cs_PresencePredicate.h

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/*
 * Author: Crownstone Team
 * Copyright: Crownstone (https://crownstone.rocks)
 * Date: Oct 23, 2019
 * License: LGPLv3+, Apache License 2.0, and/or MIT (triple-licensed)
 */
 
#pragma once
 
#include <logging/cs_Logger.h>
#include <presence/cs_PresenceDescription.h>
 
#include <array>
 
class PresencePredicate {
public:
    typedef std::array<uint8_t, 9> SerializedDataType;
 
    // user id restrictions?
    enum class Condition : uint8_t {
        VacuouslyTrue         = 0,
        AnyoneInSelectedRooms = 1,
        NooneInSelectedRooms  = 2,
        AnyoneInSphere        = 3,
        NooneInSphere         = 4
    };
 
    // private: DEBUG
    Condition _condition;
    PresenceStateDescription _presence;
 
public:
    PresencePredicate(Condition c, PresenceStateDescription presence);
 
    PresencePredicate(SerializedDataType arr);
 
    bool requiresPresence() const;
    bool requiresAbsence() const;
 
    SerializedDataType serialize();
 
    // parameter bit i is 1 whenever there is presence detected in the
    // room with index i.
    bool isTrue(PresenceStateDescription presence);
 
    void print() {
        uint64_t locationBitmask                      = _presence.getBitmask();
 
        [[maybe_unused]] uint32_t locationBitmasks[2] = {
                static_cast<uint32_t>(locationBitmask >> 0), static_cast<uint32_t>(locationBitmask >> 32)};
        LOGd("PresencePredicate(condition: %d presence: 0x%04x 0x%04x)",
             static_cast<uint8_t>(_condition),
             locationBitmasks[1],
             locationBitmasks[0]);
    }
};