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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\SecurePoll\Store; |
| 4 | |
| 5 | use MediaWiki\Status\Status; |
| 6 | use Wikimedia\Rdbms\ILoadBalancer; |
| 7 | |
| 8 | /** |
| 9 | * Storage class for a DB backend. This is the one that's most often used. |
| 10 | */ |
| 11 | class DBStore implements Store { |
| 12 | |
| 13 | /** @var ILoadBalancer */ |
| 14 | private $loadBalancer; |
| 15 | |
| 16 | /** @var string|bool */ |
| 17 | private $wiki; |
| 18 | |
| 19 | /** |
| 20 | * DBStore constructor. |
| 21 | * @param ILoadBalancer $loadBalancer The load balancer used to get connection objects |
| 22 | * @param string|bool $wiki The wiki ID or false to use the local wiki |
| 23 | */ |
| 24 | public function __construct( |
| 25 | ILoadBalancer $loadBalancer, |
| 26 | $wiki = false |
| 27 | ) { |
| 28 | $this->loadBalancer = $loadBalancer; |
| 29 | $this->wiki = $wiki; |
| 30 | } |
| 31 | |
| 32 | /** @inheritDoc */ |
| 33 | public function getMessages( $lang, $ids ) { |
| 34 | $db = $this->getDB( DB_REPLICA ); |
| 35 | $res = $db->newSelectQueryBuilder() |
| 36 | ->select( '*' ) |
| 37 | ->from( 'securepoll_msgs' ) |
| 38 | ->where( [ |
| 39 | 'msg_entity' => $ids, |
| 40 | 'msg_lang' => $lang |
| 41 | ] ) |
| 42 | ->caller( __METHOD__ ) |
| 43 | ->fetchResultSet(); |
| 44 | $messages = []; |
| 45 | foreach ( $res as $row ) { |
| 46 | $messages[$row->msg_entity][$row->msg_key] = $row->msg_text; |
| 47 | } |
| 48 | |
| 49 | return $messages; |
| 50 | } |
| 51 | |
| 52 | /** @inheritDoc */ |
| 53 | public function getLangList( $ids ) { |
| 54 | $db = $this->getDB( DB_REPLICA ); |
| 55 | $res = $db->newSelectQueryBuilder() |
| 56 | ->select( 'msg_lang' ) |
| 57 | ->distinct() |
| 58 | ->from( 'securepoll_msgs' ) |
| 59 | ->where( [ |
| 60 | 'msg_entity' => $ids |
| 61 | ] ) |
| 62 | ->caller( __METHOD__ ) |
| 63 | ->fetchResultSet(); |
| 64 | $langs = []; |
| 65 | foreach ( $res as $row ) { |
| 66 | $langs[] = $row->msg_lang; |
| 67 | } |
| 68 | |
| 69 | return $langs; |
| 70 | } |
| 71 | |
| 72 | /** @inheritDoc */ |
| 73 | public function getProperties( $ids ) { |
| 74 | $db = $this->getDB( DB_REPLICA ); |
| 75 | $res = $db->newSelectQueryBuilder() |
| 76 | ->select( '*' ) |
| 77 | ->from( 'securepoll_properties' ) |
| 78 | ->where( [ 'pr_entity' => $ids ] ) |
| 79 | ->caller( __METHOD__ ) |
| 80 | ->fetchResultSet(); |
| 81 | $properties = []; |
| 82 | foreach ( $res as $row ) { |
| 83 | $properties[$row->pr_entity][$row->pr_key] = $row->pr_value; |
| 84 | } |
| 85 | |
| 86 | return $properties; |
| 87 | } |
| 88 | |
| 89 | /** @inheritDoc */ |
| 90 | public function getElectionInfo( $ids ) { |
| 91 | $ids = (array)$ids; |
| 92 | $db = $this->getDB( DB_REPLICA ); |
| 93 | $res = $db->newSelectQueryBuilder() |
| 94 | ->select( '*' ) |
| 95 | ->from( 'securepoll_elections' ) |
| 96 | ->where( [ 'el_entity' => $ids ] ) |
| 97 | ->caller( __METHOD__ ) |
| 98 | ->fetchResultSet(); |
| 99 | $infos = []; |
| 100 | foreach ( $res as $row ) { |
| 101 | $infos[$row->el_entity] = $this->decodeElectionRow( $row ); |
| 102 | } |
| 103 | |
| 104 | return $infos; |
| 105 | } |
| 106 | |
| 107 | /** @inheritDoc */ |
| 108 | public function getElectionInfoByTitle( $names ) { |
| 109 | $names = (array)$names; |
| 110 | $db = $this->getDB( DB_REPLICA ); |
| 111 | $res = $db->newSelectQueryBuilder() |
| 112 | ->select( '*' ) |
| 113 | ->from( 'securepoll_elections' ) |
| 114 | ->where( [ 'el_title' => $names ] ) |
| 115 | ->caller( __METHOD__ ) |
| 116 | ->fetchResultSet(); |
| 117 | $infos = []; |
| 118 | foreach ( $res as $row ) { |
| 119 | $infos[$row->el_title] = $this->decodeElectionRow( $row ); |
| 120 | } |
| 121 | |
| 122 | return $infos; |
| 123 | } |
| 124 | |
| 125 | /** @inheritDoc */ |
| 126 | public function decodeElectionRow( $row ) { |
| 127 | static $map = [ |
| 128 | 'id' => 'el_entity', |
| 129 | 'title' => 'el_title', |
| 130 | 'ballot' => 'el_ballot', |
| 131 | 'tally' => 'el_tally', |
| 132 | 'primaryLang' => 'el_primary_lang', |
| 133 | 'startDate' => 'el_start_date', |
| 134 | 'endDate' => 'el_end_date', |
| 135 | 'auth' => 'el_auth_type', |
| 136 | 'owner' => 'el_owner' |
| 137 | ]; |
| 138 | |
| 139 | $info = []; |
| 140 | foreach ( $map as $key => $field ) { |
| 141 | if ( $key == 'startDate' || $key == 'endDate' ) { |
| 142 | $info[$key] = wfTimestamp( TS_MW, $row->$field ); |
| 143 | } elseif ( isset( $row->$field ) ) { |
| 144 | $info[$key] = $row->$field; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | return $info; |
| 149 | } |
| 150 | |
| 151 | /** @inheritDoc */ |
| 152 | public function getDB( $index = DB_PRIMARY ) { |
| 153 | return $this->loadBalancer->getConnection( |
| 154 | $index, |
| 155 | [], |
| 156 | $this->wiki |
| 157 | ); |
| 158 | } |
| 159 | |
| 160 | /** @inheritDoc */ |
| 161 | public function getQuestionInfo( $electionId ) { |
| 162 | $db = $this->getDB( DB_REPLICA ); |
| 163 | $res = $db->newSelectQueryBuilder() |
| 164 | ->select( '*' ) |
| 165 | ->from( 'securepoll_questions' ) |
| 166 | ->join( 'securepoll_options', null, 'op_question=qu_entity' ) |
| 167 | ->where( [ |
| 168 | 'qu_election' => $electionId, |
| 169 | ] ) |
| 170 | ->orderBy( [ 'qu_index', 'qu_entity' ] ) |
| 171 | ->caller( __METHOD__ ) |
| 172 | ->fetchResultSet(); |
| 173 | |
| 174 | $questions = []; |
| 175 | $options = []; |
| 176 | $questionId = false; |
| 177 | $electionId = false; |
| 178 | foreach ( $res as $row ) { |
| 179 | if ( $questionId !== false && $questionId !== $row->qu_entity ) { |
| 180 | $questions[] = [ |
| 181 | 'id' => $questionId, |
| 182 | 'election' => $electionId, |
| 183 | 'options' => $options |
| 184 | ]; |
| 185 | $options = []; |
| 186 | } |
| 187 | $options[] = [ |
| 188 | 'id' => $row->op_entity, |
| 189 | 'election' => $row->op_election, |
| 190 | ]; |
| 191 | $questionId = $row->qu_entity; |
| 192 | $electionId = $row->qu_election; |
| 193 | } |
| 194 | if ( $questionId !== false ) { |
| 195 | $questions[] = [ |
| 196 | 'id' => $questionId, |
| 197 | 'election' => $electionId, |
| 198 | 'options' => $options |
| 199 | ]; |
| 200 | } |
| 201 | |
| 202 | return $questions; |
| 203 | } |
| 204 | |
| 205 | /** @inheritDoc */ |
| 206 | public function callbackValidVotes( $electionId, $callback, $voterId = null ) { |
| 207 | $dbr = $this->getDB( DB_REPLICA ); |
| 208 | $queryBuilder = $dbr->newSelectQueryBuilder() |
| 209 | ->select( '*' ) |
| 210 | ->from( 'securepoll_votes' ) |
| 211 | ->where( [ |
| 212 | 'vote_election' => $electionId, |
| 213 | 'vote_current' => 1, |
| 214 | 'vote_struck' => 0 |
| 215 | ] ) |
| 216 | ->caller( __METHOD__ ); |
| 217 | if ( $voterId !== null ) { |
| 218 | $queryBuilder->andWhere( [ 'vote_voter' => $voterId ] ); |
| 219 | } |
| 220 | $res = $queryBuilder->fetchResultSet(); |
| 221 | |
| 222 | foreach ( $res as $row ) { |
| 223 | $status = $callback( $this, $row->vote_record ); |
| 224 | if ( $status instanceof Status && !$status->isOK() ) { |
| 225 | return $status; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | return Status::newGood(); |
| 230 | } |
| 231 | |
| 232 | /** @inheritDoc */ |
| 233 | public function getEntityType( $id ) { |
| 234 | $db = $this->getDB( DB_REPLICA ); |
| 235 | $res = $db->newSelectQueryBuilder() |
| 236 | ->select( '*' ) |
| 237 | ->from( 'securepoll_entity' ) |
| 238 | ->where( [ 'en_id' => $id ] ) |
| 239 | ->caller( __METHOD__ ) |
| 240 | ->fetchRow(); |
| 241 | |
| 242 | return $res ? $res->en_type : false; |
| 243 | } |
| 244 | } |