// IAEngine: 2D Game Engine by IA
// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#include <IAEngine/Components/CameraComponent.hpp>
#include <IAEngine/Nodes/Node2D.hpp>

#include <Renderer/Renderer.hpp>
#include <IAEngine/Engine.hpp>

namespace ia::iae
{
    CameraComponent::CameraComponent(IN Node2D *node) : IComponent(node)
    {
    }

    VOID CameraComponent::SetViewport(IN INT32 width, IN INT32 height)
    {
        m_viewport.x = 0;
        m_viewport.y = 0;
        m_viewport.z = width;
        m_viewport.w = height;

        m_projectionMatrix =
            glm::orthoLH(0.0f, (FLOAT32) width, (FLOAT32) height, 0.0f, -1.0f, 1.0f);
    }

    CONST Mat4 *CameraComponent::GetViewMatrix()
    {
        const auto pos = (m_node->GetPosition() + m_positionOffset) * Engine::GetSceneScalingFactor();
        m_viewMatrix = glm::lookAtLH(glm::vec3{pos, -1.0f}, {pos, 0.0f}, {0.0f, 1.0f, 0.0f});
        return &m_viewMatrix;
    }

    VOID CameraComponent::Draw()
    {
    }

    VOID CameraComponent::DebugDraw()
    {
    }

    VOID CameraComponent::Update()
    {
    }

    VOID CameraComponent::FixedUpdate()
    {
    }
} // namespace ia::iae