/******************************************************************************
 *
 * Project:  GDAL Utilities
 * Purpose:  Command line utility for GDAL identify, delete, rename and copy
 *           (by file) operations.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 * ****************************************************************************
 * Copyright (c) 2007, Frank Warmerdam
 * Copyright (c) 2008-2009, 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 "cpl_conv.h"
#include "gdal_version.h"
#include "gdal.h"
#include "commonutils.h"

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

static void Usage(bool bIsError)

{
    fprintf(bIsError ? stderr : stdout,
            "Usage: gdalmanage [--help] [--help-general]\n"
            "    or gdalmanage identify [-r|-fr] [-u] <files>*\n"
            "    or gdalmanage copy [-f <driver>] <oldname> <newname>\n"
            "    or gdalmanage rename [-f <driver>] <oldname> <newname>\n"
            "    or gdalmanage delete [-f <driver>] <datasetname>\n");
    exit(bIsError ? 1 : 0);
}

/************************************************************************/
/*                       ProcessIdentifyTarget()                        */
/************************************************************************/

static void ProcessIdentifyTarget(const char *pszTarget,
                                  char **papszSiblingList, bool bRecursive,
                                  bool bReportFailures, bool bForceRecurse)

{
    GDALDriverH hDriver;
    VSIStatBufL sStatBuf;
    int i;

    hDriver = GDALIdentifyDriver(pszTarget, papszSiblingList);

    if (hDriver != nullptr)
        printf("%s: %s\n", pszTarget, GDALGetDriverShortName(hDriver));
    else if (bReportFailures)
        printf("%s: unrecognized\n", pszTarget);

    if (!bForceRecurse && (!bRecursive || hDriver != nullptr))
        return;

    if (VSIStatL(pszTarget, &sStatBuf) != 0 || !VSI_ISDIR(sStatBuf.st_mode))
        return;

    papszSiblingList = VSIReadDir(pszTarget);
    for (i = 0; papszSiblingList && papszSiblingList[i]; i++)
    {
        if (EQUAL(papszSiblingList[i], "..") || EQUAL(papszSiblingList[i], "."))
            continue;

        CPLString osSubTarget =
            CPLFormFilename(pszTarget, papszSiblingList[i], nullptr);

        ProcessIdentifyTarget(osSubTarget, papszSiblingList, bRecursive,
                              bReportFailures, bForceRecurse);
    }
    CSLDestroy(papszSiblingList);
}

/************************************************************************/
/*                              Identify()                              */
/************************************************************************/

static void Identify(int nArgc, char **papszArgv)

{
    /* -------------------------------------------------------------------- */
    /*      Scan for command line switches                                   */
    /* -------------------------------------------------------------------- */
    bool bRecursive = false;
    bool bForceRecurse = false;
    bool bReportFailures = false;

    int i = 0;
    for (; i < nArgc && papszArgv[i][0] == '-'; ++i)
    {
        if (EQUAL(papszArgv[i], "-r"))
            bRecursive = true;
        else if (EQUAL(papszArgv[i], "-fr"))
        {
            bForceRecurse = true;
            bRecursive = true;
        }
        else if (EQUAL(papszArgv[i], "-u"))
            bReportFailures = true;
        else
            Usage(true);
    }

    /* -------------------------------------------------------------------- */
    /*      Process given files.                                            */
    /* -------------------------------------------------------------------- */
    for (; i < nArgc; ++i)
    {
        ProcessIdentifyTarget(papszArgv[i], nullptr, bRecursive,
                              bReportFailures, bForceRecurse);
    }
}

/************************************************************************/
/*                               Delete()                               */
/************************************************************************/

static void Delete(GDALDriverH hDriver, int nArgc, char **papszArgv)

{
    if (nArgc != 1)
        Usage(true);

    GDALDeleteDataset(hDriver, papszArgv[0]);
}

/************************************************************************/
/*                                Copy()                                */
/************************************************************************/

static void Copy(GDALDriverH hDriver, int nArgc, char **papszArgv,
                 const char *pszOperation)

{
    if (nArgc != 2)
        Usage(true);

    if (EQUAL(pszOperation, "copy"))
        GDALCopyDatasetFiles(hDriver, papszArgv[1], papszArgv[0]);
    else
        GDALRenameDataset(hDriver, papszArgv[1], papszArgv[0]);
}

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

MAIN_START(argc, argv)

{
    char *pszDriver = nullptr;
    GDALDriverH hDriver = nullptr;

    /* Check that we are running against at least GDAL 1.5 */
    /* Note to developers : if we use newer API, please change the requirement
     */
    if (atoi(GDALVersionInfo("VERSION_NUM")) < 1500)
    {
        fprintf(stderr,
                "At least, GDAL >= 1.5.0 is required for this version of %s, "
                "which was compiled against GDAL %s\n",
                argv[0], GDAL_RELEASE_NAME);
        exit(1);
    }

    GDALAllRegister();

    argc = GDALGeneralCmdLineProcessor(argc, &argv, 0);
    if (argc < 1)
        exit(-argc);

    for (int i = 0; i < argc; 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"));
            return 0;
        }
        else if (EQUAL(argv[i], "--help"))
        {
            Usage(false);
        }
    }

    if (argc < 3)
        Usage(true);

    /* -------------------------------------------------------------------- */
    /*      Do we have a driver specifier?                                  */
    /* -------------------------------------------------------------------- */
    char **papszRemainingArgv = argv + 2;
    int nRemainingArgc = argc - 2;

    if (EQUAL(papszRemainingArgv[0], "-f") && nRemainingArgc > 1)
    {
        pszDriver = papszRemainingArgv[1];
        papszRemainingArgv += 2;
        nRemainingArgc -= 2;
    }

    if (pszDriver != nullptr)
    {
        hDriver = GDALGetDriverByName(pszDriver);
        if (hDriver == nullptr)
        {
            fprintf(stderr, "Unable to find driver named '%s'.\n", pszDriver);
            exit(1);
        }
    }

    /* -------------------------------------------------------------------- */
    /*      Split out based on operation.                                   */
    /* -------------------------------------------------------------------- */
    if (STARTS_WITH_CI(argv[1], "ident" /* identify" */))
        Identify(nRemainingArgc, papszRemainingArgv);

    else if (EQUAL(argv[1], "copy"))
        Copy(hDriver, nRemainingArgc, papszRemainingArgv, "copy");

    else if (EQUAL(argv[1], "rename"))
        Copy(hDriver, nRemainingArgc, papszRemainingArgv, "rename");

    else if (EQUAL(argv[1], "delete"))
        Delete(hDriver, nRemainingArgc, papszRemainingArgv);

    else
        Usage(true);

    /* -------------------------------------------------------------------- */
    /*      Cleanup                                                         */
    /* -------------------------------------------------------------------- */
    CSLDestroy(argv);
    GDALDestroyDriverManager();

    exit(0);
}

MAIN_END