feat: implement HttpHandler and WifiHandler classes for network management

main/network/http_handler.cpp

@@ -0,0 +1,51 @@
+#include "network/http_handler.h"
+#include "esp_http_client.h"
+#include "esp_log.h"
+#include "string.h"
+
+HttpHandler::HttpHandler(const esp_http_client_config_t&& config, WifiHandler* wifiHandler)
+  : wifiHandler(wifiHandler) {
+  this->client = esp_http_client_init(&config);
+}
+
+HttpHandler::~HttpHandler() {
+  if (this->client) {
+    esp_http_client_cleanup(this->client);
+  }
+}
+
+esp_err_t HttpHandler::set_method(esp_http_client_method_t method) {
+  return esp_http_client_set_method(this->client, method);
+}
+
+esp_err_t HttpHandler::set_header(const char* header, const char* value) {
+  return esp_http_client_set_header(this->client, header, value);
+}
+
+esp_err_t HttpHandler::set_post_field(const char* field, size_t len) {
+  return esp_http_client_set_post_field(this->client, field, len);
+}
+
+esp_err_t HttpHandler::perform_request() {
+  return esp_http_client_perform(this->client);
+}
+
+void HttpHandler::get_body(
+  char*& buffer,
+  int& total_len
+) {
+  total_len = esp_http_client_get_content_length(this->client);
+  buffer = new char[total_len + 1]; // +1 for null-terminator
+  if (buffer) {
+    int read_len = esp_http_client_read(this->client, buffer, total_len);
+    if (read_len >= 0) {
+      buffer[read_len] = '\0'; // null-terminate
+    } else {
+      delete[] buffer;
+      buffer = nullptr;
+      total_len = 0;
+    }
+  } else {
+    total_len = 0;
+  }
+}