date-poll-api/src/Controller/MigrationController.php

<?php

namespace App\Controller;
//use FOS\RestBundle\Controller\Annotations\Get;
//use FOS\RestBundle\Controller\Annotations\Route;
use App\Entity\Choice;
use App\Entity\Comment;
use App\Entity\StackOfVotes;
use App\Entity\Vote;
use App\Repository\PollRepository;
use App\Service\MailService;
use FOS\RestBundle\Controller\Annotations\Get;
use FOS\RestBundle\Controller\Annotations\Route;
use JMS\Serializer\Type\Exception\Exception;
use Symfony\Component\HttpFoundation\JsonResponse;
use App\Entity\Owner;
use App\Entity\Poll;

/**
 * Class DefaultController
 * @package App\Controller
 * @Route("/migration-from-v1",name="admin_homepage")
 */
class MigrationController extends FramadateController {
	/**
	 * @Get(path ="/{unique_key}",
	 *      name = "_migrate_from_v1")
	 */
	public function indexAction( $unique_key ) {

		// get env vars
		// check uniq key is good
		if ( $unique_key !== $this->getParameter( 'UNIQ_INSTALL_KEY' ) ) {
			return new JsonResponse( [
				'error' => 'NOPE! veuillez vérifier votre fichier .env',
			] );
		};


		// fetch old Database

		$debug = '';

		$em        = $this->getDoctrine()->getManager();
		$pollsBySlug = [];


		$pdo_options[ \PDO::ATTR_ERRMODE ] = \PDO::ERRMODE_EXCEPTION;
		$bdd                               = new \PDO( 'mysql:host=localhost;dbname=' . $this->getParameter( 'OLD_DATABASE_NAME' ),
			$this->getParameter( 'OLD_DATABASE_USER' ),
			$this->getParameter( 'OLD_DATABASE_PASS' ),
			$pdo_options );
		$res_polls                          = $bdd->query( 'SELECT * FROM fd_poll' );
		while ( $d = $res_polls->fetch( \PDO::FETCH_OBJ ) ) {

			$debug .= " <br> ajout de sondage : ".$d->title .'  - '. $d->id ;


			$newPoll     = new Poll();
			$owner = new Owner();

			$owner->setEmail( $d->admin_mail )
			      ->setPseudo( $d->admin_name )
			      ->addPoll($newPoll);

			$newPoll
				->setOwner( $owner )
				->setCustomURL( $d->id )
				->setKind( $d->id === 'D' ? 'date' : 'text' )
				->setHideResults(  ! $d->results_publicly_visible )
				->setAdminKey( $d->admin_id )
				->setTitle( $d->title )
				->setVotesAllowed( $d->receiveNewVotes )
				->setCommentsAllowed( $d->receiveNewComments )
				->setChoicesMax( $d->ValueMax )
				->setPassword( $d->password_hash )
				->setDescription( $d->description )
				->setCreationDate( date_create( $d->creation_date ) );

			$pollsBySlug[ $d->id ] = $newPoll;


			$em->persist( $owner );
			$em->persist( $newPoll );
		}
		// get choices, slots and link them with poll by their slug
		$res_slots                          = $bdd->query( 'SELECT * FROM fd_slot' );
		$pollChoicesOrderedBySlug = [];
		$choicesCreated = [];

		while ( $d = $res_slots->fetch( \PDO::FETCH_OBJ ) ) {

			$debug .= " <br> ajout de slot, converti en choix de réponse : ".$d->poll_id. ' : '. $d->moments;

			$pollSlug = $d->poll_id;
			$poll = $pollsBySlug[$pollSlug];

			$moments = explode(',' , $d->moments);
			foreach ( $moments as $moment ) {
			$newChoice = new Choice();
			$newChoice
				->setPoll($poll)
				->setDateTime(date_create(  strtotime( $d->title)))
				->setName($moment);

			$pollChoicesOrderedBySlug[$pollSlug][] = $newChoice;
			$poll->addChoice($newChoice);

			$em->persist( $newChoice );
			$em->persist( $newPoll );
				$choicesCreated[] = $newChoice;
			}
		}

		// get votes
		$stacksOfVote = [];
		$res_votes                          = $bdd->query( 'SELECT * FROM fd_vote' );
		while ( $d = $res_votes->fetch( \PDO::FETCH_OBJ ) ) {

			$debug .= " <br> ajout de stack de vote : ".$d->name;
			$pollSlug = $d->poll_id;
			$poll     = $pollsBySlug[ $pollSlug ];

			$newStack = new StackOfVotes();
			$newOwner = new Owner();
			$newOwner
				->setPseudo($d->name)
				->setEmail('the_anonymous_email_from_@_migration_offramadate.org')
				->setModifierToken($d->uniqId)
			;

			$newStack->setPoll($poll)
			         ->setOwner($newOwner)
			         ->setPseudo($d->name)
			;

			// each choice answer is encoded in a value :

			$voteCodes = str_split($d->choices);
			// get choices of the poll and answer accordingly

			$ii=0;
			foreach ( $voteCodes as $vote_code ) {
				if($vote_code !== ' '){
					$choice = $pollChoicesOrderedBySlug[$pollSlug][$ii];

					$newVote = new Vote();

					$newVote
						->setChoice($choice)
						->setStacksOfVotes($newStack)
						->setPoll($poll)
						->setValue( $this->mapAnswerNumberToWord($vote_code))
					;
					$newStack->addVote($newVote);

					$em->persist( $newVote );
					$votes[] = $newVote;
				}
				$ii++;
			}


			$poll->addStackOfVote($newStack);
			$em->persist( $newStack );
			$stacksOfVote[] = $newStack;

		}

		$comments = [];
		$res_comments                          = $bdd->query( 'SELECT * FROM fd_comment' );
		while ( $d = $res_comments->fetch( \PDO::FETCH_OBJ ) ) {

			$debug .= " <br> ajout de commentaire : ".$d->name. ' '. $d->comment;

			$pollSlug = $d->poll_id;
			$poll     = $pollsBySlug[ $pollSlug ];
			$newComment = new Comment();
			$poll->addComment($newComment);

			$newComment->setPoll($poll)
				->setCreatedAt( date_create($d->date))
				->setText( $d->comment)
				// TODO update entities
				->setPseudo( $d->name);
			$em->persist( $newComment );
			$comments[] = $newComment;

		}
		// gather objects
		// create new polls
		$em->flush();
		// success
		// failure notice
		$debug .= " <br> <br> ça c'est fait. ";

		return $this->render('pages/migration.html.twig' , [
			"message" => "welcome to the framadate migration endpoint, it has yet to be done",
			"debug"   => $debug,
			"OLD_DATABASE_NAME" => $this->getParameter( 'OLD_DATABASE_NAME' ),
			"OLD_DATABASE_USER" => $this->getParameter( 'OLD_DATABASE_USER' ),
			"counters" =>[
				'polls' => count($pollsBySlug),
				'comments' => count($comments),
				'choices' => count($choicesCreated),
				'stacks_of_votes' => count($stacksOfVote),
				'votes' => count($votes),
			]
		]);
	}
	/**
	 * @param $numberToConvert
	 * conversion of answer:
	 * space character : no answer, 0 : no , 1 : maybe , 2 : yes
	 * @return string
	 */
	public function mapAnswerNumberToWord($numberToConvert){
		$word = '';
		switch ($numberToConvert){
			case 0:
				$word = 'no';
				break;
				case 1:
				$word = 'maybe';
				break;
				case 2:
				$word = 'yes';
				break;
			default:
				$word = 'no';
		}
		return $word;
	}

}