<?php

namespace App\User\MembershipType;

use App_ECommerce_Cart_ItemInterface;
use App_ECommerce_Cart_Obj as CartObj;
use Qs_Array;
use Qs_String;

class Obj extends AbstractObj implements App_ECommerce_Cart_ItemInterface
{
    const RENEWED           = 'renewed';
    const CHECKOUT_REQUIRED = 'checkoutRequired';

    protected $_cartItemData;

    public static function getCartItemCapabilities()
    {
        return [];
    }

    public function setCartItemData(array $data)
    {
        $this->setPrimaryKey($data['productId']);
        $this->_cartItemData = $data;
        return $this;
    }

    public function prepareCartItemData()
    {
        $this->_cartItemData['showDescription'] = 'y';
        return $this->_cartItemData;
    }

    public function beforeValidateCart()
    {
        return $this;
    }

    public function validateCartItem()
    {
        $this->_errors = [];
        if (!($membership = $this->_getTable()->search($this->_cartItemData['productId']))) {
            $this->_errors[] = 'This Membership is not longer exists';
        }
        if ($this->_cartItemData['quantity'] != 1) {
            $this->_errors[] = 'Wrong quantity.';
        }
        return empty($this->_errors);
    }

    public function completeItemList(array $itemList)
    {
        foreach ($itemList as $cartItem) {
            $result = $this->renewMembership($cartItem['productId'] /* membershipId */, $cartItem['productCategoryId'] /* userId */);
            Mail::sendMembershipRenewedToAdmin($result);
        }
        return $this;
    }

    public function afterCartItemRemove()
    {
        return $this;
    }

    public function renew($userId)
    {
        if (!($user = $this->_getTable('User')->searchBy(['id' => $userId, 'bought' => 'y']))) {
            throw new Exception('Can\'t find user by id=' . (int) $userId);
        }
        if (empty($user['membershipTypeId'])) {
            throw new Exception('Membership is not assigned');
        }
        if (!($membership = $this->_getTable('MembershipType')->search($user['membershipTypeId']))) {
            throw new Exception('Can\'t find membership by id=' . (int) $user['membershipTypeId']);
        }
        if ((float) $membership['price'] <= 0) {
            // If membership became free we don't need to go over shopping cart
            $result = $this->renewMembership($user['membershipTypeId'], $user['id']);
            Mail::sendMembershipRenewedToAdmin($result);
            return self::RENEWED;
        }

        $cartItem = [
            'cartItemType'      => 'User\\MembershipType\\',
            'productId'         => $membership['id'],
            'productCategoryId' => $user['id'],
            'title'             => 'Renewing Membership',
            'description'       => Qs_String::fill(
                $this->getConfig('cartItemDescription'),
                [
                    'firstName'      => $user['firstName'],
                    'lastName'       => $user['lastName'],
                    'membershipType' => $membership['title'],
                ]
            ),
            'applyTax'          => 'n',
            'tax'               => 0,
            'quantity'          => 1,
            'price'             => $membership['price'],
            'weight'            => 0,
            'applyShipping'     => 'n',
        ];

        $cart = CartObj::getInstance();

        if ($cart->itemExists(Qs_Array::map($cartItem, ['cartItemType', 'productId', 'productCategoryId']))) {
            throw new Exception('You already have Membership item in your Shopping Cart');
        }
        $cart->addItem($cartItem);

        return self::CHECKOUT_REQUIRED;
    }

    public function renewMembership($membershipId, $userId)
    {
        if (!($membership = $this->_getTable('MembershipType')->search($membershipId))) {
            return $this;
        }
        if (!($user = $this->_getTable('User')->search($userId))) {
            return $this;
        }

        $fromTime = null;
        // start membership period from expiredOn date if it is in the future
        if (!empty($user['expiredOn']) && ($user['expiredOn'] > date('Y-m-d'))) {
            $fromTime = strtotime($user['expiredOn']);
        }
        $expiredOn = $this->calculateMembershipExpiration($membership['duration'], $fromTime);

        $this->_getTable('User')->updateByKey(compact('expiredOn'), $userId);
        return [
            'user'              => $user,
            'membership'        => $membership,
            'newExpirationDate' => $expiredOn,
        ];
    }

    public function calculateMembershipExpiration($years, $fromTime = null)
    {
        $years = (int) $years;
        if (empty($years)) {
            return null;
        }
        if (null === $fromTime) {
            $fromTime = time();
        }
        $currentYear = idate('Y', $fromTime);
        $currentMonth = idate('m', $fromTime);

        // AFTER October 1st will get the last quarter of the current year for free
        if ($currentMonth >= 10) {
            $years++;
        }
        $expiredOn = mktime(0, 0, 0, 12, 31, $currentYear + $years - 1);
        return date('Y-m-d', $expiredOn);
    }
}