#include "CSkinnedModel.hpp"
#include "Character/CSkinRules.hpp"
#include "CVertexMorphEffect.hpp"

namespace urde
{
static logvisor::Module Log("urde::CSkinnedModel");

CSkinnedModel::CSkinnedModel(TLockedToken<CModel> model,
                             TLockedToken<CSkinRules> skinRules,
                             TLockedToken<CCharLayoutInfo> layoutInfo,
                             int shaderIdx, int drawInsts)
: x4_model(model), x10_skinRules(skinRules), x1c_layoutInfo(layoutInfo)
{
    if (!model)
        Log.report(logvisor::Fatal, "bad model token provided to CSkinnedModel");
    if (!skinRules)
        Log.report(logvisor::Fatal, "bad skin token provided to CSkinnedModel");
    if (!layoutInfo)
        Log.report(logvisor::Fatal, "bad character layout token provided to CSkinnedModel");
    m_modelInst = model->MakeNewInstance(shaderIdx, drawInsts);
}

CSkinnedModel::CSkinnedModel(IObjectStore& store, CAssetId model,
                             CAssetId skinRules, CAssetId layoutInfo,
                             int shaderIdx, int drawInsts)
: CSkinnedModel(store.GetObj(SObjectTag{FOURCC('CMDL'), model}),
                store.GetObj(SObjectTag{FOURCC('CSKR'), skinRules}),
                store.GetObj(SObjectTag{FOURCC('CINF'), layoutInfo}),
                shaderIdx, drawInsts)
{
}

void CSkinnedModel::Calculate(const CPoseAsTransforms& pose,
                              const CModelFlags& drawFlags,
                              const std::experimental::optional<CVertexMorphEffect>& morphEffect,
                              const float* morphMagnitudes)
{
    if (morphEffect || g_PointGenFunc)
    {
        if (boo::ObjToken<boo::IGraphicsBufferD> vertBuf = m_modelInst->UpdateUniformData(drawFlags, nullptr, nullptr))
        {
            x10_skinRules->TransformVerticesCPU(m_vertWorkspace, pose, *x4_model);
            if (morphEffect)
                morphEffect->MorphVertices(m_vertWorkspace, morphMagnitudes, x10_skinRules, pose);
            if (g_PointGenFunc)
                g_PointGenFunc(g_PointGenCtx, m_vertWorkspace);
            x4_model->ApplyVerticesCPU(vertBuf, m_vertWorkspace);
        }
    }
    else
    {
        m_modelInst->UpdateUniformData(drawFlags, x10_skinRules.GetObj(), &pose);
    }
}

void CSkinnedModel::Draw(const CModelFlags& drawFlags) const
{
    if (m_modelInst->TryLockTextures())
        m_modelInst->DrawSurfaces(drawFlags);
}

CMorphableSkinnedModel::CMorphableSkinnedModel(IObjectStore& store, CAssetId model,
                                               CAssetId skinRules, CAssetId layoutInfo,
                                               int shaderIdx, int drawInsts)
: CSkinnedModel(store, model, skinRules, layoutInfo, shaderIdx, drawInsts)
{
}

CSkinnedModel::FPointGenerator CSkinnedModel::g_PointGenFunc = nullptr;
void* CSkinnedModel::g_PointGenCtx = nullptr;

}