#ifndef THEMEMANAGER_H
#define THEMEMANAGER_H

#include <QObject>
#include <QHash>
#include "IThemePlugin.h"

// ============================================================
// ThemeManager — 主题管理器
//
// 管理主题插件的注册、切换和应用。
// 在 AppController 初始化时创建，MainWindow 通过它设置主题。
// ============================================================
class ThemeManager : public QObject
{
    Q_OBJECT
public:
    explicit ThemeManager(QObject *parent = nullptr);

    void registerTheme(IThemePlugin *theme);
    void setCurrentTheme(const QString &name);
    IThemePlugin *currentTheme() const { return m_current; }
    QStringList themeNames() const;
    IThemePlugin *theme(const QString &name) const;

    void applyToApplication(QApplication *app);

signals:
    void themeChanged(const QString &name);

private:
    QHash<QString, IThemePlugin*> m_themes;
    IThemePlugin *m_current = nullptr;
};

#endif