<?php
/**
 * @copyright: Copyright © 2017 Firebear Studio. All rights reserved.
 * @author   : Firebear Studio <fbeardev@gmail.com>
 */
namespace Firebear\ImportExport\Model\Import\Order;

use Magento\ImportExport\Model\Import;

/**
 * Order Address Import
 */
class Address extends AbstractAdapter
{
    /**
     * Entity Type Code
     *
     */
    const ENTITY_TYPE_CODE = 'order';

    /**
     * Prefix of Fields
     *
     */
    const PREFIX = 'address';

    /**
     * Entity Id Column Name
     *
     */
    const COLUMN_ENTITY_ID = 'entity_id';

    /**
     * Address Type Column Name
     *
     */
    const COLUMN_ADDRESS_TYPE = 'address_type';

    /**
     * Country Id Column Name
     *
     */
    const COLUMN_COUNTRY_ID = 'country_id';

    /**
     * Keys Which Used To Build Result Data Array For Future Update
     */
    const ENTITIES_TO_BILLING_KEY = 'entities_to_update_billing';
    const ENTITIES_TO_SHIPPING_KEY = 'entities_to_update_shipping';

    /**
     * Error Codes
     */
    const ERROR_ENTITY_ID_IS_EMPTY = 'addressEntityIdIsEmpty';
    const ERROR_ADDRESS_TYPE_IS_EMPTY = 'addressTypeIsEmpty';
    const ERROR_DUPLICATE_ENTITY_ID = 'duplicateAddressEntityId';
    const ERROR_COUNTRY_ID_IS_EMPTY = 'countryIdIsEmpty';

    /**
     * Validation Failure Message Template Definitions
     *
     * @var array
     */
    protected $_messageTemplates = [
        self::ERROR_DUPLICATE_ENTITY_ID => 'Address entity_id is found more than once in the import file',
        self::ERROR_ADDRESS_TYPE_IS_EMPTY => 'Address address_type is empty',
        self::ERROR_ENTITY_ID_IS_EMPTY => 'Address entity_id is empty',
        self::ERROR_COUNTRY_ID_IS_EMPTY =>'Address country_id is empty'
    ];

    /**
     * Order Address Table Name
     *
     * @var string
     */
    protected $_mainTable = 'sales_order_address';

    /**
     * Retrieve The Prepared Data
     *
     * @param array $rowData
     * @return array|bool
     */
    public function prepareRowData(array $rowData)
    {
        $this->prepareCurrentOrderId($rowData);
        $rowData = $this->_extractField($rowData, static::PREFIX);
        return (count($rowData) && !$this->isEmptyRow($rowData))
            ? $rowData
            : false;
    }

    /**
     * Import Data Rows
     *
     * @return boolean
     */
    protected function _importData()
    {
        while ($bunch = $this->_dataSourceModel->getNextBunch()) {
            $toCreate = [];
            $toUpdate = [];
            $toDelete = [];
            $toBilling = [];
            $toShipping = [];
            $existingIncrementIds = [];

            if ($this->getBehavior() == Import::BEHAVIOR_REPLACE) {
                $incrementIds = array_filter(array_column($bunch, 'increment_id'));
                $existingIds = $this->getExistingIds($incrementIds);
                $existingIncrementIds = array_filter(array_column($existingIds, 'increment_id'));
            }
            foreach ($bunch as $rowNumber => $rowData) {
                $this->prepareCurrentOrderId($rowData);
                if (!empty($this->_currentOrderId)) {
                    if ($this->getBehavior() == Import::BEHAVIOR_REPLACE
                        && !in_array($this->_currentOrderId, $existingIncrementIds)) {
                        continue;
                    }
                }

                $rowData = $this->prepareRowData($rowData);
                /* validate data */
                if (!$rowData || !$this->validateRow($rowData, $rowNumber)) {
                    continue;
                }

                if ($this->getErrorAggregator()->hasToBeTerminated()) {
                    $this->getErrorAggregator()->addRowToSkip($rowNumber);
                    continue;
                }
                /* behavior selector */
                switch ($this->getBehavior()) {
                    case Import::BEHAVIOR_DELETE:
                        $toDelete[] = $this->_getEntityId($rowData);
                        break;
                    case Import::BEHAVIOR_REPLACE:
                        $toDelete[] = $this->_getEntityId($rowData);
                        $this->_deleteEntities($toDelete);
                        $data = $this->_prepareDataForUpdate($rowData);
                        $toCreate = array_merge($toCreate, $data[self::ENTITIES_TO_CREATE_KEY]);
                        $toBilling = array_merge($toBilling, $data[self::ENTITIES_TO_BILLING_KEY]);
                        $toShipping = array_merge($toShipping, $data[self::ENTITIES_TO_SHIPPING_KEY]);
                        break;
                    case Import::BEHAVIOR_ADD_UPDATE:
                        $data = $this->_prepareDataForUpdate($rowData);
                        $toCreate = array_merge($toCreate, $data[self::ENTITIES_TO_CREATE_KEY]);
                        $toUpdate = array_merge($toUpdate, $data[self::ENTITIES_TO_UPDATE_KEY]);
                        $toBilling = array_merge($toBilling, $data[self::ENTITIES_TO_BILLING_KEY]);
                        $toShipping = array_merge($toShipping, $data[self::ENTITIES_TO_SHIPPING_KEY]);
                        break;
                }
            }
            /* save prepared data */
            if ($toCreate || $toUpdate) {
                $this->_saveEntities($toCreate, $toUpdate);
                $this->_updateOrderEntities($toBilling);
                $this->_updateOrderEntities($toShipping);
            }
            if ($toDelete && $this->getBehavior() == Import::BEHAVIOR_DELETE) {
                $this->_deleteEntities($toDelete);
            }
        }
        return true;
    }

    /**
     * Retrieve Entity Id If Entity Is Present In Database
     *
     * @param array $rowData
     * @return bool|int
     */
    protected function _getExistEntityId(array $rowData)
    {
        $bind = [
            ':address_type' => $rowData[self::COLUMN_ADDRESS_TYPE],
            ':parent_id' => $this->_getOrderId($rowData)
        ];
        /** @var $select \Magento\Framework\DB\Select */
        $select = $this->_connection->select();
        $select->from($this->getMainTable(), 'entity_id')
            ->where('parent_id = :parent_id')
            ->where('address_type = :address_type');

        return $this->_connection->fetchOne($select, $bind);
    }

    /**
     * Prepare Data For Update
     *
     * @param array $rowData
     * @return array
     */
    protected function _prepareDataForUpdate(array $rowData)
    {
        $toCreate = [];
        $toUpdate = [];
        $toBilling = [];
        $toShipping = [];

        $newEntity = false;
        $entityId = $this->_getExistEntityId($rowData);
        $orderId = $this->_getOrderId($rowData);
        if (!$entityId) {
            /* create new entity id */
            $newEntity = true;
            $entityId = $this->_getNextEntityId();
            $this->_newEntities[$rowData[self::COLUMN_ENTITY_ID]] = $entityId;
        }

        if ('billing' == $rowData[self::COLUMN_ADDRESS_TYPE]) {
            $toBilling[] = [
                'entity_id' => $orderId,
                'billing_address_id' => $entityId
            ];
        } else {
            $toShipping[] = [
                'entity_id' => $orderId,
                'shipping_address_id' => $entityId
            ];
        }

        $entityRow = [
            'parent_id' => $orderId,
            'entity_id' => $entityId
        ];
        /* prepare data */
        $entityRow = $this->_prepareEntityRow($entityRow, $rowData);
        if ($newEntity) {
            $toCreate[] = $entityRow;
        } else {
            $toUpdate[] = $entityRow;
        }
        return [
            self::ENTITIES_TO_CREATE_KEY => $toCreate,
            self::ENTITIES_TO_UPDATE_KEY => $toUpdate,
            self::ENTITIES_TO_BILLING_KEY => $toBilling,
            self::ENTITIES_TO_SHIPPING_KEY => $toShipping
        ];
    }

    /**
     * Update And Insert Data In Order Entity Table
     *
     * @param array $toOrder Rows for update
     * @return $this
     */
    protected function _updateOrderEntities(array $toOrder)
    {
        if ($toOrder) {
            foreach ($toOrder as $row) {
                $field = isset($row['billing_address_id'])
                    ? 'billing_address_id'
                    : 'shipping_address_id';
                $bind = [$field => $row[$field]];
                $where = ['entity_id = ?' => $row['entity_id']];
                $this->_connection->update($this->getOrderTable(), $bind, $where);
            }
        }
        return $this;
    }

    /**
     * Validate Row Data For Add/Update Behaviour
     *
     * @param array $rowData
     * @param int $rowNumber
     * @return void
     */
    protected function _validateRowForUpdate(array $rowData, $rowNumber)
    {
        if ($this->_checkEntityIdKey($rowData, $rowNumber)) {
            if (empty($rowData[self::COLUMN_ADDRESS_TYPE])) {
                $this->addRowError(self::ERROR_ADDRESS_TYPE_IS_EMPTY, $rowNumber);
            }
            if (empty($rowData[self::COLUMN_COUNTRY_ID])) {
                $this->addRowError(self::ERROR_COUNTRY_ID_IS_EMPTY, $rowNumber);
            }
        }
    }
}