#include "fixtures/RHITestFixture.h"
#include "XCEngine/RHI/OpenGL/OpenGLDevice.h"

using namespace XCEngine::RHI;

TEST_P(RHITestFixture, Device_Create_Success) {
    ASSERT_NE(GetDevice(), nullptr);
}

TEST_P(RHITestFixture, Device_Initialize_Shutdown) {
    RHIDevice* device = RHIFactory::CreateRHIDevice(GetBackendType());
    ASSERT_NE(device, nullptr);

    bool initResult = false;
    if (GetBackendType() == RHIType::D3D12) {
        RHIDeviceDesc desc = {};
        desc.enableDebugLayer = true;
        initResult = device->Initialize(desc);
    } else if (GetBackendType() == RHIType::OpenGL) {
        auto* oglDevice = static_cast<OpenGLDevice*>(device);
        initResult = oglDevice->InitializeWithExistingWindow(GetWindowHandle());
    }
    ASSERT_TRUE(initResult);

    device->Shutdown();
    delete device;
}

TEST_P(RHITestFixture, Device_GetCapabilities_ReturnsValid) {
    const auto& caps = GetDevice()->GetCapabilities();

    EXPECT_GE(caps.maxTexture2DSize, 0u);
    EXPECT_GE(caps.maxRenderTargets, 1u);
    EXPECT_GE(caps.maxViewports, 1u);
    EXPECT_GE(caps.maxVertexAttribs, 8u);
}

TEST_P(RHITestFixture, Device_GetDeviceInfo_ReturnsValid) {
    const auto& info = GetDevice()->GetDeviceInfo();

    EXPECT_FALSE(info.vendor.empty());
    EXPECT_FALSE(info.renderer.empty());
}

TEST_P(RHITestFixture, Device_CreateBuffer_ReturnsValid) {
    BufferDesc desc = {};
    desc.size = 1024;
    desc.stride = sizeof(float);
    desc.bufferType = static_cast<uint32_t>(BufferType::Vertex);

    RHIBuffer* buffer = GetDevice()->CreateBuffer(desc);
    ASSERT_NE(buffer, nullptr);
    EXPECT_EQ(buffer->GetSize(), 1024u);

    buffer->Shutdown();
    delete buffer;
}

TEST_P(RHITestFixture, Device_CreateTexture_ReturnsValid) {
    TextureDesc desc = {};
    desc.width = 512;
    desc.height = 512;
    desc.depth = 1;
    desc.mipLevels = 1;
    desc.arraySize = 1;
    desc.format = static_cast<uint32_t>(Format::R8G8B8A8_UNorm);
    desc.textureType = static_cast<uint32_t>(TextureType::Texture2D);
    desc.sampleCount = 1;
    desc.sampleQuality = 0;
    desc.flags = 0;

    RHITexture* texture = GetDevice()->CreateTexture(desc);
    ASSERT_NE(texture, nullptr);
    EXPECT_EQ(texture->GetWidth(), 512u);
    EXPECT_EQ(texture->GetHeight(), 512u);

    texture->Shutdown();
    delete texture;
}

TEST_P(RHITestFixture, Device_CreateFence_ReturnsValid) {
    FenceDesc desc = {};
    desc.initialValue = 0;
    desc.flags = 0;

    RHIFence* fence = GetDevice()->CreateFence(desc);
    ASSERT_NE(fence, nullptr);
    EXPECT_EQ(fence->GetCompletedValue(), 0u);

    fence->Shutdown();
    delete fence;
}

TEST_P(RHITestFixture, Device_CreateCommandQueue_ReturnsValid) {
    CommandQueueDesc desc = {};
    desc.queueType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandQueue* queue = GetDevice()->CreateCommandQueue(desc);
    ASSERT_NE(queue, nullptr);
    EXPECT_EQ(queue->GetType(), CommandQueueType::Direct);

    queue->Shutdown();
    delete queue;
}

TEST_P(RHITestFixture, Device_CreateCommandList_ReturnsValid) {
    CommandListDesc desc = {};
    desc.commandListType = static_cast<uint32_t>(CommandQueueType::Direct);

    RHICommandList* cmdList = GetDevice()->CreateCommandList(desc);
    ASSERT_NE(cmdList, nullptr);

    cmdList->Shutdown();
    delete cmdList;
}

TEST_P(RHITestFixture, Device_CreateSampler_ReturnsValid) {
    SamplerDesc desc = {};
    desc.filter = static_cast<uint32_t>(FilterMode::Linear);
    desc.addressU = static_cast<uint32_t>(TextureAddressMode::Wrap);
    desc.addressV = static_cast<uint32_t>(TextureAddressMode::Wrap);
    desc.addressW = static_cast<uint32_t>(TextureAddressMode::Wrap);

    RHISampler* sampler = GetDevice()->CreateSampler(desc);
    ASSERT_NE(sampler, nullptr);

    sampler->Shutdown();
    delete sampler;
}

TEST_P(RHITestFixture, Device_GetNativeDevice_ReturnsValid) {
    void* native = GetDevice()->GetNativeDevice();
    ASSERT_NE(native, nullptr);
}