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| 1 | <?php |
| 2 | /** |
| 3 | * The Stats settings a site owner can change. |
| 4 | * |
| 5 | * @package automattic/jetpack-stats |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Stats; |
| 9 | |
| 10 | use WP_Error; |
| 11 | |
| 12 | /** |
| 13 | * Reads and validates changes to the owner-facing keys of `stats_options`, and saves the WordPress.com Reader setting. |
| 14 | */ |
| 15 | class Settings { |
| 16 | const ERROR_PREFIX = 'jetpack_stats_'; |
| 17 | |
| 18 | /** |
| 19 | * The `stats_options` keys a site owner can change. Each key's type comes from `Options::get_defaults()`. |
| 20 | * |
| 21 | * @var string[] |
| 22 | */ |
| 23 | const KEYS = array( 'admin_bar', 'roles', 'count_roles', 'do_not_track' ); |
| 24 | |
| 25 | /** |
| 26 | * Get the current values of some `stats_options` keys. |
| 27 | * |
| 28 | * @param string[] $keys The keys to read. |
| 29 | * @return array |
| 30 | */ |
| 31 | public static function get( array $keys ): array { |
| 32 | $options = Options::get_options(); |
| 33 | $defaults = Options::get_defaults(); |
| 34 | $out = array(); |
| 35 | foreach ( $keys as $key ) { |
| 36 | $raw = $options[ $key ] ?? null; |
| 37 | $default = $defaults[ $key ] ?? null; |
| 38 | if ( is_bool( $default ) ) { |
| 39 | $out[ $key ] = (bool) $raw; |
| 40 | } elseif ( is_array( $default ) ) { |
| 41 | $out[ $key ] = is_array( $raw ) ? array_values( $raw ) : array(); |
| 42 | } else { |
| 43 | $out[ $key ] = $raw; |
| 44 | } |
| 45 | } |
| 46 | return $out; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Validate new values and save the ones that change. |
| 51 | * |
| 52 | * @param array $values New values, keyed by `stats_options` key. |
| 53 | * @param string[] $keys The keys the caller may change. |
| 54 | * @return array|WP_Error `changed` and the `settings` after the save, or why the values were refused. |
| 55 | */ |
| 56 | public static function update( array $values, array $keys ) { |
| 57 | $unknown = array_diff( $keys, self::KEYS ); |
| 58 | if ( ! empty( $unknown ) ) { |
| 59 | return new WP_Error( |
| 60 | self::ERROR_PREFIX . 'unknown_setting', |
| 61 | sprintf( |
| 62 | /* translators: %s: comma-separated list of setting names. */ |
| 63 | __( 'Unknown Stats settings: %s.', 'jetpack-stats-pkg' ), |
| 64 | implode( ', ', $unknown ) |
| 65 | ), |
| 66 | array( 'status' => 400 ) |
| 67 | ); |
| 68 | } |
| 69 | |
| 70 | $provided = array_intersect_key( $values, array_flip( $keys ) ); |
| 71 | if ( empty( $provided ) ) { |
| 72 | return new WP_Error( |
| 73 | self::ERROR_PREFIX . 'missing_setting_field', |
| 74 | sprintf( |
| 75 | /* translators: %s: comma-separated list of writable field names. */ |
| 76 | __( 'Provide at least one of: %s.', 'jetpack-stats-pkg' ), |
| 77 | implode( ', ', $keys ) |
| 78 | ), |
| 79 | array( 'status' => 400 ) |
| 80 | ); |
| 81 | } |
| 82 | |
| 83 | $defaults = Options::get_defaults(); |
| 84 | $before = self::get( $keys ); |
| 85 | $known_roles = null; |
| 86 | foreach ( $keys as $role_field ) { |
| 87 | if ( ! array_key_exists( $role_field, $provided ) ) { |
| 88 | continue; |
| 89 | } |
| 90 | if ( ! is_array( $defaults[ $role_field ] ?? null ) ) { |
| 91 | continue; |
| 92 | } |
| 93 | if ( null === $known_roles ) { |
| 94 | $known_roles = array_keys( wp_roles()->roles ); |
| 95 | } |
| 96 | if ( ! is_array( $provided[ $role_field ] ) ) { |
| 97 | return new WP_Error( |
| 98 | self::ERROR_PREFIX . 'invalid_' . $role_field, |
| 99 | sprintf( |
| 100 | /* translators: %s: the offending field name. */ |
| 101 | __( 'Field `%s` must be an array of role slugs.', 'jetpack-stats-pkg' ), |
| 102 | $role_field |
| 103 | ), |
| 104 | array( 'status' => 400 ) |
| 105 | ); |
| 106 | } |
| 107 | // Direct PHP callers skip the REST schema's `minItems` check. |
| 108 | if ( 'roles' === $role_field && empty( $provided[ $role_field ] ) ) { |
| 109 | return new WP_Error( |
| 110 | self::ERROR_PREFIX . 'invalid_roles', |
| 111 | __( 'Field `roles` must be a non-empty array of role slugs.', 'jetpack-stats-pkg' ), |
| 112 | array( 'status' => 400 ) |
| 113 | ); |
| 114 | } |
| 115 | $sanitized = array(); |
| 116 | foreach ( $provided[ $role_field ] as $role ) { |
| 117 | if ( ! is_string( $role ) || '' === $role ) { |
| 118 | return new WP_Error( |
| 119 | self::ERROR_PREFIX . 'invalid_role', |
| 120 | sprintf( |
| 121 | /* translators: 1: field name, 2: comma-separated list of valid role slugs. */ |
| 122 | __( 'Role slugs in `%1$s` must be non-empty strings. Known roles: %2$s.', 'jetpack-stats-pkg' ), |
| 123 | $role_field, |
| 124 | implode( ', ', $known_roles ) |
| 125 | ), |
| 126 | array( 'status' => 400 ) |
| 127 | ); |
| 128 | } |
| 129 | if ( ! in_array( $role, $known_roles, true ) && ! in_array( $role, $before[ $role_field ], true ) ) { |
| 130 | return new WP_Error( |
| 131 | self::ERROR_PREFIX . 'invalid_role', |
| 132 | sprintf( |
| 133 | /* translators: 1: unknown role slug, 2: field name, 3: comma-separated list of valid role slugs. */ |
| 134 | __( 'Unknown role `%1$s` in `%2$s`. Known roles: %3$s.', 'jetpack-stats-pkg' ), |
| 135 | $role, |
| 136 | $role_field, |
| 137 | implode( ', ', $known_roles ) |
| 138 | ), |
| 139 | array( 'status' => 400 ) |
| 140 | ); |
| 141 | } |
| 142 | $sanitized[] = $role; |
| 143 | } |
| 144 | // Administrators keep `view_stats`, because the screen that changes this list needs it. |
| 145 | if ( 'roles' === $role_field && ! in_array( 'administrator', $sanitized, true ) ) { |
| 146 | array_unshift( $sanitized, 'administrator' ); |
| 147 | } |
| 148 | $provided[ $role_field ] = array_values( array_unique( $sanitized ) ); |
| 149 | } |
| 150 | |
| 151 | $changes = array(); |
| 152 | foreach ( $provided as $key => $value ) { |
| 153 | if ( is_bool( $defaults[ $key ] ?? null ) ) { |
| 154 | $value = (bool) $value; |
| 155 | } |
| 156 | $current = $before[ $key ] ?? null; |
| 157 | if ( $current === $value ) { |
| 158 | continue; |
| 159 | } |
| 160 | $changes[ $key ] = $value; |
| 161 | } |
| 162 | |
| 163 | if ( ! empty( $changes ) ) { |
| 164 | Options::set_options( $changes ); |
| 165 | } |
| 166 | |
| 167 | $after = self::get( $keys ); |
| 168 | foreach ( $changes as $key => $value ) { |
| 169 | if ( $after[ $key ] !== $value ) { |
| 170 | return new WP_Error( |
| 171 | self::ERROR_PREFIX . 'save_failed', |
| 172 | __( 'The Stats settings could not be saved.', 'jetpack-stats-pkg' ), |
| 173 | array( 'status' => 500 ) |
| 174 | ); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | return array( |
| 179 | 'changed' => $after !== $before, |
| 180 | 'settings' => $after, |
| 181 | ); |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Save whether the WordPress.com Reader shows post views for this site. |
| 186 | * |
| 187 | * @since 0.23.0 |
| 188 | * |
| 189 | * @param bool $enabled Whether the Reader shows post views. |
| 190 | * @return true|WP_Error True once stored, or an error when the site kept another value. |
| 191 | */ |
| 192 | public static function update_reader_views( bool $enabled ) { |
| 193 | $value = (int) $enabled; |
| 194 | update_option( 'wpcom_reader_views_enabled', $value ); |
| 195 | // update_option() also returns false for an unchanged value, so read the option back. |
| 196 | if ( (int) get_option( 'wpcom_reader_views_enabled', 1 ) !== $value ) { |
| 197 | return new WP_Error( |
| 198 | self::ERROR_PREFIX . 'save_failed', |
| 199 | __( 'The Stats settings could not be saved.', 'jetpack-stats-pkg' ), |
| 200 | array( 'status' => 500 ) |
| 201 | ); |
| 202 | } |
| 203 | |
| 204 | return true; |
| 205 | } |
| 206 | } |