#include "components/GravityWellComponent.hpp"

#include "Entities.hpp"
#include "Entity.hpp"
#include "components/PlayerBlackHoleComponent.hpp"
#include "components/StatsComponent.hpp"

#include "raylib.h"

void GravityWellComponent::Setup() {}

void GravityWellComponent::Update(float) {
    if (!controlledByMouse) {
        active = alwaysActive;
        return;
    }

    active = false;

    if (!context || !context->entities) {
        return;
    }

    // right click removes all player-created black holes so the player can clear the screen quickly
    if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) {
        for (auto &ent : *context->entities) {
            if (!ent || ent->queuedForFree) {
                continue;
            }

            auto marker = ent->GetComponent<PlayerBlackHoleComponent>();
            if (marker) {
                ent->QueueFree();
            }
        }
        // Do not early return; allow left-click placement to still happen in the same frame
    }

    // only spawn a new black hole when the player has enough meter and pressed left
    if (!IsMouseButtonPressed(MOUSE_BUTTON_LEFT) || !context->statsEntity) {
        return;
    }

    auto stats = context->statsEntity->GetComponent<StatsComponent>();
    if (!stats || stats->get().value < placementCost) {
        return;
    }

    stats->get().Drain(placementCost);

    const Vector2 mouse = GetMousePosition();
    const float worldX = context->scrollX + mouse.x;

    auto blackHole = CreatePlayerBlackHole(worldX, mouse.y, context->scrollX, placementTtl);
    blackHole->SetContext(context);
    context->entities->push_back(blackHole);
}

void GravityWellComponent::Cleanup() {}