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// reserved.
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// to the terms of the GNU General Public License as published by the
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// fspropcalc_t.cpp -- the fs property calculator test driver
#include "fs/stdfs.h"
#include "fs/fspropcalc.h"
#include "core/debug.h"
#include "core/archive.h"
#include "core/fsservices.h"
#include "fco/fcopropset.h"
#include "fs/fspropset.h"
#include "fs/fsdatasourceiter.h"
#include "twtest/test.h"
#include "fco/fco.h"

#include <iostream>
#include <fstream>
#include <unistd.h>
#include <fcntl.h>

///////////////////////////////////////////////////////////////////////////////
// PrintProps -- prints out all the valid property names and values as pairs...
///////////////////////////////////////////////////////////////////////////////

static void PrintProps(const iFCO* pFCO)
{
    cDebug d("PrintProps");
    const iFCOPropSet* pSet = pFCO->GetPropSet();
    const cFCOPropVector& v = pSet->GetValidVector();
    
    for(int i=0; i<pSet->GetNumProps(); i++)
    {
        if(v.ContainsItem(i))
        {
            d.TraceDebug("[%d] %s\t%s\n", i, pSet->GetPropName(i).c_str(), pSet->GetPropAt(i)->AsString().c_str());
        }
    }
}

void TestFSPropCalc()
{
    cDebug d("TestFSPropCalc");
    cFSDataSourceIter ds;
    TSTRING foo_bin = TwTestPath("foo.bin");
    
    //iFSServices* pFSServices = iFSServices::GetInstance();

    // oh boy! I finally get to test property calculation!
    d.TraceDebug("Creating FCO c:\\temp\\foo.bin\n");

    std::ofstream fstr(foo_bin.c_str());
    if(fstr.bad())
    {
        d.TraceError("Unable to create test file %s!\n", foo_bin.c_str());
        TEST(false);
    }
    fstr.close();
    
    cFileArchive arch;
    arch.OpenReadWrite(foo_bin.c_str(), true);
    arch.WriteBlob("\x1\x2\x3\x4\x5\x6\x7\x8\x9\x0", 10);
    arch.Close();
    
    // get the fco but none of its children...
    ds.SeekToFCO(cFCOName(foo_bin), false);
    iFCO* pFCO = ds.CreateFCO();
    TEST(pFCO);

    // create the calculator and set some properties to calculate...
    cFSPropCalc propCalc;
    cFCOPropVector v(pFCO->GetPropSet()->GetValidVector().GetSize());
    v.AddItem(cFSPropSet::PROP_DEV);
    v.AddItem(cFSPropSet::PROP_CTIME);
    v.AddItem(cFSPropSet::PROP_SIZE);
    v.AddItem(cFSPropSet::PROP_BLOCKS);
    v.AddItem(cFSPropSet::PROP_CRC32);
    v.AddItem(cFSPropSet::PROP_MD5);
    propCalc.SetPropVector(v);

    // finally, do the calculation
    pFCO->AcceptVisitor(&propCalc);

    // see what properties were evaluated...
    PrintProps(pFCO);

    d.TraceDebug("CRC32 should be \"2ARm2G\"\n");
    d.TraceDebug("MD5 should be \"1.Oyjj1dbom.DF2KktvtQe\"\n");

    // if we do it with "Leave", then nothing should change...
    d.TraceDebug("Changing collision action to Leave; the following run should _not_ call Stat()\n");
    propCalc.SetCollisionAction(iFCOPropCalc::PROP_LEAVE);
    pFCO->AcceptVisitor(&propCalc);

    
    // test only calculating unevaluated props...
    d.TraceDebug("invalidating PROP_MD5 in fco, and changing the file. \n\tAll should remain the same except md5.\n");
    arch.OpenReadWrite(foo_bin.c_str(), true);
    arch.WriteString(_T("Bark Bark Bark\n"));
    arch.Close();

    // do the calculation
    pFCO->GetPropSet()->InvalidateProp(cFSPropSet::PROP_MD5);
    pFCO->AcceptVisitor(&propCalc);
    PrintProps(pFCO);


    // TODO -- is there any way to test the error queue in the prop calc?

    // release the fco
    pFCO->Release();

    return;
}

void TestGetSymLinkStr()
{
    std::string file = TwTestPath("12345678901234567890123456789012345678901234567890123456789012345678901234567890");
    std::string link = TwTestPath("linky");

    int fd = creat(file.c_str(), 0777);
    close(fd);

    symlink(file.c_str(), link.c_str());

    cMemoryArchive arch(1024*1024);
    TEST(cFSPropCalc::GetSymLinkStr(link, arch, 8));
    TEST(arch.Length() == (int64)file.size());
}

void RegisterSuite_FSPropCalc()
{
    RegisterTest("FSPropCalc", "Basic", TestFSPropCalc);
    RegisterTest("FSPropCalc", "GetSymLinkStr", TestGetSymLinkStr);
}