#include "cve_model.hpp"

#include <cassert>
#include <cstring>

namespace cve {

    CveModel::CveModel(CveDevice &device, const std::vector<Vertex> &verticies) : cveDevice{device} {
        createVertexBuffers(verticies);
    }

    CveModel::~CveModel() {
        vkDestroyBuffer(cveDevice.device(), vertexBuffer, nullptr);
        vkFreeMemory(cveDevice.device(), vertexBufferMemory, nullptr);
    }

    void CveModel::createVertexBuffers(const std::vector<Vertex> &verticies) {
        vertexCount = static_cast<uint32_t>(verticies.size());
        assert(vertexCount >= 3 && "Vertex count must be at least 3");
        VkDeviceSize bufferSize = sizeof(verticies[0]) * vertexCount;
        cveDevice.createBuffer(
            bufferSize,
            VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
            VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
            vertexBuffer,
            vertexBufferMemory
        );

        void *data;
        vkMapMemory(cveDevice.device(), vertexBufferMemory, 0, bufferSize, 0, &data);
        memcpy(data, verticies.data(), static_cast<size_t>(bufferSize));
        vkUnmapMemory(cveDevice.device(), vertexBufferMemory);
    }
}