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| 1 | +<?php |
| 2 | + |
| 3 | +declare(strict_types=1); |
| 4 | + |
| 5 | +namespace Jose\Component\Checker; |
| 6 | + |
| 7 | +use function array_key_exists; |
| 8 | +use function count; |
| 9 | + |
| 10 | +/** |
| 11 | + * This manager handles as many claim checkers as needed. |
| 12 | + * |
| 13 | + * @see \Jose\Tests\Component\Checker\ClaimCheckerManagerTest |
| 14 | + */ |
| 15 | +class ClaimCheckerManager |
| 16 | +{ |
| 17 | + /** |
| 18 | + * @var ClaimChecker[] |
| 19 | + */ |
| 20 | + private array $checkers = []; |
| 21 | + |
| 22 | + /** |
| 23 | + * @param ClaimChecker[] $checkers |
| 24 | + */ |
| 25 | + public function __construct(array $checkers) |
| 26 | + { |
| 27 | + foreach ($checkers as $checker) { |
| 28 | + $this->add($checker); |
| 29 | + } |
| 30 | + } |
| 31 | + |
| 32 | + /** |
| 33 | + * This method returns all checkers handled by this manager. |
| 34 | + * |
| 35 | + * @return ClaimChecker[] |
| 36 | + */ |
| 37 | + public function getCheckers(): array |
| 38 | + { |
| 39 | + return $this->checkers; |
| 40 | + } |
| 41 | + |
| 42 | + /** |
| 43 | + * This method checks all the claims passed as argument. All claims are checked against the claim checkers. If one |
| 44 | + * fails, the InvalidClaimException is thrown. |
| 45 | + * |
| 46 | + * This method returns an array with all checked claims. It is up to the implementor to decide use the claims that |
| 47 | + * have not been checked. |
| 48 | + * |
| 49 | + * @param string[] $mandatoryClaims |
| 50 | + */ |
| 51 | + public function check(array $claims, array $mandatoryClaims = []): array |
| 52 | + { |
| 53 | + $this->checkMandatoryClaims($mandatoryClaims, $claims); |
| 54 | + $checkedClaims = []; |
| 55 | + foreach ($this->checkers as $claim => $checker) { |
| 56 | + if (array_key_exists($claim, $claims)) { |
| 57 | + $checker->checkClaim($claims[$claim]); |
| 58 | + $checkedClaims[$claim] = $claims[$claim]; |
| 59 | + } |
| 60 | + } |
| 61 | + |
| 62 | + return $checkedClaims; |
| 63 | + } |
| 64 | + |
| 65 | + private function add(ClaimChecker $checker): void |
| 66 | + { |
| 67 | + $claim = $checker->supportedClaim(); |
| 68 | + $this->checkers[$claim] = $checker; |
| 69 | + } |
| 70 | + |
| 71 | + /** |
| 72 | + * @param string[] $mandatoryClaims |
| 73 | + */ |
| 74 | + private function checkMandatoryClaims(array $mandatoryClaims, array $claims): void |
| 75 | + { |
| 76 | + if (count($mandatoryClaims) === 0) { |
| 77 | + return; |
| 78 | + } |
| 79 | + $diff = array_keys(array_diff_key(array_flip($mandatoryClaims), $claims)); |
| 80 | + if (count($diff) !== 0) { |
| 81 | + throw new MissingMandatoryClaimException(sprintf( |
| 82 | + 'The following claims are mandatory: %s.', |
| 83 | + implode(', ', $diff) |
| 84 | + ), $diff); |
| 85 | + } |
| 86 | + } |
| 87 | +} |
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