#include <endian.h>
#include <string.h>

#include "libpldm/host.h"

int encode_get_alert_status_req(uint8_t instance_id, uint8_t version_id,
				struct pldm_msg *msg, size_t payload_length)
{
	if (msg == NULL) {
		return PLDM_ERROR_INVALID_LENGTH;
	}

	if (payload_length != PLDM_GET_ALERT_STATUS_REQ_BYTES) {
		return PLDM_ERROR_INVALID_LENGTH;
	}

	struct pldm_header_info header = {0};
	header.msg_type = PLDM_REQUEST;
	header.instance = instance_id;
	header.pldm_type = PLDM_OEM;
	header.command = PLDM_HOST_GET_ALERT_STATUS;
	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
	if (rc != PLDM_SUCCESS) {
		return rc;
	}

	msg->payload[0] = version_id;

	return PLDM_SUCCESS;
}

int decode_get_alert_status_resp(const struct pldm_msg *msg,
				 size_t payload_length,
				 uint8_t *completion_code, uint32_t *rack_entry,
				 uint32_t *pri_cec_node)
{
	if (msg == NULL || completion_code == NULL || rack_entry == NULL ||
	    pri_cec_node == NULL) {
		return PLDM_ERROR_INVALID_DATA;
	}

	*completion_code = msg->payload[0];
	if (PLDM_SUCCESS != *completion_code) {
		return PLDM_SUCCESS;
	}

	if (payload_length != PLDM_GET_ALERT_STATUS_RESP_BYTES) {
		return PLDM_ERROR_INVALID_LENGTH;
	}

	struct pldm_get_alert_status_resp *response =
	    (struct pldm_get_alert_status_resp *)msg->payload;

	*rack_entry = le32toh(response->rack_entry);
	*pri_cec_node = le32toh(response->pri_cec_node);

	return PLDM_SUCCESS;
}

int decode_get_alert_status_req(const struct pldm_msg *msg,
				size_t payload_length, uint8_t *version_id)
{
	if (msg == NULL || version_id == NULL) {
		return PLDM_ERROR_INVALID_DATA;
	}

	if (payload_length != PLDM_GET_ALERT_STATUS_REQ_BYTES) {
		return PLDM_ERROR_INVALID_LENGTH;
	}

	*version_id = msg->payload[0];

	return PLDM_SUCCESS;
}

int encode_get_alert_status_resp(uint8_t instance_id, uint8_t completion_code,
				 uint32_t rack_entry, uint32_t pri_cec_node,
				 struct pldm_msg *msg, size_t payload_length)
{
	if (msg == NULL) {
		return PLDM_ERROR_INVALID_LENGTH;
	}

	if (payload_length != PLDM_GET_ALERT_STATUS_RESP_BYTES) {
		return PLDM_ERROR_INVALID_DATA;
	}

	struct pldm_header_info header = {0};
	header.msg_type = PLDM_RESPONSE;
	header.instance = instance_id;
	header.pldm_type = PLDM_OEM;
	header.command = PLDM_HOST_GET_ALERT_STATUS;
	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
	if (rc != PLDM_SUCCESS) {
		return rc;
	}

	struct pldm_get_alert_status_resp *response =
	    (struct pldm_get_alert_status_resp *)msg->payload;

	response->completion_code = completion_code;
	response->rack_entry = htole32(rack_entry);
	response->pri_cec_node = htole32(pri_cec_node);

	return PLDM_SUCCESS;
}