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<?php |
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/** |
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* Critical CSS job enqueue logic. |
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*/ |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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class autoptimizeCriticalCSSEnqueue { |
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public function __construct() |
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{ |
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// fetch all options at once and populate them individually explicitely as globals. |
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$all_options = autoptimizeCriticalCSSBase::fetch_options(); |
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foreach ( $all_options as $_option => $_value ) { |
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global ${$_option}; |
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${$_option} = $_value; |
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} |
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} |
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|
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public static function ao_ccss_enqueue( $hash ) { |
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$self = new self(); |
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// Get key status. |
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$key = autoptimizeCriticalCSSCore::ao_ccss_key_status( false ); |
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|
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// Queue is available to anyone... |
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$enqueue = true; |
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|
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// ... which are not the ones below. |
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if ( is_user_logged_in() || is_feed() || is_404() || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) || $self->ao_ccss_ua() || 'nokey' == $key['status'] || 'invalid' == $key['status'] || false === apply_filters( 'autoptimize_filter_ccss_enqueue_should_enqueue', true ) ) { |
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$enqueue = false; |
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autoptimizeCriticalCSSCore::ao_ccss_log( "Job queuing is not available for WordPress's logged in users, feeds, error pages, ajax calls, to criticalcss.com itself or when a valid API key is not found", 3 ); |
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} |
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|
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if ( $enqueue ) { |
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// Continue if queue is available |
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// Attach required arrays/ vars. |
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global $ao_ccss_rules; |
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global $ao_ccss_queue_raw; |
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global $ao_ccss_queue; |
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global $ao_ccss_forcepath; |
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|
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// Get request path and page type, and initialize the queue update flag. |
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$req_orig = $_SERVER['REQUEST_URI']; |
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$req_path = strtok( $req_orig, '?' ); |
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|
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// Check if we have a lang param. we need to keep as WPML can switch languages based on that |
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// and that includes RTL -> LTR so diff. structure, so rules would be RTL vs LTR |
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// but this needs changes in the structur of the rule object so off by default for now |
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// as now this will simply result in conditional rules being overwritten. |
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if ( apply_filters( 'autoptimize_filter_ccss_coreenqueue_honor_lang', false ) && strpos( $req_orig, 'lang=' ) !== false ) { |
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$req_params = strtok( '?' ); |
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parse_str( $req_params, $req_params_arr ); |
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if ( array_key_exists( 'lang', $req_params_arr ) && !empty( $req_params_arr['lang'] ) ) { |
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$req_path .= '?lang=' . $req_params_arr['lang']; |
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} |
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} |
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|
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$req_type = $self->ao_ccss_get_type(); |
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$job_qualify = false; |
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$target_rule = false; |
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$rule_properties = false; |
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$queue_update = false; |
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|
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// Match for paths in rules. |
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foreach ( $ao_ccss_rules['paths'] as $path => $props ) { |
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|
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// Prepare rule target and log. |
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$target_rule = 'paths|' . $path; |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Qualifying path <' . $req_path . '> for job submission by rule <' . $target_rule . '>', 3 ); |
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|
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// Path match |
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// -> exact match needed for AUTO rules |
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// -> partial match OK for MANUAL rules (which have empty hash and a file with CCSS). |
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if ( $path === $req_path || ( false == $props['hash'] && false != $props['file'] && preg_match( '|' . $path . '|', $req_path ) ) ) { |
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|
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// There's a path match in the rule, so job QUALIFIES with a path rule match. |
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$job_qualify = true; |
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$rule_properties = $props; |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Path <' . $req_path . '> QUALIFIED for job submission by rule <' . $target_rule . '>', 3 ); |
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|
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// Stop processing other path rules. |
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break; |
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} |
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} |
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|
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// Match for types in rules if no path rule matches and if we're not enforcing paths. |
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if ( ! $job_qualify && ( ! $ao_ccss_forcepath || ! in_array( $req_type, apply_filters( 'autoptimize_filter_ccss_coreenqueue_forcepathfortype', array( 'is_page' ) ) ) || ! apply_filters( 'autoptimize_filter_ccss_coreenqueue_ignorealltypes', false ) ) ) { |
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foreach ( $ao_ccss_rules['types'] as $type => $props ) { |
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|
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// Prepare rule target and log. |
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$target_rule = 'types|' . $type; |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Qualifying page type <' . $req_type . '> on path <' . $req_path . '> for job submission by rule <' . $target_rule . '>', 3 ); |
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|
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if ( $req_type == $type ) { |
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// Type match. |
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// There's a type match in the rule, so job QUALIFIES with a type rule match. |
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$job_qualify = true; |
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$rule_properties = $props; |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Page type <' . $req_type . '> on path <' . $req_path . '> QUALIFIED for job submission by rule <' . $target_rule . '>', 3 ); |
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|
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// Stop processing other type rules. |
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break; |
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} |
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} |
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} |
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|
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if ( $job_qualify && ( ( false == $rule_properties['hash'] && false != $rule_properties['file'] ) || strpos( $req_type, 'template_' ) !== false ) ) { |
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// If job qualifies but rule hash is false and file isn't false (MANUAL rule) or if template, job does not qualify despite what previous evaluations says. |
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$job_qualify = false; |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Job submission DISQUALIFIED by MANUAL rule <' . $target_rule . '> with hash <' . $rule_properties['hash'] . '> and file <' . $rule_properties['file'] . '>', 3 ); |
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} elseif ( ! $job_qualify && empty( $rule_properties ) ) { |
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// But if job does not qualify and rule properties are set, job qualifies as there is no matching rule for it yet |
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// Fill-in the new target rule. |
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$job_qualify = true; |
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|
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// Should we switch to path-base AUTO-rules? Conditions: |
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// 1. forcepath option has to be enabled (off by default) |
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// 2. request type should be (by default, but filterable) one of is_page (removed for now: woo_is_product or woo_is_product_category). |
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if ( ( $ao_ccss_forcepath && in_array( $req_type, apply_filters( 'autoptimize_filter_ccss_coreenqueue_forcepathfortype', array( 'is_page' ) ) ) ) || apply_filters( 'autoptimize_filter_ccss_coreenqueue_ignorealltypes', false ) ) { |
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if ( '/' !== $req_path ) { |
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$target_rule = 'paths|' . $req_path; |
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} else { |
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// Exception; we don't want a path-based rule for "/" as that messes things up, hard-switch this to a type-based is_front_page rule. |
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$target_rule = 'types|' . 'is_front_page'; |
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} |
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} else { |
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$target_rule = 'types|' . $req_type; |
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} |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Job submission QUALIFIED by MISSING rule for page type <' . $req_type . '> on path <' . $req_path . '>, new rule target is <' . $target_rule . '>', 3 ); |
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} else { |
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// Or just log a job qualified by a matching rule. |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Job submission QUALIFIED by AUTO rule <' . $target_rule . '> with hash <' . $rule_properties['hash'] . '> and file <' . $rule_properties['file'] . '>', 3 ); |
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} |
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|
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// Submit job. |
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if ( $job_qualify ) { |
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if ( ! array_key_exists( $req_path, $ao_ccss_queue ) ) { |
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// This is a NEW job |
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// Merge job into the queue. |
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$ao_ccss_queue[ $req_path ] = $self->ao_ccss_define_job( |
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$req_path, |
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$target_rule, |
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$req_type, |
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$hash, |
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null, |
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null, |
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null, |
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null, |
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true |
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); |
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// Set update flag. |
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$queue_update = true; |
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} else { |
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// This is an existing job |
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// The job is still NEW, most likely this is extra CSS file for the same page that needs a hash. |
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if ( 'NEW' == $ao_ccss_queue[ $req_path ]['jqstat'] ) { |
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// Add hash if it's not already in the job. |
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if ( ! in_array( $hash, $ao_ccss_queue[ $req_path ]['hashes'] ) ) { |
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// Push new hash to its array and update flag. |
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$queue_update = array_push( $ao_ccss_queue[ $req_path ]['hashes'], $hash ); |
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|
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// Log job update. |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Hashes UPDATED on local job id <' . $ao_ccss_queue[ $req_path ]['ljid'] . '>, job status NEW, target rule <' . $ao_ccss_queue[ $req_path ]['rtarget'] . '>, hash added: ' . $hash, 3 ); |
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|
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// Return from here as the hash array is already updated. |
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return true; |
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} |
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} elseif ( 'NEW' != $ao_ccss_queue[ $req_path ]['jqstat'] && 'JOB_QUEUED' != $ao_ccss_queue[ $req_path ]['jqstat'] && 'JOB_ONGOING' != $ao_ccss_queue[ $req_path ]['jqstat'] ) { |
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// Allow requeuing jobs that are not NEW, JOB_QUEUED or JOB_ONGOING |
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// Merge new job keeping some previous job values. |
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$ao_ccss_queue[ $req_path ] = $self->ao_ccss_define_job( |
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$req_path, |
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$target_rule, |
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$req_type, |
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$hash, |
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$ao_ccss_queue[ $req_path ]['file'], |
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$ao_ccss_queue[ $req_path ]['jid'], |
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$ao_ccss_queue[ $req_path ]['jrstat'], |
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$ao_ccss_queue[ $req_path ]['jvstat'], |
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false |
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); |
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// Set update flag. |
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$queue_update = true; |
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} |
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} |
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|
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if ( $queue_update ) { |
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// Persist the job to the queue and return. |
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$ao_ccss_queue_raw = json_encode( $ao_ccss_queue ); |
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update_option( 'autoptimize_ccss_queue', $ao_ccss_queue_raw, false ); |
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return true; |
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} else { |
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// Or just return false if no job was added. |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'A job for path <' . $req_path . '> already exist with NEW or PENDING status, skipping job creation', 3 ); |
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return false; |
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} |
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} |
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} |
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} |
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|
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public function ao_ccss_get_type() { |
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// Get the type of a page |
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// Attach the conditional tags array. |
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global $ao_ccss_types; |
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global $ao_ccss_forcepath; |
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|
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// By default, a page type is false. |
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$page_type = false; |
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|
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// Iterates over the array to match a type. |
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foreach ( $ao_ccss_types as $type ) { |
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if ( is_404() ) { |
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$page_type = 'is_404'; |
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break; |
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} elseif ( is_front_page() ) { |
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// identify frontpage immediately to avoid it also matching a CPT or template. |
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$page_type = 'is_front_page'; |
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break; |
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} elseif ( strpos( $type, 'custom_post_' ) !== false && ( ! $ao_ccss_forcepath || ! is_page() ) ) { |
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// Match custom post types and not page or page not forced to path-based. |
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if ( get_post_type( get_the_ID() ) === substr( $type, 12 ) ) { |
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$page_type = $type; |
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break; |
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} |
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} elseif ( strpos( $type, 'template_' ) !== false && ( ! $ao_ccss_forcepath || ! is_page() ) ) { |
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// Match templates if not page or if page is not forced to path-based. |
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if ( is_page_template( substr( $type, 9 ) ) ) { |
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$page_type = $type; |
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break; |
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} |
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} else { |
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// Match all other existing types |
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// but remove prefix to be able to check if the function exists & returns true. |
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$_type = str_replace( array( 'woo_', 'bp_', 'bbp_', 'edd_' ), '', $type ); |
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if ( function_exists( $_type ) && call_user_func( $_type ) ) { |
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// Make sure we only return for one page, not for the "paged pages" (/page/2 ..). |
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if ( ! is_page() || ! is_paged() ) { |
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$page_type = $type; |
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break; |
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} |
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} |
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} |
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} |
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|
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// Return the page type. |
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return $page_type; |
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} |
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|
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public function ao_ccss_define_job( $path, $target, $type, $hash, $file, $jid, $jrstat, $jvstat, $create ) { |
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// Define a job entry to be created or updated |
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// Define commom job properties. |
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$path = array(); |
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$path['ljid'] = $this->ao_ccss_job_id(); |
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$path['rtarget'] = $target; |
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$path['ptype'] = $type; |
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$path['hashes'] = array( $hash ); |
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$path['hash'] = $hash; |
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$path['file'] = $file; |
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$path['jid'] = $jid; |
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$path['jqstat'] = 'NEW'; |
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$path['jrstat'] = $jrstat; |
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$path['jvstat'] = $jvstat; |
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$path['jctime'] = microtime( true ); |
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$path['jftime'] = null; |
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|
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// Set operation requested. |
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if ( $create ) { |
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$operation = 'CREATED'; |
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} else { |
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$operation = 'UPDATED'; |
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} |
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|
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// Log job creation. |
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autoptimizeCriticalCSSCore::ao_ccss_log( 'Job ' . $operation . ' with local job id <' . $path['ljid'] . '> for target rule <' . $target . '>', 3 ); |
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|
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return $path; |
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} |
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|
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public function ao_ccss_job_id( $length = 6 ) { |
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// Generate random strings for the local job ID |
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// Based on https://stackoverflow.com/a/4356295 . |
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$characters = '0123456789abcdefghijklmnopqrstuvwxyz'; |
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$characters_length = strlen( $characters ); |
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$random_string = 'j-'; |
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for ( $i = 0; $i < $length; $i++ ) { |
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$random_string .= $characters[ rand( 0, $characters_length - 1 ) ]; |
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} |
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return $random_string; |
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} |
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|
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public function ao_ccss_ua() { |
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// Check for criticalcss.com user agent. |
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$agent = ''; |
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if ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) { |
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$agent = $_SERVER['HTTP_USER_AGENT']; |
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} |
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|
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// Check for UA and return TRUE when criticalcss.com is the detected UA, false when not. |
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$rtn = strpos( $agent, AO_CCSS_URL ); |
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if ( 0 === $rtn ) { |
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$rtn = true; |
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} else { |
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$rtn = false; |
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} |
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return ( $rtn ); |
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} |
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} |
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|
