<?php
/**
 * Addons class.
 *
 * @since 6.0.0
 *
 * @package ExactMetrics
 * @author  Chris Christoff
 */

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


/**
 * Callback to output the ExactMetrics addons page.
 *
 * @since 6.0.0
 */
function exactmetrics_addons_page() {
    echo exactmetrics_ublock_notice();
    exactmetrics_settings_error_page( 'exactmetrics-addons' );
    exactmetrics_settings_inline_js();
}

/**
 * Retrieves addons from the stored transient or remote server.
 *
 * @since 6.0.0
 *
 * @return bool | array    false | Array of licensed and unlicensed Addons.
 */
function exactmetrics_get_addons() {

    // Get license key and type.
	$key = '';
	$type = 'lite';
	if ( exactmetrics_is_pro_version() ) {
		$key  = is_network_admin() ? ExactMetrics()->license->get_network_license_key() : ExactMetrics()->license->get_site_license_key();
		$type = is_network_admin() ? ExactMetrics()->license->get_network_license_type() : ExactMetrics()->license->get_site_license_type();
	}

    // Get addons data from transient or perform API query if no transient.
    if ( false === ( $addons = get_transient( '_exactmetrics_addons' ) ) ) {
        $addons = exactmetrics_get_addons_data( $key );
    }

    // If no Addons exist, return false
    if ( ! $addons ) {
        return false;
    }

    // Iterate through Addons, to build two arrays:
    // - Addons the user is licensed to use,
    // - Addons the user isn't licensed to use.
    $results = array(
        'licensed'  => array(),
        'unlicensed'=> array(),
    );
    foreach ( (array) $addons as $i => $addon ) {

        // Determine whether the user is licensed to use this Addon or not.
        if (
            empty( $type ) ||
            ( in_array( 'Pro', $addon->categories ) && ( $type != 'pro' && $type != 'master' ) ) ||
            ( in_array( 'Plus', $addon->categories ) && $type != 'plus' && $type != 'pro' && $type != 'master' ) ||
            ( in_array( 'Basic', $addon->categories ) && ( $type != 'basic' && $type != 'plus' && $type != 'pro' && $type != 'master' ) )
        ) {
            // Unlicensed
            $results['unlicensed'][] = $addon;
            continue;
        }

        // Licensed
        $results['licensed'][] = $addon;

    }

    // Return Addons, split by licensed and unlicensed.
    return $results;

}

/**
 * Pings the remote server for addons data.
 *
 * @since 6.0.0
 *
 * @param   string      $key    The user license key.
 * @return  array               Array of addon data otherwise.
 */
function exactmetrics_get_addons_data( $key ) {
    // Get Addons
    // If the key is valid, we'll get personalised upgrade URLs for each Addon (if necessary) and plugin update information.
    if ( exactmetrics_is_pro_version() && $key ) {
        $addons = ExactMetrics()->license_actions->perform_remote_request( 'get-addons-data-v600', array( 'tgm-updater-key' => $key ) );
    } else {
        $addons = exactmetrics_get_all_addons_data();
    }

    // If there was an API error, set transient for only 10 minutes.
    if ( ! $addons ) {
        set_transient( '_exactmetrics_addons', false, 10 * MINUTE_IN_SECONDS );
        return false;
    }

    // If there was an error retrieving the addons, set the error.
    if ( isset( $addons->error ) ) {
        set_transient( '_exactmetrics_addons', false, 10 * MINUTE_IN_SECONDS );
        return false;
    }

    // Otherwise, our request worked. Save the data and return it.
    set_transient( '_exactmetrics_addons', $addons, 4 * HOUR_IN_SECONDS );
    return $addons;

}

/**
 * Get all addons without a license, for lite users.
 *
 * @return array|bool|mixed|object
 */
function exactmetrics_get_all_addons_data() {
	// Build the body of the request.
	$body = array(
		'tgm-updater-action'     => 'get-all-addons-data',
		'tgm-updater-key'        => '',
		'tgm-updater-wp-version' => get_bloginfo( 'version' ),
		'tgm-updater-referer'    => site_url(),
		'tgm-updater-mi-version' => EXACTMETRICS_VERSION,
		'tgm-updater-is-pro'     => false,
	);
	$body = http_build_query( $body, '', '&' );

	// Build the headers of the request.
	$headers = array(
		'Content-Type'   => 'application/x-www-form-urlencoded',
		'Content-Length' => strlen( $body ),
	);

	// Setup variable for wp_remote_post.
	$post = array(
		'headers' => $headers,
		'body'    => $body,
	);

	// Perform the query and retrieve the response.
	$response      = wp_remote_post( exactmetrics_get_licensing_url(), $post );
	$response_code = wp_remote_retrieve_response_code( $response );
	$response_body = wp_remote_retrieve_body( $response );

	// Bail out early if there are any errors.
	if ( 200 !== $response_code || is_wp_error( $response_body ) ) {
		return false;
	}

	// Return the json decoded content.
	return json_decode( $response_body );
}

/**
 * Retrieve the plugin basename from the plugin slug.
 *
 * @since 6.0.0
 *
 * @param string $slug The plugin slug.
 * @return string      The plugin basename if found, else the plugin slug.
 */
function exactmetrics_get_plugin_basename_from_slug( $slug ) {
    $keys = array_keys( get_plugins() );

    foreach ( $keys as $key ) {
        if ( preg_match( '|^' . $slug . '|', $key ) ) {
            return $key;
        }
    }

    return $slug;

}
