/*##############################################################################

    HPCC SYSTEMS software Copyright (C) 2012 HPCC Systems®.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
############################################################################## */


#include "platform.h"
#include "jlib.hpp"
#include "jfile.hpp"
#include "mpcomm.hpp"

#include "daclient.hpp"
#include "dasds.hpp"

void usage(const char *exe)
{
    printf("USAGE: %s <import filename> [export_filename]       OR\n", exe);
    printf("USAGE: %s -local <usage> <system> <export_filename>\n", exe);
}

static unsigned csvread(IIOStream &stream, char *dst, unsigned max, bool stopEOL=false)
{
    char *p = dst;
    char c;
    for (;;)
    { 
        if (!stream.read(1, &c))
            return 0;
        else
        {
            if (stopEOL && ('\n' == c || '\r' == c)) return 0;
            if (!isspace(c)) break;
        }
    }
    do
    {
        if (',' == c || '\n' == c || '\r' == c) { *p = '\0'; break; }
        else if (!isspace(c) && (p-dst)<max-1)
            *p++ = c;
    }
    while (stream.read(1, &c));
    return p-dst;
}

int main(int argc, char* argv[])
{
    InitModuleObjects();
    EnableSEHtoExceptionMapping();

    if (argc<2)
    {
        usage(argv[0]);
        return 0;
    }

    CCapabilityExporter exporter(CLIENT_ENCRYPT_KEY);
    try
    {
        StringBuffer exportFname;
        if ('-' == *argv[1])
        {
            if (0!=stricmp(argv[1]+1, "local") || argc<5)
            {
                usage(argv[0]);
                return 0;           
            }
            DaliClientRole roleType = CSystemCapability::decodeRole(argv[2]);
            if (DCR_Unknown == roleType)
                throw MakeStringException(0, "Unknown role: %s", argv[2]);
            const char *system = argv[3];

            CSystemCapability sc(roleType, system);
            StringBuffer s;
            dumpMAC(sc, s);
            PROGLOG("MAC detected: %s", s.str());
            dumpCPUSN(sc, s.clear());
            PROGLOG("CPU SN detected: %s", s.str());
            exportFname.append(argv[4]);
            OwnedIFile ifile = createIFile(exportFname.str());
            OwnedIFileIO ifileio = ifile->open(IFOcreate);
            OwnedIFileIOStream stream = createBufferedIOStream(ifileio);
            exporter.export(*stream);
        }
        else
        {
            const char *filename = argv[1];
            if (argc>2) exportFname.append(argv[2]);
            else
            {
                char *dot = strchr(filename, '.');
                if (!dot || (0 == stricmp("scd", dot+1)))
                    exportFname.append(filename);
                else
                    exportFname.append(dot-filename, filename);
                exportFname.append(".scd");
            }

            OwnedIFile ifile = createIFile(filename);
            OwnedIFileIO ifileio = ifile->open(IFOread);
            OwnedIFileIOStream stream = createBufferedIOStream(ifileio);

            char system[9], role[51], addr[18], cpusn[26];
            PROGLOG("Reading capabilities");
            while (csvread(*stream, system, sizeof(system)))
            {
                DaliClientRole roleType;
                if (!csvread(*stream, role, sizeof(role))) throw MakeStringException(0, "Invalid format (role)");
                else
                {
                    roleType = CSystemCapability::decodeRole(role);
                    if (DCR_Unknown == roleType)
                        throw MakeStringException(0, "Unknown role: %s", role);
                }
                unsigned addrLength = csvread(*stream, addr, sizeof(addr));
                if (!addrLength)
                    throw MakeStringException(0, "Invalid format address)");
                unsigned cpuSNLength = csvread(*stream, cpusn, sizeof(cpusn), true);
                exporter.add(roleType, system, addr, cpuSNLength?cpusn:NULL);
            }

            ifile.setown(createIFile(exportFname.str()));
            ifileio.setown(ifile->open(IFOcreate));
            stream.setown(createBufferedIOStream(ifileio));

            exporter.export(*stream);
        }
        PROGLOG("Capabilities exported to %s", exportFname.str());
    }
    catch (IException *e)
    {
        EXCLOG(e);
        e->Release();
    }

    closedownClientProcess();
    releaseAtoms();
    return 0;
}