/**
 * @file
 *
 * @author  Mamadou Babaei <mamadou@senseglove.com>
 *
 * @section LICENSE
 *
 * (The MIT License)
 *
 * Copyright (c) 2020 - 2022 SenseGlove
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * @section DESCRIPTION
 *
 * Buzz Motor with timing parameters.
 */


#pragma once

#include "HAL/Platform.h"
#include "Templates/SharedPointer.h"
#include "Templates/UniquePtr.h"
#include "UObject/ObjectMacros.h"

#include "SGTimedBuzzCommand.generated.h"

class FSGTimedBuzzCommandImpl;
class USGBuzzCommand;

/**
 * Buzz motor commands that is meant to stop after a few milliseconds.
 *
 * @remarks Intended use; this.levels indicates the actual command.
 */
UCLASS(BlueprintType)
class SENSEGLOVECORE_API USGTimedBuzzCommand : public USGBuzzCommand
{
    GENERATED_BODY()

public:
    static USGTimedBuzzCommand* NewTimedBuzzCommand(
        UObject* Outer, const FSGTimedBuzzCommandImpl& TimedBuzzCommandImpl);

    static USGTimedBuzzCommand* NewTimedBuzzCommand(
        UObject* Outer, TSharedRef<FSGTimedBuzzCommandImpl> TimedBuzzCommandImpl);

public:
    /**
     * Empty constructor for inheritance.
     */
    static USGTimedBuzzCommand* NewTimedBuzzCommand(UObject* Outer);

    /**
     * Create a new TimeBuzzCommand for a single finger.
     */
    static USGTimedBuzzCommand* NewTimedBuzzCommand(
        UObject* Outer,
        ESGFinger Finger, int32 Magnitude, float DurationSeconds, float StartTimeSeconds = 0.0f);

    /**
     * Create a new buzz motor command that expires after timing_ms.
     */
    static USGTimedBuzzCommand* NewTimedBuzzCommand(
        UObject* Outer,
        const USGBuzzCommand* BaseCommand, float DurationSeconds, float StartTimeSeconds = 0.0f);

private:
    struct FImpl;

    struct FImplDeleter
    {
        void operator()(const FImpl* P) const;
    };

    TUniquePtr<FImpl, FImplDeleter> Pimpl;
    FImplDeleter PimplDeleter;

public:
    /**
     * Empty constructor for inheritance.
     */
    USGTimedBuzzCommand();

    /**
     * Create a new TimeBuzzCommand for a single finger.
     */
    USGTimedBuzzCommand(ESGFinger Finger, int32 Magnitude, float DurationSeconds, float StartTimeSeconds = 0.0f);

    /**
     * Create a new buzz motor command that expires after timing_ms.
     */
    USGTimedBuzzCommand(const USGBuzzCommand* BaseCommand, float DurationSeconds, float StartTimeSeconds = 0.0f);

public:
    /**
     * The cast from underlying type constructor.
     */
    explicit USGTimedBuzzCommand(const FSGTimedBuzzCommandImpl& TimedBuzzCommandImpl);

protected:
    /**
     * The cast from underlying pointer type constructor.
     */
    explicit USGTimedBuzzCommand(TSharedRef<FSGTimedBuzzCommandImpl> TimedBuzzCommandImpl);

public:
    /**
     * The destructor.
     */
    virtual ~USGTimedBuzzCommand() override;

public:
    /**
     * The cast to underlying type method.
     */
    TSharedRef<FSGTimedBuzzCommandImpl> ToTimedBuzzCommandImpl() const;

protected:
    /**
     * Allows the child classes to synchronize the parent's underlying object at any time.
     */
    virtual void SyncImplObject() const override;

    /**
     * Allows the child classes to synchronize the parent's uproperties at any time.
     */
    virtual void SyncUProperties() override;

public:
    /**
     * Copy this Buzz Command's values into a new object.
     */
    USGBuzzCommand* Copy(UObject* Outer) const;

    /**
     * Merges this base command with another command.
     */
    USGBuzzCommand* Merge(UObject* Outer, const USGBuzzCommand* BuzzCommand) const;

public:
    /**
     * Access the base command, which indicates the buzz levels to keep untill time elapses.
     */
    USGBuzzCommand* GetBaseCommand(UObject* Outer) const;

    /**
     *
     */
    int32 GetMagnitude() const;

    /**
     * The total time [milliseconds] each buzz motor should be vibrating for.
     */
    float GetDuration() const;

    /**
     * The time elapsed since the command was sent [milliseconds].
     */
    float GetElapsedTime() const;

    /**
     * Check if this timed command's timing has elapsed.
     */
    bool HasTimeElapsed() const;

    /**
     * Represents how far this effect is in its playtime; [0...1], where 0 means at the start, and 1 means at the end.
     *
     * @param bClamp01 Optional parameter; ensures this value is always between 0 and 1.
     */
    float NormalizedTime(bool bClamp01 = true) const;

    /**
     * Reset the timings of this BuzzCommand, allowing us to re-use it.
     */
    void ResetTiming();

    /**
     * Update the elapsed time to check if the buzz motors should stop.
     */
    void UpdateTiming(float DeltaSeconds);

    /**
     *
     */
    FString ToString() const;
};