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<?php declare(strict_types=1); |
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namespace Stratadox\CardGame\Match; |
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use DateTimeInterface; |
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use Stratadox\CardGame\DomainEvent; |
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use Stratadox\CardGame\Match\Event\AttackPhaseStarted; |
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use Stratadox\CardGame\Match\Event\DefendPhaseStarted; |
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use Stratadox\CardGame\Match\Event\PlayPhaseStarted; |
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final class TurnPhase |
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{ |
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private const DEFEND = 0; |
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private const PLAY = 1; |
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private const ATTACK = 2; |
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private const ALLOWED_TIME_FOR = [ |
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self::DEFEND => 20, |
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self::PLAY => 20, |
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self::ATTACK => 10, |
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]; |
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/** @var int */ |
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private $phase; |
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/** @var DateTimeInterface */ |
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private $since; |
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/** @var DomainEvent[] */ |
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private $events; |
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private function __construct( |
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int $phase, |
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DateTimeInterface $since, |
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DomainEvent ...$events |
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) { |
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$this->phase = $phase; |
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$this->since = $since; |
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$this->events = $events; |
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} |
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public static function defendOrPlay( |
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bool $shouldWeDefend, |
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DateTimeInterface $now, |
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MatchId $match |
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): self { |
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return $shouldWeDefend ? |
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self::defend($now, $match) : |
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self::play($now, $match); |
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} |
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public static function play(DateTimeInterface $now, MatchId $match): self |
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{ |
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return new self(TurnPhase::PLAY, $now, new PlayPhaseStarted($match)); |
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} |
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private static function defend(DateTimeInterface $now, MatchId $match): self |
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{ |
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return new self(TurnPhase::DEFEND, $now, new DefendPhaseStarted($match)); |
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} |
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public function prohibitsDefending(DateTimeInterface $now): bool |
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{ |
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return $this->phase !== TurnPhase::DEFEND || $this->hasExpired($now); |
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} |
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public function prohibitsPlaying(DateTimeInterface $now): bool |
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{ |
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return $this->phase !== TurnPhase::PLAY || $this->hasExpired($now); |
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} |
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public function prohibitsAttacking(DateTimeInterface $now): bool |
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{ |
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return $this->phase !== TurnPhase::ATTACK || $this->hasExpired($now); |
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} |
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public function prohibitsCombat(): bool |
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{ |
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return $this->phase !== TurnPhase::DEFEND; |
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} |
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public function isAfterCombat(): bool |
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{ |
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return $this->phase === TurnPhase::PLAY |
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|| $this->phase === TurnPhase::ATTACK; |
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} |
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public function hasExpired(DateTimeInterface $now): bool |
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{ |
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return $this->isTooFarApart( |
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$now->getTimestamp(), |
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$this->since->getTimestamp() |
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); |
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} |
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public function startPlay(DateTimeInterface $now, MatchId $match): TurnPhase |
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{ |
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return new self(TurnPhase::PLAY, $now, new PlayPhaseStarted($match)); |
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} |
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public function startAttack(DateTimeInterface $now, MatchId $match): TurnPhase |
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{ |
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return new self(TurnPhase::ATTACK, $now, new AttackPhaseStarted($match)); |
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} |
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/** @throws NoNextPhase|NeedCombatFirst */ |
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public function next(DateTimeInterface $now, MatchId $match): TurnPhase |
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{ |
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switch ($this->phase) { |
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case self::DEFEND: throw NeedCombatFirst::cannotJustSwitchPhase(); |
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case self::PLAY: return $this->startAttack($now, $match); |
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default: throw NoNextPhase::available(); |
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} |
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} |
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public function events(): array |
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{ |
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return $this->events; |
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} |
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private function isTooFarApart(int $nowTime, int $backThenTime): bool |
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{ |
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return $nowTime - $backThenTime >= self::ALLOWED_TIME_FOR[$this->phase]; |
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} |
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} |
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According to the PSR-2, the body of a case statement must start on the line immediately following the case statement.
}
To learn more about the PSR-2 coding standard, please refer to the PHP-Fig.