Decode firmware update information

esp32_device/main/sync_response.c

@@ -1,12 +1,14 @@
 #include "sync_response.h"
 
 #include <stdlib.h>
+#include <string.h>
 #include <esp_log.h>
 
 const static char *TAG = "sync_response";
 
 sync_response *sync_response_parse(cJSON *res)
 {
+    // Parse relays information
     cJSON *relays_json = cJSON_GetObjectItem(res, "relays");
     if (relays_json == NULL)
     {
@@ -45,12 +47,26 @@ sync_response *sync_response_parse(cJSON *res)
         }
     }
 
+    // Parse firmware update information
+    cJSON *update = cJSON_GetObjectItem(res, "available_update");
+    if (update != NULL)
+    {
+        char *val = cJSON_GetStringValue(update);
+        sync_res->available_update = val != NULL ? strdup(val) : NULL;
+    }
+
     return sync_res;
 }
 
 void sync_response_print(sync_response *res)
 {
     ESP_LOGI(TAG, " === sync response begin === ");
+
+    if (res->available_update != NULL)
+    {
+        ESP_LOGI(TAG, "> AVAILABLE UPDATE! Version %s", res->available_update);
+    }
+
     ESP_LOGI(TAG, "# of relays: %d", res->len);
     for (size_t i = 0; i < res->len; i++)
         ESP_LOGI(TAG, "Relay[%d]=%s", i, res->relays[i] ? "ON" : "off");
@@ -59,7 +75,12 @@ void sync_response_print(sync_response *res)
 
 void sync_response_free(sync_response *res)
 {
-    if (res != NULL)
+    if (res == NULL)
+        return;
+
+    if (res->available_update != NULL)
+        free(res->available_update);
+
     free(res);
 }
 

esp32_device/main/sync_response.h

@@ -16,6 +16,7 @@ extern "C"
     typedef struct sync_response
     {
         size_t len;
+        char *available_update;
         bool relays[];
     } sync_response;