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 *     derived from this software without specific prior written permission.
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 */

#ifndef OT_NEXUS_PLATFORM_NEXUS_NODE_HPP_
#define OT_NEXUS_PLATFORM_NEXUS_NODE_HPP_

#include "cli/cli.hpp"
#include "instance/instance.hpp"

#include "nexus_alarm.hpp"
#include "nexus_core.hpp"
#include "nexus_dns.hpp"
#include "nexus_infra_if.hpp"
#include "nexus_logging.hpp"
#include "nexus_mdns.hpp"
#include "nexus_radio.hpp"
#include "nexus_settings.hpp"
#include "nexus_trel.hpp"
#include "nexus_udp.hpp"
#include "nexus_utils.hpp"

namespace ot {
namespace Nexus {

class Platform
{
public:
    Radio       mRadio;
    Alarm       mAlarmMilli;
    Alarm       mAlarmMicro;
    Logging     mLogging;
    Mdns        mMdns;
    UpstreamDns mUpstreamDns;
    InfraIf     mInfraIf;
    Udp         mUdp;
    Settings    mSettings;
#if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE
    Trel mTrel;
#endif
    bool mPendingTasklet;

protected:
    explicit Platform(Instance &aInstance)
        : mUpstreamDns(aInstance)
        , mInfraIf(aInstance)
        , mUdp(aInstance)
        , mPendingTasklet(false)
    {
    }
};

class Node : public Platform, public Heap::Allocatable<Node>, public LinkedListEntry<Node>, public Instance
{
    friend class Heap::Allocatable<Node>;

public:
    //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    // Helper methods - tests

    enum JoinMode : uint8_t
    {
        kAsFtd,
        kAsFed,
        kAsMed,
        kAsSed,                // Request stable netdata (default for SED)
        kAsSedWithFullNetData, // Request full netdata as SED
    };

    enum AddressNetif : uint8_t // Used in `const Ip6::Address &aAddress, AddressNetif aNetif)`
    {
        kThreadNetifAddress,
        kInfraNetifAddress,
        kAnyNetifAddress,
    };

    void Reset(void);
    void Form(void);
    void Join(Node &aNode, JoinMode aJoinMode = kAsFtd);
    void AllowList(Node &aNode);
    void UnallowList(Node &aNode);
    void SendEchoRequest(const Ip6::Address &aDestination,
                         uint16_t            aIdentifier  = 0,
                         uint16_t            aPayloadSize = 0,
                         uint8_t             aHopLimit    = 64,
                         const Ip6::Address *aSrcAddress  = nullptr);

    const Ip6::Address &FindMatchingAddress(const char *aPrefix);
    const Ip6::Address &FindGlobalAddress(void);

    bool Matches(const Ip6::Address &aAddress, AddressNetif aNetif) const;
    bool Matches(uint32_t aId) const { return GetInstance().GetId() == aId; }
    bool Matches(const Mac::ExtAddress &aExtAddress) const { return Get<Mac::Mac>().GetExtAddress() == aExtAddress; }

    const char *GetExtendedRoleString(void) const;

#if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE
    void GetTrelSockAddr(Ip6::SockAddr &aSockAddr) const;
#endif

    //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    // Node Properties

    uint32_t    GetId(void) const { return GetInstance().GetId(); }
    void        SetName(const char *aName) { mName.Clear().Append("%s", aName); }
    void        SetName(const char *aPrefix, uint16_t aIndex);
    const char *GetName(void) const { return mName.AsCString(); }
    void        SetPosition(float aX, float aY) { mX = aX, mY = aY; }
    float       GetPositionX(void) const { return mX; }
    float       GetPositionY(void) const { return mY; }
    uint32_t    GetLastParentId(void) const { return mLastParentId; }
    void        SetLastParentId(uint32_t aId) { mLastParentId = aId; }

    //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    // Helper methods - Access OpenThread Core components

    template <typename Type> Type       &Get(void) { return Instance::Get<Type>(); }
    template <typename Type> const Type &Get(void) const { return AsConst(AsNonConst(this)->Get<Type>()); }

    Instance       &GetInstance(void) { return *this; }
    const Instance &GetInstance(void) const { return *this; }

    static Node &From(otInstance *aInstance)
    {
        Instance *instance = static_cast<Instance *>(aInstance);
        return *static_cast<Node *>(instance);
    }

    //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    // Helper methods - Callbacks

    static void HandleIp6Receive(otMessage *aMessage, void *aContext);

    //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    // CLI

    class CliOutputLine
    {
        friend class Node;

    public:
        CliOutputLine(void) = default;
        CliOutputLine(const CliOutputLine &aOther) { SuccessOrQuit(mLine.Set(aOther.mLine)); }
        CliOutputLine(CliOutputLine &&aOther) { mLine.TakeFrom(aOther.mLine.Move()); }
        CliOutputLine &operator=(const CliOutputLine &aOther);
        CliOutputLine &operator=(CliOutputLine &&aOther);

        const char *GetLine(void) const { return mLine.AsCString(); }

        bool Matches(const char *aLine) const { return StringMatch(GetLine(), aLine); }
        bool StartsWith(const char *aSubString) const { return StringStartsWith(GetLine(), aSubString); }
        bool EndsWith(const char *aSubString) const { return StringEndsWith(GetLine(), aSubString); }
        bool IsDone(void) const { return Matches("Done"); }

    private:
        static constexpr uint16_t kMaxLineSize = 256;

        Heap::String mLine;
    };

    typedef Heap::Array<CliOutputLine, 8> CliOutputArray;

    void                  InputCli(const char *aFormat, ...) OT_TOOL_PRINTF_STYLE_FORMAT_ARG_CHECK(2, 3);
    void                  ClearCliOutput(void) { mCliOutputLines.Free(), mCliCurOutputLine.Clear(); }
    const CliOutputArray &GetCliOutputLines(void) { return mCliOutputLines; }
    bool                  IsCliOutputSuccess(void);

    //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    // Platform components

    using Platform::mAlarmMicro;
    using Platform::mAlarmMilli;
    using Platform::mInfraIf;
    using Platform::mLogging;
    using Platform::mMdns;
    using Platform::mPendingTasklet;
    using Platform::mRadio;
    using Platform::mSettings;
    using Platform::mUdp;
    using Platform::mUpstreamDns;
#if OPENTHREAD_CONFIG_RADIO_LINK_TREL_ENABLE
    using Platform::mTrel;
#endif

    Node *mNext;

private:
    Node(void);
    void HandleIp6Receive(OwnedPtr<Message> aMessagePtr);

    static int HandleCliOutput(void *aContext, const char *aFormat, va_list aArguments)
        OT_TOOL_PRINTF_STYLE_FORMAT_ARG_CHECK(2, 0);
    int HandleCliOutput(const char *aFormat, va_list aArguments) OT_TOOL_PRINTF_STYLE_FORMAT_ARG_CHECK(2, 0);

    CliOutputArray                      mCliOutputLines;
    String<CliOutputLine::kMaxLineSize> mCliCurOutputLine;
    Cli::Interpreter                    mCliInterpreter;

    String<32> mName;
    float      mX;
    float      mY;
    uint32_t   mLastParentId;
};

inline Node &AsNode(otInstance *aInstance) { return Node::From(aInstance); }

void AllowLinkBetween(Node &aFirstNode, Node &aSecondNode);
void UnallowLinkBetween(Node &aFirstNode, Node &aSecondNode);

} // namespace Nexus

template <> inline Nexus::Node        &Instance::Get(void) { return Nexus::AsNode(this); }
template <> inline Nexus::InfraIf     &Instance::Get(void) { return static_cast<Nexus::Node *>(this)->mInfraIf; }
template <> inline Nexus::Udp         &Instance::Get(void) { return static_cast<Nexus::Node *>(this)->mUdp; }
template <> inline Nexus::Trel        &Instance::Get(void) { return static_cast<Nexus::Node *>(this)->mTrel; }
template <> inline Nexus::Mdns        &Instance::Get(void) { return static_cast<Nexus::Node *>(this)->mMdns; }
template <> inline Nexus::UpstreamDns &Instance::Get(void) { return static_cast<Nexus::Node *>(this)->mUpstreamDns; }

} // namespace ot

#endif // OT_NEXUS_PLATFORM_NEXUS_NODE_HPP_