/*
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Open Asset Import Library (assimp)
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Copyright (c) 2006-2022, assimp team



All rights reserved.

Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
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* Redistributions in binary form must reproduce the above
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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*/
#include "AbstractImportExportBase.h"
#include "UnitTestPCH.h"

#include <assimp/postprocess.h>
#include <assimp/Importer.hpp>
#include <assimp/scene.h>
#include <assimp/SpatialSort.h>

using namespace Assimp;

class utBlenderImporterExporter : public AbstractImportExportBase {
public:
    virtual bool importerTest() {
        Assimp::Importer importer;
        const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/box.blend", aiProcess_ValidateDataStructure);
        return nullptr != scene;
    }
};

TEST_F(utBlenderImporterExporter, importBlenFromFileTest) {
    EXPECT_TRUE(importerTest());
}

TEST(utBlenderImporter, import4cubes) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/4Cubes4Mats_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, import269_regress1) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/blender_269_regress1.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault250) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_250.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault250Compressed) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_250_Compressed.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault262) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_262.blend", aiProcess_ValidateDataStructure);
    // FIXME: this is probably not right, loading this should succeed
    ASSERT_EQ(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault269) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_269.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault271) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_271.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBlenderDefault293) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/BlenderDefault_276.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importCubeHierarchy_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/CubeHierarchy_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importHuman) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/HUMAN.blend", aiProcess_ValidateDataStructure);
	ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importMirroredCube_252) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/MirroredCube_252.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importNoisyTexturedCube_VoronoiGlob_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/NoisyTexturedCube_VoronoiGlob_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importSmoothVsSolidCube_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/SmoothVsSolidCube_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importSuzanne_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/Suzanne_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importSuzanneSubdiv_252) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/SuzanneSubdiv_252.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);

    // check approximate shape by averaging together all vertices
    ASSERT_EQ(scene->mNumMeshes, 1u);
    aiVector3D vertexAvg(0.0, 0.0, 0.0);
    for (unsigned int i = 0; i < scene->mNumMeshes; i++) {
        const aiMesh *mesh = scene->mMeshes[i];
        ASSERT_NE(mesh, nullptr);

        ai_real invVertexCount = 1.0 / mesh->mNumVertices;
        for (unsigned int j = 0; j < mesh->mNumVertices; j++) {
            vertexAvg += mesh->mVertices[j] * invVertexCount;
        }
    }

    // must not be inf or nan
    ASSERT_TRUE(std::isfinite(vertexAvg.x));
    ASSERT_TRUE(std::isfinite(vertexAvg.y));
    ASSERT_TRUE(std::isfinite(vertexAvg.z));
    EXPECT_NEAR(vertexAvg.x, 6.4022515289252624e-08, 0.0001);
    EXPECT_NEAR(vertexAvg.y, 0.060569953173398972, 0.0001);
    EXPECT_NEAR(vertexAvg.z, 0.31429031491279602, 0.0001);
}

TEST(utBlenderImporter, importTexturedCube_ImageGlob_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/TexturedCube_ImageGlob_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importTexturedPlane_ImageUv_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/TexturedPlane_ImageUv_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importTexturedPlane_ImageUvPacked_248) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/TexturedPlane_ImageUvPacked_248.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importTorusLightsCams_250_compressed) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/TorusLightsCams_250_compressed.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, import_yxa_1) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/yxa_1.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importBob) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_NONBSD_DIR "/BLEND/Bob.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}

TEST(utBlenderImporter, importFleurOptonl) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_NONBSD_DIR "/BLEND/fleurOptonl.blend", aiProcess_ValidateDataStructure);
    ASSERT_NE(nullptr, scene);
}


/*
This test contains a default cube with subdivision surface modifier
and a default cube with subdivision surface applied.
Vertices should be identical.
*/
TEST_F(utBlenderImporterExporter, importBlendWithSubdivisionSurface) {
    Assimp::Importer importer;
    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/BLEND/subdivision_test_277.blend", aiProcess_ValidateDataStructure);
    EXPECT_NE(nullptr, scene);
    EXPECT_EQ(scene->mNumMeshes, 2);
    EXPECT_EQ(scene->mMeshes[0]->mNumVertices, scene->mMeshes[1]->mNumVertices);

    SpatialSort spatialSortVertices0;
    spatialSortVertices0.Fill(scene->mMeshes[0]->mVertices, scene->mMeshes[0]->mNumVertices, sizeof(aiVector3D), true);

    for (unsigned int i = 0; i < scene->mMeshes[1]->mNumVertices; ++i)
    {
        auto positionMesh1 = scene->mMeshes[1]->mVertices[i];
        std::vector<unsigned int> spatialSortResult;
        spatialSortVertices0.FindPositions(positionMesh1, 1.0e-6f, spatialSortResult);

        EXPECT_TRUE(scene->mMeshes[0]->mVertices[spatialSortResult[0]].Equal(positionMesh1));
    }
}