#include <cstdio>
#include <cmath>
#include <boo/boo.hpp>
#include <boo/graphicsdev/GL.hpp>
#include <boo/graphicsdev/Vulkan.hpp>
#include <boo/graphicsdev/D3D.hpp>
#include <boo/graphicsdev/Metal.hpp>
#include <thread>
#include <mutex>
#include <condition_variable>
#include "logvisor/logvisor.hpp"

namespace boo {

class DolphinSmashAdapterCallback : public IDolphinSmashAdapterCallback {
  void controllerConnected(unsigned idx, EDolphinControllerType) override {
    //        printf("CONTROLLER %u CONNECTED\n", idx);
  }
  void controllerDisconnected(unsigned idx) override {
    //        printf("CONTROLLER %u DISCONNECTED\n", idx);
  }
  void controllerUpdate(unsigned idx, EDolphinControllerType, const DolphinControllerState& state) override {
    //        printf("CONTROLLER %u UPDATE %d %d\n", idx, state.m_leftStick[0], state.m_leftStick[1]);
    //        printf("                     %d %d\n", state.m_rightStick[0], state.m_rightStick[1]);
    //        printf("                     %d %d\n", state.m_analogTriggers[0], state.m_analogTriggers[1]);
  }
};

class DualshockPadCallback : public IDualshockPadCallback {
  void controllerDisconnected() override { printf("CONTROLLER DISCONNECTED\n"); }
  void controllerUpdate(DualshockPad& pad, const DualshockPadState& state) override {
    static time_t timeTotal;
    static time_t lastTime = 0;
    timeTotal = time(NULL);
    time_t timeDif = timeTotal - lastTime;
    /*
    if (timeDif >= .15)
    {
        uint8_t led = ctrl->getLED();
        led *= 2;
        if (led > 0x10)
            led = 2;
        ctrl->setRawLED(led);
        lastTime = timeTotal;
    }
    */
    if (state.m_psButtonState) {
      if (timeDif >= 1) // wait 30 seconds before issuing another rumble event
      {
        pad.startRumble(EDualshockMotor::Left);
        pad.startRumble(EDualshockMotor::Right, 100);
        lastTime = timeTotal;
      }
    }
    /*
    else
        ctrl->stopRumble(DS3_MOTOR_RIGHT | DS3_MOTOR_LEFT);*/

    printf("CONTROLLER UPDATE %d %d\n", state.m_leftStick[0], state.m_leftStick[1]);
    printf("                  %d %d\n", state.m_rightStick[0], state.m_rightStick[1]);
    printf("                  %f %f %f\n", state.accPitch, state.accYaw, state.gyroZ);
  }
};

class GenericPadCallback : public IGenericPadCallback {
  void controllerConnected() override { printf("CONTROLLER CONNECTED\n"); }
  void controllerDisconnected() override { printf("CONTROLLER DISCONNECTED\n"); }
  void valueUpdate(const HIDMainItem& item, int32_t value) override {
    const char* pageName = item.GetUsagePageName();
    const char* usageName = item.GetUsageName();
    if (pageName) {
      if (usageName)
        printf("%s %s %d\n", pageName, usageName, int(value));
      else
        printf("%s %d %d\n", pageName, int(item.m_usage), int(value));
    } else {
      if (usageName)
        printf("page%d %s %d\n", int(item.m_usagePage), usageName, int(value));
      else
        printf("page%d %d %d\n", int(item.m_usagePage), int(item.m_usage), int(value));
    }
  }
};

class NintendoPowerACallback : public INintendoPowerACallback {
  void controllerDisconnected() override { fprintf(stderr, "CONTROLLER DISCONNECTED\n"); }
  void controllerUpdate(const NintendoPowerAState& state) override {
    fprintf(stderr,
            "%i %i\n"
            "%i %i\n",
            state.leftX, state.leftY, state.rightX, state.rightY);
  }
};

class TestDeviceFinder : public DeviceFinder {
  std::shared_ptr<DolphinSmashAdapter> m_smashAdapter;
  std::shared_ptr<NintendoPowerA> m_nintendoPowerA;
  std::shared_ptr<DualshockPad> m_ds3;
  std::shared_ptr<GenericPad> m_generic;
  DolphinSmashAdapterCallback m_cb;
  NintendoPowerACallback m_nintendoPowerACb;
  DualshockPadCallback m_ds3CB;
  GenericPadCallback m_genericCb;

public:
  TestDeviceFinder()
  : DeviceFinder({dev_typeid(DolphinSmashAdapter), dev_typeid(NintendoPowerA), dev_typeid(GenericPad)}) {}
  void deviceConnected(DeviceToken& tok) override {
    auto dev = tok.openAndGetDevice();
    if (!dev)
      return;

    if (dev->getTypeHash() == dev_typeid(DolphinSmashAdapter)) {
      m_smashAdapter = std::static_pointer_cast<DolphinSmashAdapter>(dev);
      m_smashAdapter->setCallback(&m_cb);
    } else if (dev->getTypeHash() == dev_typeid(NintendoPowerA)) {
      m_nintendoPowerA = std::static_pointer_cast<NintendoPowerA>(dev);
      m_nintendoPowerA->setCallback(&m_nintendoPowerACb);
    } else if (dev->getTypeHash() == dev_typeid(DualshockPad)) {
      m_ds3 = std::static_pointer_cast<DualshockPad>(dev);
      m_ds3->setCallback(&m_ds3CB);
      m_ds3->setLED(EDualshockLED::LED_1);
    } else if (dev->getTypeHash() == dev_typeid(GenericPad)) {
      m_generic = std::static_pointer_cast<GenericPad>(dev);
      m_generic->setCallback(&m_genericCb);
    }
  }
  void deviceDisconnected(DeviceToken&, DeviceBase* device) override {
    if (m_smashAdapter.get() == device)
      m_smashAdapter.reset();
    if (m_ds3.get() == device)
      m_ds3.reset();
    if (m_generic.get() == device)
      m_generic.reset();
    if (m_nintendoPowerA.get() == device)
      m_nintendoPowerA.reset();
  }
};

struct CTestWindowCallback : IWindowCallback {
  bool m_fullscreenToggleRequested = false;
  SWindowRect m_lastRect;
  bool m_rectDirty = false;
  bool m_windowInvalid = false;

  void resized(const SWindowRect& rect, bool sync) override {
    m_lastRect = rect;
    m_rectDirty = true;
    fprintf(stderr, "Resized %d, %d (%d, %d)\n", rect.size[0], rect.size[1], rect.location[0], rect.location[1]);
  }

  void mouseDown(const SWindowCoord& coord, EMouseButton button, EModifierKey mods) override {
    fprintf(stderr, "Mouse Down %d (%f,%f)\n", int(button), coord.norm[0], coord.norm[1]);
  }
  void mouseUp(const SWindowCoord& coord, EMouseButton button, EModifierKey mods) override {
    fprintf(stderr, "Mouse Up %d (%f,%f)\n", int(button), coord.norm[0], coord.norm[1]);
  }
  void mouseMove(const SWindowCoord& coord) override {
    // fprintf(stderr, "Mouse Move (%f,%f)\n", coord.norm[0], coord.norm[1]);
  }
  void mouseEnter(const SWindowCoord& coord) override {
    fprintf(stderr, "Mouse entered (%f,%f)\n", coord.norm[0], coord.norm[1]);
  }
  void mouseLeave(const SWindowCoord& coord) override { fprintf(stderr, "Mouse left (%f,%f)\n", coord.norm[0], coord.norm[1]); }
  void scroll(const SWindowCoord& coord, const SScrollDelta& scroll) override {
    // fprintf(stderr, "Mouse Scroll (%f,%f) (%f,%f)\n", coord.norm[0], coord.norm[1], scroll.delta[0],
    // scroll.delta[1]);
  }

  void touchDown(const STouchCoord& coord, uintptr_t tid) override {
    // fprintf(stderr, "Touch Down %16lX (%f,%f)\n", tid, coord.coord[0], coord.coord[1]);
  }
  void touchUp(const STouchCoord& coord, uintptr_t tid) override {
    // fprintf(stderr, "Touch Up %16lX (%f,%f)\n", tid, coord.coord[0], coord.coord[1]);
  }
  void touchMove(const STouchCoord& coord, uintptr_t tid) override {
    // fprintf(stderr, "Touch Move %16lX (%f,%f)\n", tid, coord.coord[0], coord.coord[1]);
  }

  void charKeyDown(unsigned long charCode, EModifierKey mods, bool isRepeat) override {}
  void charKeyUp(unsigned long charCode, EModifierKey mods) override {}
  void specialKeyDown(ESpecialKey key, EModifierKey mods, bool isRepeat) override {
    if (key == ESpecialKey::Enter && True(mods & EModifierKey::Alt))
      m_fullscreenToggleRequested = true;
  }
  void specialKeyUp(ESpecialKey key, EModifierKey mods) override {}
  void modKeyDown(EModifierKey mod, bool isRepeat) override {}
  void modKeyUp(EModifierKey mod) override {}

  void windowMoved(const SWindowRect& rect) override {
    // fprintf(stderr, "Moved %d, %d (%d, %d)\n", rect.size[0], rect.size[1], rect.location[0], rect.location[1]);
  }

  void destroyed() override { m_windowInvalid = true; }
};

struct TestApplicationCallback : IApplicationCallback {
  std::shared_ptr<IWindow> mainWindow;
  boo::TestDeviceFinder devFinder;
  CTestWindowCallback windowCallback;
  bool running = true;

  boo::ObjToken<IShaderDataBinding> m_binding;
  boo::ObjToken<ITextureR> m_renderTarget;

  static void LoaderProc(TestApplicationCallback* self) {
    IGraphicsDataFactory* factory = self->mainWindow->getLoadContextDataFactory();

    factory->commitTransaction([&](IGraphicsDataFactory::Context& ctx) {
      /* Create render target */
      int x, y, w, h;
      self->mainWindow->getWindowFrame(x, y, w, h);
      self->m_renderTarget = ctx.newRenderTexture(w, h, boo::TextureClampMode::ClampToEdge, 1, 0);

      /* Make Tri-strip VBO */
      struct Vert {
        float pos[3];
        float uv[2];
      };
      /*
      static const Vert quad[4] =
      {
          {{0.5,0.5},{1.0,1.0}},
          {{-0.5,0.5},{0.0,1.0}},
          {{0.5,-0.5},{1.0,0.0}},
          {{-0.5,-0.5},{0.0,0.0}}
      };
       */
      static const Vert quad[4] = {
          {{1.0, 1.0}, {1.0, 1.0}}, {{-1.0, 1.0}, {0.0, 1.0}}, {{1.0, -1.0}, {1.0, 0.0}}, {{-1.0, -1.0}, {0.0, 0.0}}};
      auto vbo = ctx.newStaticBuffer(BufferUse::Vertex, quad, sizeof(Vert), 4);

      /* Make vertex format */
      VertexElementDescriptor descs[2] = {{VertexSemantic::Position3}, {VertexSemantic::UV2}};

      /* Make ramp texture */
      using Pixel = uint8_t[4];
      static Pixel tex[256][256];
      for (int i = 0; i < 256; ++i)
        for (int j = 0; j < 256; ++j) {
          tex[i][j][0] = i;
          tex[i][j][1] = j;
          tex[i][j][2] = 0;
          tex[i][j][3] = 0xff;
        }
      boo::ObjToken<ITexture> texture = ctx.newStaticTexture(256, 256, 1, TextureFormat::RGBA8,
                                                             boo::TextureClampMode::ClampToEdge, tex, 256 * 256 * 4)
                                            .get();

      /* Make shader pipeline */
      boo::ObjToken<IShaderPipeline> pipeline;
      auto plat = ctx.platform();

      AdditionalPipelineInfo info = {
          BlendFactor::One, BlendFactor::Zero, Primitive::TriStrips, boo::ZTest::LEqual, true, true, false,
          CullMode::None};

#if BOO_HAS_GL
      if (plat == IGraphicsDataFactory::Platform::OpenGL) {
        static const char* VS = "#version 330\n" BOO_GLSL_BINDING_HEAD
                                "layout(location=0) in vec3 in_pos;\n"
                                "layout(location=1) in vec2 in_uv;\n"
                                "SBINDING(0) out vec2 out_uv;\n"
                                "void main()\n"
                                "{\n"
                                "    gl_Position = vec4(in_pos, 1.0);\n"
                                "    out_uv = in_uv;\n"
                                "}\n";

        static const char* FS = "#version 330\n" BOO_GLSL_BINDING_HEAD
                                "precision highp float;\n"
                                "TBINDING0 uniform sampler2D tex;\n"
                                "layout(location=0) out vec4 out_frag;\n"
                                "SBINDING(0) in vec2 out_uv;\n"
                                "void main()\n"
                                "{\n"
                                "    //out_frag = texture(tex, out_uv);\n"
                                "    out_frag = vec4(out_uv.xy, 0.0, 1.0);\n"
                                "}\n";

        auto vertex = ctx.newShaderStage((uint8_t*)VS, 0, PipelineStage::Vertex);
        auto fragment = ctx.newShaderStage((uint8_t*)FS, 0, PipelineStage::Fragment);

        pipeline = ctx.newShaderPipeline(vertex, fragment,
                                         {{VertexSemantic::Position3},
                                          { VertexSemantic::UV2 }},
                                         info);
      } else
#endif
#if BOO_HAS_VULKAN
          if (plat == IGraphicsDataFactory::Platform::Vulkan) {
        static const char* VS = "#version 330\n" BOO_GLSL_BINDING_HEAD
                                "layout(location=0) in vec3 in_pos;\n"
                                "layout(location=1) in vec2 in_uv;\n"
                                "SBINDING(0) out vec2 out_uv;\n"
                                "void main()\n"
                                "{\n"
                                "    gl_Position = vec4(in_pos, 1.0);\n"
                                "    out_uv = in_uv;\n"
                                "}\n";

        static const char* FS = "#version 330\n" BOO_GLSL_BINDING_HEAD
                                "precision highp float;\n"
                                "TBINDING0 uniform sampler2D texs[1];\n"
                                "layout(location=0) out vec4 out_frag;\n"
                                "SBINDING(0) in vec2 out_uv;\n"
                                "void main()\n"
                                "{\n"
                                "    out_frag = texture(texs[0], out_uv);\n"
                                "}\n";

        auto vertexSiprv = VulkanDataFactory::CompileGLSL(VS, PipelineStage::Vertex);
        auto vertexShader = ctx.newShaderStage(vertexSiprv, PipelineStage::Vertex);
        auto fragmentSiprv = VulkanDataFactory::CompileGLSL(FS, PipelineStage::Fragment);
        auto fragmentShader = ctx.newShaderStage(fragmentSiprv, PipelineStage::Fragment);
        pipeline = ctx.newShaderPipeline(vertexShader, fragmentShader, descs, info);
      } else
#endif
#if _WIN32
          if (plat == IGraphicsDataFactory::Platform::D3D11) {
        static const char* VS =
            "struct VertData {float3 in_pos : POSITION; float2 in_uv : UV;};\n"
            "struct VertToFrag {float4 out_pos : SV_Position; float2 out_uv : UV;};\n"
            "VertToFrag main(in VertData v)\n"
            "{\n"
            "    VertToFrag retval;\n"
            "    retval.out_pos = float4(v.in_pos, 1.0);\n"
            "    retval.out_uv = v.in_uv;\n"
            "    return retval;\n"
            "}\n";

        static const char* PS =
            "SamplerState samp : register(s0);\n"
            "Texture2D tex : register(t0);\n"
            "struct VertToFrag {float4 out_pos : SV_Position; float2 out_uv : UV;};\n"
            "float4 main(in VertToFrag d) : SV_Target0\n"
            "{\n"
            "    //return tex.Sample(samp, d.out_uv);\n"
            "    return float4(d.out_uv.xy, 0.0, 1.0);\n"
            "}\n";

        auto vertexSiprv = D3D11DataFactory::CompileHLSL(VS, PipelineStage::Vertex);
        auto vertexShader = ctx.newShaderStage(vertexSiprv, PipelineStage::Vertex);
        auto fragmentSiprv = D3D11DataFactory::CompileHLSL(PS, PipelineStage::Fragment);
        auto fragmentShader = ctx.newShaderStage(fragmentSiprv, PipelineStage::Fragment);
        pipeline = ctx.newShaderPipeline(vertexShader, fragmentShader, descs, info);
      } else
#elif BOO_HAS_METAL
      if (plat == IGraphicsDataFactory::Platform::Metal) {
        static const char* VS =
            "#include <metal_stdlib>\n"
            "using namespace metal;\n"
            "struct VertData {float3 in_pos [[ attribute(0) ]]; float2 in_uv [[ attribute(1) ]];};\n"
            "struct VertToFrag {float4 out_pos [[ position ]]; float2 out_uv;};\n"
            "vertex VertToFrag vmain(VertData v [[ stage_in ]])\n"
            "{\n"
            "    VertToFrag retval;\n"
            "    retval.out_pos = float4(v.in_pos, 1.0);\n"
            "    retval.out_uv = v.in_uv;\n"
            "    return retval;\n"
            "}\n";

        static const char* FS =
            "#include <metal_stdlib>\n"
            "using namespace metal;\n"
            "struct VertToFrag {float4 out_pos [[ position ]]; float2 out_uv;};\n"
            "fragment float4 fmain(VertToFrag d [[ stage_in ]],\n"
            "                      sampler samp [[ sampler(3) ]],\n"
            "                      texture2d<float> tex [[ texture(0) ]])\n"
            "{\n"
            "    return tex.sample(samp, d.out_uv);\n"
            "}\n";

        auto vertexMetal = MetalDataFactory::CompileMetal(VS, PipelineStage::Vertex);
        auto vertexShader = ctx.newShaderStage(vertexMetal, PipelineStage::Vertex);
        auto fragmentMetal = MetalDataFactory::CompileMetal(FS, PipelineStage::Fragment);
        auto fragmentShader = ctx.newShaderStage(fragmentMetal, PipelineStage::Fragment);
        pipeline = ctx.newShaderPipeline(vertexShader, fragmentShader, descs, info);
      } else
#endif
      {
      }

      /* Make shader data binding */
      self->m_binding = ctx.newShaderDataBinding(pipeline, vbo.get(), nullptr, nullptr, 0, nullptr, nullptr, 1,
                                                 &texture, nullptr, nullptr);

      return true;
    } BooTrace);
  }

  int appMain(IApplication* app) override {
    mainWindow = app->newWindow(_SYS_STR("YAY!"));
    mainWindow->setCallback(&windowCallback);
    mainWindow->showWindow();
    windowCallback.m_lastRect = mainWindow->getWindowFrame();
    // mainWindow->setFullscreen(true);
    devFinder.startScanning();

    IGraphicsCommandQueue* gfxQ = mainWindow->getCommandQueue();

    LoaderProc(this);

    size_t frameIdx = 0;
    size_t lastCheck = 0;
    while (running) {
      if (windowCallback.m_windowInvalid) {
        running = false;
        break;
      }

      mainWindow->waitForRetrace();

      if (windowCallback.m_rectDirty) {
        gfxQ->resizeRenderTexture(m_renderTarget, windowCallback.m_lastRect.size[0], windowCallback.m_lastRect.size[1]);
        windowCallback.m_rectDirty = false;
      }

      if (windowCallback.m_fullscreenToggleRequested) {
        mainWindow->setFullscreen(!mainWindow->isFullscreen());
        windowCallback.m_fullscreenToggleRequested = false;
      }

      gfxQ->setRenderTarget(m_renderTarget);
      SWindowRect r = windowCallback.m_lastRect;
      r.location[0] = 0;
      r.location[1] = 0;
      gfxQ->setViewport(r);
      gfxQ->setScissor(r);
      // float rgba[] = {std::max(0.f, sinf(frameIdx / 60.0)), std::max(0.f, cosf(frameIdx / 60.0)), 0.0, 1.0};
      float gammaT = sinf(frameIdx / 60.0) + 1.f;
      if (gammaT < 1.f)
        gammaT = gammaT * 0.5f + 0.5f;
      // printf("%f\n", gammaT);
      mainWindow->getDataFactory()->setDisplayGamma(gammaT);
      // gfxQ->setClearColor(rgba);
      gfxQ->clearTarget();

      gfxQ->setShaderDataBinding(m_binding);
      gfxQ->draw(0, 4);
      gfxQ->resolveDisplay(m_renderTarget);
      gfxQ->execute();

      // fprintf(stderr, "%zu\n", frameIdx);
      ++frameIdx;

      if ((frameIdx - lastCheck) > 100) {
        lastCheck = frameIdx;
        // mainWindow->setFullscreen(!mainWindow->isFullscreen());
      }
    }

    gfxQ->stopRenderer();
    m_renderTarget.reset();
    m_binding.reset();
    return 0;
  }
  void appQuitting(IApplication*) override { running = false; }
  void appFilesOpen(IApplication*, const std::vector<SystemString>& paths) override {
    fprintf(stderr, "OPENING: ");
    for (const SystemString& path : paths) {
#if _WIN32
      fwprintf(stderr, L"%s ", path.c_str());
#else
      fprintf(stderr, "%s ", path.c_str());
#endif
    }
    fprintf(stderr, "\n");
  }
};

} // namespace boo

#if !WINDOWS_STORE
#if _WIN32
int wmain(int argc, const boo::SystemChar** argv)
#else
int main(int argc, const boo::SystemChar** argv)
#endif
{
  logvisor::RegisterStandardExceptions();
  logvisor::RegisterConsoleLogger();
  boo::TestApplicationCallback appCb;
  int ret = ApplicationRun(boo::IApplication::EPlatformType::Auto, appCb, _SYS_STR("boo"), _SYS_STR("boo"), argc, argv,
                           {}, 1, 1, true);
  printf("IM DYING!!\n");
  return ret;
}

#else
using namespace Windows::ApplicationModel::Core;

[Platform::MTAThread] int WINAPIV main(Platform::Array<Platform::String ^> ^ params) {
  logvisor::RegisterStandardExceptions();
  logvisor::RegisterConsoleLogger();
  boo::TestApplicationCallback appCb;
  boo::ViewProvider ^ viewProvider =
      ref new boo::ViewProvider(appCb, _SYS_STR("boo"), _SYS_STR("boo"), _SYS_STR("boo"), params, false);
  CoreApplication::Run(viewProvider);
  return 0;
}
#endif

#if _WIN32 && !WINDOWS_STORE
int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR lpCmdLine, int) {
  int argc = 0;
  const boo::SystemChar** argv;
  if (lpCmdLine[0])
    argv = (const wchar_t**)(CommandLineToArgvW(lpCmdLine, &argc));
  static boo::SystemChar selfPath[1024];
  GetModuleFileNameW(nullptr, selfPath, 1024);
  static const boo::SystemChar* booArgv[32] = {};
  booArgv[0] = selfPath;
  for (int i = 0; i < argc; ++i)
    booArgv[i + 1] = argv[i];

  logvisor::CreateWin32Console();
  return wmain(argc + 1, booArgv);
}
#endif