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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace App\Domain\Notification\Service; |
| 6 | |
| 7 | use App\Domain\Notification\Data\NotificationType; |
| 8 | use App\Domain\Notification\Repository\NotificationPreferenceRepositoryInterface; |
| 9 | use InvalidArgumentException; |
| 10 | |
| 11 | /** |
| 12 | * Application logic for reading and writing a user's notification preferences. |
| 13 | * |
| 14 | * Hides two things from callers: (1) which types apply to a given role |
| 15 | * (admins see admin.* only — investor.* not yet implemented anyway), and |
| 16 | * (2) the "default OFF for unset types" view, so the GET endpoint always |
| 17 | * returns the full set of toggles for the role. |
| 18 | */ |
| 19 | final readonly class NotificationPreferenceService |
| 20 | { |
| 21 | public function __construct( |
| 22 | private NotificationPreferenceRepositoryInterface $repository, |
| 23 | ) {} |
| 24 | |
| 25 | /** |
| 26 | * Return the user's preferences with every applicable type included — |
| 27 | * unset types are reported as `enabled: false`. Frontend renders this |
| 28 | * as a complete toggle list without having to know what's "missing". |
| 29 | * |
| 30 | * @param int $userId |
| 31 | * @param string $userRole |
| 32 | * @return list<array{notificationType: string, channel: string, enabled: bool}> |
| 33 | */ |
| 34 | public function getPreferencesForUser(int $userId, string $userRole): array |
| 35 | { |
| 36 | $applicableTypes = $this->applicableTypesForRole($userRole); |
| 37 | $stored = $this->repository->getByUserId($userId); |
| 38 | |
| 39 | // Map of "type|channel" => enabled, for quick lookup |
| 40 | $storedMap = []; |
| 41 | foreach ($stored as $pref) { |
| 42 | $storedMap[$pref->notificationType . '|' . $pref->channel] = $pref->enabled; |
| 43 | } |
| 44 | |
| 45 | $result = []; |
| 46 | foreach ($applicableTypes as $type) { |
| 47 | $key = $type . '|' . NotificationType::CHANNEL_EMAIL; |
| 48 | $result[] = [ |
| 49 | 'notificationType' => $type, |
| 50 | 'channel' => NotificationType::CHANNEL_EMAIL, |
| 51 | 'enabled' => $storedMap[$key] ?? false, |
| 52 | ]; |
| 53 | } |
| 54 | |
| 55 | return $result; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Bulk-update a user's preferences. Types outside the user's applicable |
| 60 | * set are rejected to prevent privilege escalation (e.g., an investor |
| 61 | * toggling admin.* preferences). Shape of each entry is enforced at |
| 62 | * the action boundary; this method trusts the typed array. |
| 63 | * |
| 64 | * @param list<array{notificationType: string, channel: string, enabled: bool}> $preferences |
| 65 | * @param int $userId |
| 66 | * @param string $userRole |
| 67 | */ |
| 68 | public function updatePreferences(int $userId, string $userRole, array $preferences): void |
| 69 | { |
| 70 | $applicableTypes = $this->applicableTypesForRole($userRole); |
| 71 | $applicableSet = array_flip($applicableTypes); |
| 72 | |
| 73 | foreach ($preferences as $pref) { |
| 74 | if (!isset($applicableSet[$pref['notificationType']])) { |
| 75 | throw new InvalidArgumentException(sprintf( |
| 76 | 'Notification type "%s" is not available for role "%s".', |
| 77 | $pref['notificationType'], |
| 78 | $userRole, |
| 79 | )); |
| 80 | } |
| 81 | |
| 82 | if ($pref['channel'] !== NotificationType::CHANNEL_EMAIL) { |
| 83 | throw new InvalidArgumentException(sprintf('Channel "%s" is not supported.', $pref['channel'])); |
| 84 | } |
| 85 | |
| 86 | $this->repository->upsert($userId, $pref['notificationType'], $pref['channel'], $pref['enabled']); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @param string $userRole |
| 92 | * @return list<string> |
| 93 | */ |
| 94 | private function applicableTypesForRole(string $userRole): array |
| 95 | { |
| 96 | if (in_array($userRole, ['admin', 'super_admin'], true)) { |
| 97 | return NotificationType::adminTypes(); |
| 98 | } |
| 99 | |
| 100 | // Investor role has no applicable types in PR A — investor.* will |
| 101 | // be added in a later iteration. |
| 102 | return []; |
| 103 | } |
| 104 | } |