/*
 * network.hh - Definition of the Key classes for network configuration
 * libhscript, the HorizonScript library for
 * Project Horizon
 *
 * Copyright (c) 2019-2020 Adélie Linux and contributors.  All rights reserved.
 * This code is licensed under the AGPL 3.0 license, as noted in the
 * LICENSE-code file in the root directory of this repository.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

#ifndef __HSCRIPT_NETWORK_HH_
#define __HSCRIPT_NETWORK_HH_

#include <map>

#include "key.hh"
#include "util/output.hh"

namespace Horizon {
namespace Keys {

class Network : public BooleanKey {
private:
    Network(const Script *_s, const ScriptLocation &_p, bool _value) :
        BooleanKey(_s, _p, _value) {}
public:
    static Key *parseFromData(const std::string &, const ScriptLocation &pos,
                              int*, int*, const Script *);
    bool execute() const override;
};

class NetConfigType : public Key {
public:
    enum ConfigSystem {
        Netifrc,
        ENI
    };
private:
    ConfigSystem _sys;

    NetConfigType(const Script *_sc, const ScriptLocation &_p,
                  const ConfigSystem _s) : Key(_sc, _p), _sys(_s) {}
public:
    static Key *parseFromData(const std::string &, const ScriptLocation &,
                              int*, int*, const Script *);

    /*! Retrieve the desired network configuration system. */
    ConfigSystem type() const { return this->_sys; }

    bool validate() const override;
    bool execute() const override;
};

class NetAddress : public Key {
public:
    /*! Determines the type of address an interface will obtain. */
    enum AddressType {
        /*! DHCP address, obtained automatically from an addressing server. */
        DHCP,
        /*! IPv6 address automatically derived from router solicitation. */
        SLAAC,
        /*! Static address obtained from the netaddress key. */
        Static
    };
private:
    const std::string _iface;
    const AddressType _type;
    const std::string _address;
    const uint8_t _prefix;
    const std::string _gw;

    NetAddress(const Script *sc, const ScriptLocation &p, const std::string &_i,
               const AddressType &_t, const std::string &_a, const uint8_t _p,
               const std::string &_g) : Key(sc, p), _iface(_i), _type(_t),
        _address(_a), _prefix(_p), _gw(_g)
    {}
public:
    static Key *parseFromData(const std::string &, const ScriptLocation &,
                              int*, int*, const Script *);

    /*! Retrieve the interface to which this 'netaddress' key is associated. */
    const std::string iface() const { return this->_iface; }
    /*! Retrieve the address type of this 'netadress' key. */
    AddressType type() const { return this->_type; }
    /*! Retrieve the static address, if any. */
    const std::string address() const { return this->_address; }
    /*! Retreive the prefix length for the static address. */
    uint8_t prefix() const { return this->_prefix; }
    /*! Retrieve the gateway, if any. */
    const std::string gateway() const { return this->_gw; }

    bool validate() const override;
    bool execute() const override;
};

class PPPoE : public Key {
private:
    const std::string _iface;
    const std::map<std::string, std::string> _params;

    PPPoE(const Script *_sc, const ScriptLocation &_pos, const std::string &_i,
          const std::map<std::string, std::string> &_p) : Key(_sc, _pos),
        _iface(_i), _params(_p) {}
public:
    static Key *parseFromData(const std::string &, const ScriptLocation &,
                              int*, int*, const Script *);

    /*! Retrieve the interface to which this PPPoE link is associated. */
    const std::string iface() const { return this->_iface; }
    /*! Retrieve the parameters for this PPPoE link. */
    const std::map<std::string, std::string> params() const {
        return this->_params;
    }

    bool validate() const override;
    bool execute() const override;
};

class Nameserver : public StringKey {
private:
    Nameserver(const Script *_s, const ScriptLocation &_pos,
               const std::string &ns) : StringKey(_s, _pos, ns) {}
public:
    static Key *parseFromData(const std::string &, const ScriptLocation &_pos,
                              int*, int*, const Script *);
    bool execute() const override;
};

class NetSSID : public Key {
public:
    /*! The type of security used by the SSID. */
    enum SecurityType {
        None,
        WEP,
        WPA
    };
private:
    const std::string _iface;
    const std::string _ssid;
    const SecurityType _sec;
    const std::string _pw;

    NetSSID(const Script *_sc, const ScriptLocation &p, const std::string &_if,
            const std::string &_s, SecurityType _t, const std::string &_p) :
        Key(_sc, p), _iface(_if), _ssid(_s), _sec(_t), _pw(_p) {}
public:
    static Key *parseFromData(const std::string &, const ScriptLocation &,
                              int*, int*, const Script *);

    /*! Retrieve the interface to which this 'netssid' key is associated. */
    const std::string iface() const { return this->_iface; }
    /*! Retrieve the named SSID for this 'netssid' key. */
    const std::string ssid() const { return this->_ssid; }
    /*! Retrieve the security type of this 'netssid' key. */
    SecurityType type() const { return this->_sec; }
    /*! Retrieve the passphrase for this 'netssid' key.
     * @note Only valid if type() is not None.
     */
    const std::string passphrase() const { return this->_pw; }

    bool validate() const override;
    bool execute() const override;
};

}
}

#endif /* !__HSCRIPT_NETWORK_HH */