<?php
/**
 * Copyright © 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace Magento\Variable\Setup;

use Magento\Framework\Setup\InstallSchemaInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Framework\Setup\SchemaSetupInterface;

/**
 * @codeCoverageIgnore
 */
class InstallSchema implements InstallSchemaInterface
{
    /**
     * {@inheritdoc}
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     */
    public function install(SchemaSetupInterface $setup, ModuleContextInterface $context)
    {
        $installer = $setup;

        $connection = $installer->getConnection();

        $installer->startSetup();

        /**
         * Rename/Create table 'variable'
         */
        $variableTableName = $installer->getTable('variable');
        $coreVariableTableName = $installer->getTable('core_variable');
        if ($installer->tableExists('core_variable')) {
            $connection->renameTable($coreVariableTableName, $variableTableName);
        } else {
            $table = $connection->newTable(
                $variableTableName
            )->addColumn(
                'variable_id',
                \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                null,
                ['identity' => true, 'unsigned' => true, 'nullable' => false, 'primary' => true],
                'Variable Id'
            )->addColumn(
                'code',
                \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                255,
                [],
                'Variable Code'
            )->addColumn(
                'name',
                \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                255,
                [],
                'Variable Name'
            )->addIndex(
                $installer->getIdxName(
                    'variable',
                    ['code'],
                    \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_UNIQUE
                ),
                ['code'],
                ['type' => \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_UNIQUE]
            )->setComment(
                'Variables'
            );
            $connection->createTable($table);
        }


        /**
         * Rename/Create table 'variable_value'
         */
        $variableValueTableName = $installer->getTable('variable_value');
        $coreVariableValueTableName = $installer->getTable('core_variable_value');
        if ($installer->tableExists('core_variable_value')) {
            $connection->renameTable($coreVariableValueTableName, $variableValueTableName);
            $oldForeignKeys = $connection->getForeignKeys($variableValueTableName);
            foreach ($oldForeignKeys as $foreignKey) {
                $connection->dropForeignKey($variableValueTableName, $foreignKey['FK_NAME']);
            }
        } else {
            $table = $connection->newTable(
                $variableValueTableName
            )->addColumn(
                'value_id',
                \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                null,
                ['identity' => true, 'unsigned' => true, 'nullable' => false, 'primary' => true],
                'Variable Value Id'
            )->addColumn(
                'variable_id',
                \Magento\Framework\DB\Ddl\Table::TYPE_INTEGER,
                null,
                ['unsigned' => true, 'nullable' => false, 'default' => '0'],
                'Variable Id'
            )->addColumn(
                'store_id',
                \Magento\Framework\DB\Ddl\Table::TYPE_SMALLINT,
                null,
                ['unsigned' => true, 'nullable' => false, 'default' => '0'],
                'Store Id'
            )->addColumn(
                'plain_value',
                \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                '64k',
                [],
                'Plain Text Value'
            )->addColumn(
                'html_value',
                \Magento\Framework\DB\Ddl\Table::TYPE_TEXT,
                '64k',
                [],
                'Html Value'
            )->addIndex(
                $installer->getIdxName(
                    'variable_value',
                    ['variable_id', 'store_id'],
                    \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_UNIQUE
                ),
                ['variable_id', 'store_id'],
                ['type' => \Magento\Framework\DB\Adapter\AdapterInterface::INDEX_TYPE_UNIQUE]
            )->addIndex(
                $installer->getIdxName('variable_value', ['store_id']),
                ['store_id']
            )->setComment(
                'Variable Value'
            );
            $connection->createTable($table);
        }
        $connection->addForeignKey(
            $installer->getFkName('variable_value', 'store_id', 'store', 'store_id'),
            $variableValueTableName,
            'store_id',
            $installer->getTable('store'),
            'store_id',
            \Magento\Framework\DB\Ddl\Table::ACTION_CASCADE
        );
        $connection->addForeignKey(
            $installer->getFkName('variable_value', 'variable_id', 'variable', 'variable_id'),
            $variableValueTableName,
            'variable_id',
            $installer->getTable('variable'),
            'variable_id',
            \Magento\Framework\DB\Ddl\Table::ACTION_CASCADE
        );

        $installer->endSetup();
    }
}