feat: Add OpenAI Responses API (#282)

* feat: Add OpenAI Responses API

* fix: Make temperature optional

* chore: Increase default value of max tokens

providers/OpenAIResponses/ListInputItemsRequest.hpp

@@ -0,0 +1,166 @@
+/* 
+ * Copyright (C) 2024-2025 Petr Mironychev
+ *
+ * This file is part of QodeAssist.
+ *
+ * QodeAssist is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * QodeAssist is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with QodeAssist. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QJsonArray>
+#include <QJsonObject>
+#include <QString>
+#include <QStringList>
+#include <optional>
+
+namespace QodeAssist::OpenAIResponses {
+
+enum class SortOrder { Ascending, Descending };
+
+struct ListInputItemsRequest
+{
+    QString responseId;
+    std::optional<QString> after;
+    std::optional<QStringList> include;
+    std::optional<int> limit;
+    std::optional<SortOrder> order;
+
+    QString buildUrl(const QString &baseUrl) const
+    {
+        QString url = QString("%1/v1/responses/%2/input_items").arg(baseUrl, responseId);
+        QStringList queryParams;
+
+        if (after) {
+            queryParams.append(QString("after=%1").arg(*after));
+        }
+
+        if (include && !include->isEmpty()) {
+            for (const auto &item : *include) {
+                queryParams.append(QString("include=%1").arg(item));
+            }
+        }
+
+        if (limit) {
+            queryParams.append(QString("limit=%1").arg(*limit));
+        }
+
+        if (order) {
+            QString orderStr = (*order == SortOrder::Ascending) ? "asc" : "desc";
+            queryParams.append(QString("order=%1").arg(orderStr));
+        }
+
+        if (!queryParams.isEmpty()) {
+            url += "?" + queryParams.join("&");
+        }
+
+        return url;
+    }
+
+    bool isValid() const
+    {
+        if (responseId.isEmpty()) {
+            return false;
+        }
+
+        if (limit && (*limit < 1 || *limit > 100)) {
+            return false;
+        }
+
+        return true;
+    }
+};
+
+class ListInputItemsRequestBuilder
+{
+public:
+    ListInputItemsRequestBuilder &setResponseId(const QString &id)
+    {
+        m_request.responseId = id;
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &setAfter(const QString &itemId)
+    {
+        m_request.after = itemId;
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &setInclude(const QStringList &include)
+    {
+        m_request.include = include;
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &addInclude(const QString &item)
+    {
+        if (!m_request.include) {
+            m_request.include = QStringList();
+        }
+        m_request.include->append(item);
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &setLimit(int limit)
+    {
+        m_request.limit = limit;
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &setOrder(SortOrder order)
+    {
+        m_request.order = order;
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &setAscendingOrder()
+    {
+        m_request.order = SortOrder::Ascending;
+        return *this;
+    }
+
+    ListInputItemsRequestBuilder &setDescendingOrder()
+    {
+        m_request.order = SortOrder::Descending;
+        return *this;
+    }
+
+    ListInputItemsRequest build() const { return m_request; }
+
+private:
+    ListInputItemsRequest m_request;
+};
+
+struct ListInputItemsResponse
+{
+    QJsonArray data;
+    QString firstId;
+    QString lastId;
+    bool hasMore = false;
+    QString object;
+
+    static ListInputItemsResponse fromJson(const QJsonObject &obj)
+    {
+        ListInputItemsResponse result;
+        result.data = obj["data"].toArray();
+        result.firstId = obj["first_id"].toString();
+        result.lastId = obj["last_id"].toString();
+        result.hasMore = obj["has_more"].toBool();
+        result.object = obj["object"].toString();
+        return result;
+    }
+};
+
+} // namespace QodeAssist::OpenAIResponses
+