<?php
/*
 *  $Id$
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\DBAL\Schema\Visitor;

use Doctrine\DBAL\Platforms\AbstractPlatform,
    Doctrine\DBAL\Schema\Table,
    Doctrine\DBAL\Schema\Schema,
    Doctrine\DBAL\Schema\Column,
    Doctrine\DBAL\Schema\ForeignKeyConstraint,
    Doctrine\DBAL\Schema\Constraint,
    Doctrine\DBAL\Schema\Sequence,
    Doctrine\DBAL\Schema\Index;

class CreateSchemaSqlCollector implements Visitor
{
    /**
     * @var array
     */
    private $_createTableQueries = array();

    /**
     * @var array
     */
    private $_createSequenceQueries = array();

    /**
     * @var array
     */
    private $_createFkConstraintQueries = array();

    /**
     *
     * @var \Doctrine\DBAL\Platforms\AbstractPlatform
     */
    private $_platform = null;

    /**
     * @param AbstractPlatform $platform
     */
    public function __construct(AbstractPlatform $platform)
    {
        $this->_platform = $platform;
    }

    /**
     * @param Schema $schema
     */
    public function acceptSchema(Schema $schema)
    {

    }

    /**
     * Generate DDL Statements to create the accepted table with all its dependencies.
     *
     * @param Table $table
     */
    public function acceptTable(Table $table)
    {
        $options = $table->getOptions();
        $options['uniqueConstraints'] = array();
        $options['indexes'] = array();
        $options['primary'] = array();

        foreach($table->getIndexes() AS $index) {
            /* @var $index Index */
            if(!$index->isPrimary() && !$index->isUnique()) {
                $options['indexes'][$index->getName()] = $index->getColumns();
            } else {
                if($index->isPrimary()) {
                    $options['primary'] = $index->getColumns();
                } else {
                    $options['uniqueConstraints'][$index->getName()] = $index->getColumns();
                }
            }
        }

        $columns = array();
        foreach($table->getColumns() AS $column) {
            /* @var \Doctrine\DBAL\Schema\Column $column */
            $columnData = array();
            $columnData['name'] = $column->getName();
            $columnData['type'] = $column->getType();
            $columnData['length'] = $column->getLength();
            $columnData['notnull'] = $column->getNotNull();
            $columnData['unique'] = ($column->hasPlatformOption("unique"))?$column->getPlatformOption('unique'):false;
            $columnData['version'] = ($column->hasPlatformOption("version"))?$column->getPlatformOption('version'):false;
            if(strtolower($columnData['type']) == "string" && $columnData['length'] === null) {
                $columnData['length'] = 255;
            }
            $columnData['precision'] = $column->getPrecision();
            $columnData['scale'] = $column->getScale();
            $columnData['default'] = $column->getDefault();
            // TODO: Fixed? Unsigned?

            if(in_array($column->getName(), $options['primary'])) {
                $columnData['primary'] = true;

                if($table->isIdGeneratorIdentity()) {
                    $columnData['autoincrement'] = true;
                }
            }

            $columns[$columnData['name']] = $columnData;
        }

        $this->_createTableQueries = array_merge($this->_createTableQueries,
            $this->_platform->getCreateTableSql($table->getName(), $columns, $options)
        );
    }

    public function acceptColunn(Table $table, Column $column)
    {
        
    }

    /**
     * @param Table $localTable
     * @param ForeignKeyConstraint $fkConstraint
     */
    public function acceptForeignKey(Table $localTable, ForeignKeyConstraint $fkConstraint)
    {
        $fkConstraintArray = array(
            'tableName' => $fkConstraint->getName(),
            'foreignTable' => $fkConstraint->getForeignTableName(),
            'local' => $fkConstraint->getLocalColumns(),
            'foreign' => $fkConstraint->getForeignColumns(),
            'onUpdate' => ($fkConstraint->hasOption('onUpdate')?$fkConstraint->getOption('onUpdate'):null),
            'onDelete' => ($fkConstraint->hasOption('onDelete')?$fkConstraint->getOption('onDelete'):null),
        );

        // Append the foreign key constraints SQL
        if ($this->_platform->supportsForeignKeyConstraints()) {
            $this->_createFkConstraintQueries = array_merge($this->_createFkConstraintQueries,
                (array) $this->_platform->getCreateForeignKeySql($localTable->getName(), $fkConstraintArray)
            );
        }
    }

    /**
     * @param Table $table
     * @param Index $index
     */
    public function acceptIndex(Table $table, Index $index)
    {
        
    }

    /**
     * @param Table $table
     * @param Constraint $constraint
     */
    public function acceptCheckConstraint(Table $table, Constraint $constraint)
    {
        
    }

    /**
     * @param Sequence $sequence
     */
    public function acceptSequence(Sequence $sequence)
    {
        $this->_createSequenceQueries = array_merge($this->_createSequenceQueries,
            (array)$this->_platform->getCreateSequenceSql(
                $sequence->getName(),
                $sequence->getInitialValue(),
                $sequence->getAllocationSize()
            )
        );
    }

    /**
     * @return array
     */
    public function resetQueries()
    {
        $this->_createTableQueries = array();
        $this->_createSequenceQueries = array();
        $this->_createFkConstraintQueries = array();
    }

    /**
     * Get all queries collected so far.
     *
     * @return array
     */
    public function getQueries()
    {
        return array_merge(
            $this->_createTableQueries,
            $this->_createSequenceQueries,
            $this->_createFkConstraintQueries
        );
    }
}