#include "Common.h"

#ifdef IOS_REF
#undef  IOS_REF
#define IOS_REF (*(pManager->GetIOSettings()))
#endif

void InitializeSdkObjects(FbxManager*& pManager, FbxScene*& pScene)
{
    //The first thing to do is to create the FBX Manager which is the object allocator for almost all the classes in the SDK
    pManager = FbxManager::Create();
    if (!pManager)
    {
        FBXSDK_printf("Error: Unable to create FBX Manager!\n");
        exit(1);
    }
    else FBXSDK_printf("Autodesk FBX SDK version %s\n", pManager->GetVersion());

    //Create an IOSettings object. This object holds all import/export settings.
    FbxIOSettings* ios = FbxIOSettings::Create(pManager, IOSROOT);
    pManager->SetIOSettings(ios);

    //Load plugins from the executable directory (optional)
    FbxString lPath = FbxGetApplicationDirectory();
    pManager->LoadPluginsDirectory(lPath.Buffer());

    //Create an FBX scene. This object holds most objects imported/exported from/to files.
    pScene = FbxScene::Create(pManager, "My Scene");
    if (!pScene)
    {
        FBXSDK_printf("Error: Unable to create FBX scene!\n");
        exit(1);
    }
}

void DestroySdkObjects(FbxManager* pManager, bool pExitStatus)
{
    //Delete the FBX Manager. All the objects that have been allocated using the FBX Manager and that haven't been explicitly destroyed are also automatically destroyed.
    if (pManager) pManager->Destroy();
    if (pExitStatus) FBXSDK_printf("Program Success!\n");
}

bool SaveScene(FbxManager* pManager, FbxDocument* pScene, const char* pFilename, int pFileFormat, bool pEmbedMedia)
{
    int lMajor, lMinor, lRevision;
    bool lStatus = true;

    // Create an exporter.
    FbxExporter* lExporter = FbxExporter::Create(pManager, "");

    if (pFileFormat < 0 || pFileFormat >= pManager->GetIOPluginRegistry()->GetWriterFormatCount())
    {
        // Write in fall back format in less no ASCII format found
        pFileFormat = pManager->GetIOPluginRegistry()->GetNativeWriterFormat();

        //Try to export in ASCII if possible
        int lFormatIndex, lFormatCount = pManager->GetIOPluginRegistry()->GetWriterFormatCount();

        for (lFormatIndex = 0; lFormatIndex < lFormatCount; lFormatIndex++)
        {
            if (pManager->GetIOPluginRegistry()->WriterIsFBX(lFormatIndex))
            {
                FbxString lDesc = pManager->GetIOPluginRegistry()->GetWriterFormatDescription(lFormatIndex);
                const char *lASCII = "ascii";
                if (lDesc.Find(lASCII) >= 0)
                {
                    pFileFormat = lFormatIndex;
                    break;
                }
            }
        }
    }

    // Set the export states. By default, the export states are always set to 
    // true except for the option eEXPORT_TEXTURE_AS_EMBEDDED. The code below 
    // shows how to change these states.
    IOS_REF.SetBoolProp(EXP_FBX_MATERIAL, true);
    IOS_REF.SetBoolProp(EXP_FBX_TEXTURE, true);
    IOS_REF.SetBoolProp(EXP_FBX_EMBEDDED, pEmbedMedia);
    IOS_REF.SetBoolProp(EXP_FBX_SHAPE, true);
    IOS_REF.SetBoolProp(EXP_FBX_GOBO, true);
    IOS_REF.SetBoolProp(EXP_FBX_ANIMATION, true);
    IOS_REF.SetBoolProp(EXP_FBX_GLOBAL_SETTINGS, true);

    // Initialize the exporter by providing a filename.
    if (lExporter->Initialize(pFilename, pFileFormat, pManager->GetIOSettings()) == false)
    {
        FBXSDK_printf("Call to FbxExporter::Initialize() failed.\n");
        FBXSDK_printf("Error returned: %s\n\n", lExporter->GetStatus().GetErrorString());
        return false;
    }

    FbxManager::GetFileFormatVersion(lMajor, lMinor, lRevision);
    FBXSDK_printf("FBX file format version %d.%d.%d\n\n", lMajor, lMinor, lRevision);

    // Export the scene.
    lStatus = lExporter->Export(pScene);

    // Destroy the exporter.
    lExporter->Destroy();
    return lStatus;
}

bool LoadScene(FbxManager* pManager, FbxDocument* pScene, const char* pFilename)
{
    int lFileMajor, lFileMinor, lFileRevision;
    int lSDKMajor, lSDKMinor, lSDKRevision;
    //int lFileFormat = -1;
    int lAnimStackCount;
    bool lStatus;
    char lPassword[1024];

    // Get the file version number generate by the FBX SDK.
    FbxManager::GetFileFormatVersion(lSDKMajor, lSDKMinor, lSDKRevision);

    // Create an importer.
    FbxImporter* lImporter = FbxImporter::Create(pManager, "");

    // Initialize the importer by providing a filename.
    const bool lImportStatus = lImporter->Initialize(pFilename, -1, pManager->GetIOSettings());
    lImporter->GetFileVersion(lFileMajor, lFileMinor, lFileRevision);

    if (!lImportStatus)
    {
        FbxString error = lImporter->GetStatus().GetErrorString();
        FBXSDK_printf("Call to FbxImporter::Initialize() failed.\n");
        FBXSDK_printf("Error returned: %s\n\n", error.Buffer());

        if (lImporter->GetStatus().GetCode() == FbxStatus::eInvalidFileVersion)
        {
            FBXSDK_printf("FBX file format version for this FBX SDK is %d.%d.%d\n", lSDKMajor, lSDKMinor, lSDKRevision);
            FBXSDK_printf("FBX file format version for file '%s' is %d.%d.%d\n\n", pFilename, lFileMajor, lFileMinor, lFileRevision);
        }

        return false;
    }

    FBXSDK_printf("FBX file format version for this FBX SDK is %d.%d.%d\n", lSDKMajor, lSDKMinor, lSDKRevision);

    if (lImporter->IsFBX())
    {
        FBXSDK_printf("FBX file format version for file '%s' is %d.%d.%d\n\n", pFilename, lFileMajor, lFileMinor, lFileRevision);

        // From this point, it is possible to access animation stack information without
        // the expense of loading the entire file.

        FBXSDK_printf("Animation Stack Information\n");

        lAnimStackCount = lImporter->GetAnimStackCount();

        FBXSDK_printf("    Number of Animation Stacks: %d\n", lAnimStackCount);
        FBXSDK_printf("    Current Animation Stack: \"%s\"\n", lImporter->GetActiveAnimStackName().Buffer());
        FBXSDK_printf("\n");

        for (int i = 0; i < lAnimStackCount; i++)
        {
            FbxTakeInfo* lTakeInfo = lImporter->GetTakeInfo(i);

            FBXSDK_printf("    Animation Stack %d\n", i);
            FBXSDK_printf("         Name: \"%s\"\n", lTakeInfo->mName.Buffer());
            FBXSDK_printf("         Description: \"%s\"\n", lTakeInfo->mDescription.Buffer());

            // Change the value of the import name if the animation stack should be imported 
            // under a different name.
            FBXSDK_printf("         Import Name: \"%s\"\n", lTakeInfo->mImportName.Buffer());

            // Set the value of the import state to false if the animation stack should be not
            // be imported. 
            FBXSDK_printf("         Import State: %s\n", lTakeInfo->mSelect ? "true" : "false");
            FBXSDK_printf("\n");
        }

        // Set the import states. By default, the import states are always set to 
        // true. The code below shows how to change these states.
        IOS_REF.SetBoolProp(IMP_FBX_MATERIAL, true);
        IOS_REF.SetBoolProp(IMP_FBX_TEXTURE, true);
        IOS_REF.SetBoolProp(IMP_FBX_LINK, true);
        IOS_REF.SetBoolProp(IMP_FBX_SHAPE, true);
        IOS_REF.SetBoolProp(IMP_FBX_GOBO, true);
        IOS_REF.SetBoolProp(IMP_FBX_ANIMATION, true);
        IOS_REF.SetBoolProp(IMP_FBX_GLOBAL_SETTINGS, true);
    }

    // Import the scene.
    lStatus = lImporter->Import(pScene);
    if (lStatus == true)
    {
        // Check the scene integrity!
        FbxStatus status;
        FbxArray< FbxString*> details;
        FbxSceneCheckUtility sceneCheck(FbxCast<FbxScene>(pScene), &status, &details);
        lStatus = sceneCheck.Validate(FbxSceneCheckUtility::eCkeckData);
        if (lStatus == false)
        {
            if (details.GetCount())
            {
                FBXSDK_printf("Scene integrity verification failed with the following errors:\n");
                for (int i = 0; i < details.GetCount(); i++)
                    FBXSDK_printf("   %s\n", details[i]->Buffer());

                FbxArrayDelete<FbxString*>(details);
            }
        }
    }

    if (lStatus == false && lImporter->GetStatus().GetCode() == FbxStatus::ePasswordError)
    {
        FBXSDK_printf("Please enter password: ");

        lPassword[0] = '\0';

        FBXSDK_CRT_SECURE_NO_WARNING_BEGIN
            scanf("%s", lPassword);
        FBXSDK_CRT_SECURE_NO_WARNING_END

            FbxString lString(lPassword);

        IOS_REF.SetStringProp(IMP_FBX_PASSWORD, lString);
        IOS_REF.SetBoolProp(IMP_FBX_PASSWORD_ENABLE, true);

        lStatus = lImporter->Import(pScene);

        if (lStatus == false && lImporter->GetStatus().GetCode() == FbxStatus::ePasswordError)
        {
            FBXSDK_printf("\nPassword is wrong, import aborted.\n");
        }
    }

    // Destroy the importer.
    lImporter->Destroy();

    return lStatus;
}