feature/enhance-event-listener

[RamyHakam]

This pull request refactors the DbSwitchEventListener to improve its design, simplify dependency injection, and enhance testing. The most important changes include replacing the use of ContainerInterface with ManagerRegistry, updating event handling logic, and modernizing the class implementation and its tests.

Refactoring and Dependency Injection:

• Replaced the dependency on ContainerInterface with ManagerRegistry in DbSwitchEventListener, allowing direct access to Doctrine connections and improving type safety and clarity. (src/EventListener/DbSwitchEventListener.php)
• Updated the constructor and all usages to inject ManagerRegistry directly, removing unnecessary container access. (src/EventListener/DbSwitchEventListener.php, tests/Unit/EventListener/DbSwitchEventListenerTest.php) [1] [2]

Event Handling Improvements:

• Renamed the event handler method from onHakamMultiTenancyBundleEventSwitchDbEvent to onSwitchDb and updated the event subscription mapping for clarity and consistency. (src/EventListener/DbSwitchEventListener.php, tests/Unit/EventListener/DbSwitchEventListenerTest.php) [1] [2]
• Improved tenant switching logic by tracking only the current tenant identifier and database name, and skipping redundant switches if the tenant hasn't changed. (src/EventListener/DbSwitchEventListener.php)

Testing Updates:

• Refactored unit tests to use ManagerRegistry mocks instead of container mocks, simplifying test setup and expectations. (tests/Unit/EventListener/DbSwitchEventListenerTest.php) [1] [2] [3] [4] [5]
• Updated test method names and event dispatches to match the new handler and event subscription. (tests/Unit/EventListener/DbSwitchEventListenerTest.php) [1] [2] [3] [4]

Code Modernization:

• Converted DbSwitchEventListener to a final class and implemented ResetInterface for better lifecycle management and compatibility with Symfony's service reset mechanism. (src/EventListener/DbSwitchEventListener.php)
• Extracted connection parameter building into a dedicated method for improved readability and maintainability. (src/EventListener/DbSwitchEventListener.php)