// Copyright (c) 2026 Reignance Studios. MIT License, see LICENSE.

#pragma once

#include "CoreMinimal.h"
#include "ActiveGameplayEffectHandle.h"
#include "GKLGameplayAbility.h"
#include "GKLSampleAbilities.generated.h"

/*
 * Five samples, each showing one multiplayer pattern. Subclass them in Blueprint to tune numbers.
 *
 *   Jump    LocalPredicted, stamina cost, movement already predicted by the CharacterMovementComponent
 *   Heal    LocalPredicted, mana cost + cooldown, effect on self predicted with the activation's key
 *   Strike  LocalPredicted cost/cooldown, damage applied by the server only
 *   Regen   ServerOnly passive, starts when granted, infinite periodic effect
 *   Death   ServerOnly, triggered by Event.Death from the AttributeSet
 */

/** Ability.Jump: 10 stamina. */
UCLASS()
class GASKITLITE_API UGKLAbility_Jump : public UGKLGameplayAbility
{
	GENERATED_BODY()

public:
	UGKLAbility_Jump();

	virtual bool CanActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayTagContainer* SourceTags = nullptr, const FGameplayTagContainer* TargetTags = nullptr,
		FGameplayTagContainer* OptionalRelevantTags = nullptr) const override;
	virtual void ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData) override;
};

/** Ability.Heal: 25 mana, 6 s cooldown, +30 health. */
UCLASS()
class GASKITLITE_API UGKLAbility_Heal : public UGKLGameplayAbility
{
	GENERATED_BODY()

public:
	UGKLAbility_Heal();

	virtual void ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData) override;

protected:
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "GASKit Lite|Heal")
	float HealAmount = 30.f;
};

/** Ability.Strike: 15 stamina, 0.8 s cooldown, 20 damage to every ASC in a sphere in front of the avatar. */
UCLASS()
class GASKITLITE_API UGKLAbility_Strike : public UGKLGameplayAbility
{
	GENERATED_BODY()

public:
	UGKLAbility_Strike();

	virtual void ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData) override;

protected:
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "GASKit Lite|Strike")
	float DamageAmount = 20.f;

	/** Distance from the avatar to the sphere centre, in cm. */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "GASKit Lite|Strike")
	float Range = 150.f;

	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "GASKit Lite|Strike")
	float Radius = 80.f;
};

/** Ability.Passive.Regen: +10 stamina and +2 mana per second while alive. */
UCLASS()
class GASKITLITE_API UGKLAbility_Regen : public UGKLGameplayAbility
{
	GENERATED_BODY()

public:
	UGKLAbility_Regen();

	virtual void OnGiveAbility(const FGameplayAbilityActorInfo* ActorInfo, const FGameplayAbilitySpec& Spec) override;
	virtual void ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData) override;
	virtual void EndAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo, bool bReplicateEndAbility, bool bWasCancelled) override;

private:
	FActiveGameplayEffectHandle RegenHandle;
};

/** Ability.Death: cancels other abilities, adds State.Dead, tells the character. */
UCLASS()
class GASKITLITE_API UGKLAbility_Death : public UGKLGameplayAbility
{
	GENERATED_BODY()

public:
	UGKLAbility_Death();

	virtual void ActivateAbility(const FGameplayAbilitySpecHandle Handle, const FGameplayAbilityActorInfo* ActorInfo,
		const FGameplayAbilityActivationInfo ActivationInfo, const FGameplayEventData* TriggerEventData) override;
};