#include "wifi_storage.h"
#include "wifi_storage_priv.h"
#include "wt_nvs.h"

#include <stdio.h>

#define WIFI_NVS_NAMESPACE "wt_wifi"

int wifi_data_get_last_conn_cred(wifi_credential_t *ap_credential)
{
	uint32_t ap_bitmap = 0;
	nvs_handle_t handle;
	int err;

	err = wt_nvs_open(WIFI_NVS_NAMESPACE, &handle);
	if (err) {
		return WT_NVS_ERR;
	}

	err = wt_nvs_get(handle, KEY_WIFI_STA_AP_BITMAP, &ap_bitmap, sizeof(ap_bitmap));
	if (err || ap_bitmap == 0) {
		return WT_NVS_ERR_NOT_FOUND;
	}

	err = wt_nvs_get(handle, KEY_WIFI_STA_LAST_AP_CRED,
					 ap_credential, sizeof(wifi_credential_t));
	if (err) {
		return WT_NVS_ERR;
	}

	wt_nvs_close(handle);
	return WT_NVS_OK;
}

/*
 * Called when connect to an AP,
 */
int wifi_save_ap_credential(wifi_credential_t *ap_credential)
{
	uint32_t ap_bitmap;
	int err;
	nvs_handle_t handle;

	err = wt_nvs_open(WIFI_NVS_NAMESPACE, &handle);
	if (err) {
		return err;
	}

	err = wt_nvs_get(handle, KEY_WIFI_STA_AP_BITMAP, &ap_bitmap, sizeof(ap_bitmap));
	if (err) {
		if (err != ESP_ERR_NVS_NOT_FOUND) {
			return err;
		}
		ap_bitmap = 0;
	}
	if (ap_bitmap == 0) {
		ap_bitmap = 1;
		err = wt_nvs_set(handle, KEY_WIFI_STA_AP_BITMAP, &ap_bitmap, sizeof(ap_bitmap));
	}


	wifi_credential_t credential;
	err = wt_nvs_get(handle, KEY_WIFI_STA_LAST_AP_CRED, &credential, sizeof(ap_bitmap));
	if (err) {
		if (err != ESP_ERR_NVS_NOT_FOUND) {
			return err;
		}
	}

	err = wt_nvs_set(handle, KEY_WIFI_STA_LAST_AP_CRED, ap_credential, sizeof(wifi_credential_t));
	if (err) {
		return err;
	}

	wt_nvs_close(handle);
	return WT_NVS_OK;
}