// node_config.h — Simplified INI config manager for embedded uTun node
#ifndef NODE_CONFIG_H
#define NODE_CONFIG_H

#include <QString>
#include <QStringList>
#include <QList>
#include <QPair>

struct NodeClient {
    QString name;
    QString pubKeyHex;
    QString serverName;
    QString remoteAddr;
};

class NodeConfig {
public:
    explicit NodeConfig(const QString& path);

    bool exists() const;
    bool create(const QString& nodeName, quint16 listenPort);
    bool load();
    bool save();

    QString nodeName() const { return m_nodeName; }
    void setNodeName(const QString& n) { m_nodeName = n; }
    QString nodeId() const { return m_nodeId; }
    QString pubKey() const { return m_pubKey; }
    QString privKey() const { return m_privKey; }
    uint64_t nodeIdU64() const;

    QList<QPair<QString,QString>> servers() const { return m_servers; }
    bool addServer(const QString& name, const QString& addr);
    bool removeServer(const QString& name);

    QList<NodeClient> clients() const { return m_clients; }
    bool addClient(const QString& name, const QString& pubKeyHex,
                   const QString& serverName, const QString& remoteAddr);
    bool removeClient(const QString& name);

    QString controlAddr() const { return m_controlAddr; }
    void setControlAddr(const QString& a) { m_controlAddr = a; }
    quint16 controlPort() const;
    void setControlPort(quint16 p);

    QString filePath() const { return m_path; }

    /* GUI settings (from [gui] section) */
    QString dbPath() const { return m_dbPath; }
    QString debugFile() const { return m_debugFile; }
    QString debugLevel() const { return m_debugLevel; }
    QString debugCategories() const { return m_debugCategories; }

    /* Config validation errors (collected during load()) */
    bool hasErrors() const { return !m_errors.isEmpty(); }
    const QStringList& errors() const { return m_errors; }

    /* Identity generation (public for fixing invalid keys) */
    void generateIdentity();

private:

    QString m_path;
    QString m_nodeName;
    QString m_nodeId;
    QString m_pubKey;
    QString m_privKey;
    QList<QPair<QString,QString>> m_servers;
    QList<NodeClient> m_clients;
    QString m_controlAddr;
    QString m_dbPath;
    QString m_debugFile;
    QString m_debugLevel;
    QString m_debugCategories;
    QStringList m_errors;
};
#endif // NODE_CONFIG_H