<?php
/**
 * Main Tribe Common class.
 */

// Don't load directly
if ( ! defined( 'ABSPATH' ) ) {
	die( '-1' );
}

if ( class_exists( 'Tribe__Main' ) ) {
	return;
}

class Tribe__Main {
	const EVENTSERROROPT      = '_tribe_events_errors';
	const OPTIONNAME          = 'tribe_events_calendar_options';
	const OPTIONNAMENETWORK   = 'tribe_events_calendar_network_options';

	const VERSION           = '3.12a1';
	const INFO_API_URL      = 'http://wpapi.org/api/plugin/the-events-calendar.php';
	const WP_PLUGIN_URL     = 'http://wordpress.org/extend/plugins/the-events-calendar/';

	protected $plugin_context;
	protected $plugin_context_class;

	public static $tribe_url = 'http://tri.be/';
	public static $tec_url = 'http://theeventscalendar.com/';

	public $plugin_dir;
	public $plugin_path;
	public $plugin_url;

	/**
	 * constructor
	 */
	public function __construct( $context = null ) {
		if ( is_object( $context ) ) {
			$this->plugin_context = $context;
			$this->plugin_context_class = get_class( $context );
		}

		$this->plugin_path = trailingslashit( dirname( dirname( dirname( __FILE__ ) ) ) );
		$this->plugin_dir  = trailingslashit( basename( $this->plugin_path ) );
		$this->plugin_url  = plugins_url( $this->plugin_dir );

		$this->init_libraries();
	}

	/**
	 * Get's the instantiated context of this class. I.e. the object that instantiated this one.
	 */
	public function context() {
		return $this->plugin_context;
	}

	/**
	 * Get's the class name of the instantiated plugin context of this class. I.e. the class name of the object that instantiated this one.
	 */
	public function context_class() {
		return $this->plugin_context_class;
	}

	/**
	 * initializes all required libraries
	 */
	public function init_libraries() {
		Tribe__Debug::instance();
		Tribe__Settings_Manager::instance();

		require_once $this->plugin_path . 'common/functions/template-tags/general.php';
		require_once $this->plugin_path . 'common/functions/template-tags/date.php';
		require_once $this->plugin_path . 'common/functions/template-tags/day.php';
	}

	/**
	 * Insert an array after a specified key within another array.
	 *
	 * @param $key
	 * @param $source_array
	 * @param $insert_array
	 *
	 * @return array
	 *
	 */
	public static function array_insert_after_key( $key, $source_array, $insert_array ) {
		if ( array_key_exists( $key, $source_array ) ) {
			$position     = array_search( $key, array_keys( $source_array ) ) + 1;
			$source_array = array_slice( $source_array, 0, $position, true ) + $insert_array + array_slice( $source_array, $position, null, true );
		} else {
			// If no key is found, then add it to the end of the array.
			$source_array += $insert_array;
		}

		return $source_array;
	}

	/**
	 * Insert an array immediately before a specified key within another array.
	 *
	 * @param $key
	 * @param $source_array
	 * @param $insert_array
	 *
	 * @return array
	 */
	public static function array_insert_before_key( $key, $source_array, $insert_array ) {
		if ( array_key_exists( $key, $source_array ) ) {
			$position     = array_search( $key, array_keys( $source_array ) );
			$source_array = array_slice( $source_array, 0, $position, true ) + $insert_array + array_slice( $source_array, $position, null, true );
		} else {
			// If no key is found, then add it to the end of the array.
			$source_array += $insert_array;
		}

		return $source_array;
	}

	/**
	 * Static Singleton Factory Method
	 *
	 * @return Tribe__Main
	 */
	public static function instance( $object ) {
		static $instance = array();

		$object_class = '';

		if ( is_object( $object ) ) {
			$object_class = get_class( $object );
		} elseif ( is_string( $object ) ) {
			$object_class = $object;
			$object = new $object_class;
		}

		if ( ! isset( $instance[ $object_class ] ) ) {
			$class_name = __CLASS__;
			$instance = new $class_name;
		}

		return $instance[ $object_class ];
	}
}