<?php

require_once 'formatters/LengthFormatter.php';

/**
 *
 * @package Airtime
 * @copyright 2010 Sourcefabric O.P.S.
 * @license http://www.gnu.org/licenses/gpl.txt
 */
class Application_Model_Block implements Application_Model_LibraryEditable
{
    /**
     * propel connection object.
     */
    private $con;

    /**
     * unique id for the block.
     */
    private $id;

    private $block;

    /**
     * info needed to insert a new block element.
     */
    private $blockItem = array(
            "id"         => "",
            "pos"        => "",
            "cliplength" => "",
            "cuein"      => "00:00:00",
            "cueout"     => "00:00:00",
            "fadein"     => "0.0",
            "fadeout"    => "0.0",
    		"crossfadeDuration" => 0
    );

    //using propel's phpNames.
    private $categories = array(
            "dc:title"       => "Name",
            "dc:creator"     => "Creator",
            "dc:description" => "Description",
            "dcterms:extent" => "Length"
    );

    private static $modifier2CriteriaMap = array(
            "contains"         => Criteria::ILIKE,
            "does not contain" => Criteria::NOT_ILIKE,
            "is"               => Criteria::EQUAL,
            "is not"           => Criteria::NOT_EQUAL,
            "starts with"      => Criteria::ILIKE,
            "ends with"        => Criteria::ILIKE,
            "is greater than"  => Criteria::GREATER_THAN,
            "is less than"     => Criteria::LESS_THAN,
            "is in the range"  => Criteria::CUSTOM);

    private static $criteria2PeerMap = array(
            0              => "Select criteria",
            "album_title"  => "DbAlbumTitle",
            "artist_name"  => "DbArtistName",
            "bit_rate"     => "DbBitRate",
            "bpm"          => "DbBpm",
            "composer"     => "DbComposer",
            "conductor"    => "DbConductor",
            "copyright"    => "DbCopyright",
            "cuein"        => "DbCuein",
            "cueout"       => "DbCueout",
            "encoded_by"   => "DbEncodedBy",
            "utime"        => "DbUtime",
            "mtime"        => "DbMtime",
            "lptime"       => "DbLPtime",
            "genre"        => "DbGenre",
            "info_url"     => "DbInfoUrl",
            "isrc_number"  => "DbIsrcNumber",
            "label"        => "DbLabel",
            "language"     => "DbLanguage",
            "length"       => "DbLength",
            "mime"         => "DbMime",
            "mood"         => "DbMood",
            "owner_id"     => "DbOwnerId",
            "replay_gain"  => "DbReplayGain",
            "sample_rate"  => "DbSampleRate",
            "track_title"  => "DbTrackTitle",
            "track_number" => "DbTrackNumber",
            "year"         => "DbYear"
    );

    public function __construct($id=null, $con=null)
    {
        if (isset($id)) {
            $this->block = CcBlockQuery::create()->findPk($id);

            if (is_null($this->block)) {
                throw new BlockNotFoundException();
            }
        } else {
            $this->block = new CcBlock();
            $this->block->setDbUTime(new DateTime("now", new DateTimeZone("UTC")));
            $this->block->save();
        }

        $this->blockItem["fadein"] = Application_Model_Preference::GetDefaultFadeIn();
        $this->blockItem["fadeout"] = Application_Model_Preference::GetDefaultFadeOut();
        $this->blockItem["crossfadeDuration"] = Application_Model_Preference::GetDefaultCrossfadeDuration();

        $this->con = isset($con) ? $con : Propel::getConnection(CcBlockPeer::DATABASE_NAME);
        $this->id = $this->block->getDbId();
    }

    /**
     * Return local ID of virtual file.
     *
     * @return int
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Rename stored virtual block
     *
     * @param string $p_newname
     */
    public function setName($p_newname)
    {
        $this->block->setDbName($p_newname);
        $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
        $this->block->save($this->con);
    }

    /**
     * Get mnemonic block name
     *
     * @return string
     */
    public function getName()
    {
        return $this->block->getDbName();
    }

    public function setDescription($p_description)
    {
        $this->block->setDbDescription($p_description);
        $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
        $this->block->save($this->con);
    }

    public function getDescription()
    {
        return $this->block->getDbDescription();
    }

    public function getCreator()
    {
        return $this->block->getCcSubjs()->getDbLogin();
    }

    public function getCreatorId()
    {
        return $this->block->getCcSubjs()->getDbId();
    }

    public function setCreator($p_id)
    {
        $this->block->setDbCreatorId($p_id);
        $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
        $this->block->save($this->con);
    }

    public function getLastModified($format = null)
    {
        return $this->block->getDbMtime($format);
    }

    public function getSize()
    {
        return $this->block->countCcBlockcontentss();
    }

    /**
     * Get the entire block as a two dimentional array, sorted in order of play.
     * @param boolean $filterFiles if this is true, it will only return files that has
     *             file_exists flag set to true
     * @return array
     */
    public function getContents($filterFiles=false)
    {
        Logging::info("Getting contents for block {$this->id}");
        
        $sql = <<<SQL
SELECT pc.id AS id,
       pc.position,
       pc.cliplength AS LENGTH,
       pc.cuein,
       pc.cueout,
       pc.fadein,
       pc.fadeout,
       pc.trackoffset,
       bl.type,
       f.LENGTH AS orig_length,
       f.id AS item_id,
       f.track_title,
       f.artist_name AS creator,
       f.file_exists AS EXISTS,
       f.filepath AS path,
       f.mime as mime
FROM cc_blockcontents AS pc
LEFT JOIN cc_files AS f ON pc.file_id=f.id
LEFT JOIN cc_block AS bl ON pc.block_id = bl.id
WHERE pc.block_id = :block_id

SQL;

        if ($filterFiles) {
            $sql .= <<<SQL
            AND f.file_exists = :file_exists
SQL;
        }
        $sql .= <<<SQL

ORDER BY pc.position
SQL;
        $params = array(':block_id'=>$this->id);
        if ($filterFiles) {
            $params[':file_exists'] = $filterFiles;
        }
        $rows = Application_Common_Database::prepareAndExecute($sql, $params);

        $offset = 0;
        foreach ($rows as &$row) {

            $clipSec = Application_Common_DateHelper::playlistTimeToSeconds($row['length']);
            
            $row['trackSec'] = $clipSec;
            
            $row['cueInSec'] = Application_Common_DateHelper::playlistTimeToSeconds($row['cuein']);
            $row['cueOutSec'] = Application_Common_DateHelper::playlistTimeToSeconds($row['cueout']);
            
            $trackoffset = $row['trackoffset'];
            $offset += $clipSec;
            $offset -= $trackoffset;
            $offset_cliplength = Application_Common_DateHelper::secondsToPlaylistTime($offset);

            //format the length for UI.
            $formatter = new LengthFormatter($row['length']);
            $row['length'] = $formatter->format();

            $formatter = new LengthFormatter($offset_cliplength);
            $row['offset'] = $formatter->format();

            //format the fades in format 00(.0)
            $fades = $this->getFadeInfo($row['position']);
            $row['fadein'] = $fades[0];
            $row['fadeout'] = $fades[1];
            
            // format the cues in format 00:00:00(.0)
            // we need to add the '.0' for cues and not fades
            // because propel takes care of this for us
            // (we use propel to fetch the fades)
            $row['cuein'] = str_pad(substr($row['cuein'], 0, 10), 10, '.0');
            $row['cueout'] = str_pad(substr($row['cueout'], 0, 10), 10, '.0');

            //format original length
            $formatter = new LengthFormatter($row['orig_length']);
            $row['orig_length'] = $formatter->format();

            // XSS exploit prevention
            $row["track_title"] = htmlspecialchars($row["track_title"]);
            $row["creator"] = htmlspecialchars($row["creator"]);
        }

        return $rows;
    }

    /**
     * The database stores fades in 00:00:00 Time format with optional millisecond resolution .000000
     * but this isn't practical since fades shouldn't be very long usuall 1 second or less. This function
     * will normalize the fade so that it looks like 00.000000 to the user.
     **/
    public function normalizeFade($fade)
    {
        //First get rid of the first six characters 00:00: which will be added back later for db update
        $fade = substr($fade, 6);

        //Second add .000000 if the fade does't have milliseconds format already
        $dbFadeStrPos = strpos( $fade, '.' );
        if ( $dbFadeStrPos === False )
            $fade .= '.000000';
        else
            while( strlen( $fade ) < 9 )
            $fade .= '0';

        //done, just need to set back the formated values
        return $fade;
    }

    public function getUnformatedLength()
    {
        $this->block->reload();
        if ($this->isStatic()) {
            $length = $this->block->getDbLength();
        } else {
            $length = $this->getDynamicBlockLength();
        }

        return $length;
    }

    public function getLength()
    {
        $this->block->reload();
        $prepend = "";
        if ($this->isStatic()) {
            $length = $this->block->getDbLength();
        } else {
            $length = $this->getDynamicBlockLength();
            if (!$this->hasItemLimit()) {
                $prepend = "~";
            }
        }
        $formatter = new LengthFormatter($length);
        $length = $prepend.$formatter->format();

        return $length;
    }

    public function getDynamicBlockLength()
    {
        list($value, $modifier) = $this->getLimitValueAndModifier();
        if ($modifier == "items") {
            $length = $value." "._("items");
        } else {
            $hour = "00";
            $mins = "00";
            if ($modifier == "minutes") {
                $mins = $value;
                if ($value >59) {
                    $hour  = intval($value/60);
                    $mins = $value%60;

                }
            } elseif ($modifier == "hours") {
                $mins = $value * 60;
                if ($mins >59) {
                    $hour  = intval($mins/60);
                    $hour  = str_pad($hour, 2, "0", STR_PAD_LEFT);
                    $mins = $mins%60;
                }
            }
            $hour   = str_pad($hour, 2, "0", STR_PAD_LEFT);
            $mins  = str_pad($mins, 2, "0", STR_PAD_LEFT);
            $length = $hour.":".$mins.":00";
        }

        return $length;
    }

    public function getLimitValueAndModifier()
    {
        $result = CcBlockcriteriaQuery::create()->filterByDbBlockId($this->id)
                ->filterByDbCriteria('limit')->findOne();
        $modifier = $result->getDbModifier();
        $value    = $result->getDbValue();

        return array($value, $modifier);
    }

    // this function returns sum of all track length under this block.
    public function getStaticLength()
    {
        $sql = <<<SQL
SELECT SUM(cliplength) AS LENGTH
FROM cc_blockcontents as bc
JOIN cc_files as f ON bc.file_id = f.id
WHERE block_id = :block_id
AND f.file_exists = true
SQL;
        $result = Application_Common_Database::prepareAndExecute($sql, array(':block_id'=>$this->id), 'all', PDO::FETCH_NUM);
        return $result[0][0];
    }

    private function insertBlockElement($info)
    {
        $row = new CcBlockcontents();
        $row->setDbBlockId($this->id);
        $row->setDbFileId($info["id"]);
        $row->setDbPosition($info["pos"]);
        $row->setDbCliplength($info["cliplength"]);
        $row->setDbCuein($info["cuein"]);
        $row->setDbCueout($info["cueout"]);
        $row->setDbFadein(Application_Common_DateHelper::secondsToPlaylistTime($info["fadein"]));
        $row->setDbFadeout(Application_Common_DateHelper::secondsToPlaylistTime($info["fadeout"]));
        $row->setDbTrackOffset($info["crossfadeDuration"]);
        $row->save($this->con);
        // above save result update on cc_block table on length column.
        // but $this->block doesn't get updated automatically
        // so we need to manually grab it again from DB so it has updated values
        // It is something to do FORMAT_ON_DEMAND( Lazy Loading )
        $this->block = CcBlockQuery::create()->findPK($this->id);
    }

    /*
     *
    */
    private function buildEntry($p_item, $pos)
    {
        $file = CcFilesQuery::create()->findPK($p_item, $this->con);

        if (isset($file) && $file->visible()) {
            $entry               = $this->blockItem;
            $entry["id"]         = $file->getDbId();
            $entry["pos"]        = $pos;
            $entry["cueout"]     = $file->getDbCueout();
            $entry["cuein"]     = $file->getDbCuein();

            $cue_out = Application_Common_DateHelper::calculateLengthInSeconds($entry['cueout']);
            $cue_in = Application_Common_DateHelper::calculateLengthInSeconds($entry['cuein']);
            $entry["cliplength"] = Application_Common_DateHelper::secondsToPlaylistTime($cue_out-$cue_in);

            return $entry;
        } else {
            throw new Exception("trying to add a file that does not exist.");
        }
    }

    public function isStatic()
    {
        return $this->block->getDbType() == "static";
    }

    /*
     * @param array $p_items
    *     an array of audioclips to add to the block
    * @param int|null $p_afterItem
    *     item which to add the new items after in the block, null if added to the end.
    * @param string (before|after) $addAfter
    *      whether to add the clips before or after the selected item.
    */
    public function addAudioClips($p_items, $p_afterItem=NULL, $addType = 'after')
    {
        $this->con->beginTransaction();
        $contentsToUpdate = array();

        try {

            if (is_numeric($p_afterItem)) {
                Logging::info("Finding block content item {$p_afterItem}");

                $afterItem = CcBlockcontentsQuery::create()->findPK($p_afterItem);
                $index = $afterItem->getDbPosition();
                Logging::info("index is {$index}");
                $pos = ($addType == 'after') ? $index + 1 : $index;

                $contentsToUpdate = CcBlockcontentsQuery::create()
                ->filterByDbBlockId($this->id)
                ->filterByDbPosition($pos, Criteria::GREATER_EQUAL)
                ->orderByDbPosition()
                ->find($this->con);

                Logging::info("Adding to block");
                Logging::info("at position {$pos}");
            } else {

                //add to the end of the block
                if ($addType == 'after') {
                    $pos = $this->getSize();
                }
                //add to the beginning of the block.
                else {
                    $pos = 0;

                    $contentsToUpdate = CcBlockcontentsQuery::create()
                    ->filterByDbBlockId($this->id)
                    ->orderByDbPosition()
                    ->find($this->con);
                }

                $contentsToUpdate = CcBlockcontentsQuery::create()
                ->filterByDbBlockId($this->id)
                ->filterByDbPosition($pos, Criteria::GREATER_EQUAL)
                ->orderByDbPosition()
                ->find($this->con);

                Logging::info("Adding to block");
                Logging::info("at position {$pos}");
            }
            
            foreach ($p_items as $ac) {
                //Logging::info("Adding audio file {$ac[0]}");
                try {
                    if (is_array($ac) && $ac[1] == 'audioclip') {
                        $res = $this->insertBlockElement($this->buildEntry($ac[0], $pos));

                        // update is_playlist flag in cc_files to indicate the
                        // file belongs to a playlist or block (in this case a block)
                        $db_file = CcFilesQuery::create()->findPk($ac[0], $this->con);
                        $db_file->setDbIsPlaylist(true)->save($this->con);

                        $pos = $pos + 1;
                    } elseif (!is_array($ac)) {
                        $res = $this->insertBlockElement($this->buildEntry($ac, $pos));
                        $pos = $pos + 1;

                        $db_file = CcFilesQuery::create()->findPk($ac, $this->con);
                        $db_file->setDbIsPlaylist(true)->save($this->con);
                    }
                } catch (Exception $e) {
                    Logging::info($e->getMessage());
                }
            }

            //reset the positions of the remaining items.
            for ($i = 0; $i < count($contentsToUpdate); $i++) {
                $contentsToUpdate[$i]->setDbPosition($pos);
                $contentsToUpdate[$i]->save($this->con);
                $pos = $pos + 1;
            }

            $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
            $this->block->save($this->con);

            $this->con->commit();

            $this->updateBlockLengthInAllPlaylist();

        } catch (Exception $e) {
            $this->con->rollback();
            throw $e;
        }
    }

    /**
     * Move audioClip to the new position in the block
     *
     * @param array $p_items
     *      array of unique ids of the selected items
     * @param int $p_afterItem
     *      unique id of the item to move the clip after
     */
    public function moveAudioClips($p_items, $p_afterItem=NULL)
    {
        $this->con->beginTransaction();

        try {

            $contentsToMove = CcBlockcontentsQuery::create()
            ->filterByDbId($p_items, Criteria::IN)
            ->orderByDbPosition()
            ->find($this->con);

            $otherContent = CcBlockcontentsQuery::create()
            ->filterByDbId($p_items, Criteria::NOT_IN)
            ->filterByDbBlockId($this->id)
            ->orderByDbPosition()
            ->find($this->con);

            $pos = 0;
            //moving items to beginning of the block.
            if (is_null($p_afterItem)) {
                Logging::info("moving items to beginning of block");

                foreach ($contentsToMove as $item) {
                    Logging::info("item {$item->getDbId()} to pos {$pos}");
                    $item->setDbPosition($pos);
                    $item->save($this->con);
                    $pos = $pos + 1;
                }
                foreach ($otherContent as $item) {
                    Logging::info("item {$item->getDbId()} to pos {$pos}");
                    $item->setDbPosition($pos);
                    $item->save($this->con);
                    $pos = $pos + 1;
                }
            } else {
                Logging::info("moving items after {$p_afterItem}");

                foreach ($otherContent as $item) {
                    Logging::info("item {$item->getDbId()} to pos {$pos}");
                    $item->setDbPosition($pos);
                    $item->save($this->con);
                    $pos = $pos + 1;

                    if ($item->getDbId() == $p_afterItem) {
                        foreach ($contentsToMove as $move) {
                            Logging::info("item {$move->getDbId()} to pos {$pos}");
                            $move->setDbPosition($pos);
                            $move->save($this->con);
                            $pos = $pos + 1;
                        }
                    }
                }
            }

            $this->con->commit();
        } catch (Exception $e) {
            $this->con->rollback();
            throw $e;
        }

        $this->block = CcBlockQuery::create()->findPK($this->id);
        $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
        $this->block->save($this->con);
    }

    /**
     * Remove audioClip from block
     *
     * @param array $p_items
     *         array of unique item ids to remove from the block..
     */
    public function delAudioClips($p_items)
    {

        $this->con->beginTransaction();

        try {

            // we need to get the file id of the item we are deleting
            // before the item gets deleted from the block
            $itemsToDelete = CcBlockcontentsQuery::create()
                ->filterByPrimaryKeys($p_items)
                ->filterByDbFileId(null, Criteria::NOT_EQUAL)
                ->find($this->con);

            CcBlockcontentsQuery::create()
            ->findPKs($p_items)
            ->delete($this->con);

            // now that the items have been deleted we can update the
            // is_playlist flag in cc_files
            Application_Model_StoredFile::setIsPlaylist($itemsToDelete, 'block', false);

            $contents = CcBlockcontentsQuery::create()
            ->filterByDbBlockId($this->id)
            ->orderByDbPosition()
            ->find($this->con);

            //reset the positions of the remaining items.
            for ($i = 0; $i < count($contents); $i++) {
                $contents[$i]->setDbPosition($i);
                $contents[$i]->save($this->con);
            }

            $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
            $this->block->save($this->con);

            $this->con->commit();

            $this->updateBlockLengthInAllPlaylist();

        } catch (Exception $e) {
            $this->con->rollback();
            throw $e;
        }
    }

    public function getFadeInfo($pos)
    {
        //Logging::info("Getting fade info for pos {$pos}");

        $row = CcBlockcontentsQuery::create()
        ->joinWith(CcFilesPeer::OM_CLASS)
        ->filterByDbBlockId($this->id)
        ->filterByDbPosition($pos)
        ->findOne();



        //Propel returns values in form 00.000000 format which is for only seconds.
        //We only want to display 1 decimal
        $fadeIn = substr($row->getDbFadein(), 0, 4);
        $fadeOut = substr($row->getDbFadeout(), 0, 4);

        return array($fadeIn, $fadeOut);
    }
    
    /*
     * create a crossfade from item in cc_playlist_contents with $id1 to item $id2.
    *
    * $fadeOut length of fade out in seconds if $id1
    * $fadeIn length of fade in in seconds of $id2
    * $offset time in seconds from end of $id1 that $id2 will begin to play.
    */
    public function createCrossfade($id1, $fadeOut, $id2, $fadeIn, $offset)
    {
    	$this->con->beginTransaction();
    	
    	if (!isset($offset)) {
    		$offset = Application_Model_Preference::GetDefaultCrossfadeDuration();
    	}
    	 
    	try {
    		if (isset($id1)) {
    			$this->changeFadeInfo($id1, null, $fadeOut);
    		}
    		if (isset($id2)) {
    			$this->changeFadeInfo($id2, $fadeIn, null, $offset);
    		}
    
    		$this->con->commit();
    
    	} catch (Exception $e) {
    		$this->con->rollback();
    		throw $e;
    	}
    }

    /**
    * Change fadeIn and fadeOut values for block Element
    *
    * @param int $pos
    *         position of audioclip in block
    * @param string $fadeIn
    *         new value in ss.ssssss or extent format
    * @param string $fadeOut
    *         new value in ss.ssssss or extent format
    * @return boolean
    */
    public function changeFadeInfo($id, $fadeIn, $fadeOut, $offset=null)
    {
        //See issue CC-2065, pad the fadeIn and fadeOut so that it is TIME compatable with the DB schema
        //For the top level PlayList either fadeIn or fadeOut will sometimes be Null so need a gaurd against
        //setting it to nonNull for checks down below
        $fadeIn = $fadeIn?'00:00:'.$fadeIn:$fadeIn;
        $fadeOut = $fadeOut?'00:00:'.$fadeOut:$fadeOut;

        $this->con->beginTransaction();

        try {
            $row = CcBlockcontentsQuery::create()->findPK($id);

            if (is_null($row)) {
                throw new Exception("Block item does not exist.");
            }

            $clipLength = $row->getDbCliplength();

            if (!is_null($fadeIn)) {

                $sql = "SELECT :fade_in::INTERVAL > :clip_length::INTERVAL";
                $params = array(
                    ':fade_in' => $fadeIn,
                    ':clip_length' => $clipLength
                );
                
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    //"Fade In can't be larger than overall playlength.";
                    $fadeIn = $clipLength;
                }
                $row->setDbFadein($fadeIn);
                
                if (!is_null($offset)) {
                	$row->setDbTrackOffset($offset);
                	Logging::info("Setting offset {$offset} on item {$id}");
                	$row->save($this->con);
                }
                
            }
            if (!is_null($fadeOut)) {

                $sql = "SELECT :fade_out::INTERVAL > :clip_length::INTERVAL";
                $params = array(
                    ':fade_out' => $fadeOut,
                    ':clip_length' => $clipLength
                );
                
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    //"Fade Out can't be larger than overall playlength.";
                    $fadeOut = $clipLength;
                }
                $row->setDbFadeout($fadeOut);
            }

            $row->save($this->con);
            $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
            $this->block->save($this->con);

            $this->con->commit();
        } catch (Exception $e) {
            $this->con->rollback();
            throw $e;
        }

        return array("fadeIn" => $fadeIn, "fadeOut" => $fadeOut);
    }

    public function setfades($fadein, $fadeout)
    {
        if (isset($fadein)) {
            Logging::info("Setting block fade in {$fadein}");
            $row = CcBlockcontentsQuery::create()
            ->filterByDbBlockId($this->id)
            ->filterByDbPosition(0)
            ->findOne($this->con);

            $this->changeFadeInfo($row->getDbId(), $fadein, null);
        }

        if (isset($fadeout)) {
            Logging::info("Setting block fade out {$fadeout}");
            $row = CcBlockcontentsQuery::create()
            ->filterByDbBlockId($this->id)
            ->filterByDbPosition($this->getSize()-1)
            ->findOne($this->con);

            $this->changeFadeInfo($row->getDbId(), null, $fadeout);
        }
    }

    /**
    * Change cueIn/cueOut values for block element
    *
    * @param int $pos
    *         position of audioclip in block
    * @param string $cueIn
    *         new value in ss.ssssss or extent format
    * @param string $cueOut
    *         new value in ss.ssssss or extent format
    * @return boolean or pear error object
    */
    public function changeClipLength($id, $cueIn, $cueOut)
    {
        $this->con->beginTransaction();

        $errArray= array();

        try {
            if (is_null($cueIn) && is_null($cueOut)) {
                $errArray["error"] = _("Cue in and cue out are null.");

                return $errArray;
            }

            $row = CcBlockcontentsQuery::create()
            ->joinWith(CcFilesPeer::OM_CLASS)
            ->filterByPrimaryKey($id)
            ->findOne($this->con);

            if (is_null($row)) {
                throw new Exception("Block item does not exist.");
            }

            $oldCueIn  = $row->getDBCuein();
            $oldCueOut = $row->getDbCueout();
            $fadeIn    = $row->getDbFadein();
            $fadeOut   = $row->getDbFadeout();

            $file = $row->getCcFiles($this->con);
            $origLength = $file->getDbLength();

            if (!is_null($cueIn) && !is_null($cueOut)) {

                if ($cueOut === "") {
                    $cueOut = $origLength;
                }

                $sql = "SELECT :cue_out::INTERVAL > :orig_length::INTERVAL";
                $params = array(
                    ':cue_out' => $cueOut,
                    ':orig_length' => $origLength
                );
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    $errArray["error"] = _("Can't set cue out to be greater than file length.");
                    return $errArray;
                }

                $sql = "SELECT :cue_in::INTERVAL > :cue_out::INTERVAL";
                $params = array(
                    ':cue_in' => $cueIn,
                    ':cue_out' => $cueOut
                );
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    $errArray["error"] = _("Can't set cue in to be larger than cue out.");
                    return $errArray;
                }

                $sql = "SELECT :cue_out::INTERVAL - :cue_in::INTERVAL";
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                $cliplength = $result;

                $row->setDbCuein($cueIn);
                $row->setDbCueout($cueOut);
                $row->setDBCliplength($cliplength);

            } elseif (!is_null($cueIn)) {

                $sql = "SELECT :cue_in::INTERVAL > :old_cue_out::INTERVAL";
                $params = array(
                    ':cue_in' => $cueIn,
                    ':old_cue_out' => $oldCueOut
                );
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    $errArray["error"] = _("Can't set cue in to be larger than cue out.");
                    return $errArray;
                }

                $sql = "SELECT :old_cue_out::INTERVAL - :cue_in::INTERVAL";
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                $cliplength = $result;

                $row->setDbCuein($cueIn);
                $row->setDBCliplength($cliplength);
                
            } elseif (!is_null($cueOut)) {

                if ($cueOut === "") {
                    $cueOut = $origLength;
                }

                $sql = "SELECT :cue_out::INTERVAL > :orig_length::INTERVAL";
                $params = array(
                    ':cue_out' => $cueOut,
                    ':orig_length' => $origLength
                );
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    $errArray["error"] = _("Can't set cue out to be greater than file length.");
                    return $errArray;
                }

                $sql = "SELECT :cue_out::INTERVAL < :old_cue_in::INTERVAL";
                $params = array(
                    ':cue_out' => $cueOut,
                    ':old_cue_in' => $oldCueIn
                );
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                if ($result) {
                    $errArray["error"] = _("Can't set cue out to be smaller than cue in.");
                    return $errArray;
                }

                $sql = "SELECT :cue_out::INTERVAL - :old_cue_in::INTERVAL";
                $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
                $cliplength = $result;

                $row->setDbCueout($cueOut);
                $row->setDBCliplength($cliplength);
            }

            $cliplength = $row->getDbCliplength();

            $sql = "SELECT :fade_in::INTERVAL > :clip_length::INTERVAL";
            $params = array(
                ':fade_in' => $fadeIn,
                ':clip_length' => $cliplength
            );
            $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
            if ($result) {
                $fadeIn = $cliplength;
                $row->setDbFadein($fadeIn);
            }

            $sql = "SELECT :fade_out::INTERVAL > :clip_length::INTERVAL";
            $params = array(
                ':fade_out' => $fadeOut,
                ':clip_length' => $cliplength
            );
            $result = Application_Common_Database::prepareAndExecute($sql, $params, 'column');
            if ($result) {
                $fadeOut = $cliplength;
                $row->setDbFadein($fadeOut);
            }

            $row->save($this->con);
            $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
            $this->block->save($this->con);

            $this->con->commit();
        } catch (Exception $e) {
            $this->con->rollback();
            throw $e;
        }

        return array("cliplength"=> $cliplength, "cueIn"=> $cueIn, "cueOut"=> $cueOut, "length"=> $this->getUnformatedLength(),
        "fadeIn"=> $fadeIn, "fadeOut"=> $fadeOut);
    }

    public function getAllPLMetaData()
    {
        $categories = $this->categories;
        $md = array();

        foreach ($categories as $key => $val) {
            $method = 'get' . $val;
            $md[$key] = $this->$method();
        }

        return $md;
    }

    public function getMetaData($category)
    {
        $cat = $this->categories[$category];
        $method = 'get' . $cat;

        return $this->$method();
    }

    public function setMetadata($category, $value)
    {
        $cat = $this->categories[$category];

        $method = 'set' . $cat;
        $this->$method($value);
    }

    public static function getBlockCount()
    {
         $sql = 'SELECT count(*) as cnt FROM cc_playlist';
         
         $res = Application_Common_Database::prepareAndExecute($sql, array(), 
         		Application_Common_Database::COLUMN);

         return $res;
     }

    /**
    * Delete the file from all blocks.
    * @param string $p_fileId
    */
    public static function DeleteFileFromAllBlocks($p_fileId)
    {
         CcBlockcontentsQuery::create()->filterByDbFileId($p_fileId)->delete();
    }

    /**
    * Delete blocks that match the ids..
    * @param array $p_ids
    */
    public static function deleteBlocks($p_ids, $p_userId)
    {
        $userInfo = Zend_Auth::getInstance()->getStorage()->read();
        $user = new Application_Model_User($userInfo->id);
        $isAdminOrPM = $user->isUserType(array(UTYPE_ADMIN, UTYPE_PROGRAM_MANAGER));

        // get only the files from the blocks
        // we are about to delete
        $itemsToDelete = CcBlockcontentsQuery::create()
            ->filterByDbBlockId($p_ids)
            ->filterByDbFileId(null, Criteria::NOT_EQUAL)
            ->find();

        $updateIsPlaylistFlag = false;

        if (!$isAdminOrPM) {
            $leftOver = self::blocksNotOwnedByUser($p_ids, $p_userId);

            if (count($leftOver) == 0) {
                CcBlockQuery::create()->findPKs($p_ids)->delete();
                $updateIsPlaylistFlag = true;
            } else {
                throw new BlockNoPermissionException;
            }
        } else {
            CcBlockQuery::create()->findPKs($p_ids)->delete();
            $updateIsPlaylistFlag = true;
        }
        
        if ($updateIsPlaylistFlag) {
            // update is_playlist flag in cc_files
            Application_Model_StoredFile::setIsPlaylist(
                $itemsToDelete,
                'block',
                false
            );
        }
    }

    // This function returns that are not owen by $p_user_id among $p_ids
    private static function blocksNotOwnedByUser($p_ids, $p_userId)
    {
        $ownedByUser = CcBlockQuery::create()->filterByDbCreatorId($p_userId)->find()->getData();
        $selectedPls = $p_ids;
        $ownedPls = array();
        foreach ($ownedByUser as $pl) {
            if (in_array($pl->getDbId(), $selectedPls)) {
                $ownedPls[] = $pl->getDbId();
            }
        }

        $leftOvers = array_diff($selectedPls, $ownedPls);

        return $leftOvers;
    }

    /**
    * Delete all files from block
    */
    public function deleteAllFilesFromBlock()
    {
        // get only the files from the playlist
        // we are about to clear out
        $itemsToDelete = CcBlockcontentsQuery::create()
            ->filterByDbBlockId($this->id)
            ->filterByDbFileId(null, Criteria::NOT_EQUAL)
            ->find();

        CcBlockcontentsQuery::create()->findByDbBlockId($this->id)->delete();

        // update is_playlist flag in cc_files
        Application_Model_StoredFile::setIsPlaylist(
            $itemsToDelete,
            'block',
            false
        );

        //$this->block->reload();
        $this->block->setDbMtime(new DateTime("now", new DateTimeZone("UTC")));
        $this->block->save($this->con);
        $this->con->commit();
    }

    // smart block functions start
    public function shuffleSmartBlock()
    {
        // if it here that means it's static pl
        $this->saveType("static");
        $contents = CcBlockcontentsQuery::create()
        ->filterByDbBlockId($this->id)
        ->orderByDbPosition()
        ->find();
        $shuffledPos = range(0, count($contents)-1);
        shuffle($shuffledPos);
        foreach ($contents as $item) {
            $item->setDbPosition(array_shift($shuffledPos));
            $item->save();
        }

        return array("result"=>0);
    }

    public function saveType($p_blockType)
    {
        // saving dynamic/static flag
        CcBlockQuery::create()->findPk($this->id)->setDbType($p_blockType)->save();
    }

    public function setLength($value)
    {
        $this->block->setDbLength($value);
        $this->block->save($this->con);
        $this->updateBlockLengthInAllPlaylist();
    }


    /**
     * Saves smart block criteria
     * @param array $p_criteria
     */
    public function saveSmartBlockCriteria($p_criteria)
    {
        $data = $this->organizeSmartPlyalistCriteria($p_criteria);
        // saving dynamic/static flag
        $blockType = $data['etc']['sp_type'] == 0 ? 'static':'dynamic';
        $this->saveType($blockType);
        $this->storeCriteriaIntoDb($data);
        
        // if the block is dynamic, put null to the length
        // as it cannot be calculated
        if ($blockType == 'dynamic') {
            if ($this->hasItemLimit()) {
                $this->setLength(null);
            } else {
                $this->setLength($this->getDynamicBlockLength());
            }
        } else {
            $length = $this->getStaticLength();
            if (!$length) {
                $length = "00:00:00";
            }
            $this->setLength($length);
        }

        $this->updateBlockLengthInAllPlaylist();
    }

    public function hasItemLimit()
    {
        list($value, $modifier) = $this->getLimitValueAndModifier();
        return ($modifier == 'items');
    }

    public function storeCriteriaIntoDb($p_criteriaData)
    {
        // delete criteria under $p_blockId
        CcBlockcriteriaQuery::create()->findByDbBlockId($this->id)->delete();
        //Logging::info($p_criteriaData);
        //insert modifier rows
        if (isset($p_criteriaData['criteria'])) {
            $critKeys = array_keys($p_criteriaData['criteria']);
            for ($i = 0; $i < count($critKeys); $i++) {
                foreach ($p_criteriaData['criteria'][$critKeys[$i]] as $d) {
                    $qry = new CcBlockcriteria();
                    $qry->setDbCriteria($d['sp_criteria_field'])
                    ->setDbModifier($d['sp_criteria_modifier'])
                    ->setDbValue($d['sp_criteria_value'])
                    ->setDbBlockId($this->id);

                    if (isset($d['sp_criteria_extra'])) {
                        $qry->setDbExtra($d['sp_criteria_extra']);
                    }
                    $qry->save();
                }
            }
        }

        // insert limit info
        $qry = new CcBlockcriteria();
        $qry->setDbCriteria("limit")
        ->setDbModifier($p_criteriaData['etc']['sp_limit_options'])
        ->setDbValue($p_criteriaData['etc']['sp_limit_value'])
        ->setDbBlockId($this->id)
        ->save();
        
        // insert repeate track option
        $qry = new CcBlockcriteria();
        $qry->setDbCriteria("repeat_tracks")
        ->setDbModifier("N/A")
        ->setDbValue($p_criteriaData['etc']['sp_repeat_tracks'])
        ->setDbBlockId($this->id)
        ->save();
    }

    /**
     * generate list of tracks. This function saves creiteria and generate
     * tracks.
     * @param array $p_criteria
     */
    public function generateSmartBlock($p_criteria, $returnList=false)
    {
        $this->saveSmartBlockCriteria($p_criteria);
        $insertList = $this->getListOfFilesUnderLimit();
        $this->deleteAllFilesFromBlock();
        // constrcut id array
        $ids = array();
        foreach ($insertList as $ele) {
            $ids[] = $ele['id'];
        }
        $this->addAudioClips(array_values($ids));
        // update length in playlist contents.
        $this->updateBlockLengthInAllPlaylist();

        return array("result"=>0);
    }

    public function updateBlockLengthInAllPlaylist()
    {
        $blocks = CcPlaylistcontentsQuery::create()->filterByDbBlockId($this->id)->find();
        $blocks->getFirst();
        $iterator = $blocks->getIterator();
        while ($iterator->valid()) {
            $length = $this->getUnformatedLength();
            if (!preg_match("/^[0-9]{2}:[0-9]{2}:[0-9]{2}/", $length)) {
                $iterator->current()->setDbClipLength(null);
            } else {
                $iterator->current()->setDbClipLength($length);
            }
            $iterator->current()->save();
            $iterator->next();
        }
    }

    public function getListOfFilesUnderLimit()
    {
        $info       = $this->getListofFilesMeetCriteria();
        $files      = $info['files'];
        $limit      = $info['limit'];
        $repeat     = $info['repeat_tracks'];

        $insertList = array();
        $totalTime  = 0;
        $totalItems = 0;

        // this moves the pointer to the first element in the collection
        $files->getFirst();
        $iterator = $files->getIterator();
        
        $isBlockFull = false;
        
        while ($iterator->valid()) {
        	
            $id = $iterator->current()->getDbId();
            $fileLength = $iterator->current()->getCueLength();
            $length = Application_Common_DateHelper::calculateLengthInSeconds($fileLength);
            $insertList[] = array('id'=>$id, 'length'=>$length);
            $totalTime += $length;
            $totalItems++;
            
            if ((!is_null($limit['items']) && $limit['items'] == count($insertList)) || $totalItems > 500 || $totalTime > $limit['time']) {
                $isBlockFull = true;
                break;
            }

            $iterator->next();
        }
        
        $sizeOfInsert = count($insertList);
        
        // if block is not full and repeat_track is check, fill up more
        while (!$isBlockFull && $repeat == 1 && $sizeOfInsert > 0) {
        	Logging::debug("adding repeated tracks.");
        	Logging::debug("total time = " . $totalTime);
        	
            $randomEleKey = array_rand(array_slice($insertList, 0, $sizeOfInsert));
            $insertList[] = $insertList[$randomEleKey];
            $totalTime += $insertList[$randomEleKey]['length'];
            $totalItems++;
            
            if ((!is_null($limit['items']) && $limit['items'] == count($insertList)) || $totalItems > 500 || $totalTime > $limit['time']) {
                break;
            }
        }

        return $insertList;
    }

    public function getCriteria()
    {
        $criteriaOptions = array(
            0              => _("Select criteria"),
            "album_title"  => _("Album"),
            "bit_rate"     => _("Bit Rate (Kbps)"),
            "bpm"          => _("BPM"),
            "composer"     => _("Composer"),
            "conductor"    => _("Conductor"),
            "copyright"    => _("Copyright"),
            "cuein"        => _("Cue In"),
            "cueout"       => _("Cue Out"),
            "artist_name"  => _("Creator"),
            "encoded_by"   => _("Encoded By"),
            "genre"        => _("Genre"),
            "isrc_number"  => _("ISRC"),
            "label"        => _("Label"),
            "language"     => _("Language"),
            "mtime"        => _("Last Modified"),
            "lptime"       => _("Last Played"),
            "length"       => _("Length"),
            "mime"         => _("Mime"),
            "mood"         => _("Mood"),
            "owner_id"     => _("Owner"),
            "replay_gain"  => _("Replay Gain"),
            "sample_rate"  => _("Sample Rate (kHz)"),
            "track_title"  => _("Title"),
            "track_number" => _("Track Number"),
            "utime"        => _("Uploaded"),
            "info_url"     => _("Website"),
            "year"         => _("Year")
        );

        $modifierOptions = array(
            "0"                => _("Select modifier"),
            "contains"         => _("contains"),
            "does not contain" => _("does not contain"),
            "is"               => _("is"),
            "is not"           => _("is not"),
            "starts with"      => _("starts with"),
            "ends with"        => _("ends with"),
            "is"              => _("is"),
            "is not"          => _("is not"),
            "is greater than" => _("is greater than"),
            "is less than"    => _("is less than"),
            "is in the range" => _("is in the range")
        );

        // Load criteria from db
        $out = CcBlockcriteriaQuery::create()->orderByDbCriteria()->findByDbBlockId($this->id);
        $storedCrit = array();

        foreach ($out as $crit) {
            $criteria = $crit->getDbCriteria();
            $modifier = $crit->getDbModifier();
            $value = htmlspecialchars($crit->getDbValue());
            $extra = $crit->getDbExtra();

            if ($criteria == "limit") {
                $storedCrit["limit"] = array(
                    "value"=>$value,
                    "modifier"=>$modifier,
                    "display_modifier"=>_($modifier));
            } else if($criteria == "repeat_tracks") {
                $storedCrit["repeat_tracks"] = array("value"=>$value);
            } else {
                $storedCrit["crit"][$criteria][] = array(
                    "criteria"=>$criteria,
                    "value"=>$value,
                    "modifier"=>$modifier,
                    "extra"=>$extra,
                    "display_name"=>$criteriaOptions[$criteria],
                    "display_modifier"=>$modifierOptions[$modifier]);
            }
        }

        return $storedCrit;

    }

    // this function return list of propel object
    public function getListofFilesMeetCriteria()
    {
        $storedCrit = $this->getCriteria();

        $qry = CcFilesQuery::create();
        $qry->useFkOwnerQuery("subj", "left join");

        if (isset($storedCrit["crit"])) {
            foreach ($storedCrit["crit"] as $crit) {
                $i = 0;
                foreach ($crit as $criteria) {
                    //$spCriteriaPhpName = self::$criteria2PeerMap[$criteria['criteria']];
                    $spCriteria = $criteria['criteria'];
                    $spCriteriaModifier = $criteria['modifier'];

                    $column = CcFilesPeer::getTableMap()->getColumnByPhpName(self::$criteria2PeerMap[$spCriteria]);
                    // if the column is timestamp, convert it into UTC
                    if ($column->getType() == PropelColumnTypes::TIMESTAMP) {
                        $spCriteriaValue = Application_Common_DateHelper::ConvertToUtcDateTimeString($criteria['value']);
                        /* Check if only a date was supplied and trim
                         * the time after it is converted to UTC time
                         */
                        if (strlen($criteria['value']) <= 10) {
                            //extract date only from timestamp in db
                            $spCriteria = 'date('.$spCriteria.')';
                            $spCriteriaValue = substr($spCriteriaValue, 0, 10);
                        }

                        if (isset($criteria['extra'])) {
                            $spCriteriaExtra = Application_Common_DateHelper::ConvertToUtcDateTimeString($criteria['extra']);
                            if (strlen($criteria['extra']) <= 10) {
                                $spCriteriaExtra = substr($spCriteriaExtra, 0, 10);
                            }
                        }
                    } elseif ($spCriteria == "bit_rate" || $spCriteria == 'sample_rate') {
                        // multiply 1000 because we store only number value
                        // e.g 192kps is stored as 192000
                        $spCriteriaValue = $criteria['value']*1000;
                        if (isset($criteria['extra'])) {
                            $spCriteriaExtra = $criteria['extra']*1000;
                        }
                     /*
                     * If user is searching for an exact match of length we need to
                     * search as if it starts with the specified length because the
                     * user only sees the rounded version (i.e. 4:02.7 is 4:02.761625
                     * in the database)
                     */
                    } elseif (in_array($spCriteria, array('length', 'cuein', 'cueout')) && $spCriteriaModifier == "is") {
                        $spCriteriaModifier = "starts with";
                        $spCriteria = $spCriteria.'::text';
                        $spCriteriaValue = $criteria['value'];
                    } else {
                        /* Propel does not escape special characters properly when using LIKE/ILIKE
                         * We have to add extra slashes in these cases
                         */
                        $tempModifier = trim(self::$modifier2CriteriaMap[$spCriteriaModifier]);
                        if ($tempModifier == 'ILIKE') {
                            $spCriteriaValue = addslashes($criteria['value']);
                            // addslashes() does not esapce '%' so we have to do it manually
                            $spCriteriaValue = str_replace('%', '\%', $spCriteriaValue);
                        } else {
                            $spCriteriaValue = ($criteria['value']);
                        }

                        $spCriteriaExtra = $criteria['extra'];
                    }

                    if ($spCriteriaModifier == "starts with") {
                        $spCriteriaValue = "$spCriteriaValue%";
                    } elseif ($spCriteriaModifier == "ends with") {
                        $spCriteriaValue = "%$spCriteriaValue";
                    } elseif ($spCriteriaModifier == "contains" || $spCriteriaModifier == "does not contain") {
                        $spCriteriaValue = "%$spCriteriaValue%";
                    } elseif ($spCriteriaModifier == "is in the range") {
                        $spCriteriaValue = "$spCriteria >= '$spCriteriaValue' AND $spCriteria <= '$spCriteriaExtra'";
                    }

                    $spCriteriaModifier = self::$modifier2CriteriaMap[$spCriteriaModifier];

                    try {
                        if ($spCriteria == "owner_id") {
                            $spCriteria = "subj.login";
                        }
                        if ($i > 0) {
                            $qry->addOr($spCriteria, $spCriteriaValue, $spCriteriaModifier);
                        } else {
                            $qry->add($spCriteria, $spCriteriaValue, $spCriteriaModifier);
                        }
                        
                        if ($spCriteriaModifier == Criteria::NOT_ILIKE || $spCriteriaModifier == Criteria::NOT_EQUAL) {
                            $qry->addOr($spCriteria, null, Criteria::ISNULL);
                        }
                    } catch (Exception $e) {
                        Logging::info($e);
                    }
                    $i++;
                }
            }
            
            // check if file exists
            $qry->add("file_exists", "true", Criteria::EQUAL);
            $qry->add("hidden", "false", Criteria::EQUAL);
            $qry->addAscendingOrderByColumn('random()');
        }
        // construct limit restriction
        $limits = array();
        
        if (isset($storedCrit['limit'])) {
            if ($storedCrit['limit']['modifier'] == "items") {
                $limits['time'] = 1440 * 60;
                $limits['items'] = $storedCrit['limit']['value'];
            } else {
                $limits['time'] = $storedCrit['limit']['modifier'] == "hours" ?
                    intval(floatval($storedCrit['limit']['value']) * 60 * 60) :
                    intval($storedCrit['limit']['value'] * 60);
                $limits['items'] = null;
            }
        }
        
        $repeatTracks = 0;
        if (isset($storedCrit['repeat_tracks'])) {
            $repeatTracks = $storedCrit['repeat_tracks']['value'];
        }
        
        try {
            $out = $qry->setFormatter(ModelCriteria::FORMAT_ON_DEMAND)->find();

            return array("files"=>$out, "limit"=>$limits, "repeat_tracks"=> $repeatTracks, "count"=>$out->count());
        } catch (Exception $e) {
            Logging::info($e);
        }
    }

    public static function organizeSmartPlyalistCriteria($p_criteria)
    {
        $fieldNames = array('sp_criteria_field', 'sp_criteria_modifier', 'sp_criteria_value', 'sp_criteria_extra');
        $output = array();
        foreach ($p_criteria as $ele) {

            $index = strrpos($ele['name'], '_');

            /* Strip field name of modifier index
             * Ex: sp_criteria_field_0_0 -> sp_criteria_field_0
             */
            $fieldName = substr($ele['name'], 0, $index);

            // Get criteria row index.
            $tempName = $ele['name'];
            // Get the last digit in the field name
            preg_match('/^\D*(?=\d)/', $tempName, $r);
            if (isset($r[0])) {
                $critIndexPos = strlen($r[0]);
                $critIndex = $tempName[$critIndexPos];
            }
            $lastChar = substr($ele['name'], -1);

            // If lastChar is an integer we should strip it off
            if (!preg_match("/^[a-zA-Z]$/", $lastChar)) {
                /* Strip field name of criteria index
                 * Ex: sp_criteria_field_0 -> sp_criteria_field
                 * We do this to check if the field name is a criteria
                 * or the block type
                 */
                $n = strrpos($fieldName, '_');
                $fieldName = substr($fieldName, 0, $n);
            }

            if (in_array($fieldName, $fieldNames)) {
                $output['criteria'][$critIndex][$lastChar][$fieldName] = trim($ele['value']);
            } else {
                $output['etc'][$ele['name']] = $ele['value'];
            }
        }
        
        return $output;
    }
    public static function getAllBlockFiles()
    {
        $sql = <<<SQL
SELECT distinct(file_id)
FROM cc_blockcontents
SQL;
       
        $files = Application_Common_Database::prepareAndExecute($sql, array());
        
        $real_files = array();
        foreach ($files as $f) {
            $real_files[] = $f['file_id'];
        }
        return $real_files;
    }
    // smart block functions end
}

class BlockNotFoundException extends Exception {}
class BlockNoPermissionException extends Exception {}
class BlockOutDatedException extends Exception {}
class BlockDyanmicException extends Exception {}
