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<?php |
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namespace App\Service; |
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use App\Card\BlackJack; |
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/** |
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* Service class for BlackJack game handling the input from post. |
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* |
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* This class validates user input and bets. |
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* |
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*/ |
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class GameBlackJackValidateService |
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{ |
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/** |
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* Validate the bet amount against game state. |
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* |
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* @param BlackJack|null $blackJack The current game instance. |
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* @param int $betAmount The amount to bet. |
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* @param int $numHands Number of hands to play in new round. |
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* @return string|null Error message if validation fails, otherwise null. |
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*/ |
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public function validateBet(?BlackJack $blackJack, int $betAmount, int $numHands = 1): ?string |
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{ |
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if ($betAmount <= 0) { |
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return 'Invalid bet amount.'; |
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} |
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// If no game exists yet, assume starting balance 1000 |
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$balance = $blackJack ? $blackJack->getBalance() : 1000; |
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$totalBet = $betAmount * $numHands; |
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if ($totalBet > $balance) { |
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return 'Your bet exceeds your current balance.'; |
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} |
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return null; |
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} |
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/** |
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* Validate input from request. |
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* |
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* @param array<string, string> $data |
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* @return array{playerName: string, betAmount: int, numHands: int}|string |
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*/ |
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public function validateInput(array $data): array|string |
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{ |
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// Extract and validate input from POST |
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$playerName = trim((string) ($data['playerName'] ?? '')); |
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$betAmount = (int) ($data['betAmount'] ?? 0); |
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$numHands = (int) ($data['numHands'] ?? 1); |
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if ($playerName === '' || $betAmount <= 0 || $numHands < 1 || $numHands > 3) { |
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return "Invalid input."; |
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} |
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return [ |
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'playerName' => $playerName, |
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'betAmount' => $betAmount, |
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'numHands' => $numHands, |
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]; |
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} |
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} |
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Veddan12 /
mvc
