#include "MREA.hpp"
#include "SCLY.hpp"
#include "DeafBabe.hpp"
#include "../DNACommon/BabeDead.hpp"
#include "zeus/Math.hpp"

namespace DataSpec
{
namespace DNAMP1
{

void MREA::ReadBabeDeadToBlender_1_2(hecl::BlenderConnection::PyOutStream& os,
                                     athena::io::IStreamReader& rs)
{
    atUint32 bdMagic = rs.readUint32Big();
    if (bdMagic != 0xBABEDEAD)
        Log.report(logvisor::Fatal, "invalid BABEDEAD magic");
    os << "bpy.context.scene.render.engine = 'CYCLES'\n"
          "bpy.context.scene.world.use_nodes = True\n"
          "bpy.context.scene.render.engine = 'BLENDER_GAME'\n"
          "bg_node = bpy.context.scene.world.node_tree.nodes['Background']\n";
    for (atUint32 s=0 ; s<2 ; ++s)
    {
        atUint32 lightCount = rs.readUint32Big();
        for (atUint32 l=0 ; l<lightCount ; ++l)
        {
            BabeDeadLight light;
            light.read(rs);
            ReadBabeDeadLightToBlender(os, light, s, l);
        }
    }
}

void MREA::AddCMDLRigPairs(PAKEntryReadStream& rs,
                           PAKRouter<PAKBridge>& pakRouter,
                           std::unordered_map<UniqueID32, std::pair<UniqueID32, UniqueID32>>& addTo)
{
    /* Do extract */
    Header head;
    head.read(rs);
    rs.seekAlign32();

    /* Skip to SCLY */
    atUint32 curSec = 0;
    atUint64 secStart = rs.position();
    while (curSec != head.sclySecIdx)
        secStart += head.secSizes[curSec++];
    rs.seek(secStart, athena::Begin);
    SCLY scly;
    scly.read(rs);
    scly.addCMDLRigPairs(pakRouter, addTo);
}

bool MREA::Extract(const SpecBase& dataSpec,
                   PAKEntryReadStream& rs,
                   const hecl::ProjectPath& outPath,
                   PAKRouter<PAKBridge>& pakRouter,
                   const PAK::Entry& entry,
                   bool force,
                   std::function<void(const hecl::SystemChar*)>)
{
    using RigPair = std::pair<CSKR*, CINF*>;
    RigPair dummy(nullptr, nullptr);

    hecl::ProjectPath mreaPath;
    if (pakRouter.isShared())
        /* Rename MREA for consistency */
        mreaPath = hecl::ProjectPath(outPath.getParentPath(), _S("!area.blend"));
    else
        /* We're not in a world pak, so lets keep the original name */
        mreaPath = outPath;

    if (!force && mreaPath.getPathType() == hecl::ProjectPath::Type::File)
        return true;

    /* Do extract */
    Header head;
    head.read(rs);
    rs.seekAlign32();

    hecl::BlenderConnection& conn = hecl::BlenderConnection::SharedConnection();
    if (!conn.createBlend(mreaPath, hecl::BlenderConnection::BlendType::Area))
        return false;

    /* Open Py Stream and read sections */
    hecl::BlenderConnection::PyOutStream os = conn.beginPythonOut(true);
    os.format("import bpy\n"
              "import bmesh\n"
              "from mathutils import Vector\n"
              "\n"
              "bpy.context.scene.name = '%s'\n",
              pakRouter.getBestEntryName(entry).c_str());
    DNACMDL::InitGeomBlenderContext(os, dataSpec.getMasterShaderPath());
    MaterialSet::RegisterMaterialProps(os);
    os << "# Clear Scene\n"
          "for ob in bpy.data.objects:\n"
          "    bpy.context.scene.objects.unlink(ob)\n"
          "    bpy.data.objects.remove(ob)\n"
          "bpy.types.Lamp.retro_layer = bpy.props.IntProperty(name='Retro: Light Layer')\n"
          "bpy.types.Lamp.retro_origtype = bpy.props.IntProperty(name='Retro: Original Type')\n"
          "bpy.types.Object.retro_disable_enviro_visor = bpy.props.BoolProperty(name='Retro: Disable in Combat/Scan Visor')\n"
          "bpy.types.Object.retro_disable_thermal_visor = bpy.props.BoolProperty(name='Retro: Disable in Thermal Visor')\n"
          "bpy.types.Object.retro_disable_xray_visor = bpy.props.BoolProperty(name='Retro: Disable in X-Ray Visor')\n"
          "bpy.types.Object.retro_thermal_level = bpy.props.EnumProperty(items=[('COOL', 'Cool', 'Cool Temperature'),"
                                                                               "('HOT', 'Hot', 'Hot Temperature'),"
                                                                               "('WARM', 'Warm', 'Warm Temperature')],"
                                                                        "name='Retro: Thermal Visor Level')\n"
          "\n";

    /* One shared material set for all meshes */
    os << "# Materials\n"
          "materials = []\n"
          "\n";
    MaterialSet matSet;
    atUint64 secStart = rs.position();
    matSet.read(rs);
    matSet.readToBlender(os, pakRouter, entry, 0);
    rs.seek(secStart + head.secSizes[0], athena::Begin);
    std::vector<DNACMDL::VertexAttributes> vertAttribs;
    DNACMDL::GetVertexAttributes(matSet, vertAttribs);

    /* Read meshes */
    atUint32 curSec = 1;
    for (atUint32 m=0 ; m<head.meshCount ; ++m)
    {
        MeshHeader mHeader;
        secStart = rs.position();
        mHeader.read(rs);
        rs.seek(secStart + head.secSizes[curSec++], athena::Begin);
        curSec += DNACMDL::ReadGeomSectionsToBlender<PAKRouter<PAKBridge>, MaterialSet, RigPair, DNACMDL::SurfaceHeader_1>
                      (os, rs, pakRouter, entry, dummy, true,
                       true, vertAttribs, m, head.secCount, 0, &head.secSizes[curSec]);
        os.format("obj.retro_disable_enviro_visor = %s\n"
                  "obj.retro_disable_thermal_visor = %s\n"
                  "obj.retro_disable_xray_visor = %s\n"
                  "obj.retro_thermal_level = '%s'\n",
                  mHeader.visorFlags.disableEnviro() ? "True" : "False",
                  mHeader.visorFlags.disableThermal() ? "True" : "False",
                  mHeader.visorFlags.disableXray() ? "True" : "False",
                  mHeader.visorFlags.thermalLevelStr());
    }

    /* Skip AROT */
    rs.seek(head.secSizes[curSec++], athena::Current);

    /* Read SCLY layers */
    secStart = rs.position();
    SCLY scly;
    scly.read(rs);
    scly.exportToLayerDirectories(entry, pakRouter, force);
    rs.seek(secStart + head.secSizes[curSec++], athena::Begin);

    /* Read collision meshes */
    DeafBabe collision;
    secStart = rs.position();
    collision.read(rs);
    DeafBabe::BlenderInit(os);
    collision.sendToBlender(os);
    rs.seek(secStart + head.secSizes[curSec++], athena::Begin);

    /* Skip unknown section */
    rs.seek(head.secSizes[curSec++], athena::Current);

    /* Read BABEDEAD Lights as Cycles emissives */
    secStart = rs.position();
    ReadBabeDeadToBlender_1_2(os, rs);
    rs.seek(secStart + head.secSizes[curSec++], athena::Begin);

    /* Origins to center of mass */
    os << "bpy.context.scene.layers[1] = True\n"
          "bpy.ops.object.select_by_type(type='MESH')\n"
          "bpy.ops.object.origin_set(type='ORIGIN_CENTER_OF_MASS')\n"
          "bpy.ops.object.select_all(action='DESELECT')\n"
          "bpy.context.scene.layers[1] = False\n";

    /* Link MLVL scene as background */
    os.linkBackground("//../!world.blend", "World");

    os.centerView();
    os.close();
    return conn.saveBlend();
}

void MREA::Name(const SpecBase& dataSpec,
                PAKEntryReadStream& rs,
                PAKRouter<PAKBridge>& pakRouter,
                PAK::Entry& entry)
{
    /* Do extract */
    Header head;
    head.read(rs);
    rs.seekAlign32();

    /* One shared material set for all meshes */
    atUint64 secStart = rs.position();
    MaterialSet matSet;
    matSet.read(rs);
    matSet.nameTextures(pakRouter, hecl::Format("MREA_%s", entry.id.toString().c_str()).c_str(), -1);
    rs.seek(secStart + head.secSizes[0], athena::Begin);

    /* Skip to SCLY */
    atUint32 curSec = 1;
    secStart = rs.position();
    while (curSec != head.sclySecIdx)
        secStart += head.secSizes[curSec++];
    rs.seek(secStart, athena::Begin);
    SCLY scly;
    scly.read(rs);
    scly.nameIDs(pakRouter);

    /* Skip to PATH */
    while (curSec != head.pathSecIdx)
        secStart += head.secSizes[curSec++];
    rs.seek(secStart, athena::Begin);

    UniqueID32 pathID(rs);
    const nod::Node* node;
    PAK::Entry* pathEnt = (PAK::Entry*)pakRouter.lookupEntry(pathID, &node);
    pathEnt->name = entry.name + "_path";
}

}
}