#include "new_http.h"
#include "../cJSON/cJSON.h"
#include "../new_pins.h"
#include "../mqtt/new_mqtt.h"

typedef enum {
	ENTITY_RELAY = 0,
    ENTITY_LIGHT = 1
} ENTITY_TYPE;

//unique_id is based on CFG_GetDeviceName() whose size is CGF_DEVICE_NAME_SIZE (see hass_populate_unique_id)
#define HASS_UNIQUE_ID_SIZE     (CGF_DEVICE_NAME_SIZE + 1 + 5 + 1 + 4)

//channel is based on unique_id (see hass_populate_device_config_channel)
#define HASS_CHANNEL_SIZE       (HASS_UNIQUE_ID_SIZE + 32)

//Size of JSON (1 less than MQTT queue holding)
#define HASS_JSON_SIZE          (MQTT_PUBLISH_ITEM_VALUE_LENGTH - 1)

/// @brief HomeAssistant device discovery information
typedef struct HassDeviceInfo_s{
    char unique_id[HASS_UNIQUE_ID_SIZE];
    char channel[HASS_CHANNEL_SIZE];
    char json[HASS_JSON_SIZE];

    cJSON *root;
    cJSON *device;
    cJSON *ids;
} HassDeviceInfo;

void hass_print_unique_id(http_request_t *request, const char *fmt, ENTITY_TYPE type, int index);
HassDeviceInfo *hass_init_device_info(ENTITY_TYPE type, int index, char *payload_on, char *payload_off);
char *hass_build_discovery_json(HassDeviceInfo *info);
void hass_free_device_info(HassDeviceInfo *info);