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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Formatter; |
| 4 | |
| 5 | use Flow\Data\ManagerGroup; |
| 6 | use Flow\Exception\InvalidInputException; |
| 7 | use Flow\Exception\InvalidParameterException; |
| 8 | use Flow\Exception\PermissionException; |
| 9 | use Flow\Model\AbstractRevision; |
| 10 | use Flow\Model\UUID; |
| 11 | use Flow\Repository\TreeRepository; |
| 12 | use Flow\RevisionActionPermissions; |
| 13 | |
| 14 | abstract class RevisionViewQuery extends AbstractQuery { |
| 15 | |
| 16 | /** |
| 17 | * @var RevisionActionPermissions |
| 18 | */ |
| 19 | protected $permissions; |
| 20 | |
| 21 | /** |
| 22 | * @param ManagerGroup $storage |
| 23 | * @param TreeRepository $treeRepository |
| 24 | * @param RevisionActionPermissions $permissions |
| 25 | */ |
| 26 | public function __construct( |
| 27 | ManagerGroup $storage, |
| 28 | TreeRepository $treeRepository, |
| 29 | RevisionActionPermissions $permissions |
| 30 | ) { |
| 31 | parent::__construct( $storage, $treeRepository ); |
| 32 | $this->permissions = $permissions; |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Create a revision based on revisionId |
| 37 | * @param UUID|string $revId |
| 38 | * @return AbstractRevision |
| 39 | */ |
| 40 | abstract protected function createRevision( $revId ); |
| 41 | |
| 42 | /** |
| 43 | * Get the data for rendering single revision view |
| 44 | * @param string $revId |
| 45 | * @return FormatterRow|null |
| 46 | * @throws InvalidInputException |
| 47 | */ |
| 48 | public function getSingleViewResult( $revId ) { |
| 49 | if ( !$revId ) { |
| 50 | throw new InvalidParameterException( 'Missing revision' ); |
| 51 | } |
| 52 | $rev = $this->createRevision( $revId ); |
| 53 | if ( !$rev ) { |
| 54 | throw new InvalidInputException( 'Could not find revision: ' . $revId, 'missing-revision' ); |
| 55 | } |
| 56 | $this->loadMetadataBatch( [ $rev ] ); |
| 57 | return $this->buildResult( $rev, null ); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Get the data for rendering revisions diff view |
| 62 | * @param UUID $curId |
| 63 | * @param UUID|null $prevId |
| 64 | * @return FormatterRow[] |
| 65 | * @throws InvalidInputException |
| 66 | * @throws PermissionException |
| 67 | */ |
| 68 | public function getDiffViewResult( UUID $curId, UUID $prevId = null ) { |
| 69 | $cur = $this->createRevision( $curId ); |
| 70 | if ( !$cur ) { |
| 71 | throw new InvalidInputException( 'Could not find revision: ' . $curId, 'missing-revision' ); |
| 72 | } |
| 73 | if ( !$prevId ) { |
| 74 | $prevId = $cur->getPrevRevisionId(); |
| 75 | } |
| 76 | // @phan-suppress-next-line PhanTypeMismatchArgumentNullable |
| 77 | $prev = $this->createRevision( $prevId ); |
| 78 | if ( !$prev ) { |
| 79 | throw new InvalidInputException( |
| 80 | 'Could not find revision to compare against: ' . $curId->getAlphadecimal(), |
| 81 | 'missing-revision' |
| 82 | ); |
| 83 | } |
| 84 | if ( !$this->isComparable( $cur, $prev ) ) { |
| 85 | throw new InvalidInputException( 'Attempt to compare revisions of different types', 'revision-comparison' ); |
| 86 | } |
| 87 | |
| 88 | // Re-position old and new revisions if necessary |
| 89 | if ( |
| 90 | $cur->getRevisionId()->getTimestamp() > |
| 91 | $prev->getRevisionId()->getTimestamp() |
| 92 | ) { |
| 93 | $oldRev = $prev; |
| 94 | $newRev = $cur; |
| 95 | } else { |
| 96 | $oldRev = $cur; |
| 97 | $newRev = $prev; |
| 98 | } |
| 99 | |
| 100 | if ( |
| 101 | !$this->permissions->isAllowed( $oldRev, 'view' ) || |
| 102 | !$this->permissions->isAllowed( $newRev, 'view' ) |
| 103 | ) { |
| 104 | throw new PermissionException( 'Insufficient permission to compare revisions', 'insufficient-permission' ); |
| 105 | } |
| 106 | |
| 107 | $this->loadMetadataBatch( [ $oldRev, $newRev ] ); |
| 108 | |
| 109 | return [ |
| 110 | $this->buildResult( $newRev, null ), |
| 111 | $this->buildResult( $oldRev, null ), |
| 112 | ]; |
| 113 | } |
| 114 | |
| 115 | public function getUndoDiffResult( $startUndoId, $endUndoId ) { |
| 116 | $start = $this->createRevision( $startUndoId ); |
| 117 | if ( !$start ) { |
| 118 | throw new InvalidInputException( 'Could not find revision: ' . $startUndoId, 'missing-revision' ); |
| 119 | } |
| 120 | $end = $this->createRevision( $endUndoId ); |
| 121 | if ( !$end ) { |
| 122 | throw new InvalidInputException( 'Could not find revision: ' . $endUndoId, 'missing-revision' ); |
| 123 | } |
| 124 | |
| 125 | // the two revision must have the same revision type id |
| 126 | if ( !$start->getCollectionId()->equals( $end->getCollectionId() ) ) { |
| 127 | throw new InvalidInputException( 'start and end are not from the same set' ); |
| 128 | } |
| 129 | |
| 130 | $current = $start->getCollection()->getLastRevision(); |
| 131 | |
| 132 | if ( |
| 133 | !$this->permissions->isAllowed( $start, 'view' ) || |
| 134 | !$this->permissions->isAllowed( $end, 'view' ) || |
| 135 | !$this->permissions->isAllowed( $current, 'view' ) |
| 136 | ) { |
| 137 | throw new PermissionException( 'Insufficient permission to undo revisions', 'insufficient-permission' ); |
| 138 | } |
| 139 | |
| 140 | $this->loadMetadataBatch( [ $start, $end, $current ] ); |
| 141 | |
| 142 | return [ |
| 143 | $this->buildResult( $start, null ), |
| 144 | $this->buildResult( $end, null ), |
| 145 | $this->buildResult( $current, null ), |
| 146 | ]; |
| 147 | } |
| 148 | |
| 149 | public function isComparable( AbstractRevision $cur, AbstractRevision $prev ) { |
| 150 | if ( $cur->getRevisionType() == $prev->getRevisionType() ) { |
| 151 | return $cur->getCollectionId()->equals( $prev->getCollectionId() ); |
| 152 | } else { |
| 153 | return false; |
| 154 | } |
| 155 | } |
| 156 | } |