of the GNU General Public License, version 2, as  |
// | published by the Free Software Foundation.                           |
// |                                                                      |
// | This program is distributed in the hope that it will be useful,      |
// | but WITHOUT ANY WARRANTY; without even the implied warranty of       |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        |
// | GNU General Public License for more details.                         |
// |                                                                      |
// | You should have received a copy of the GNU General Public License    |
// | along with this program; if not, write to the Free Software          |
// | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,               |
// | MA 02110-1301 USA                                                    |
// +----------------------------------------------------------------------+
// | Author: Eugene Manuilov <eugene@manuilov.org>                        |
// +----------------------------------------------------------------------+
/**
 * The module for all admin stuff.
 *
 * @category Visualizer
 * @package Module
 *
 * @since 1.0.0
 */
class Visualizer_Module_Admin extends Visualizer_Module {

	const NAME = __CLASS__;

	/**
	 * Library page suffix.
	 *
	 * @since 1.0.0
	 *
	 * @access private
	 * @var string
	 */
	private $_libraryPage;

	/**
	 * Constructor.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 *
	 * @param Visualizer_Plugin $plugin The instance of the plugin.
	 */
	public function __construct( Visualizer_Plugin $plugin ) {
		parent::__construct( $plugin );
		$this->_addAction( 'load-post.php', 'enqueueMediaScripts' );
		$this->_addAction( 'load-post-new.php', 'enqueueMediaScripts' );
		$this->_addAction( 'admin_footer', 'renderTempaltes' );
		$this->_addAction( 'admin_enqueue_scripts', 'enqueueLibraryScripts', null, 8 );
		$this->_addAction( 'admin_menu', 'registerAdminMenu' );
		$this->_addFilter( 'media_view_strings', 'setupMediaViewStrings' );
		$this->_addFilter( 'plugin_action_links', 'getPluginActionLinks', 10, 2 );
		$this->_addFilter( 'plugin_row_meta', 'getPluginMetaLinks', 10, 2 );
	}


	/**
	 * Enqueues media scripts and styles.
	 *
	 * @since 1.0.0
	 * @uses wp_enqueue_style To enqueue style file.
	 * @uses wp_enqueue_script To enqueue script file.
	 *
	 * @access public
	 */
	public function enqueueMediaScripts() {
		global $typenow;
		if ( post_type_supports( $typenow, 'editor' ) ) {
			wp_enqueue_style( 'visualizer-media', VISUALIZER_ABSURL . 'css/media.css', array( 'media-views' ), Visualizer_Plugin::VERSION );
			wp_enqueue_script( 'visualizer-google-jsapi-new', '//www.gstatic.com/charts/loader.js', array( 'media-editor' ), null, true );
			wp_enqueue_script( 'visualizer-google-jsapi-old', '//www.google.com/jsapi', array( 'visualizer-google-jsapi-new' ), null, true );
			wp_enqueue_script( 'visualizer-media-model', VISUALIZER_ABSURL . 'js/media/model.js', array( 'visualizer-google-jsapi-old' ), Visualizer_Plugin::VERSION, true );
			wp_enqueue_script( 'visualizer-media-collection', VISUALIZER_ABSURL . 'js/media/collection.js', array( 'visualizer-media-model' ), Visualizer_Plugin::VERSION, true );
			wp_enqueue_script( 'visualizer-media-controller', VISUALIZER_ABSURL . 'js/media/controller.js', array( 'visualizer-media-collection' ), Visualizer_Plugin::VERSION, true );
			wp_enqueue_script( 'visualizer-media-view', VISUALIZER_ABSURL . 'js/media/view.js', array( 'visualizer-media-controller' ), Visualizer_Plugin::VERSION, true );
			wp_enqueue_script( 'visualizer-media-toolbar', VISUALIZER_ABSURL . 'js/media/toolbar.js', array( 'visualizer-media-view' ), Visualizer_Plugin::VERSION, true );
			wp_enqueue_script( 'visualizer-media', VISUALIZER_ABSURL . 'js/media.js', array( 'visualizer-media-toolbar' ), Visualizer_Plugin::VERSION, true );
		}
	}

	/**
	 * Extends media view strings with visualizer strings.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 *
	 * @param array $strings The array of media view strings.
	 *
	 * @return array The extended array of media view strings.
	 */
	public function setupMediaViewStrings( $strings ) {
		$strings['visualizer'] = array(
			'actions'    => array(
				'get_charts'   => Visualizer_Plugin::ACTION_GET_CHARTS,
				'delete_chart' => Visualizer_Plugin::ACTION_DELETE_CHART,
			),
			'controller' => array(
				'title' => esc_html__( 'Visualizations', 'visualizer' ),
			),
			'routers'    => array(
				'library' => esc_html__( 'From Library', 'visualizer' ),
				'create'  => esc_html__( 'Create New', 'visualizer' ),
			),
			'library'    => array(
				'filters' => self::_getChartTypesLocalized( true, true ),
				'types'   => array_keys( self::_getChartTypesLocalized( true, true ) ),
			),
			'nonce'      => wp_create_nonce(),
			'buildurl'   => add_query_arg( 'action', Visualizer_Plugin::ACTION_CREATE_CHART, admin_url( 'admin-ajax.php' ) ),
		);

		return $strings;
	}

	/**
	 * Returns associated array of chart types and localized names.
	 *
	 * @since 1.0.0
	 *
	 * @static
	 * @access private
	 * @return array The associated array of chart types with localized names.
	 */
	public static function _getChartTypesLocalized( $enabledOnly = false, $get2Darray = false ) {
		$types = array(
			'pie'         => array(
				'name'    => esc_html__( 'Pie', 'visualizer' ),
				'enabled' => true,
			),
			'line'        => array(
				'name'    => esc_html__( 'Line', 'visualizer' ),
				'enabled' => true,
			),
			'area'        => array(
				'name'    => esc_html__( 'Area', 'visualizer' ),
				'enabled' => true,
			),
			'geo'         => array(
				'name'    => esc_html__( 'Geo', 'visualizer' ),
				'enabled' => true,
			),
			'bar'         => array(
				'name'    => esc_html__( 'Bar', 'visualizer' ),
				'enabled' => true,
			),
			'column'      => array(
				'name'    => esc_html__( 'Column', 'visualizer' ),
				'enabled' => true,
			),
			'gauge'       => array(
				'name'    => esc_html__( 'Gauge', 'visualizer' ),
				'enabled' => true,
			),
			'scatter'     => array(
				'name'    => esc_html__( 'Scatter', 'visualizer' ),
				'enabled' => true,
			),
			'candlestick' => array(
				'name'    => esc_html__( 'Candlestick', 'visualizer' ),
				'enabled' => true,
			),
			// pro types
			'table'       => array(
				'name'    => esc_html__( 'Table', 'visualizer' ),
				'enabled' => false,
			),
			'timeline'    => array(
				'name'    => esc_html__( 'Timeline', 'visualizer' ),
				'enabled' => false,
			),
			'combo'       => array(
				'name'    => esc_html__( 'Combo', 'visualizer' ),
				'enabled' => false,
			),
		);
		$types = apply_filters( 'visualizer_pro_chart_types', $types );
		if ( $enabledOnly ) {
			$filtered = array();
			foreach ( $types as $type => $array ) {
				if ( ! is_array( $array ) ) {
					// support for old pro
					$array  = array( 'enabled' => true, 'name' => $array );
				}
				if ( ! $array['enabled'] ) {
					continue;
				}
				$filtered[ $type ] = $array;
			}
			$types = $filtered;
		}
		if ( $get2Darray ) {
			$doubleD = array();
			foreach ( $types as $type => $array ) {
				if ( ! is_array( $array ) ) {
					// support for old pro
					$array  = array( 'enabled' => true, 'name' => $array );
				}
				$doubleD[ $type ] = $array['name'];
			}
			$types = $doubleD;
		}

		return $types;
	}

	/**
	 * Renders templates to use in media popup.
	 *
	 * @since 1.0.0
	 * @global string $pagenow The name of the current page.
	 *
	 * @access public
	 */
	public function renderTempaltes() {
		global $pagenow;
		if ( 'post.php' != $pagenow && 'post-new.php' != $pagenow ) {
			return;
		}
		$render = new Visualizer_Render_Templates();
		$render->render();
	}

	/**
	 * Enqueues library scripts and styles.
	 *
	 * @since 1.0.0
	 * @uses wp_enqueue_style() To enqueue library stylesheet.
	 * @uses wp_enqueue_script() To enqueue javascript file.
	 * @uses wp_enqueue_media() To enqueue media stuff.
	 *
	 * @access public
	 *
	 * @param string $suffix The current page suffix.
	 */
	public function enqueueLibraryScripts( $suffix ) {
		if ( $suffix == $this->_libraryPage ) {
			wp_enqueue_style( 'visualizer-library', VISUALIZER_ABSURL . 'css/library.css', array(), Visualizer_Plugin::VERSION );
			$this->_addFilter( 'media_upload_tabs', 'setupVisualizerTab' );
			wp_enqueue_media();
			wp_enqueue_script(
				'visualizer-library', VISUALIZER_ABSURL . 'js/library.js', array(
					'jquery',
					'media-views',
				), Visualizer_Plugin::VERSION, true
			);
			wp_enqueue_script( 'google-jsapi-new', '//www.gstatic.com/charts/loader.js', array(), null, true );
			wp_enqueue_script( 'google-jsapi-old', '//www.google.com/jsapi', array( 'google-jsapi-new' ), null, true );
			wp_enqueue_script(
				'visualizer-render', VISUALIZER_ABSURL . 'js/render.js', array(
					'google-jsapi-old',
					'visualizer-library',
				), Visualizer_Plugin::VERSION, true
			);
		}
	}

	/**
	 * Adds visualizer tab for media upload tabs array.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 *
	 * @param array $tabs The array of media upload tabs.
	 *
	 * @return array Extended array of media upload tabs.
	 */
	public function setupVisualizerTab( $tabs ) {
		$tabs['visualizer'] = 'Visualizer';

		return $tabs;
	}

	/**
	 * Registers admin menu for visualizer library.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 */
	public function registerAdminMenu() {
		$title              = esc_html__( 'Visualizer Library', 'visualizer' );
		$callback           = array( $this, 'renderLibraryPage' );
		$this->_libraryPage = add_submenu_page( 'upload.php', $title, $title, 'edit_posts', Visualizer_Plugin::NAME, $callback );
	}

	/**
	 * Renders visualizer library page.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 */
	public function renderLibraryPage() {
		// get current page
		$page = filter_input(
			INPUT_GET, 'vpage', FILTER_VALIDATE_INT, array(
				'options' => array(
					'min_range' => 1,
					'default'   => 1,
				),
			)
		);
		// the initial query arguments to fetch charts
		$query_args = array(
			'post_type'      => Visualizer_Plugin::CPT_VISUALIZER,
			'posts_per_page' => 6,
			'paged'          => $page,
		);
		// add chart type filter to the query arguments
		$filter = filter_input( INPUT_GET, 'type' );
		if ( $filter && in_array( $filter, Visualizer_Plugin::getChartTypes() ) ) {
			$query_args['meta_query'] = array(
				array(
					'key'     => Visualizer_Plugin::CF_CHART_TYPE,
					'value'   => $filter,
					'compare' => '=',
				),
			);
		} else {
			$filter = 'all';
		}
		// Added by Ash/Upwork
		$filterByMeta = filter_input( INPUT_GET, 's', FILTER_SANITIZE_STRING );
		if ( $filterByMeta ) {
			$query                    = array(
				'key'     => Visualizer_Plugin::CF_SETTINGS,
				'value'   => $filterByMeta,
				'compare' => 'LIKE',
			);
			$meta                     = isset( $query_args['meta_query'] ) ? $query_args['meta_query'] : array();
			$meta[]                   = $query;
			$query_args['meta_query'] = $meta;
		}
		// Added by Ash/Upwork
		// fetch charts
		$charts = array();
		$query  = new WP_Query( $query_args );
		while ( $query->have_posts() ) {
			$chart = $query->next_post();
			// fetch and update settings
			$settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true );
			unset( $settings['height'], $settings['width'] );
			$type   = get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true );
			$series = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SERIES, get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true ), $chart->ID, $type );
			$data   = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_DATA, unserialize( html_entity_decode( $chart->post_content ) ), $chart->ID, $type );
			// add chart to the array
			$charts[ 'visualizer-' . $chart->ID ] = array(
				'id'       => $chart->ID,
				'type'     => $type,
				'series'   => $series,
				'settings' => $settings,
				'data'     => $data,
			);
		}
		// enqueue charts array
		$ajaxurl = admin_url( 'admin-ajax.php' );
		wp_localize_script(
			'visualizer-library', 'visualizer', array(
				'charts' => $charts,
				'urls'   => array(
					'base'   => add_query_arg( 'vpage', false ),
					'create' => add_query_arg(
						array(
							'action'  => Visualizer_Plugin::ACTION_CREATE_CHART,
							'library' => 'yes',
						), $ajaxurl
					),
					'edit'   => add_query_arg(
						array(
							'action'  => Visualizer_Plugin::ACTION_EDIT_CHART,
							'library' => 'yes',
						), $ajaxurl
					),
				),
			)
		);
		// render library page
		$render             = new Visualizer_Render_Library();
		$render->charts     = $charts;
		$render->type       = $filter;
		$render->types      = self::_getChartTypesLocalized();
		$render->pagination = paginate_links(
			array(
				'base'    => add_query_arg( 'vpage', '%#%' ),
				'format'  => '',
				'current' => $page,
				'total'   => $query->max_num_pages,
				'type'    => 'array',
			)
		);
		$render->render();
	}

	/**
	 * Updates the plugin's action links, which will be rendered at the plugins table.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 *
	 * @param array  $links The array of original action links.
	 * @param string $file The plugin basename.
	 *
	 * @return array Updated array of action links.
	 */
	public function getPluginActionLinks( $links, $file ) {
		if ( $file == plugin_basename( VISUALIZER_BASEFILE ) ) {
			array_unshift(
				$links,
				sprintf(
					'<a href="%s">%s</a>',
					admin_url( 'upload.php?page=' . Visualizer_Plugin::NAME ),
					esc_html__( 'Library', 'visualizer' )
				)
			);
		}

		return $links;
	}

	/**
	 * Updates the plugin's meta links, which will be rendered at the plugins table.
	 *
	 * @since 1.0.0
	 *
	 * @access public
	 *
	 * @param array  $plugin_meta The array of a plugin meta links.
	 * @param string $plugin_file The plugin's basename.
	 *
	 * @return array Updated array of plugin meta links.
	 */
	public function getPluginMetaLinks( $plugin_meta, $plugin_file ) {
		if ( $plugin_file == plugin_basename( VISUALIZER_BASEFILE ) ) {
			// knowledge base link
			$plugin_meta[] = sprintf(
				'<a href="https://github.com/codeinwp/visualizer/wiki" target="_blank">%s</a>',
				esc_html__( 'Knowledge Base', 'visualizer' )
			);
			// flattr link
			$plugin_meta[] = sprintf(
				'<a style="color:red" href="https://themeisle.com/plugins/visualizer-charts-and-graphs-pro-addon/" target="_blank">%s</a>',
				esc_html__( 'Pro Addon', 'visualizer' )
			);
		}

		return $plugin_meta;
	}

}