#include "can_config.h"

// 初始化静态成员变量
CanConfig* CanConfig::instance = nullptr;
osMutexId_t CanConfig::mutex = nullptr;

class CanConfigHelper
{
public:
	CanConfigHelper()
	{
		osMutexAttr_t attr;
		attr.name = "CanConfigMutex";
		attr.attr_bits = 0U;
		attr.cb_mem = nullptr;
		attr.cb_size = 0U;
		// attr.stack_mem = nullptr;
		// attr.stack_size = 0U;
		// attr.priority = osPriorityNormal;

		CanConfig::mutex = osMutexNew(&attr);
		if (CanConfig::mutex == nullptr) {
			// 处理互斥锁创建失败的情况
		}
	}
	~CanConfigHelper()
	{
		if (CanConfig::mutex != nullptr) {
			// 释放互斥锁
			osMutexDelete(CanConfig::mutex);
			CanConfig::mutex = nullptr;
		}
	}
};

CanConfigHelper can_config_helper;

// 私有构造函数实现
CanConfig::CanConfig() : can_frame_id(0) {
}

// 静态方法，获取单例实例
CanConfig* CanConfig::getInstance() {
    // 双重检查锁定，提高性能
    if (instance == nullptr) {
        // 获取互斥锁
    	osMutexAcquire(mutex, osWaitForever);
        if (instance == nullptr) {
            instance = new CanConfig();
        }
        // 释放互斥锁
        osMutexRelease(mutex);
    }
    return instance;
}

// 设置 CAN 帧 ID
void CanConfig::setCanFrameId(uint32_t id) {
    can_frame_id = id;
}

// 获取 CAN 帧 ID
uint32_t CanConfig::getCanFrameId() const {
    return can_frame_id * CAN_FRAME_RANGE;
}