/******************************************************************************
 *
 * Project:  GDAL Utilities
 * Purpose:  GDAL Image Translator Program
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 1998, 2002, Frank Warmerdam
 * Copyright (c) 2007-2014, Even Rouault <even dot rouault at spatialys.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 ****************************************************************************/

#include "cpl_string.h"
#include "gdal_version.h"
#include "gdal_priv.h"
#include "ogr_spatialref.h"
#include "commonutils.h"
#include "gdal_utils_priv.h"

/*  ******************************************************************* */
/*                               Usage()                                */
/* ******************************************************************** */

static void Usage(const char *pszErrorMsg = nullptr,
                  int bShort = TRUE) CPL_NO_RETURN;

static void Usage(const char *pszErrorMsg, int bShort)

{
    printf(
        "Usage: gdal_translate [--help-general] [--long-usage]\n"
        "       [-ot "
        "{Byte/Int8/Int16/UInt16/UInt32/Int32/UInt64/Int64/Float32/Float64/\n"
        "             CInt16/CInt32/CFloat32/CFloat64}] [-strict]\n"
        "       [-if format]* [-of format]\n"
        "       [-b band] [-mask band] [-expand {gray|rgb|rgba}]\n"
        "       [-outsize xsize[%%]|0 ysize[%%]|0] [-tr xres yres]\n"
        "       [-ovr level|AUTO|AUTO-n|NONE]\n"
        "       [-r "
        "{nearest,bilinear,cubic,cubicspline,lanczos,average,mode}]\n"
        "       [-unscale] [-scale[_bn] [src_min src_max [dst_min dst_max]]]* "
        "[-exponent[_bn] exp_val]*\n"
        "       [-srcwin xoff yoff xsize ysize] [-epo] [-eco]\n"
        "       [-projwin ulx uly lrx lry] [-projwin_srs srs_def]\n"
        "       [-a_srs srs_def] [-a_coord_epoch epoch]\n"
        "       [-a_ullr ulx uly lrx lry] [-a_nodata value]\n"
        "       [-a_scale value] [-a_offset value]\n"
        "       [-nogcp] [-gcp pixel line easting northing [elevation]]*\n"
        "       |-colorinterp{_bn} {red|green|blue|alpha|gray|undefined}]\n"
        "       |-colorinterp {red|green|blue|alpha|gray|undefined},...]\n"
        "       [-mo \"META-TAG=VALUE\"]* [-q] [-sds]\n"
        "       [-co \"NAME=VALUE\"]* [-stats] [-norat] [-noxmp]\n"
        "       [-oo NAME=VALUE]*\n"
        "       src_dataset dst_dataset\n");

    if (!bShort)
    {
        printf("\n%s\n\n", GDALVersionInfo("--version"));
        printf("The following format drivers are configured and support "
               "output:\n");
        for (int iDr = 0; iDr < GDALGetDriverCount(); iDr++)
        {
            GDALDriverH hDriver = GDALGetDriver(iDr);

            if (GDALGetMetadataItem(hDriver, GDAL_DCAP_RASTER, nullptr) !=
                    nullptr &&
                (GDALGetMetadataItem(hDriver, GDAL_DCAP_CREATE, nullptr) !=
                     nullptr ||
                 GDALGetMetadataItem(hDriver, GDAL_DCAP_CREATECOPY, nullptr) !=
                     nullptr))
            {
                printf("  %s: %s\n", GDALGetDriverShortName(hDriver),
                       GDALGetDriverLongName(hDriver));
            }
        }
    }

    if (pszErrorMsg != nullptr)
        fprintf(stderr, "\nFAILURE: %s\n", pszErrorMsg);

    exit(1);
}

/************************************************************************/
/*                       GDALTranslateOptionsForBinaryNew()             */
/************************************************************************/

static GDALTranslateOptionsForBinary *GDALTranslateOptionsForBinaryNew(void)
{
    return static_cast<GDALTranslateOptionsForBinary *>(
        CPLCalloc(1, sizeof(GDALTranslateOptionsForBinary)));
}

/************************************************************************/
/*                       GDALTranslateOptionsForBinaryFree()            */
/************************************************************************/

static void GDALTranslateOptionsForBinaryFree(
    GDALTranslateOptionsForBinary *psOptionsForBinary)
{
    if (psOptionsForBinary == nullptr)
        return;

    CPLFree(psOptionsForBinary->pszSource);
    CPLFree(psOptionsForBinary->pszDest);
    CSLDestroy(psOptionsForBinary->papszOpenOptions);
    CPLFree(psOptionsForBinary->pszFormat);
    CSLDestroy(psOptionsForBinary->papszAllowInputDrivers);
    CPLFree(psOptionsForBinary);
}

/************************************************************************/
/*                                main()                                */
/************************************************************************/

MAIN_START(argc, argv)

{
    /* Check strict compilation and runtime library version as we use C++ API */
    if (!GDAL_CHECK_VERSION(argv[0]))
        exit(1);

    EarlySetConfigOptions(argc, argv);

    /* -------------------------------------------------------------------- */
    /*      Register standard GDAL drivers, and process generic GDAL        */
    /*      command options.                                                */
    /* -------------------------------------------------------------------- */
    GDALAllRegister();
    argc = GDALGeneralCmdLineProcessor(argc, &argv, 0);
    if (argc < 1)
        exit(-argc);

    for (int i = 0; argv != nullptr && argv[i] != nullptr; i++)
    {
        if (EQUAL(argv[i], "--utility_version"))
        {
            printf("%s was compiled against GDAL %s and is running against "
                   "GDAL %s\n",
                   argv[0], GDAL_RELEASE_NAME, GDALVersionInfo("RELEASE_NAME"));
            CSLDestroy(argv);
            return 0;
        }
        else if (EQUAL(argv[i], "--help"))
        {
            Usage(nullptr);
        }
        else if (EQUAL(argv[i], "--long-usage"))
        {
            Usage(nullptr, FALSE);
        }
    }

    /* -------------------------------------------------------------------- */
    /*      Set optimal setting for best performance with huge input VRT.   */
    /*      The rationale for 450 is that typical Linux process allow       */
    /*      only 1024 file descriptors per process and we need to keep some */
    /*      spare for shared libraries, etc. so let's go down to 900.       */
    /*      And some datasets may need 2 file descriptors, so divide by 2   */
    /*      for security.                                                   */
    /* -------------------------------------------------------------------- */
    if (CPLGetConfigOption("GDAL_MAX_DATASET_POOL_SIZE", nullptr) == nullptr)
    {
#if defined(__MACH__) && defined(__APPLE__)
        // On Mach, the default limit is 256 files per process
        // TODO We should eventually dynamically query the limit for all OS
        CPLSetConfigOption("GDAL_MAX_DATASET_POOL_SIZE", "100");
#else
        CPLSetConfigOption("GDAL_MAX_DATASET_POOL_SIZE", "450");
#endif
    }

    GDALTranslateOptionsForBinary *psOptionsForBinary =
        GDALTranslateOptionsForBinaryNew();
    GDALTranslateOptions *psOptions =
        GDALTranslateOptionsNew(argv + 1, psOptionsForBinary);
    CSLDestroy(argv);

    if (psOptions == nullptr)
    {
        Usage(nullptr);
    }

    if (psOptionsForBinary->pszSource == nullptr)
    {
        Usage("No source dataset specified.");
    }

    if (psOptionsForBinary->pszDest == nullptr)
    {
        Usage("No target dataset specified.");
    }

    if (strcmp(psOptionsForBinary->pszDest, "/vsistdout/") == 0)
    {
        psOptionsForBinary->bQuiet = TRUE;
    }

    if (!(psOptionsForBinary->bQuiet))
    {
        GDALTranslateOptionsSetProgress(psOptions, GDALTermProgress, nullptr);
    }

    if (psOptionsForBinary->pszFormat)
    {
        GDALDriverH hDriver =
            GDALGetDriverByName(psOptionsForBinary->pszFormat);
        if (hDriver == nullptr)
        {
            fprintf(stderr, "Output driver `%s' not recognised.\n",
                    psOptionsForBinary->pszFormat);
            fprintf(stderr, "The following format drivers are configured and "
                            "support output:\n");
            for (int iDr = 0; iDr < GDALGetDriverCount(); iDr++)
            {
                hDriver = GDALGetDriver(iDr);

                if (GDALGetMetadataItem(hDriver, GDAL_DCAP_RASTER, nullptr) !=
                        nullptr &&
                    (GDALGetMetadataItem(hDriver, GDAL_DCAP_CREATE, nullptr) !=
                         nullptr ||
                     GDALGetMetadataItem(hDriver, GDAL_DCAP_CREATECOPY,
                                         nullptr) != nullptr))
                {
                    fprintf(stderr, "  %s: %s\n",
                            GDALGetDriverShortName(hDriver),
                            GDALGetDriverLongName(hDriver));
                }
            }

            GDALTranslateOptionsFree(psOptions);
            GDALTranslateOptionsForBinaryFree(psOptionsForBinary);

            GDALDestroyDriverManager();
            exit(1);
        }
    }

    /* -------------------------------------------------------------------- */
    /*      Attempt to open source file.                                    */
    /* -------------------------------------------------------------------- */

    GDALDatasetH hDataset = GDALOpenEx(
        psOptionsForBinary->pszSource, GDAL_OF_RASTER | GDAL_OF_VERBOSE_ERROR,
        psOptionsForBinary->papszAllowInputDrivers,
        psOptionsForBinary->papszOpenOptions, nullptr);

    if (hDataset == nullptr)
    {
        GDALDestroyDriverManager();
        exit(1);
    }

    /* -------------------------------------------------------------------- */
    /*      Handle subdatasets.                                             */
    /* -------------------------------------------------------------------- */
    if (!psOptionsForBinary->bCopySubDatasets &&
        GDALGetRasterCount(hDataset) == 0 &&
        CSLCount(GDALGetMetadata(hDataset, "SUBDATASETS")) > 0)
    {
        fprintf(stderr, "Input file contains subdatasets. Please, select one "
                        "of them for reading.\n");
        GDALClose(hDataset);
        GDALDestroyDriverManager();
        exit(1);
    }

    int bUsageError = FALSE;
    GDALDatasetH hOutDS = nullptr;
    GDALDriverH hOutDriver = nullptr;

    if (psOptionsForBinary->pszFormat == nullptr)
    {
        hOutDriver = GDALGetDriverByName(
            GetOutputDriverForRaster(psOptionsForBinary->pszDest));
    }
    else
    {
        hOutDriver = GDALGetDriverByName(psOptionsForBinary->pszFormat);
    }

    if (hOutDriver == nullptr)
    {
        fprintf(stderr, "Output driver not found.\n");
        GDALClose(hDataset);
        GDALDestroyDriverManager();
        exit(1);
    }

    bool bCopyCreateSubDatasets =
        (GDALGetMetadataItem(hOutDriver, GDAL_DCAP_SUBCREATECOPY, nullptr) !=
         nullptr);

    if (psOptionsForBinary->bCopySubDatasets &&
        CSLCount(GDALGetMetadata(hDataset, "SUBDATASETS")) > 0)
    {
        if (bCopyCreateSubDatasets)
        {
            // GDAL sets the size of the dataset with subdatasets to 512x512
            // this removes the srcwin function from this operation
            hOutDS = GDALTranslate(psOptionsForBinary->pszDest, hDataset,
                                   psOptions, &bUsageError);
            GDALClose(hOutDS);
        }
        else
        {
            char **papszSubdatasets = GDALGetMetadata(hDataset, "SUBDATASETS");
            char *pszSubDest = static_cast<char *>(
                CPLMalloc(strlen(psOptionsForBinary->pszDest) + 32));

            CPLString osPath = CPLGetPath(psOptionsForBinary->pszDest);
            CPLString osBasename = CPLGetBasename(psOptionsForBinary->pszDest);
            CPLString osExtension =
                CPLGetExtension(psOptionsForBinary->pszDest);
            CPLString osTemp;

            const char *pszFormat = nullptr;
            if (CSLCount(papszSubdatasets) / 2 < 10)
            {
                pszFormat = "%s_%d";
            }
            else if (CSLCount(papszSubdatasets) / 2 < 100)
            {
                pszFormat = "%s_%002d";
            }
            else
            {
                pszFormat = "%s_%003d";
            }

            const char *pszDest = pszSubDest;

            for (int i = 0; papszSubdatasets[i] != nullptr; i += 2)
            {
                char *pszSource =
                    CPLStrdup(strstr(papszSubdatasets[i], "=") + 1);
                osTemp = CPLSPrintf(pszFormat, osBasename.c_str(), i / 2 + 1);
                osTemp = CPLFormFilename(osPath, osTemp, osExtension);
                strcpy(pszSubDest, osTemp.c_str());
                hDataset =
                    GDALOpenEx(pszSource, GDAL_OF_RASTER, nullptr,
                               psOptionsForBinary->papszOpenOptions, nullptr);
                CPLFree(pszSource);
                if (!psOptionsForBinary->bQuiet)
                    printf("Input file size is %d, %d\n",
                           GDALGetRasterXSize(hDataset),
                           GDALGetRasterYSize(hDataset));
                hOutDS =
                    GDALTranslate(pszDest, hDataset, psOptions, &bUsageError);
                if (hOutDS == nullptr)
                    break;
                GDALClose(hOutDS);
            }

            CPLFree(pszSubDest);
        }

        if (bUsageError == TRUE)
            Usage();
        GDALClose(hDataset);
        GDALTranslateOptionsFree(psOptions);
        GDALTranslateOptionsForBinaryFree(psOptionsForBinary);

        GDALDestroy();
        return 0;
    }

    if (!psOptionsForBinary->bQuiet)
        printf("Input file size is %d, %d\n", GDALGetRasterXSize(hDataset),
               GDALGetRasterYSize(hDataset));

    hOutDS = GDALTranslate(psOptionsForBinary->pszDest, hDataset, psOptions,
                           &bUsageError);
    if (bUsageError == TRUE)
        Usage();
    int nRetCode = hOutDS ? 0 : 1;

    /* Close hOutDS before hDataset for the -f VRT case */
    if (GDALClose(hOutDS) != CE_None)
    {
        nRetCode = 1;
        if (CPLGetLastErrorType() == CE_None)
        {
            CPLError(CE_Failure, CPLE_AppDefined,
                     "Unknown error occurred in GDALClose()");
        }
    }
    GDALClose(hDataset);
    GDALTranslateOptionsFree(psOptions);
    GDALTranslateOptionsForBinaryFree(psOptionsForBinary);

    GDALDestroy();

    return nRetCode;
}
MAIN_END
