ExitGateController.h

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#pragma once
 
#include "IEventBus.h"
#include "IGate.h"
#include "ITicketService.h"
#include "freertos/FreeRTOS.h"
#include "freertos/timers.h"
#include <memory>
 
enum class ExitGateState {
    Idle,
    ValidatingTicket,
    OpeningBarrier,
    WaitingForCarToPass,
    CarPassing,
    WaitingBeforeClose,
    ClosingBarrier
};
 
class ExitGateController {
  public:
    ExitGateController(
        IEventBus& eventBus,
        IGate& gate,
        ITicketService& ticketService,
        uint32_t barrierTimeoutMs = 2000,
        uint32_t validationTimeMs = 500);
 
    ~ExitGateController();
 
    // Prevent copying
    ExitGateController(const ExitGateController&) = delete;
    ExitGateController& operator=(const ExitGateController&) = delete;
 
    [[nodiscard]] ExitGateState getState() const { return m_state; }
 
    [[nodiscard]] const char* getStateString() const;
 
    [[nodiscard]] IGate& getGate() { return *m_gate; }
 
    bool validateTicketManually(uint32_t ticketId);
 
    void setupGpioInterrupts();
 
    void reset();
 
#ifdef UNIT_TEST
    // Test helpers to simulate timer expirations without FreeRTOS timers
    void TEST_forceBarrierTimeout() {
        onBarrierTimeout();
    }
    void TEST_forceValidationTimeout() {
        onValidationTimeout();
    }
#endif
 
  private:
    void onLightBarrierBlocked(const Event& event);
    void onLightBarrierCleared(const Event& event);
    void onBarrierTimeout();
    void onValidationTimeout();
 
    void setState(ExitGateState newState);
    void startBarrierTimer();
    void stopBarrierTimer();
    void startValidationTimer();
    void stopValidationTimer();
 
    static void barrierTimerCallback(TimerHandle_t xTimer);
    static void validationTimerCallback(TimerHandle_t xTimer);
 
    IEventBus& m_eventBus;
    IGate* m_gate;
    ITicketService& m_ticketService;
 
    ExitGateState m_state;
    uint32_t m_barrierTimeoutMs;
    uint32_t m_validationTimeMs;
    uint32_t m_currentTicketId;
    TimerHandle_t m_barrierTimer;
    TimerHandle_t m_validationTimer;
};