#include "CMappableObject.hpp"
#include "GameGlobalObjects.hpp"
#include "CMapWorldInfo.hpp"
#include "CSimplePool.hpp"
#include "CToken.hpp"
#include "Graphics/CTexture.hpp"

namespace urde
{
const zeus::CVector3f CMappableObject::skDoorVerts[8] = {};

static const u32 DoorIndices[] =
{
    6, 4, 2, 0,
    3, 1, 7, 5,
    1, 0, 5, 4,
    7, 6, 3, 2,
    3, 2, 1, 0,
    5, 4, 7, 6
};

CMappableObject::CMappableObject(const void* buf)
{
    athena::io::MemoryReader r(buf, 64);
    x0_type = EMappableObjectType(r.readUint32Big());
    x4_visibilityMode = EVisMode(r.readUint32Big());
    x8_objId = r.readUint32Big();
    xc_ = r.readUint32Big();
    x10_transform.read34RowMajor(r);
}

zeus::CTransform CMappableObject::AdjustTransformForType()
{
    const float doorCenterX = g_tweakAutoMapper->GetDoorCenter().x;
    const float doorCenterZ = g_tweakAutoMapper->GetDoorCenter().z;
    if (x0_type == EMappableObjectType::BigDoor1)
    {
        zeus::CTransform orientation;
        orientation.origin = {-1.4f*doorCenterX, 0.0f, 0.0f};
        orientation.rotateLocalZ(zeus::degToRad(90.0f));
        return (x10_transform * orientation) * zeus::CTransform::Scale(zeus::CVector3f{1.5f});
    }
    else if (x0_type == EMappableObjectType::BigDoor2)
    {
        zeus::CTransform orientation;
        orientation.origin = {0.f, -2.0f * doorCenterZ, -1.4f * doorCenterX};
        orientation.rotateLocalZ(zeus::degToRad(-90.f));
        return (x10_transform * orientation) * zeus::CTransform::Scale(zeus::CVector3f{1.5f});
    }
    else if (x0_type == EMappableObjectType::IceDoorCeiling || x0_type == EMappableObjectType::WaveDoorCeiling
             || x0_type == EMappableObjectType::PlasmaDoorCeiling)
    {
        zeus::CTransform orientation;
        orientation.origin = {-1.65f * doorCenterX, 0.f, -1.5f * doorCenterZ};
        orientation.rotateLocalY(zeus::degToRad(90.f));
        return x10_transform * orientation;
    }
    else if (x0_type == EMappableObjectType::IceDoorFloor || x0_type == EMappableObjectType::WaveDoorFloor
             || x0_type == EMappableObjectType::PlasmaDoorFloor)
    {
        zeus::CTransform orientation;
        orientation.origin = {-1.65f * doorCenterX, 0.f, -1.f * doorCenterZ};
        orientation.rotateLocalY(zeus::degToRad(90.f));
        return x10_transform * orientation;
    }
    else if ((u32(x0_type) - u32(EMappableObjectType::IceDoorFloor2)) <= u32(EMappableObjectType::ShieldDoor)
             || x0_type == EMappableObjectType::PlasmaDoorFloor2)
    {
        zeus::CTransform orientation;
        orientation.origin = {-0.49f * doorCenterX, 0.f, -1.f * doorCenterZ};
        orientation.rotateLocalY(zeus::degToRad(90.f));
        return x10_transform * orientation;
    }
    else if (x0_type >= EMappableObjectType::BlueDoor || x0_type <= EMappableObjectType::PlasmaDoorFloor2)
    {
        zeus::CMatrix4f tmp = x10_transform.toMatrix4f().transposed();
        return zeus::CTransform::Translate(tmp.m[1][0], tmp.m[2][1], tmp[3][2]);
    }
    return x10_transform;
}

std::pair<zeus::CColor, zeus::CColor>
CMappableObject::GetDoorColors(int curAreaId, const CMapWorldInfo& mwInfo, float alpha) const
{
    zeus::CColor color = {1.f, 0.f, 1.f, 1.f};
    if (x8_objId.AreaNum() == curAreaId)
    {
        if (mwInfo.IsDoorVisited(x8_objId) && x0_type == EMappableObjectType::ShieldDoor)
        {
            color = g_tweakAutoMapper->GetDoorColor(0);
        }
        else
        {
            int colorIdx = 0;
            switch (x0_type)
            {
            case EMappableObjectType::ShieldDoor:
                colorIdx = 1;
                break;
            case EMappableObjectType::IceDoor:
            case EMappableObjectType::IceDoorCeiling:
            case EMappableObjectType::IceDoorFloor:
            case EMappableObjectType::IceDoorFloor2:
                colorIdx = 2;
                break;
            case EMappableObjectType::WaveDoor:
            case EMappableObjectType::WaveDoorCeiling:
            case EMappableObjectType::WaveDoorFloor:
            case EMappableObjectType::WaveDoorFloor2:
                colorIdx = 3;
                break;
            case EMappableObjectType::PlasmaDoor:
            case EMappableObjectType::PlasmaDoorCeiling:
            case EMappableObjectType::PlasmaDoorFloor:
            case EMappableObjectType::PlasmaDoorFloor2:
                colorIdx = 4;
            default: break;
            }
            color = g_tweakAutoMapper->GetDoorColor(colorIdx);
        }
    }
    else if (mwInfo.IsDoorVisited(x8_objId))
    {
        color = g_tweakAutoMapper->GetOpenDoorColor();
    }
    else
    {
        color = zeus::CColor::skClear;
    }

    color.a *= alpha;
    return {color, zeus::CColor(std::min(1.4f * color.r, 1.f),
                                std::min(1.4f * color.g, 1.f),
                                std::min(1.4f * color.b, 1.f),
                                std::min(1.4f * color.a, 1.f))};
}

void CMappableObject::PostConstruct(const void *)
{
    x10_transform = AdjustTransformForType();
}

void CMappableObject::Draw(int curArea, const CMapWorldInfo& mwInfo,
                           float alpha, bool needsVtxLoad) const
{
    if (IsDoorType(x0_type))
    {
        std::pair<zeus::CColor, zeus::CColor> colors = GetDoorColors(curArea, mwInfo, alpha);
        for (int s=0 ; s<6 ; ++s)
        {
            DoorSurface& ds = const_cast<DoorSurface&>(*m_doorSurface);
            ds.m_surface.draw(colors.first, s * 4, 4);
            CLineRenderer& line = ds.m_outline;
            const u32* baseIdx = &DoorIndices[s * 4];
            line.Reset();
            line.AddVertex(skDoorVerts[baseIdx[0]], colors.second, 1.f);
            line.AddVertex(skDoorVerts[baseIdx[1]], colors.second, 1.f);
            line.AddVertex(skDoorVerts[baseIdx[2]], colors.second, 1.f);
            line.AddVertex(skDoorVerts[baseIdx[3]], colors.second, 1.f);
            line.Render();
        }
    }
    else
    {
        CAssetId iconRes;
        zeus::CColor iconColor = zeus::CColor::skWhite;
        switch (x0_type)
        {
        case EMappableObjectType::DownArrowYellow:
            iconRes = g_tweakPlayerRes->x10_minesBreakFirstTopIcon;
            iconColor = zeus::CColor{1.f, 1.f, 0.588f, 1.f};
            break;
        case EMappableObjectType::UpArrowYellow:
            iconRes = g_tweakPlayerRes->x14_minesBreakFirstBottomIcon;
            iconColor = zeus::CColor{1.f, 1.f, 0.588f, 1.f};
            break;
        case EMappableObjectType::DownArrowGreen:
            iconRes = g_tweakPlayerRes->x10_minesBreakFirstTopIcon;
            iconColor = zeus::CColor{0.392f, 1.f, 0.588f, 1.f};
            break;
        case EMappableObjectType::UpArrowGreen:
            iconRes = g_tweakPlayerRes->x14_minesBreakFirstBottomIcon;
            iconColor = zeus::CColor{0.392f, 1.f, 0.588f, 1.f};
            break;
        case EMappableObjectType::DownArrowRed:
            iconRes = g_tweakPlayerRes->x10_minesBreakFirstTopIcon;
            iconColor = zeus::CColor{1.f, 0.392f, 0.588f, 1.f};
            break;
        case EMappableObjectType::UpArrowRed:
            iconRes = g_tweakPlayerRes->x14_minesBreakFirstBottomIcon;
            iconColor = zeus::CColor{1.f, 0.392f, 0.588f, 1.f};
            break;
        case EMappableObjectType::SaveStation:
            iconRes = g_tweakPlayerRes->x4_saveStationIcon;
            break;
        case EMappableObjectType::MissileStation:
            iconRes = g_tweakPlayerRes->x8_missileStationIcon;
            break;
        default:
            iconRes = g_tweakPlayerRes->xc_elevatorIcon;
            break;
        }

        iconColor.a *= alpha;

        TLockedToken<CTexture> tex = g_SimplePool->GetObj(SObjectTag{FOURCC('TXTR'), iconRes});
        if (!m_texQuadFilter || m_texQuadFilter->GetTex().GetObj() != tex.GetObj())
            const_cast<CMappableObject*>(this)->m_texQuadFilter.emplace(EFilterType::Blend, tex);

        CTexturedQuadFilter::Vert verts[4] =
        {
            {{-2.6f, 0.f, 2.6f}, {0.f, 1.f}},
            {{-2.6f, 0.f, -2.6f}, {0.f, 0.f}},
            {{2.6f, 0.f, 2.6f}, {1.f, 1.f}},
            {{2.6f, 0.f, -2.6f}, {1.f, 0.f}}
        };
        const_cast<CMappableObject*>(this)->m_texQuadFilter->drawVerts(iconColor, verts);
    }
}

void CMappableObject::DrawDoorSurface(int curArea, const CMapWorldInfo& mwInfo,
                                      float alpha, int surfIdx, bool needsVtxLoad) const
{
    std::pair<zeus::CColor, zeus::CColor> colors = GetDoorColors(curArea, mwInfo, alpha);
    DoorSurface& ds = const_cast<DoorSurface&>(*m_doorSurface);
    ds.m_surface.draw(colors.first, surfIdx * 4, 4);
    CLineRenderer& line = ds.m_outline;
    const u32* baseIdx = &DoorIndices[surfIdx * 4];
    line.Reset();
    line.AddVertex(skDoorVerts[baseIdx[0]], colors.second, 1.f);
    line.AddVertex(skDoorVerts[baseIdx[1]], colors.second, 1.f);
    line.AddVertex(skDoorVerts[baseIdx[2]], colors.second, 1.f);
    line.AddVertex(skDoorVerts[baseIdx[3]], colors.second, 1.f);
    line.Render();
}

zeus::CVector3f CMappableObject::BuildSurfaceCenterPoint(int surfIdx) const
{
    const zeus::CVector3f& doorCenter = g_tweakAutoMapper->GetDoorCenter();

    switch (surfIdx)
    {
    case 0:
        return x10_transform * zeus::CVector3f::skZero;
    case 1:
        return x10_transform * zeus::CVector3f{0.f, 0.f, 2.f * doorCenter.x};
    case 2:
        return x10_transform * zeus::CVector3f{0.f, -doorCenter.y, 0.f};
    case 3:
        return x10_transform * zeus::CVector3f{0.f, doorCenter.y, 0.f};
    case 4:
        return x10_transform * zeus::CVector3f{-doorCenter.x, 0.f, 0.f};
    case 5:
        return x10_transform * zeus::CVector3f{doorCenter.x, 0.f, 0.f};
    default: break;
    }

    return {};
}

bool CMappableObject::IsVisibleToAutoMapper(bool worldVis, const CMapWorldInfo& mwInfo) const
{
    bool areaVis = mwInfo.IsAreaVisible(x8_objId.AreaNum());
    switch (x4_visibilityMode)
    {
    case EVisMode::Always:
    default:
        return true;
    case EVisMode::MapStationOrVisit:
    case EVisMode::MapStationOrVisit2:
        return worldVis || areaVis;
    case EVisMode::Visit:
        if (IsDoorType(x0_type))
            return mwInfo.IsDoorVisited(x8_objId);
        return areaVis;
    case EVisMode::Never:
        return false;
    }
}

boo::ObjToken<boo::IGraphicsBufferS> CMappableObject::g_doorVbo;
boo::ObjToken<boo::IGraphicsBufferS> CMappableObject::g_doorIbo;

void CMappableObject::ReadAutoMapperTweaks(const ITweakAutoMapper& tweaks)
{
    const zeus::CVector3f& center = tweaks.GetDoorCenter();
    zeus::CVector3f* doorVerts = const_cast<zeus::CVector3f*>(&CMappableObject::skDoorVerts[0]);
    /* Wrap door verts around -Z to build surface */
    doorVerts[0].assign(      -center.z, -center.y, 0.f);
    doorVerts[1].assign(      -center.z, -center.y, 2.f * center.x);
    doorVerts[2].assign(      -center.z,  center.y, 0.f);
    doorVerts[3].assign(      -center.z,  center.y, 2.f * center.x);
    doorVerts[4].assign(.2f * -center.z, -center.y, 0.f);
    doorVerts[5].assign(.2f * -center.z, -center.y, 2.f * center.x);
    doorVerts[6].assign(.2f * -center.z,  center.y, 0.f);
    doorVerts[7].assign(.2f * -center.z,  center.y, 2.f * center.x);

    CGraphics::CommitResources([](boo::IGraphicsDataFactory::Context& ctx)
    {
        g_doorVbo = ctx.newStaticBuffer(boo::BufferUse::Vertex, skDoorVerts, 16, 8);
        g_doorIbo = ctx.newStaticBuffer(boo::BufferUse::Index, DoorIndices, 4, 24);
        return true;
    });
}

void CMappableObject::Shutdown()
{
    g_doorVbo.reset();
    g_doorIbo.reset();
}
}