/**
 * @file    bsp_relay.h
 * @brief   Relay control driver (LIGHT & FAN)
 * @details Low level effective (low level = ON)
 */

#ifndef __BSP_RELAY_H
#define __BSP_RELAY_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Exported defines ----------------------------------------------------------*/
#define RELAY_ON  GPIO_PIN_RESET   // Low level activates relay
#define RELAY_OFF GPIO_PIN_SET     // High level deactivates relay

/* Exported types ------------------------------------------------------------*/
typedef enum {
    FAN_MODE_MANUAL = 0,  // Manual control
    FAN_MODE_AUTO = 1    // Auto control by temperature
} fan_mode_t;

typedef struct {
    fan_mode_t fan_mode;    // FAN mode: manual or auto
    float fan_threshold;     // Temperature threshold for auto mode (Celsius)
    uint8_t light_state;    // LIGHT state: 0=off, 1=on
    uint8_t fan_state;      // FAN state: 0=off, 1=on
} system_state_t;

/* Exported functions prototypes --------------------------------------------*/
void BSP_Relay_Init(void);
void BSP_LIGHT_On(void);
void BSP_LIGHT_Off(void);
void BSP_LIGHT_Toggle(void);
uint8_t BSP_LIGHT_GetState(void);

void BSP_FAN_On(void);
void BSP_FAN_Off(void);
void BSP_FAN_Toggle(void);
uint8_t BSP_FAN_GetState(void);

/* Auto control functions (for temperature-based fan control) -------------*/
void BSP_FAN_SetMode(fan_mode_t mode);
fan_mode_t BSP_FAN_GetMode(void);
void BSP_FAN_SetThreshold(float threshold);
float BSP_FAN_GetThreshold(void);
void BSP_FAN_AutoControl(float current_temp);

/* System state --------------------------------------------------------------*/
void BSP_System_GetState(system_state_t *state);

#ifdef __cplusplus
}
#endif

#endif /* __BSP_RELAY_H */