#ifndef BLUETOOTH_H
#define BLUETOOTH_H

#include <string>
#include <stdexcept>

// For now
#include "log.h"

#include "ByteBuffer.h"

namespace trygvis {
namespace bluetooth {
using namespace std;

class BluetoothAdapter;

class BluetoothDevice;

class BluetoothException : public runtime_error {
public:
    BluetoothException(const BluetoothAdapter *adapter, string const &what) :
            runtime_error(what), adapter(adapter), device(nullptr) {
    }

    BluetoothException(const BluetoothDevice *device, string const &what) :
            runtime_error(what), adapter(nullptr), device(device) {
    }

    BluetoothException(string const &what) :
            runtime_error(what), adapter(nullptr), device(nullptr) {
    }

    const BluetoothAdapter *adapter;
    const BluetoothDevice *device;
};

class Mac {
public:
    Mac(uint8_t _0, uint8_t _1, uint8_t _2, uint8_t _3, uint8_t _4, uint8_t _5) {
        bytes[0] = _0;
        bytes[1] = _1;
        bytes[2] = _2;
        bytes[3] = _3;
        bytes[4] = _4;
        bytes[5] = _5;
    };

    string str() const;

    bool operator==(Mac &other) const;

    bool operator!=(Mac &other) const;

    void copy(uint8_t &_0, uint8_t &_1, uint8_t &_2, uint8_t &_3, uint8_t &_4, uint8_t &_5) const;

    static Mac parseMac(string s) throw(BluetoothException);

    friend bool operator<(const Mac &a, const Mac &b);

private:
    uint8_t bytes[6];
};

class BluetoothDevice {
public:
    virtual Mac const &mac() = 0;

    virtual BluetoothAdapter &adapter() = 0;

    virtual void connect() = 0;

    virtual void disconnect() = 0;

    virtual void discoverServices() = 0;
};

class BluetoothAdapter {
public:
    virtual void stopScan() = 0;

    virtual void runScan(void (callback)(BluetoothDevice &device)) = 0;

    virtual BluetoothDevice &getDevice(Mac &mac) = 0;

protected:
    BluetoothAdapter();

    virtual ~BluetoothAdapter();
};

enum AttPduType {
    ERROR = 0x00,
    READ_BY_GROUP_TYPE_REQ = 0x10,
    READ_BY_GROUP_TYPE_RES = 0x11
};

class AttributeData;

class AttPdu {
public:
    AttPdu(ByteBuffer &bytes);

    AttPdu(ByteBuffer &bytes, AttPduType type);

    AttPduType getType();

    static vector<AttributeData> parseReadByGroupType(ByteBuffer &bytes);

    static void makeReadByGroupType(ByteBuffer &bytes, uint16_t startHandle, uint16_t endHandle, uint16_t uuid);

private:
    static void checkType(ByteBuffer &bytes, AttPduType type);

    ByteBuffer &bytes;
};

class AttributeData {
public:
    ~AttributeData();

    static AttributeData fromByteBuffer(ByteBuffer &value);

    const uint16_t handle;
    const uint16_t groupEndHandle;
    const ByteBuffer value;

private:
    AttributeData(uint16_t handle, uint16_t groupEndHandle, ByteBuffer value);
};

BluetoothAdapter &getAdapter(int hciDevice);

void shutdown();

}
}

#endif