refactor: Replace singletone for context manager (#151)

context/IContextManager.hpp

@@ -0,0 +1,49 @@
+/* 
+ * Copyright (C) 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 <QObject>
+#include <QString>
+
+#include "ContentFile.hpp"
+#include "IDocumentReader.hpp"
+#include "ProgrammingLanguage.hpp"
+
+namespace ProjectExplorer {
+class Project;
+}
+
+namespace QodeAssist::Context {
+
+class IContextManager
+{
+public:
+    virtual ~IContextManager() = default;
+
+    virtual QString readFile(const QString &filePath) const = 0;
+    virtual QList<ContentFile> getContentFiles(const QStringList &filePaths) const = 0;
+    virtual QStringList getProjectSourceFiles(ProjectExplorer::Project *project) const = 0;
+    virtual ContentFile createContentFile(const QString &filePath) const = 0;
+
+    virtual ProgrammingLanguage getDocumentLanguage(const DocumentInfo &documentInfo) const = 0;
+    virtual bool isSpecifyCompletion(const DocumentInfo &documentInfo) const = 0;
+};
+
+} // namespace QodeAssist::Context