<?php
/**
 * ExactMetrics Installation and Automatic Upgrades.
 *
 * This file handles setting up new
 * ExactMetrics installs as well as performing
 * behind the scene upgrades between
 * ExactMetrics versions.
 *
 * @package ExactMetrics
 * @subpackage Install/Upgrade
 * @since 1.0.0
 */

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

/**
 * ExactMetrics Install.
 *
 * This class handles a new MI install
 * as well as automatic (non-user initiated)
 * upgrade routines.
 *
 * @since 1.0.0
 * @access public
 */
class ExactMetrics_Install {

	/**
	 * MI Settings.
	 *
	 * @since 6.0.0
	 * @access public
	 * @var array $new_settings When the init() function starts, initially
	 *      					contains the original settings. At the end
	 *      				 	of init() contains the settings to save.
	 */
	public $new_settings = array();

	/**
	 * Install/Upgrade routine.
	 *
	 * This function is what is called to actually install MI data on new installs and to do
	 * behind the scenes upgrades on MI upgrades. If this function contains a bug, the results
	 * can be catastrophic. This function gets the highest priority in all of MI for unit tests.
	 *
	 * @since 6.0.0
	 * @access public
	 *
	 * @return void
	 */
	public function init() {

		// Get a copy of the current MI settings.
		$this->new_settings = get_option( exactmetrics_get_option_name() );

		$version = get_option( 'exactmetrics_current_version', false );
		$cachec  = false; // have we forced an object cache to be cleared already (so we don't clear it unnecessarily)

		if ( ! $version ) {

			$this->new_install();

			// set db version (Do not increment! See below large comment)
			update_option( 'exactmetrics_db_version', '1.0.0' );

		} else { // if existing install

			if ( version_compare( $version, '6.1.0', '<' ) ) {
				$this->v610_upgrades();
			}

			if ( version_compare( $version, '6.1.1', '<' ) ) {
				$this->v611_upgrades();
			}

			if ( version_compare( $version, '6.2.0', '<' ) ) {
				$this->v620_upgrades();
			}

			// Do not use. See exactmetrics_after_install_routine comment below.
			do_action( 'exactmetrics_after_existing_upgrade_routine', $version );
			$version = get_option( 'exactmetrics_current_version', $version );
			update_option( 'exactmetrics_version_upgraded_from', $version );
		}

		// This hook is used primarily by the Pro version to run some Pro
		// specific install stuff. Please do not use this hook. It is not
		// considered a public hook by MI's dev team and can/will be removed,
		// relocated, and/or altered without warning at any time. You've been warned.
		// As this hook is not for public use, we've intentionally not docbloc'd this
		// hook to avoid developers seeing it future public dev docs.
		do_action( 'exactmetrics_after_install_routine', $version );

		// This is the version of MI installed
		update_option( 'exactmetrics_current_version', EXACTMETRICS_VERSION );

		// This is where we save MI settings
		update_option( exactmetrics_get_option_name(), $this->new_settings );

		// There's no code for this function below this. Just an explanation
		// of the MI core options.

		/**
		 * Explanation of ExactMetrics core options
		 *
		 * By now your head is probably spinning trying to figure
		 * out what all of these version options are for. Note, I've abbreviated
		 * "exactmetrics" to "mi" in the options names to make this table easier
		 * to read.
		 *
		 * Here's a basic rundown:
		 *
		 * mi_current_version:  This starts with the actual version MI was
		 * 						installed on. We use this version to
		 * 						determine whether or not a site needs
		 * 						to run one of the behind the scenes
		 * 						MI upgrade routines. This version is updated
		 * 						every time a minor or major background upgrade
		 * 						routine is run. Generally lags behind the
		 * 						EXACTMETRICS_VERSION constant by at most a couple minor
		 * 						versions. Never lags behind by 1 major version
		 * 						or more generally.
		 *
		 * mi_db_version: 		This is different from mi_current_version.
		 * 						Unlike the former, this is used to determine
		 * 						if a site needs to run a *user* initiated
		 * 						upgrade routine (incremented in MI_Upgrade class). This
		 * 						value is only update when a user initiated
		 * 						upgrade routine is done. Because we do very
		 * 						few user initiated upgrades compared to
		 * 						automatic ones, this version can lag behind by
		 * 						2 or even 3 major versions. Generally contains
		 * 						the current major version.
		 *
		 * mi_settings:		    Returned by exactmetrics_get_option_name(), this
		 * 						is actually "exactmetrics_settings" for both pro
		 * 						and lite version. However we use a helper function to
		 * 						retrieve the option name in case we ever decide down the
		 * 						road to maintain seperate options for the Lite and Pro versions.
		 * 					 	If you need to access MI's settings directly, (as opposed to our
		 * 					 	exactmetrics_get_option helper which uses the option name helper
		 * 					 	automatically), you should use this function to get the
		 * 					 	name of the option to retrieve.
		 *
		 * Therefore you should never increment exactmetrics_db_version in this file and always increment exactmetrics_current_version.
		 */
	}


	/**
	 * New ExactMetrics Install routine.
	 *
	 * This function installs all of the default
	 * things on new MI installs. Flight 5476 with
	 * non-stop service to a whole world of
	 * possibilities is now boarding.
	 *
	 * @since 6.0.0
	 * @access public
	 *
	 * @return void
	 */
	public function new_install() {

		// Check if ExactMetrics Legacy settings exist and convert those as defaults.
		$em_legacy_options = get_option( 'gadwp_options', false );
		if ( $em_legacy_options ) {
			$this->new_settings = $this->get_settings_from_gadwp();
		} else {
			// Add default settings values.
			$this->new_settings = $this->get_exactmetrics_default_values();
		}

		$this->maybe_import_thirstyaffiliates_options();

		$data = array(
			'installed_version' => EXACTMETRICS_VERSION,
			'installed_date'    => time(),
			'installed_pro'     => exactmetrics_is_pro_version(),
		);

		update_option( 'exactmetrics_over_time', $data );

		// Let addons + MI Pro/Lite hook in here. @todo: doc as nonpublic
		do_action( 'exactmetrics_after_new_install_routine', EXACTMETRICS_VERSION );
	}

	/**
	 * Convert existing settings from ExactMetrics legacy version.
	 *
	 * @return array
	 */
	public function get_settings_from_gadwp() {
		$em_legacy_options = get_option( 'gadwp_options', '' );
		$em_legacy_options = json_decode( $em_legacy_options, true );
		$settings          = $this->get_exactmetrics_default_values();

		if ( ! function_exists( 'is_plugin_active_for_network' ) ) {
			require_once ABSPATH . '/wp-admin/includes/plugin.php';
		}
		// If set to use network wide auth, update the manual UA for all sites.
		$plugin = plugin_basename( EXACTMETRICS_PLUGIN_FILE );
		if ( is_multisite() && is_plugin_active_for_network( $plugin ) ) {
			$network_routine_ran = get_site_option( 'gadwp_network_import', false );
			if ( false === $network_routine_ran ) {
				$em_legacy_network_options = get_site_option( 'gadwp_network_options', '' );
				$em_legacy_network_options = json_decode( $em_legacy_network_options, true );

				if ( ! empty( $em_legacy_network_options['network_mode'] ) && $em_legacy_network_options['network_mode'] && ! empty( $em_legacy_network_options['network_tableid'] ) && is_array( $em_legacy_network_options['network_tableid'] ) ) {
					foreach ( $em_legacy_network_options['network_tableid'] as $site_id => $network_profile ) {
						switch_to_blog( $site_id );

						$profile_data = array();
						foreach ( $em_legacy_network_options['ga_profiles_list'] as $profile ) {
							if ( ! empty( $profile[1] ) && $network_profile === $profile[1] ) {
								$profile_data = $profile;
								break;
							}
						}
						if ( ! empty( $profile_data ) && is_array( $profile_data ) && ! empty( $profile_data[2] ) ) {
							ExactMetrics()->auth->set_manual_ua( $profile_data[2] );
						}

						restore_current_blog();
					}
				}

				update_site_option( 'gadwp_network_import', EXACTMETRICS_VERSION );
			}
		}
		// Save the manual UA to make sure tracking keeps working.
		if ( ! empty( $em_legacy_options['tableid_jail'] ) && is_array( $em_legacy_options['ga_profiles_list'] ) && ! empty( $em_legacy_options['ga_profiles_list'] ) ) {
			$profile_data = array();
			foreach ( $em_legacy_options['ga_profiles_list'] as $profile ) {
				if ( ! empty( $profile[1] ) && $em_legacy_options['tableid_jail'] === $profile[1] ) {
					$profile_data = $profile;
					break;
				}
			}
			if ( ! empty( $profile_data ) && is_array( $profile_data ) && ! empty( $profile_data[2] ) ) {
				ExactMetrics()->auth->set_manual_ua( $profile_data[2] );
			}
		}

		// Process download tracking options.
		if ( ! empty( $em_legacy_options['ga_event_downloads'] ) ) {
			$downloads                       = str_replace( '*', '', $em_legacy_options['ga_event_downloads'] );
			$downloads                       = str_replace( '|', ',', $downloads );
			$settings['extensions_of_files'] = $downloads;
		}

		// Process affiliate tracking settings.
		if ( ! empty( $em_legacy_options['ga_aff_tracking'] ) && 0 !== $em_legacy_options['ga_aff_tracking'] && ! empty( $em_legacy_options['ga_event_affiliates'] ) ) {
			$settings['affiliate_links'][] = array(
				'path'  => $em_legacy_options['ga_event_affiliates'],
				'label' => 'Affiliate',
			);
		}

		// Process Hash Tracking.
		if ( ! empty( $em_legacy_options['ga_hash_tracking'] ) && 0 !== $em_legacy_options['ga_hash_tracking'] ) {
			$settings['hash_tracking'] = 1;
		}

		// Sample rate for Performance addon.
		if ( ! empty( $em_legacy_options['ga_speed_samplerate'] ) ) {
			$settings['speedsamplerate'] = $em_legacy_options['ga_speed_samplerate'];
		}

		// Speed Sample rate for Performance addon.
		if ( ! empty( $em_legacy_options['ga_user_samplerate'] ) ) {
			$settings['samplerate'] = $em_legacy_options['ga_user_samplerate'];
		}

		// Process anonymize ip.
		if ( ! empty( $em_legacy_options['ga_anonymize_ip'] ) ) {
			$settings['anonymize_ips'] = $em_legacy_options['ga_anonymize_ip'] ? 1 : 0;
		}

		// Process Enhanced Link Attribution.
		$settings['link_attribution'] = ! empty( $em_legacy_options['ga_enhanced_links'] ) ? true : false;

		// Process AM notices option.
		if ( ! empty( $em_legacy_options['hide_am_notices'] ) ) {
			$settings['hide_am_notices'] = $em_legacy_options['hide_am_notices'] ? 1 : 0;
		}

		// Process Automatic updates.
		if ( ! empty( $em_legacy_options['automatic_updates_minorversion'] ) ) {
			$settings['automatic_updates'] = $em_legacy_options['automatic_updates_minorversion'] ? 'minor' : 'none';
		}

		// Process Usage Tracking.
		if ( ! empty( $em_legacy_options['usage_tracking'] ) && 1 === $em_legacy_options['usage_tracking'] ) {
			$settings['anonymous_data'] = 1;
		}

		// Process Cross Domain Tracking.
		if ( ! empty( $em_legacy_options['ga_crossdomain_list'] ) ) {
			$cross_domains             = explode( ',', $em_legacy_options['ga_crossdomain_list'] );
			$settings['cross_domains'] = array();
			foreach ( $cross_domains as $cross_domain ) {
				$settings['cross_domains'][] = array(
					'domain' => $cross_domain,
				);
			}
		}

		// Process not tracked roles.
		if ( ! empty( $em_legacy_options['track_exclude'] ) && is_array( $em_legacy_options['track_exclude'] ) ) {
			foreach ( $em_legacy_options['track_exclude'] as $role ) {
				if ( ! in_array( $role, $settings['ignore_users'], true ) ) {
					$settings['ignore_users'][] = $role;
				}
			}
		}

		// Process roles that are allowed to view dashboard.
		if ( ! empty( $em_legacy_options['access_back'] ) && is_array( $em_legacy_options['access_back'] ) ) {
			foreach ( $em_legacy_options['access_back'] as $role ) {
				if ( ! in_array( $role, $settings['view_reports'], true ) ) {
					$settings['view_reports'][] = $role;
				}
			}
		}

		// Convert custom dimensions.
		$settings['custom_dimensions'] = array();

		// Author custom dimension.
		if ( ! empty( $em_legacy_options['ga_author_dimindex'] ) && 0 !== $em_legacy_options['ga_author_dimindex'] ) {
			$settings['custom_dimensions'][] = array(
				'id'   => intval( $em_legacy_options['ga_author_dimindex'] ),
				'type' => 'author',
			);
		}

		// Category custom dimension.
		if ( ! empty( $em_legacy_options['ga_category_dimindex'] ) && 0 !== $em_legacy_options['ga_category_dimindex'] ) {
			$settings['custom_dimensions'][] = array(
				'id'   => intval( $em_legacy_options['ga_category_dimindex'] ),
				'type' => 'category',
			);
		}

		// Tags custom dimension.
		if ( ! empty( $em_legacy_options['ga_tag_dimindex'] ) && 0 !== $em_legacy_options['ga_tag_dimindex'] ) {
			$settings['custom_dimensions'][] = array(
				'id'   => intval( $em_legacy_options['ga_tag_dimindex'] ),
				'type' => 'tags',
			);
		}

		// Convert "User Type" to "Logged in" custom dimension.
		if ( ! empty( $em_legacy_options['ga_user_dimindex'] ) && 0 !== $em_legacy_options['ga_user_dimindex'] ) {
			$settings['custom_dimensions'][] = array(
				'id'   => intval( $em_legacy_options['ga_tag_dimindex'] ),
				'type' => 'logged_in',
			);
		}

		// Transfer Google Optimize
		if ( ! empty( $em_legacy_options['optimize_tracking'] ) && 1 === $em_legacy_options['optimize_tracking'] ) {
			if ( ! empty( $em_legacy_options['optimize_containerid'] ) ) {
				$settings['goptimize_container'] = $em_legacy_options['optimize_containerid'];
				// Maybe also page hide
				if ( ! empty( $em_legacy_options['optimize_pagehiding'] ) ) {
					$settings['goptimize_pagehide'] = true;
				}
			}
		}

		// Transfer enhanced eCommerce
		if ( ! empty( $em_legacy_options['ecommerce_mode'] ) ) {
			if ( 'disabled' !== $em_legacy_options['ecommerce_mode'] ) {
				$settings['gadwp_ecommerce'] = true;
			}
			if ( 'enhanced' === $em_legacy_options['ecommerce_mode'] ) {
				$settings['enhanced_ecommerce'] = true;
			}
		}

		// Transfer Demographics
		$settings['demographics'] = ! empty( $em_legacy_options['ga_dash_remarketing'] ) ? 1 : 0;

		// Enable compat mode
		$settings['gatracker_compatibility_mode'] = true;


		$settings['gadwp_migrated'] = time();

		// Hide the dashboard widget reports for migrating users.
		if ( ! exactmetrics_is_pro_version() ) {
			$dashboard_settings = array(
				'reports' => array(
					'overview' => array(
						'toppages'    => false,
						'newvsreturn' => false,
						'devices'     => false,
					),
				),
			);
			update_user_meta( get_current_user_id(), 'exactmetrics_user_preferences', $dashboard_settings );
		}

		return $settings;
	}

	public function get_exactmetrics_default_values() {
		$admin_email                                     = get_option( 'admin_email' );
		$admin_email_array                               = array(
			array(
				'email' => $admin_email,
			),
		);

		return array(
			'enable_affiliate_links'    => true,
			'affiliate_links'           => array(
				array(
					'path'  => '/go/',
					'label' => 'affiliate',
				),
				array(
					'path'  => '/recommend/',
					'label' => 'affiliate',
				)
			),
			'demographics'              => 1,
			'ignore_users'              => array( 'administrator', 'editor' ),
			'dashboards_disabled'       => 0,
			'anonymize_ips'             => 0,
			'extensions_of_files'       => 'doc,pdf,ppt,zip,xls,docx,pptx,xlsx',
			'subdomain_tracking'        => '',
			'link_attribution'          => true,
			'tag_links_in_rss'          => true,
			'allow_anchor'              => 0,
			'add_allow_linker'          => 0,
			'custom_code'               => '',
			'save_settings'             => array( 'administrator' ),
			'view_reports'              => array( 'administrator', 'editor' ),
			'events_mode'               => 'js',
			'tracking_mode'             => 'analytics',
			'email_summaries'           => 'on',
			'summaries_html_template'   => 'yes',
			'summaries_email_addresses' => $admin_email_array,
			'automatic_updates'         => 'none',
		);
	}

	/**
	 * Check if ThirstyAffiliates plugin is installed and use the link prefix value in the affiliate settings.
	 *
	 * @return void
	 */
	public function maybe_import_thirstyaffiliates_options() {

		// Check if ThirstyAffiliates is installed.
		if ( ! function_exists( 'ThirstyAffiliates' ) ) {
			return;
		}

		$link_prefix = get_option( 'ta_link_prefix', 'recommends' );

		if ( $link_prefix === 'custom' ) {
			$link_prefix = get_option( 'ta_link_prefix_custom', 'recommends' );
		}

		if ( ! empty( $link_prefix ) ) {

			// Check if prefix exists.
			$prefix_set = false;
			foreach ( $this->new_settings['affiliate_links'] as $affiliate_link ) {
				if ( $link_prefix === trim( $affiliate_link['path'], '/' ) ) {
					$prefix_set = true;
					break;
				}
			}

			if ( ! $prefix_set ) {
				$this->new_settings['affiliate_links'][] = array(
					'path'  => '/' . $link_prefix . '/',
					'label' => 'affiliate',
				);
			}
		}
	}

	/**
	 * Upgrade routine for version 6.1.0
	 */
	public function v610_upgrades() {

		if ( empty( $this->new_settings['email_summaries'] ) ) {
			$admin_email                                     = get_option( 'admin_email' );
			$admin_email_array                               = array(
				array(
					'email' => $admin_email,
				),
			);
			$this->new_settings['email_summaries']           = 'on';
			$this->new_settings['summaries_html_template']   = 'yes';
			$this->new_settings['summaries_email_addresses'] = $admin_email_array; // Not using wp_json_encode for backwards compatibility.
		}

	}

	/**
	 * Upgrade routine for version 6.1.1
	 */
	public function v611_upgrades() {
		if ( wp_next_scheduled( 'exactmetrics_email_summaries_cron' ) ) {
			// Clear existing schedule.
			wp_clear_scheduled_hook( 'exactmetrics_email_summaries_cron' );

			// Schedule again.
			$schedule           = array();
			$schedule['day']    = rand( 0, 1 );
			$schedule['hour']   = rand( 0, 23 );
			$schedule['minute'] = rand( 0, 59 );
			$schedule['second'] = rand( 0, 59 );
			$schedule['offset'] = ( $schedule['day'] * DAY_IN_SECONDS ) +
			                      ( $schedule['hour'] * HOUR_IN_SECONDS ) +
			                      ( $schedule['minute'] * MINUTE_IN_SECONDS ) +
			                      $schedule['second'];
			$next_run           = strtotime( 'next saturday' ) + $schedule['offset'];
			wp_schedule_event( $next_run, 'weekly', 'exactmetrics_email_summaries_cron' );
		}
	}

	/**
	 * Upgrade routine for version 6.2.0
	 */
	public function v620_upgrades() {
		// Make sure the default for automatic updates is reflected correctly in the settings.
		if ( empty( $this->new_settings['automatic_updates'] ) ) {
			$this->new_settings['automatic_updates'] = 'none';
		}
	}
}
