<?php

/** 
Copyright distrib (2018) 

contact@opendistrib.net

Ce logiciel est un programme informatique servant à aider les producteurs 
à distribuer leur production en circuits courts. 

Ce logiciel est régi par la licence CeCILL soumise au droit français et
respectant les principes de diffusion des logiciels libres. Vous pouvez
utiliser, modifier et/ou redistribuer ce programme sous les conditions
de la licence CeCILL telle que diffusée par le CEA, le CNRS et l'INRIA 
sur le site "http://www.cecill.info".

En contrepartie de l'accessibilité au code source et des droits de copie,
de modification et de redistribution accordés par cette licence, il n'est
offert aux utilisateurs qu'une garantie limitée.  Pour les mêmes raisons,
seule une responsabilité restreinte pèse sur l'auteur du programme,  le
titulaire des droits patrimoniaux et les concédants successifs.

A cet égard  l'attention de l'utilisateur est attirée sur les risques
associés au chargement,  à l'utilisation,  à la modification et/ou au
développement et à la reproduction du logiciel par l'utilisateur étant 
donné sa spécificité de logiciel libre, qui peut le rendre complexe à 
manipuler et qui le réserve donc à des développeurs et des professionnels
avertis possédant  des  connaissances  informatiques approfondies.  Les
utilisateurs sont donc invités à charger  et  tester  l'adéquation  du
logiciel à leurs besoins dans des conditions permettant d'assurer la
sécurité de leurs systèmes et ou de leurs données et, plus généralement, 
à l'utiliser et l'exploiter dans les mêmes conditions de sécurité. 

Le fait que vous puissiez accéder à cet en-tête signifie que vous avez 
pris connaissance de la licence CeCILL, et que vous en avez accepté les
termes.
*/

namespace producer\controllers;

use common\models\ProductDistribution ;
use common\models\User ;
use common\models\Producer ;
use common\models\Order ;
use common\models\UserPointSale ;
use common\models\Product ;
use DateTime;

class OrderController extends ProducerBaseController 
{
    var $enableCsrfValidation = false;

    public function behaviors() 
    {
        return [
            'access' => [
                'class' => AccessControl::className(),
                'rules' => [
                    [
                        'allow' => true,
                        'roles' => ['@'],
                    ]
                ],
            ],
        ];
    }
    
    public function actionOrder($id = 0, $date = '') 
    {
        $params = [] ;
        
        if($id) {
            $order = Order::searchOne([
                'id' => $id
            ]) ;
            if($order) {
                if($order->getState() == Order::STATE_OPEN) {
                    $params['order'] = $order ;
                }
            }
        }
        
        if(strlen($date)) {
            $distribution = Distribution::searchOne([
                'date' => $date,
                'id_producer' => Producer::getId()
            ]) ;
            if($distribution) {
                $params['date'] = $date ;   
            }
        }
        
        return $this->render('order', $params) ;
    }
    
    /**
     * Affiche l'historique des commandes de l'utilisateur
     * 
     * @return ProducerView
     */
    public function actionHistory($type = 'incoming') 
    {
        $query = Order::find()
                ->with('productOrder', 'pointSale', 'creditHistory')
                ->joinWith('distribution', 'distribution.producer')
                ->where([
                    'id_user' => Yii::$app->user->id,
                    'distribution.id_producer' => Producer::getId()
                ])
                
                ->params([':date_today' => date('Y-m-d')]);
        
        $queryIncoming = clone $query ;
        $queryIncoming->andWhere('distribution.date >= :date_today')->orderBy('distribution.date ASC');
        
        $queryPassed = clone $query ;
        $queryPassed->andWhere('distribution.date < :date_today')->orderBy('distribution.date DESC');
        
        $dataProviderOrders = new ActiveDataProvider([
            'query' => ($type == 'incoming') ? $queryIncoming : $queryPassed,
            'pagination' => [
                'pageSize' => 10,
            ],
        ]);

        return $this->render('history', [
            'dataProviderOrders' => $dataProviderOrders,
            'orderOk' => Yii::$app->getRequest()->get('orderOk', false),
            'cancelOk' => Yii::$app->getRequest()->get('cancelOk', false),
            'type' => $type,
            'countIncoming' => $queryIncoming->count(),
            'countPassed' => $queryPassed->count(),
        ]);
    }

    /**
     * Supprime un producteur.
     * 
     * @param integer $id
     */
    public function actionRemoveProducer($id = 0) 
    {
        $userProducer = UserProducer::find()
                ->where(['id_producer' => $id, 'id_user' => User::getCurrentId()])
                ->one();

        $userProducer->active = 0;
        $userProducer->save();

        $this->redirect(['order/index']);
    }

    /**
     * Crée une commande.
     * 
     * @return mixed
     */
    public function actionAjaxProcess() 
    {
        \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
        $order = new Order ;
        $idProducer = $this->getProducer()->id ;

        $posts = Yii::$app->request->post();
        
        if ($idProducer) {
            $this->_verifyProducerActive($idProducer);
        }

        if ($order->load($posts)) {
            $order = Order::find()
                ->where('id_distribution = :id_distribution')
                ->andWhere('id_user = :id_user')
                ->params([
                    ':id_distribution' => $posts['Order']['id_distribution'],
                    ':id_user' => User::getCurrentId()
                ])
                ->one();
            
            if (!$order) {
                $order = new Order;
                $order->load(Yii::$app->request->post());
                $order->id_user = User::getCurrentId();
                $order->date = date('Y-m-d H:i:s');
                $order->origin = Order::ORIGIN_USER;
            }
            
            $errors = $this->processForm($order);
            
            if(count($errors)) {
                return ['status' => 'error', 'errors' => $errors] ;
            } 
        }

        return ['status' => 'success', 'idOrder' => $order->id] ;
    }

    /**
     * Vérifie si un producteur est actif.
     * 
     * @param integer $idProducer
     * @throws NotFoundHttpException
     */
    public function _verifyProducerActive($idProducer) 
    {
        $producer = Producer::findOne($idProducer);
        if ($producer && !$producer->active) {
            throw new NotFoundHttpException('Ce producteur est actuellement hors ligne.');
        }
    }

    /**
     * Traite le formulaire de création/modification de commande.
     * 
     * @param Commande $order
     */
    public function processForm($order) 
    {
        $posts = Yii::$app->request->post();
        $productsArray = [];
        $totalQuantity = 0;
        $producer = $this->getProducer() ;

        foreach ($posts['products'] as $key => $quantity) {
            $product = Product::find()->where(['id' => (int) $key])->one();
            $totalQuantity += $quantity;
            if ($product && $quantity) {
                $productsArray[] = $product;
            }
        }
        
        // date
        $errorDate = false;
        if (isset($order->id_distribution)) {
            // date de commande
            $distribution = Distribution::find()->where(['id' => $order->id_distribution])->one();
            $date = $this->getProducer()->getEarliestDateOrder() ;

            if($order->getState() != Order::STATE_OPEN) {
                $errorDate = true;
            }
        }

        // point de vente
        $errorPointSale = false;
        if (isset($distribution) && $distribution) {

            $pointSaleDistribution = PointSaleDistribution::searchOne([
                'id_distribution' => $distribution->id,
                'id_point_sale' => $posts['Order']['id_point_sale']
            ]) ;

            if (!$pointSaleDistribution || !$pointSaleDistribution->delivery) {
                $errorPointSale = true;
            }

            $pointSale = PointSale::findOne($posts['Order']['id_point_sale']);

            if ($pointSale) {
                if (strlen($pointSale->code) && !$pointSale->validateCode($posts['code_point_sale'])) {
                    $errorPointSale = true;
                }
            } else {
                $errorPointSale = true;
            }
            
            $userPointSale = UserPointSale::searchOne([
                'id_user' => User::getCurrentId(),
                'id_point_sale' => $pointSale->id
            ]) ;
            
            if($pointSale->restricted_access && !$userPointSale) {
                $errorPointSale = true;
            }
        }

        $errors = [] ;
        
        if ($order->validate() && count($productsArray) && !$errorDate && !$errorPointSale) {

            $userProducer = UserProducer::searchOne([
                'id_producer' => $order->distribution->id_producer,
                'id_user' => User::getCurrentId()
            ]) ;
            
            // gestion point de vente
            $pointSale = PointSale::searchOne([
                'id' => $order->id_point_sale
            ]) ;
            
            $order->comment_point_sale = ($pointSale && strlen($pointSale->getComment())) ?
                    $pointSale->getComment() : '' ;
                
            // la commande est automatiquement réactivée lors d'une modification
            $order->date_delete = null ;
            
            // sauvegarde de la commande
            $order->save();
            
            // ajout de l'utilisateur à l'établissement
            Producer::addUser(User::getCurrentId(), $distribution->id_producer) ;

            // suppression de tous les enregistrements ProductOrder
            if (!is_null($order)) {
                ProductOrder::deleteAll(['id_order' => $order->id]);
                
                $stepsArray = [] ;
                if(isset($order->productOrder)) {
                    foreach($order->productOrder as $productOrder) {
                        $unitsArray[$productOrder->id_product] = $productOrder->unit;
                    }
                }
            }

            // produits dispos
            $availableProducts = ProductDistribution::searchByDistribution($distribution->id) ;

            // sauvegarde des produits
            foreach ($productsArray as $product) {
                if (isset($availableProducts[$product->id])) {
                    $productOrder = new ProductOrder();
                    $productOrder->id_order = $order->id;
                    $productOrder->id_product = $product->id;

                    $productOrder->price = $product->price;

                    $unit = (!is_null($order) && isset($unitsArray[$product->id])) ? $unitsArray[$product->id] : $product->unit ;
                    $coefficient = Product::$unitsArray[$unit]['coefficient'] ;
                    $quantity = ((int) $posts['products'][$product->id]) / $coefficient ;
                    if ($availableProducts[$product->id]['quantity_max'] && $quantity > $availableProducts[$product->id]['quantity_remaining']) {
                        $quantity = $availableProducts[$product->id]['quantity_remaining'];
                    }
                        
                    $productOrder->quantity = $quantity;
                    $productOrder->unit = $product->unit ;
                    $productOrder->step = $product->step ;
                    $productOrder->save();
                }
            }
            
            // lien utilisateur / point de vente
            $pointSale->linkUser(User::getCurrentId()) ;

            // credit
            $credit = Producer::getConfig('credit');
            $creditLimit = Producer::getConfig('credit_limit');
            $creditFunctioning = $pointSale->getCreditFunctioning() ;
            $creditUser = Yii::$app->user->identity->getCredit($distribution->id_producer);
            $order = Order::searchOne([
                'id' => $order->id
            ]) ;
            $amountPaid = $order->getAmount(Order::AMOUNT_PAID);
            $amountRemaining = $order->getAmount(Order::AMOUNT_REMAINING) ;
            
            if($credit && $pointSale->credit && 
                    ( ($pointSale->credit_functioning == Producer::CREDIT_FUNCTIONING_OPTIONAL && $posts['use_credit']) || 
                      $pointSale->credit_functioning == Producer::CREDIT_FUNCTIONING_MANDATORY ||
                      ($pointSale->credit_functioning == Producer::CREDIT_FUNCTIONING_USER && $userProducer->credit_active) 
                    )) {

                // à payer
                if ($order->getPaymentStatus() == Order::PAYMENT_UNPAID) {

                    if(!is_null($creditLimit) && $amountRemaining > $creditUser - $creditLimit) {
                        $amountRemaining = $creditUser - $creditLimit ;
                    }
                    
                    if ($amountRemaining > 0) {
                        $order->saveCreditHistory(
                            CreditHistory::TYPE_PAYMENT, 
                            $amountRemaining, 
                            $distribution->id_producer, 
                            User::getCurrentId(),
                            User::getCurrentId()
                        );
                    }
                }
                // surplus à rembourser
                elseif ($order->getPaymentStatus() == Order::PAYMENT_SURPLUS) {
                    $amountSurplus = $order->getAmount(Order::AMOUNT_SURPLUS) ;
                    $order->saveCreditHistory(
                        CreditHistory::TYPE_REFUND, 
                        $amountSurplus, 
                        $distribution->id_producer, 
                        User::getCurrentId(),
                        User::getCurrentId()
                    );
                }
            }
        } 
        
        
        if (!count($productsArray)) {
            $errors[] = "Vous n'avez choisi aucun produit" ;
        }
        if ($errorDate) {
            $errors[] = "Vous ne pouvez pas commander pour cette date." ;
        }
        if ($errorPointSale) {
            $errors[] = "Point de vente invalide." ;
        }
        
        return $errors ;
    }

    /**
     * Annule une commande.
     * 
     * @param integer $id
     * @throws \yii\web\NotFoundHttpException
     * @throws UserException
     */
    public function actionCancel($id) 
    {
        $order = Order::searchOne([
            'id' => $id
        ]) ;

        if(!$order) {
            throw new \yii\web\NotFoundHttpException('Commande introuvable');
        }
            
        if ($order->getState() != Order::STATE_OPEN) {
            throw new UserException('Vous ne pouvez plus annuler cette commande.');
        }

        if ($order && User::getCurrentId() == $order->id_user) {
            $order->delete() ;
            Yii::$app->session->setFlash('success','Votre commande a bien été annulée.') ;
        }
        
        $this->redirect(Yii::$app->urlManager->createUrl(['order/history']));
    }

    /**
     * Vérifie le code saisi pour un point de vente.
     * 
     * @param integer $idPointSale
     * @param string $code
     * @return boolean
     */
    public function actionAjaxValidateCodePointSale($idPointSale, $code) 
    {
        \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
        
        $pointSale = PointSale::findOne($idPointSale);
        if ($pointSale) {
            if ($pointSale->validateCode($code)) {
                return 1;
            }
        }
        return 0;
    }
    
    public function actionAjaxInfos($date = '') 
    {
        \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
        
        $json = [] ;
        
        $format = 'Y-m-d' ;
        $dateObject = DateTime::createFromFormat($format, $date);
        
        // Producteur
        $producer = Producer::searchOne([
            'id' => $this->getProducer()->id
        ]) ;
        $json['producer'] = [
            'order_infos' => $producer->order_infos,
            'credit' => $producer->credit,
            'credit_functioning' => $producer->credit_functioning,
            'use_credit_checked_default' => $producer->use_credit_checked_default,
            'credit_limit' => is_numeric($producer->credit_limit) ? $producer->credit_limit : null
        ] ;
        
        // Distributions
        $dateMini = $producer->getEarliestDateOrder() ;
        
        $distributionsArray = Distribution::searchAll([
            'active' => 1
        ], [
            'conditions' => ['date > :date'],
            'params' => [':date' => $dateMini],
        ]) ;
        $json['distributions'] = $distributionsArray ;
        
        // Commandes de l'utilisateur
        $ordersUserArray = Order::searchAll([
            'id_user' => User::getCurrentId()
        ], [
            'conditions' => [
                'distribution.date > :date'
            ],
            'params' => [
                ':date' => $dateMini
            ]
        ]);
        if(is_array($ordersUserArray) && count($ordersUserArray)) {
            foreach($ordersUserArray as &$order) {
                $order = array_merge($order->getAttributes(), [
                    'amount_total' => $order->getAmount(Order::AMOUNT_TOTAL),
                    'date_distribution' => $order->distribution->date,
                    'pointSale' => $order->pointSale->getAttributes()
                ]) ; 
            }
            $json['orders'] = $ordersUserArray;
        }
        
        // User
        $userProducer = UserProducer::searchOne([
            'id_producer' => $producer->id,
            'id_user' => User::getCurrentId()
        ]) ;
        
        $json['user'] = [
            'credit' => $userProducer->credit,
            'credit_active' => $userProducer->credit_active,
        ] ;
        
        if($dateObject && $dateObject->format($format) === $date) {
            
            // Commande de l'utilisateur
            $orderUser = Order::searchOne([
                'distribution.date' => $date,
                'id_user' => User::getCurrentId(),
            ]);
            
            if($orderUser) {
                $json['order'] = array_merge($orderUser->getAttributes(), [
                    'amount_total' => $orderUser->getAmount(Order::AMOUNT_TOTAL),
                    'amount_paid' => $orderUser->getAmount(Order::AMOUNT_PAID),
                ]) ; 
            }
            
            // distribution
            $distribution = Distribution::initDistribution($date) ;
            $json['distribution'] = $distribution ;
                
            $pointsSaleArray = PointSale::find()
                ->joinWith(['pointSaleDistribution' => function($query) use ($distribution) {
                        $query->where(['id_distribution' => $distribution->id]);
                    }
                ])
                ->with(['userPointSale' => function($query) {
                    $query->onCondition(['id_user' => User::getCurrentId()]) ;
                }])
                ->where(['id_producer' => $distribution->id_producer])
                ->andWhere('restricted_access = 0 OR (restricted_access = 1 AND (SELECT COUNT(*) FROM user_point_sale WHERE point_sale.id = user_point_sale.id_point_sale AND user_point_sale.id_user = :id_user) > 0)')
                ->params([':id_user' => User::getCurrentId()])
                ->all();

            $creditFunctioningProducer = Producer::getConfig('credit_functioning') ;
            
            foreach($pointsSaleArray as &$pointSale) {
                $pointSale = array_merge($pointSale->getAttributes(),[
                    'pointSaleDistribution' => [
                        'id_distribution' => $pointSale->pointSaleDistribution[0]->id_distribution,
                        'id_point_sale' => $pointSale->pointSaleDistribution[0]->id_point_sale,
                        'delivery' => $pointSale->pointSaleDistribution[0]->delivery
                    ],
                    'userPointSale' => ($pointSale->userPointSale ? $pointSale->userPointSale[0] : '') 
                ]) ;
                if($pointSale['code'] && strlen($pointSale['code'])) {
                    $pointSale['code'] = '***' ;
                }
                if(!strlen($pointSale['credit_functioning'])) {
                    $pointSale['credit_functioning'] = $creditFunctioningProducer ;
                }
            }
            
            $favoritePointSale = User::getCurrent()->getFavoritePointSale() ;
            
            if($favoritePointSale) {
                $newPointSaleArray = [] ;
                
                foreach($pointsSaleArray as $pointSale) {
                    if($pointSale['id'] != $favoritePointSale->id) {
                        $newPointSaleArray[] = $pointSale ;
                    }
                    else {
                        $theFavoritePointSale = $pointSale ;
                    }
                }
                
                if(isset($theFavoritePointSale)) {
                    array_unshift($newPointSaleArray, $theFavoritePointSale) ;
                }
            }
            else {
                $newPointSaleArray = $pointsSaleArray ;
            }
            
            $json['points_sale'] = $newPointSaleArray;
            
            // Commandes totales
            $ordersArray = Order::searchAll([
                'distribution.date' => $date,
            ]);
            
            // Produits
            if(Producer::getConfig('option_allow_user_gift')) {
                $productsArray = Product::find()
                    ->orWhere(['id_producer' => $this->getProducer()->id,]) 
                    ->orWhere(['id_producer' => 0,]) ; // produit "Don";
            }
            else {
                $productsArray = Product::find()
                    ->where(['id_producer' => $this->getProducer()->id,]) ;
            }
                
            $productsArray = $productsArray->joinWith(['productDistribution' => function($query) use($distribution) {
                    $query->andOnCondition('product_distribution.id_distribution = '.$distribution->id) ;
                }])
                ->orderBy('product_distribution.active DESC, order ASC')
                ->asArray()
                ->all();
            
            $indexProduct = 0 ;
            foreach($productsArray as &$product) {
                
                if(!isset($product['productDistribution'][0])) {
                    $product['productDistribution'][0] = $distribution->linkProduct($product) ;
                }
                
                $coefficient_unit = Product::$unitsArray[$product['unit']]['coefficient'] ;
                
                if(is_null($product['photo'])) {
                    $product['photo'] = '' ;
                }
                
                $product['quantity_max'] = $product['productDistribution'][0]['quantity_max'] ;
                $quantityOrder = Order::getProductQuantity($product['id'], $ordersArray) ;
                $product['quantity_ordered'] = $quantityOrder ;
                $product['quantity_remaining'] = $product['quantity_max'] - $quantityOrder ;
                
                if($orderUser) {
                    $quantityOrderUser = Order::getProductQuantity($product['id'], [$orderUser], true) ;
                    $product['quantity_ordered'] = $quantityOrder  ;
                    $product['quantity_remaining'] = $product['quantity_max'] - $quantityOrder + $quantityOrderUser ;
                    $product['quantity_form'] = $quantityOrderUser * $coefficient_unit ;
                    foreach($orderUser->productOrder as $productOrder) {
                        if($productOrder->id_product == $product['id']) {
                            $product['wording_unit'] = Product::strUnit($productOrder->unit,'wording_unit', true) ;
                            $product['step'] = $productOrder->step ;
                        }
                    }
                }
                else {
                    $product['quantity_form'] = 0 ;
                    $product['wording_unit'] = Product::strUnit($product['unit'],'wording_unit', true) ;
                }
                $product['coefficient_unit'] = $coefficient_unit ;
                if($product['quantity_remaining'] < 0) $product['quantity_remaining'] = 0 ;
                $product['index'] = $indexProduct ++ ;    
            }
            
            $json['products'] = $productsArray;
        }
        
        return $json ;
    }

    public function actionConfirm($idOrder) 
    {
        $order = Order::searchOne(['id' => $idOrder]) ;
        
        if(!$order || $order->id_user != User::getCurrentId()) {
            throw new \yii\base\UserException('Commande introuvable.') ;
        }
        
        return $this->render('confirm',[
            'order' => $order
        ]) ;
    }
    
}