<?php

declare(strict_types=1);

namespace App\GraphQL\Mutation;

use App\Entity\Tenant\Business;
use App\Entity\Tenant\Customer;
use App\Entity\Tenant\Task;
use App\Entity\Tenant\User;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Persistence\ManagerRegistry;
use Overblog\GraphQLBundle\Definition\Resolver\AliasedInterface;
use Overblog\GraphQLBundle\Definition\Resolver\MutationInterface;
use Overblog\GraphQLBundle\Definition\Argument;
use Overblog\GraphQLBundle\Error\UserError;

/**
 * Class TaskMutation
 * @package App\GraphQL\Mutation
 * @author Robinson Palacios
 */
class TaskMutation implements MutationInterface, AliasedInterface
{
    /**
     * @var ObjectManager
     */
    private $manager;

    /**
     * TaskMutation constructor.
     * @param ManagerRegistry $registry
     */
    public function __construct(ManagerRegistry $registry)
    {
        $this->manager = $registry->getManager('tenant');
    }

    /**
     * @return array|string[]
     */
    public static function getAliases(): array
    {
        return [
            'createTask' => 'create_task',
            'updateTask' => 'update_task',
            'deleteTask' => 'delete_task'

        ];
    }

    /**
     * @param User $user
     * @param Argument $args
     * @return Task
     */
    public function createTask(User $user, Argument $args): Task
    {
        $customer = $this->manager->getRepository(Customer::Class)->find($args['input']['customer_id']);
        if(!$customer){
            throw new UserError('Customer not found.');
        }

        $business = $this->manager->getRepository(Business::Class)->find($args['input']['business_id']);
        if(!$business){
            throw new UserError('Business not found.');
        }

        $task = new Task();

        $task->setTitle($args['input']['title']);
        $task->setDescription($args['input']['description']);
        $task->setCustomer($customer);
        $task->setBusiness($business);

        if(isset($args['input']['users_ids']) && $args['input']['users_ids']){
            //If the user is not admin, only can to asign task to himself
            if($user->getUserType() != 0 && (count($args['input']['users_ids']) > 1 || $args['input']['users_ids'][0] != $user->getId())){
                throw new UserError('User asigned no valid.');
            }
            $users = $this->manager->getRepository(User::Class)->findBy(array('id' => $args['input']['users_ids']));
            $task->setUsers(new ArrayCollection($users));
        }

        $task->setDueDate($args['input']['due_date']);
        $task->setPriority($args['input']['priority']);
        $task->setEstimatedTime($args['input']['estimated_time']);
        $task->setCompleteness($args['input']['completeness']);

        $this->manager->getRepository(Task::Class)->save($task);

        return $task;
    }

    /**
     * @param User $user
     * @param Argument $args
     * @return Task
     */
    public function updateTask(User $user, Argument $args): Task
    {
        $task =  $this->manager->getRepository(Task::Class)->find($args['input']['id']);

        if (!$task) {
            throw new UserError(
                'No task found for Id '.$args['input']['id']
            );
        }

        $customer = $this->manager->getRepository(Customer::Class)->find($args['input']['customer_id']);
        if(!$customer){
            throw new UserError('Customer not found.');
        }

        $business = $this->manager->getRepository(Business::Class)->find($args['input']['business_id']);
        if(!$business){
            throw new UserError('Business not found.');
        }

        $task->setTitle($args['input']['title']);
        $task->setDescription($args['input']['description']);
        $task->setCustomer($customer);
        $task->setBusiness($business);

        if(isset($args['input']['users_ids']) && $args['input']['users_ids']){
            //If the user is not admin, only can to asign task to himself
            if($user->getUserType() != 0 && (count($args['input']['users_ids']) > 1 || $args['input']['users_ids'][0] != $user->getId())){
                throw new UserError('User asigned no valid.');
            }
            $users = $this->manager->getRepository(User::Class)->findBy(array('id' => $args['input']['users_ids']));
            $task->setUsers(new ArrayCollection($users));
        }

        $task->setDueDate($args['input']['due_date']);
        $task->setPriority($args['input']['priority']);
        $task->setEstimatedTime($args['input']['estimated_time']);
        $task->setCompleteness($args['input']['completeness']);

        $this->manager->getRepository(Task::Class)->save($task);

        return $task;
    }

    public function deleteTask(User $user, Argument $args): Task{
        $task =  $this->manager->getRepository(Task::Class)->find($args['id']);
        if(!$task){
            throw new UserError('Task not exist.');
        }
        if($user->getUserType() == 0 || $user->getId() == $task->getCreatedBy()->getId()) {
            $task->setDeletedBy($user);
            $this->manager->getRepository(Task::Class)->save($task);
            $this->manager->remove($task);
            $this->manager->flush();

        }else{
            throw new UserError("You can't delete this task.");
        }

        return $task;
    }
}