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| 1 | <?php |
| 2 | /** |
| 3 | * Moves the Top tags & categories tile a reader placed on a customized Insights to Traffic, once. |
| 4 | * |
| 5 | * @package automattic/jetpack-premium-analytics |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\PremiumAnalytics; |
| 9 | |
| 10 | /** |
| 11 | * Top tags & categories moved from the Insights default layout to Traffic, which never reaches a |
| 12 | * layout the reader customized: core keeps those in the `persisted_preferences` user meta. This |
| 13 | * rewrites that meta once per reader, on the read that precedes the dashboard: the tile leaves a |
| 14 | * customized Insights and, when the reader customized Traffic too, joins its end as the default |
| 15 | * places it. The move is recorded in the same preferences, so a reader who removes the tile from |
| 16 | * Traffic afterwards is left alone. |
| 17 | * |
| 18 | * Temporary, to be removed once the move has reached the readers who customized a tab before it |
| 19 | * (WOOA7S-2291). The next layout change is a separate discussion, not a second entry here. |
| 20 | * |
| 21 | * @since $$next-version$$ |
| 22 | */ |
| 23 | class Stored_Layout_Move { |
| 24 | |
| 25 | const LAYOUTS_KEY = 'dashboardSectionLayouts'; |
| 26 | |
| 27 | /** The applied moves, by id, so a tile removed after its move stays removed. */ |
| 28 | const MOVES_KEY = 'dashboardLayoutMoves'; |
| 29 | |
| 30 | const MOVE_ID = 'tags-to-traffic'; |
| 31 | |
| 32 | const TYPE = 'jpa/tags'; |
| 33 | |
| 34 | const FROM = 'insights'; |
| 35 | |
| 36 | const TO = 'traffic'; |
| 37 | |
| 38 | /** |
| 39 | * Hook the preferences read. Priority 99 runs after core's own readers, as Gutenberg's default |
| 40 | * layout injection does. |
| 41 | * |
| 42 | * @return void |
| 43 | */ |
| 44 | public static function register() { |
| 45 | add_filter( 'get_user_metadata', array( __CLASS__, 'filter_user_meta' ), 99, 3 ); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Rewrite the stored section layouts on read, and persist the rewrite. |
| 50 | * |
| 51 | * @param mixed $value The pre-fetched value, or null to let the meta API resolve normally. |
| 52 | * @param int $user_id User ID. |
| 53 | * @param string $meta_key Meta key being read. |
| 54 | * @return mixed The original value, or a single-element array holding the moved preferences. |
| 55 | */ |
| 56 | public static function filter_user_meta( $value, $user_id, $meta_key ) { |
| 57 | global $wpdb; |
| 58 | |
| 59 | if ( $meta_key !== $wpdb->get_blog_prefix() . 'persisted_preferences' ) { |
| 60 | return $value; |
| 61 | } |
| 62 | |
| 63 | // The meta API runs this filter on our own read, and on the read inside the update. |
| 64 | remove_filter( 'get_user_metadata', array( __CLASS__, 'filter_user_meta' ), 99 ); |
| 65 | $preferences = get_user_meta( $user_id, $meta_key, true ); |
| 66 | $moved = is_array( $preferences ) ? self::move( $preferences ) : $preferences; |
| 67 | if ( $moved !== $preferences ) { |
| 68 | $moved['_modified'] = self::modified_after( $preferences['_modified'] ?? null ); |
| 69 | // The meta API unslashes what it is handed; this came from the database, already unslashed. |
| 70 | update_user_meta( $user_id, $meta_key, wp_slash( $moved ) ); |
| 71 | } |
| 72 | add_filter( 'get_user_metadata', array( __CLASS__, 'filter_user_meta' ), 99, 3 ); |
| 73 | |
| 74 | return $moved === $preferences ? $value : array( $moved ); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Apply the move to a reader who has stored layouts and has not had it yet. |
| 79 | * |
| 80 | * @param array $preferences The reader's persisted preferences. |
| 81 | * @return array The preferences, the same array when nothing moved. |
| 82 | */ |
| 83 | private static function move( array $preferences ) { |
| 84 | $scope = $preferences[ Enablement_Setting::PREFERENCES_SCOPE ] ?? array(); |
| 85 | $layouts = $scope[ self::LAYOUTS_KEY ] ?? null; |
| 86 | $applied = is_array( $scope[ self::MOVES_KEY ] ?? null ) ? $scope[ self::MOVES_KEY ] : array(); |
| 87 | |
| 88 | if ( ! is_array( $layouts ) || in_array( self::MOVE_ID, $applied, true ) ) { |
| 89 | return $preferences; |
| 90 | } |
| 91 | |
| 92 | // Without the destination's default there is nowhere to move the tile to, so nothing |
| 93 | // is touched or recorded, and a later read tries again. |
| 94 | $instance = self::default_instance( self::TO, self::TYPE ); |
| 95 | if ( ! $instance ) { |
| 96 | return $preferences; |
| 97 | } |
| 98 | |
| 99 | if ( is_array( $layouts[ self::FROM ] ?? null ) ) { |
| 100 | $layouts[ self::FROM ] = array_values( |
| 101 | array_filter( |
| 102 | $layouts[ self::FROM ], |
| 103 | function ( $widget ) { |
| 104 | return ! is_array( $widget ) || ( $widget['type'] ?? null ) !== self::TYPE; |
| 105 | } |
| 106 | ) |
| 107 | ); |
| 108 | } |
| 109 | |
| 110 | if ( is_array( $layouts[ self::TO ] ?? null ) && ! self::layout_has( $layouts[ self::TO ], self::TYPE ) ) { |
| 111 | $layouts[ self::TO ][] = $instance; |
| 112 | } |
| 113 | |
| 114 | $applied[] = self::MOVE_ID; |
| 115 | |
| 116 | $preferences[ Enablement_Setting::PREFERENCES_SCOPE ][ self::LAYOUTS_KEY ] = $layouts; |
| 117 | $preferences[ Enablement_Setting::PREFERENCES_SCOPE ][ self::MOVES_KEY ] = $applied; |
| 118 | |
| 119 | return $preferences; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * A `_modified` stamp the client's persistence layer takes over its localStorage copy: it |
| 124 | * keeps whichever is newer, and a browser clock ahead of the server would otherwise win. |
| 125 | * |
| 126 | * @param mixed $previous The stamp the preferences carried, if any. |
| 127 | * @return string |
| 128 | */ |
| 129 | private static function modified_after( $previous ) { |
| 130 | $now = time(); |
| 131 | $previous = is_string( $previous ) ? strtotime( $previous ) : false; |
| 132 | if ( $previous !== false && $previous >= $now ) { |
| 133 | $now = $previous + 1; |
| 134 | } |
| 135 | |
| 136 | return gmdate( 'Y-m-d\TH:i:s\Z', $now ); |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Whether a stored layout lists a widget type. |
| 141 | * |
| 142 | * @param mixed $layout The stored layout, if any. |
| 143 | * @param string $type Widget type. |
| 144 | * @return bool |
| 145 | */ |
| 146 | private static function layout_has( $layout, $type ) { |
| 147 | if ( ! is_array( $layout ) ) { |
| 148 | return false; |
| 149 | } |
| 150 | foreach ( $layout as $widget ) { |
| 151 | if ( is_array( $widget ) && ( $widget['type'] ?? null ) === $type ) { |
| 152 | return true; |
| 153 | } |
| 154 | } |
| 155 | return false; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * The instance a section's default layout carries for a type, without the default's `order`: |
| 160 | * a stored layout is positional, so the order would rank the widget ahead of the end. |
| 161 | * |
| 162 | * @param string $slug Section slug. |
| 163 | * @param string $type Widget type. |
| 164 | * @return array|null |
| 165 | */ |
| 166 | private static function default_instance( $slug, $type ) { |
| 167 | if ( ! defined( __NAMESPACE__ . '\\DASHBOARD_NAME' ) ) { |
| 168 | return null; |
| 169 | } |
| 170 | |
| 171 | $section = Dashboard_Section_Registry::get_instance()->get_registered_by_slug( DASHBOARD_NAME, $slug ); |
| 172 | if ( ! $section ) { |
| 173 | return null; |
| 174 | } |
| 175 | |
| 176 | foreach ( $section->get_default_layout() as $widget ) { |
| 177 | if ( is_array( $widget ) && ( $widget['type'] ?? null ) === $type ) { |
| 178 | if ( isset( $widget['placement'] ) && is_array( $widget['placement'] ) ) { |
| 179 | unset( $widget['placement']['order'] ); |
| 180 | } |
| 181 | return $widget; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | return null; |
| 186 | } |
| 187 | } |