/******************************************************************************
 *
 * Project:  OpenGIS Simple Features Reference Implementation
 * Purpose:  Different utility functions used in FileGDB OGR driver.
 * Author:   Ragi Yaser Burhum, ragi@burhum.com
 *           Paul Ramsey, pramsey at cleverelephant.ca
 *
 ******************************************************************************
 * Copyright (c) 2010, Ragi Yaser Burhum
 * Copyright (c) 2011, Paul Ramsey <pramsey at cleverelephant.ca>
 * Copyright (c) 2011-2014, Even Rouault <even dot rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/

#include "FGdbUtils.h"
#include <algorithm>

#include "ogr_api.h"
#include "ogrpgeogeometry.h"

using std::string;

/*************************************************************************/
/*                          StringToWString()                            */
/*************************************************************************/

std::wstring StringToWString(const std::string &utf8string)
{
    wchar_t *pszUTF16 =
        CPLRecodeToWChar(utf8string.c_str(), CPL_ENC_UTF8, CPL_ENC_UCS2);
    std::wstring utf16string = pszUTF16;
    CPLFree(pszUTF16);
    return utf16string;
}

/*************************************************************************/
/*                          WStringToString()                            */
/*************************************************************************/

std::string WStringToString(const std::wstring &utf16string)
{
    char *pszUTF8 =
        CPLRecodeFromWChar(utf16string.c_str(), CPL_ENC_UCS2, CPL_ENC_UTF8);
    std::string utf8string = pszUTF8;
    CPLFree(pszUTF8);
    return utf8string;
}

/*************************************************************************/
/*                                GDBErr()                               */
/*************************************************************************/

bool GDBErr(long int hr, const std::string &desc, CPLErr errType,
            const char *pszAddMsg)
{
    std::wstring fgdb_error_desc_w;
    fgdbError er;
    er = FileGDBAPI::ErrorInfo::GetErrorDescription(static_cast<fgdbError>(hr),
                                                    fgdb_error_desc_w);
    if (er == S_OK)
    {
        std::string fgdb_error_desc = WStringToString(fgdb_error_desc_w);
        CPLError(errType, CPLE_AppDefined, "%s (%s)%s", desc.c_str(),
                 fgdb_error_desc.c_str(), pszAddMsg);
    }
    else
    {
        CPLError(errType, CPLE_AppDefined, "Error (%ld): %s%s", hr,
                 desc.c_str(), pszAddMsg);
    }
    // FIXME? EvenR: not sure if ClearErrors() is really necessary, but as it,
    // it causes crashes in case of repeated errors
    // FileGDBAPI::ErrorInfo::ClearErrors();

    return false;
}

/*************************************************************************/
/*                            GDBDebug()                                 */
/*************************************************************************/

bool GDBDebug(long int hr, const std::string &desc)
{
    std::wstring fgdb_error_desc_w;
    fgdbError er;
    er = FileGDBAPI::ErrorInfo::GetErrorDescription(static_cast<fgdbError>(hr),
                                                    fgdb_error_desc_w);
    if (er == S_OK)
    {
        std::string fgdb_error_desc = WStringToString(fgdb_error_desc_w);
        CPLDebug("FGDB", "%s (%s)", desc.c_str(), fgdb_error_desc.c_str());
    }
    else
    {
        CPLDebug("FGDB", "%s", desc.c_str());
    }
    // FIXME? EvenR: not sure if ClearErrors() is really necessary, but as it,
    // it causes crashes in case of repeated errors
    // FileGDBAPI::ErrorInfo::ClearErrors();

    return false;
}

/*************************************************************************/
/*                            GDBToOGRGeometry()                         */
/*************************************************************************/

bool GDBToOGRGeometry(const std::string &geoType, bool hasZ, bool hasM,
                      OGRwkbGeometryType *pOut)
{
    if (geoType == "esriGeometryPoint")
    {
        *pOut = wkbPoint;
    }
    else if (geoType == "esriGeometryMultipoint")
    {
        *pOut = wkbMultiPoint;
    }
    else if (geoType == "esriGeometryLine")
    {
        *pOut = wkbLineString;
    }
    else if (geoType == "esriGeometryPolyline")
    {
        *pOut = wkbMultiLineString;
    }
    else if (geoType == "esriGeometryPolygon" ||
             geoType == "esriGeometryMultiPatch")
    {
        *pOut = wkbMultiPolygon;  // no mapping to single polygon
    }
    else
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Cannot map esriGeometryType(%s) to OGRwkbGeometryType",
                 geoType.c_str());
        return false;
    }
    if (hasZ)
        *pOut = wkbSetZ(*pOut);
    if (hasM)
        *pOut = wkbSetM(*pOut);

    return true;
}

/*************************************************************************/
/*                            OGRGeometryToGDB()                         */
/*************************************************************************/

bool OGRGeometryToGDB(OGRwkbGeometryType ogrType, std::string *gdbType,
                      bool *hasZ, bool *hasM)
{
    *hasZ = wkbHasZ(ogrType);
    *hasM = wkbHasM(ogrType);
    switch (wkbFlatten(ogrType))
    {
        case wkbPoint:
        {
            *gdbType = "esriGeometryPoint";
            break;
        }

        case wkbMultiPoint:
        {
            *gdbType = "esriGeometryMultipoint";
            break;
        }

        case wkbLineString:
        case wkbMultiLineString:
        {
            *gdbType = "esriGeometryPolyline";
            break;
        }

        case wkbPolygon:
        case wkbMultiPolygon:
        {
            *gdbType = "esriGeometryPolygon";
            break;
        }

        case wkbTIN:
        case wkbPolyhedralSurface:
        {
            *gdbType = "esriGeometryMultiPatch";
            break;
        }

        default:
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "Cannot map OGRwkbGeometryType (%s) to ESRI type",
                     OGRGeometryTypeToName(ogrType));
            return false;
        }
    }
    return true;
}

/*************************************************************************/
/*                            OGRToGDBFieldType()                        */
/*************************************************************************/

bool OGRToGDBFieldType(OGRFieldType ogrType, OGRFieldSubType eSubType,
                       std::string *gdbType)
{
    switch (ogrType)
    {
        case OFTInteger:
        {
            if (eSubType == OFSTInt16)
                *gdbType = "esriFieldTypeSmallInteger";
            else
                *gdbType = "esriFieldTypeInteger";
            break;
        }
        case OFTReal:
        case OFTInteger64:
        {
            if (eSubType == OFSTFloat32)
                *gdbType = "esriFieldTypeSingle";
            else
                *gdbType = "esriFieldTypeDouble";
            break;
        }
        case OFTString:
        {
            *gdbType = "esriFieldTypeString";
            break;
        }
        case OFTBinary:
        {
            *gdbType = "esriFieldTypeBlob";
            break;
        }
        case OFTDate:
        case OFTDateTime:
        {
            *gdbType = "esriFieldTypeDate";
            break;
        }
        default:
        {
            CPLError(CE_Warning, CPLE_AppDefined,
                     "Cannot map OGR field type (%s)",
                     OGR_GetFieldTypeName(ogrType));
            return false;
        }
    }

    return true;
}

/*************************************************************************/
/*                       GDBFieldTypeToLengthInBytes()                   */
/*************************************************************************/

bool GDBFieldTypeToLengthInBytes(const std::string &gdbType, int &lengthOut)
{
    /* Length based on
     * FileGDB_API/samples/XMLsamples/OneOfEachFieldType.xml */
    /* Length is in bytes per doc of FileGDB_API/xmlResources/FileGDBAPI.xsd */
    if (gdbType == "esriFieldTypeSmallInteger")
    {
        lengthOut = 2;
    }
    else if (gdbType == "esriFieldTypeInteger")
    {
        lengthOut = 4;
    }
    else if (gdbType == "esriFieldTypeSingle")
    {
        lengthOut = 4;
    }
    else if (gdbType == "esriFieldTypeDouble")
    {
        lengthOut = 8;
    }
    else if (gdbType == "esriFieldTypeString" || gdbType == "esriFieldTypeXML")
    {
        lengthOut = atoi(CPLGetConfigOption("FGDB_STRING_WIDTH", "65536"));
    }
    else if (gdbType == "esriFieldTypeDate")
    {
        lengthOut = 8;
    }
    else if (gdbType == "esriFieldTypeOID")
    {
        lengthOut = 4;
    }
    else if (gdbType == "esriFieldTypeGUID")
    {
        lengthOut = 16;
    }
    else if (gdbType == "esriFieldTypeBlob")
    {
        lengthOut = 0;
    }
    else if (gdbType == "esriFieldTypeGlobalID")
    {
        lengthOut = 38;
    }
    else
    {
        CPLError(CE_Warning, CPLE_AppDefined, "Cannot map ESRI field type (%s)",
                 gdbType.c_str());
        return false;
    }

    return true;
}

/*************************************************************************/
/*                        GDBGeometryToOGRGeometry()                     */
/*************************************************************************/

bool GDBGeometryToOGRGeometry(bool forceMulti,
                              FileGDBAPI::ShapeBuffer *pGdbGeometry,
                              OGRSpatialReference *pOGRSR,
                              OGRGeometry **ppOutGeometry)
{

    OGRGeometry *pOGRGeometry = nullptr;

    OGRErr eErr =
        OGRCreateFromShapeBin(pGdbGeometry->shapeBuffer, &pOGRGeometry,
                              static_cast<int>(pGdbGeometry->inUseLength));

    // OGRErr eErr =
    // OGRGeometryFactory::createFromWkb(pGdbGeometry->shapeBuffer, pOGRSR,
    // &pOGRGeometry, pGdbGeometry->inUseLength );

    if (eErr != OGRERR_NONE)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Failed attempting to import GDB WKB Geometry. "
                 "OGRGeometryFactory err:%d",
                 eErr);
        return false;
    }

    if (pOGRGeometry != nullptr)
    {
        // force geometries to multi if requested

        // If it is a polygon, force to MultiPolygon since we always produce
        // multipolygons
        OGRwkbGeometryType eFlattenType =
            wkbFlatten(pOGRGeometry->getGeometryType());
        if (eFlattenType == wkbPolygon)
        {
            pOGRGeometry =
                OGRGeometryFactory::forceToMultiPolygon(pOGRGeometry);
        }
        else if (eFlattenType == wkbCurvePolygon)
        {
            OGRMultiSurface *poMS = new OGRMultiSurface();
            poMS->addGeometryDirectly(pOGRGeometry);
            pOGRGeometry = poMS;
        }
        else if (forceMulti)
        {
            if (eFlattenType == wkbLineString)
            {
                pOGRGeometry =
                    OGRGeometryFactory::forceToMultiLineString(pOGRGeometry);
            }
            else if (eFlattenType == wkbCompoundCurve)
            {
                OGRMultiCurve *poMC = new OGRMultiCurve();
                poMC->addGeometryDirectly(pOGRGeometry);
                pOGRGeometry = poMC;
            }
            else if (eFlattenType == wkbPoint)
            {
                pOGRGeometry =
                    OGRGeometryFactory::forceToMultiPoint(pOGRGeometry);
            }
        }

        if (pOGRGeometry)
            pOGRGeometry->assignSpatialReference(pOGRSR);
    }

    *ppOutGeometry = pOGRGeometry;

    return true;
}

/*************************************************************************/
/*                         GDBToOGRSpatialReference()                    */
/*************************************************************************/

bool GDBToOGRSpatialReference(const string &wkt, OGRSpatialReference **ppSR)
{
    if (wkt.empty())
    {
        CPLError(CE_Warning, CPLE_AppDefined, "ESRI Spatial Reference is NULL");
        return false;
    }

    *ppSR = new OGRSpatialReference(wkt.c_str());
    (*ppSR)->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);

    OGRErr result = (*ppSR)->morphFromESRI();

    if (result == OGRERR_NONE)
    {
        if (CPLTestBool(CPLGetConfigOption("USE_OSR_FIND_MATCHES", "YES")))
        {
            int nEntries = 0;
            int *panConfidence = nullptr;
            OGRSpatialReferenceH *pahSRS =
                (*ppSR)->FindMatches(nullptr, &nEntries, &panConfidence);
            if (nEntries == 1 && panConfidence[0] == 100)
            {
                (*ppSR)->Release();
                (*ppSR) = reinterpret_cast<OGRSpatialReference *>(pahSRS[0]);
                (*ppSR)->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
                CPLFree(pahSRS);
            }
            else
            {
                OSRFreeSRSArray(pahSRS);
            }
            CPLFree(panConfidence);
        }
        else
        {
            (*ppSR)->AutoIdentifyEPSG();
        }

        return true;
    }
    else
    {
        delete *ppSR;
        *ppSR = nullptr;

        CPLError(CE_Failure, CPLE_AppDefined,
                 "Failed morphing from ESRI Geometry: %s", wkt.c_str());

        return false;
    }
}

/*************************************************************************/
/*                           FGDB_CPLAddXMLAttribute()                   */
/*************************************************************************/

/* Utility method for attributing nodes */
void FGDB_CPLAddXMLAttribute(CPLXMLNode *node, const char *attrname,
                             const char *attrvalue)
{
    if (!node)
        return;
    CPLCreateXMLNode(CPLCreateXMLNode(node, CXT_Attribute, attrname), CXT_Text,
                     attrvalue);
}

/*************************************************************************/
/*                          FGDBLaunderName()                            */
/*************************************************************************/

std::wstring FGDBLaunderName(const std::wstring &name)
{
    std::wstring newName = name;

    // https://support.esri.com/en/technical-article/000005588

    // "Do not start field or table names with an underscore or a number."
    // But we can see in the wild table names starting with underscore...
    // (cf https://github.com/OSGeo/gdal/issues/4112)
    if (!newName.empty() && newName[0] >= '0' && newName[0] <= '9')
    {
        newName = StringToWString("_") + newName;
    }

    // "Essentially, eliminate anything that is not alphanumeric or an
    // underscore." Note: alphanumeric unicode is supported
    for (size_t i = 0; i < newName.size(); i++)
    {
        if (!(newName[i] == '_' || (newName[i] >= '0' && newName[i] <= '9') ||
              (newName[i] >= 'a' && newName[i] <= 'z') ||
              (newName[i] >= 'A' && newName[i] <= 'Z') || newName[i] >= 128))
        {
            newName[i] = '_';
        }
    }

    return newName;
}

/*************************************************************************/
/*                     FGDBEscapeUnsupportedPrefixes()                   */
/*************************************************************************/

std::wstring FGDBEscapeUnsupportedPrefixes(const std::wstring &className)
{
    std::wstring newName = className;
    // From ESRI docs
    // Feature classes starting with these strings are unsupported.
    static const char *const UNSUPPORTED_PREFIXES[] = {"sde_", "gdb_", "delta_",
                                                       nullptr};

    for (int i = 0; UNSUPPORTED_PREFIXES[i] != nullptr; i++)
    {
        // cppcheck-suppress stlIfStrFind
        if (newName.find(StringToWString(UNSUPPORTED_PREFIXES[i])) == 0)
        {
            // Normally table names shouldn't start with underscore, but
            // there are such in the wild (cf
            // https://github.com/OSGeo/gdal/issues/4112)
            newName = StringToWString("_") + newName;
            break;
        }
    }

    return newName;
}

/*************************************************************************/
/*                        FGDBEscapeReservedKeywords()                   */
/*************************************************************************/

std::wstring FGDBEscapeReservedKeywords(const std::wstring &name)
{
    std::string newName = WStringToString(name);
    std::string upperName = CPLString(newName).toupper();

    // From ESRI docs
    static const char *const RESERVED_WORDS[] = {
        FGDB_OID_NAME, "ADD",   "ALTER",  "AND",    "AS",    "ASC",
        "BETWEEN",     "BY",    "COLUMN", "CREATE", "DATE",  "DELETE",
        "DESC",        "DROP",  "EXISTS", "FOR",    "FROM",  "IN",
        "INSERT",      "INTO",  "IS",     "LIKE",   "NOT",   "NULL",
        "OR",          "ORDER", "SELECT", "SET",    "TABLE", "UPDATE",
        "VALUES",      "WHERE", nullptr};

    // Append an underscore to any FGDB reserved words used as field names
    // This is the same behavior ArcCatalog follows.
    for (int i = 0; RESERVED_WORDS[i] != nullptr; i++)
    {
        const char *w = RESERVED_WORDS[i];
        if (upperName == w)
        {
            newName += '_';
            break;
        }
    }

    return StringToWString(newName);
}
