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<?php |
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namespace PhpSchool\LearnYouPhp\Exercise; |
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use Faker\Generator; |
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use PDO; |
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use PhpSchool\PhpWorkshop\Check\DatabaseCheck; |
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use PhpSchool\PhpWorkshop\Check\ListenableCheckInterface; |
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use PhpSchool\PhpWorkshop\Event\Event; |
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use PhpSchool\PhpWorkshop\Event\EventDispatcher; |
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use PhpSchool\PhpWorkshop\Exercise\AbstractExercise; |
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use PhpSchool\PhpWorkshop\Exercise\ExerciseInterface; |
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use PhpSchool\PhpWorkshop\Exercise\ExerciseType; |
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use PhpSchool\PhpWorkshop\ExerciseCheck\DatabaseExerciseCheck; |
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use PhpSchool\PhpWorkshop\ExerciseDispatcher; |
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use PhpSchool\PhpWorkshop\SubmissionPatch; |
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use Symfony\Component\Filesystem\Filesystem; |
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/** |
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* Class DatabaseRead |
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* @package PhpSchool\LearnYouPhp\Exercise |
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* @author Michael Woodawrd <[email protected]> |
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* @author Aydin Hassan <[email protected]> |
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*/ |
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class DatabaseRead extends AbstractExercise implements ExerciseInterface, DatabaseExerciseCheck |
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{ |
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/** |
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* @var Generator |
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*/ |
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private $faker; |
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/** |
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* @var array |
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*/ |
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private $randomRecord; |
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/** |
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* @param Generator $faker |
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*/ |
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public function __construct(Generator $faker) |
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{ |
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$this->faker = $faker; |
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} |
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/** |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return 'Database Read'; |
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} |
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/** |
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* @return string |
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*/ |
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public function getDescription() |
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{ |
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return 'Read an SQL databases contents'; |
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} |
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/** |
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* @return array |
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*/ |
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public function getArgs() |
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{ |
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return [$this->randomRecord['name']]; |
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} |
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/** |
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* @param PDO $db |
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* @return void |
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*/ |
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public function seed(PDO $db) |
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{ |
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$db |
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->exec('CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT, age INTEGER, gender TEXT)'); |
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$stmt = $db->prepare('INSERT INTO users (name, age, gender) VALUES (:name, :age, :gender)'); |
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$names = []; |
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for ($i = 0; $i < $this->faker->numberBetween(5, 15); $i++) { |
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$name = $this->faker->name; |
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$age = rand(18, 90); |
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$gender = rand(0, 100) % 2 ? 'male' : 'female'; |
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$stmt->execute([':name' => $name, ':age' => $age, ':gender' => $gender]); |
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$id = $db->lastInsertId(); |
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$names[$id] = $name; |
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} |
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$randomId = array_rand($names); |
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$this->randomRecord = ['id' => $randomId, 'name' => $names[$randomId]]; |
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} |
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/** |
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* @param PDO $db |
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* @return bool |
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*/ |
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public function verify(PDO $db) |
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{ |
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$sql = 'SELECT name FROM users WHERE id = :id'; |
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$stmt = $db->prepare($sql); |
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$stmt->execute([':id' => $this->randomRecord['id']]); |
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$result = $stmt->fetchColumn(); |
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return $result === 'David Attenborough'; |
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} |
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/** |
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* @return ExerciseType |
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*/ |
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public function getType() |
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{ |
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return ExerciseType::CLI(); |
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} |
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/** |
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* @param ExerciseDispatcher $dispatcher |
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*/ |
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public function configure(ExerciseDispatcher $dispatcher) |
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{ |
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$dispatcher->requireListenableCheck(DatabaseCheck::class); |
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} |
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} |
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php-school /
learn-you-php
