Fix message extraction logic and add missing model.hpp file to getFiles for C++ SDK

Author: bhardwajparth51

examples/cpp/include/appwrite/exception.hpp

@@ -11,11 +11,11 @@ class Exception : public std::exception {
     Exception(const std::string& message, int code = 0, const std::string& response = "", const std::string& type = "")
         : message_(message), code_(code), response_(response), type_(type) {
 
-        if (type_.empty() || message_ == response_) {
+        if (type_.empty() || message_.empty()) {
             try {
                 if (!response_.empty() && response_.front() == '{') {
                     auto json = nlohmann::json::parse(response_);
-                    if (json.contains("message") && json["message"].is_string() && message_ == response_) {
+                    if (json.contains("message") && json["message"].is_string() && message_.empty()) {
                         message_ = json["message"].get<std::string>();
                     }
                     if (json.contains("type") && json["type"].is_string() && type_.empty()) {

examples/cpp/include/appwrite/model.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <optional>
+#include <nlohmann/json.hpp>
+
+namespace appwrite {
+
+class Model {
+public:
+    virtual ~Model() = default;
+    virtual nlohmann::json toJson() const = 0;
+};
+
+} // namespace appwrite

src/SDK/Language/Cpp.php

@@ -159,6 +159,11 @@ public function getFiles(): array
                 'destination'   => 'include/appwrite/services/{{ service.name | caseSnake }}.hpp',
                 'template'      => 'cpp/include/services/service.hpp.twig',
             ],
+            [
+                'scope'         => 'default',
+                'destination'   => 'include/appwrite/model.hpp',
+                'template'      => 'cpp/include/model.hpp.twig',
+            ],
             [
                 'scope'         => 'definition',
                 'destination'   => 'include/appwrite/models/{{ definition.name | caseSnake }}.hpp',

templates/cpp/include/exception.hpp.twig

@@ -11,11 +11,11 @@ public:
     Exception(const std::string& message, int code = 0, const std::string& response = "", const std::string& type = "")
         : message_(message), code_(code), response_(response), type_(type) {
 
-        if (type_.empty() || message_ == response_) {
+        if (type_.empty() || message_.empty()) {
             try {
                 if (!response_.empty() && response_.front() == '{') {
                     auto json = nlohmann::json::parse(response_);
-                    if (json.contains("message") && json["message"].is_string() && message_ == response_) {
+                    if (json.contains("message") && json["message"].is_string() && message_.empty()) {
                         message_ = json["message"].get<std::string>();
                     }
                     if (json.contains("type") && json["type"].is_string() && type_.empty()) {