#include "Runtime/GuiSys/CAuiImagePane.hpp"

#include "Runtime/CSimplePool.hpp"
#include "Runtime/Camera/CCameraFilter.hpp"
#include "Runtime/Graphics/CTexture.hpp"
#include "Runtime/GuiSys/CGuiWidgetDrawParms.hpp"

namespace urde {

CAuiImagePane::CAuiImagePane(const CGuiWidgetParms& parms, CSimplePool* sp, CAssetId tex0, CAssetId tex1,
                             rstl::reserved_vector<zeus::CVector3f, 4>&& coords,
                             rstl::reserved_vector<zeus::CVector2f, 4>&& uvs, bool initTex)
: CGuiWidget(parms), xc8_tex0(tex0), xcc_tex1(tex1), xe0_coords(std::move(coords)), x114_uvs(std::move(uvs)) {
  if (initTex)
    SetTextureID0(tex0, sp);
}

std::shared_ptr<CGuiWidget> CAuiImagePane::Create(CGuiFrame* frame, CInputStream& in, CSimplePool* sp) {
  CGuiWidgetParms parms = ReadWidgetHeader(frame, in);
  in.readUint32Big();
  in.readUint32Big();
  in.readUint32Big();
  u32 coordCount = in.readUint32Big();
  rstl::reserved_vector<zeus::CVector3f, 4> coords;
  for (u32 i = 0; i < coordCount; ++i)
    coords.push_back(zeus::CVector3f::ReadBig(in));
  u32 uvCount = in.readUint32Big();
  rstl::reserved_vector<zeus::CVector2f, 4> uvs;
  for (u32 i = 0; i < uvCount; ++i)
    uvs.push_back(zeus::CVector2f::ReadBig(in));
  std::shared_ptr<CGuiWidget> ret =
      std::make_shared<CAuiImagePane>(parms, sp, -1, -1, std::move(coords), std::move(uvs), true);
  ret->ParseBaseInfo(frame, in, parms);
  return ret;
}

void CAuiImagePane::Reset(ETraversalMode mode) {
  xc8_tex0 = CAssetId();
  xb8_tex0Tok = TLockedToken<CTexture>();
  CGuiWidget::Reset(mode);
}

void CAuiImagePane::Update(float dt) {
  xd0_uvBias0.x() = std::fmod(xd0_uvBias0.x(), 1.f);
  xd0_uvBias0.y() = std::fmod(xd0_uvBias0.y(), 1.f);
  if (x138_tileSize != zeus::skZero2f && xb8_tex0Tok.IsLoaded()) {
    zeus::CVector2f tmp = zeus::CVector2f(xb8_tex0Tok->GetWidth(), xb8_tex0Tok->GetHeight()) / x138_tileSize;
    x144_frameTimer = std::fmod(x144_frameTimer + dt * x140_interval, std::floor(tmp.x()) * std::floor(tmp.y()));
  }

  CGuiWidget::Update(dt);
}

CAuiImagePane::Filters::Filters(TLockedToken<CTexture>& tex)
: m_texId(tex.GetObjectTag()->id)
, m_darkenerQuad(EFilterType::Blend, tex)
, m_flashQuad{{{EFilterType::Add, tex}, {EFilterType::Add, tex}}}
, m_alphaQuad{{{EFilterType::Blend, tex}, {EFilterType::Blend, tex}}}
, m_addQuad{{{EFilterType::Add, tex}, {EFilterType::Add, tex}}} {}

void CAuiImagePane::DoDrawImagePane(const zeus::CColor& color, const CTexture& tex, int frame, float alpha, bool noBlur,
                                    CTexturedQuadFilterAlpha& quad) const {
  zeus::CColor useColor = color;
  useColor.a() *= alpha;

  rstl::reserved_vector<zeus::CVector2f, 4> vec;
  const rstl::reserved_vector<zeus::CVector2f, 4>* useUVs;
  if (x138_tileSize != zeus::skZero2f) {
    const zeus::CVector2f res(xb8_tex0Tok->GetWidth(), xb8_tex0Tok->GetHeight());
    const zeus::CVector2f tmp = res / x138_tileSize;
    const zeus::CVector2f tmpRecip = x138_tileSize / res;
    const float x0 = tmpRecip.x() * (frame % int(tmp.x()));
    const float x1 = x0 + tmpRecip.x();
    const float y0 = tmpRecip.y() * (frame % int(tmp.y()));
    const float y1 = y0 + tmpRecip.y();
    vec.push_back(zeus::CVector2f(x0, y0));
    vec.push_back(zeus::CVector2f(x0, y1));
    vec.push_back(zeus::CVector2f(x1, y0));
    vec.push_back(zeus::CVector2f(x1, y1));
    useUVs = &vec;
  } else {
    useUVs = &x114_uvs;
  }

  const std::array<CTexturedQuadFilter::Vert, 4> verts{{
      {xe0_coords[0], (*useUVs)[0] + xd0_uvBias0},
      {xe0_coords[1], (*useUVs)[1] + xd0_uvBias0},
      {xe0_coords[3], (*useUVs)[3] + xd0_uvBias0},
      {xe0_coords[2], (*useUVs)[2] + xd0_uvBias0},
  }};

  if (noBlur) {
    quad.drawVerts(useColor, verts.data());
  } else if ((x14c_deResFactor == 0.f && alpha == 1.f) || tex.GetNumMips() == 1) {
    quad.drawVerts(useColor, verts.data(), 0.f);
  } else {
    const float tmp = (1.f - x14c_deResFactor) * alpha;
    const float tmp3 = 1.f - tmp * tmp * tmp;
    const float mip = tmp3 * (tex.GetNumMips() - 1);
    quad.drawVerts(useColor, verts.data(), mip);
  }
}

void CAuiImagePane::Draw(const CGuiWidgetDrawParms& params) const {
  CGraphics::SetModelMatrix(x34_worldXF);
  if (!GetIsVisible() || !xb8_tex0Tok.IsLoaded())
    return;
  SCOPED_GRAPHICS_DEBUG_GROUP(fmt::format(fmt("CAuiImagePane::Draw {}"), m_name).c_str(), zeus::skCyan);
  GetIsFinishedLoadingWidgetSpecific();
  if (!m_filters || m_filters->m_texId != xb8_tex0Tok.GetObjectTag()->id)
    const_cast<CAuiImagePane*>(this)->m_filters.emplace(const_cast<CAuiImagePane*>(this)->xb8_tex0Tok);
  Filters& filters = const_cast<Filters&>(*m_filters);
  zeus::CColor color = xa8_color2;
  color.a() *= params.x0_alphaMod;
  // SetZUpdate(xac_drawFlags == EGuiModelDrawFlags::Shadeless || xac_drawFlags == EGuiModelDrawFlags::Opaque);
  float blur0 = 1.f;
  float blur1 = 0.f;
  int frame0 = x144_frameTimer;
  int frame1 = 0;
  if (x140_interval < 1.f && x140_interval > 0.f) {
    zeus::CVector2f tmp = zeus::CVector2f(xb8_tex0Tok->GetWidth(), xb8_tex0Tok->GetHeight()) / x138_tileSize;
    frame1 = (frame0 + 1) % int(tmp.x() * tmp.y());
    if (x148_fadeDuration == 0.f)
      blur1 = 1.f;
    else
      blur1 = std::min(std::fmod(x144_frameTimer, 1.f) / x148_fadeDuration, 1.f);
    blur0 = 1.f - blur1;
  }

  // Alpha blend
  DoDrawImagePane(color * zeus::CColor(0.f, 0.5f), *xb8_tex0Tok, frame0, 1.f, true, filters.m_darkenerQuad);

  if (x150_flashFactor > 0.f) {
    // Additive blend
    zeus::CColor color2 = xa8_color2;
    color2.a() = x150_flashFactor;
    DoDrawImagePane(color2, *xb8_tex0Tok, frame0, blur0, false, filters.m_flashQuad[0]);
    if (blur1 > 0.f)
      DoDrawImagePane(color2, *xb8_tex0Tok, frame1, blur1, false, filters.m_flashQuad[1]);
  }

  switch (xac_drawFlags) {
  case EGuiModelDrawFlags::Shadeless:
  case EGuiModelDrawFlags::Opaque:
    // Opaque blend
    DoDrawImagePane(color, *xb8_tex0Tok, frame0, blur0, false, filters.m_alphaQuad[0]);
    if (blur1 > 0.f)
      DoDrawImagePane(color, *xb8_tex0Tok, frame1, blur1, false, filters.m_alphaQuad[1]);
    break;
  case EGuiModelDrawFlags::Alpha:
    // Alpha blend
    DoDrawImagePane(color, *xb8_tex0Tok, frame0, blur0, false, filters.m_alphaQuad[0]);
    if (blur1 > 0.f)
      DoDrawImagePane(color, *xb8_tex0Tok, frame1, blur1, false, filters.m_alphaQuad[1]);
    break;
  case EGuiModelDrawFlags::Additive:
    // Additive blend
    DoDrawImagePane(color, *xb8_tex0Tok, frame0, blur0, false, filters.m_addQuad[0]);
    if (blur1 > 0.f)
      DoDrawImagePane(color, *xb8_tex0Tok, frame1, blur1, false, filters.m_addQuad[1]);
    break;
  case EGuiModelDrawFlags::AlphaAdditiveOverdraw:
    // Alpha blend
    DoDrawImagePane(color, *xb8_tex0Tok, frame0, blur0, false, filters.m_alphaQuad[0]);
    if (blur1 > 0.f)
      DoDrawImagePane(color, *xb8_tex0Tok, frame1, blur1, false, filters.m_alphaQuad[1]);
    // Full additive blend
    DoDrawImagePane(color, *xb8_tex0Tok, frame0, blur0, false, filters.m_addQuad[0]);
    if (blur1 > 0.f)
      DoDrawImagePane(color, *xb8_tex0Tok, frame1, blur1, false, filters.m_addQuad[1]);
    break;
  default:
    break;
  }
}

bool CAuiImagePane::GetIsFinishedLoadingWidgetSpecific() const { return !xb8_tex0Tok || xb8_tex0Tok.IsLoaded(); }

void CAuiImagePane::SetTextureID0(CAssetId tex, CSimplePool* sp) {
  xc8_tex0 = tex;
  if (!sp)
    return;
  if (xc8_tex0.IsValid())
    xb8_tex0Tok = sp->GetObj({FOURCC('TXTR'), xc8_tex0});
  else
    xb8_tex0Tok = TLockedToken<CTexture>();
}

void CAuiImagePane::SetAnimationParms(const zeus::CVector2f& tileSize, float interval, float fadeDuration) {
  x138_tileSize = tileSize;
  x140_interval = interval;
  x144_frameTimer = 0.f;
  x148_fadeDuration = fadeDuration;
}

} // namespace urde