/* Copyright (C) 2001-2021 Artifex Software, Inc.
   All Rights Reserved.

   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied,
   modified or distributed except as expressly authorized under the terms
   of the license contained in the file LICENSE in this distribution.

   Refer to licensing information at http://www.artifex.com or contact
   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
   CA 94945, U.S.A., +1(415)492-9861, for further information.
*/

#include <stdio.h>
#include <windows.h>
#include <XpsObjectModel.h>
#include <XpsPrint.h>
#include <prntvpt.h>

#include "string_.h"
#include "gx.h"
#include "gserrors.h"

#undef eprintf1
#define eprintf1(str, arg) {}
#undef eprintf
#define eprintf(str) {}
#undef gs_note_error
#define gs_note_error(error) return(error)

typedef HRESULT (CALLBACK* StartXpsPrintJobType)(
    /* [string][in] */ __RPC__in_string LPCWSTR printerName,
    /* [string][in] */ __RPC__in_string LPCWSTR jobName,
    /* [string][in] */ __RPC__in_string LPCWSTR outputFileName,
    /* [in] */ __RPC__in HANDLE progressEvent,
    /* [in] */ __RPC__in HANDLE completionEvent,
    /* [size_is][in] */ __RPC__in_ecount_full(printablePagesOnCount) UINT8 *printablePagesOn,
    /* [in] */ UINT32 printablePagesOnCount,
    /* [out] */ __RPC__deref_out_opt IXpsPrintJob **xpsPrintJob,
    /* [out] */ __RPC__deref_out_opt IXpsPrintJobStream **documentStream,
    /* [out] */ __RPC__deref_out_opt IXpsPrintJobStream **printTicketStream
);

extern "C" int gp_xpsprint(char *filename, char *printername, int *result)
{
    HRESULT hr = S_OK;
    HANDLE completionEvent = NULL;
    IXpsPrintJob* job = NULL;
    IXpsPrintJobStream* jobStream = NULL;
    IXpsOMObjectFactory* xpsFactory = NULL;
    IOpcPartUri* partUri = NULL;
    IXpsOMPackage* package = NULL;
    IXpsOMPackageWriter* packageWriter = NULL;
    IXpsOMPage* xpsPage = NULL;
    IXpsOMFontResource* fontResource = NULL;
    XPS_JOB_STATUS jobStatus = {};
    HPTPROVIDER pProvider;
    HGLOBAL hGlobal = NULL;
    IStream *pCapabilities;
    BSTR *pbstrErrorMessage = NULL;
    int code = 0;
    StartXpsPrintJobType StartXpsPrintJobPtr = NULL;

    HINSTANCE dllHandle = NULL;

    /*
      Loading the DLL at run-time makes life easier with the build
      system (no need to link in the ".lib" file), and allows us to
      use the same executable on old Windows systems (XP and earlier)
      without XpsPrint.dll, and those with it (Vista and later).
     */
    if (!(dllHandle = LoadLibrary(TEXT("XpsPrint.dll"))))
    {
        *result = 0x80029C4A;
        return -15;
    }

    StartXpsPrintJobPtr = (StartXpsPrintJobType)GetProcAddress(dllHandle, "StartXpsPrintJob");
    if (!StartXpsPrintJobPtr)
    {
        *result = 0x80029C4A;
        return -16;
    }

    if (FAILED(hr = CoInitializeEx(0, COINIT_MULTITHREADED)))
    {
        *result = hr;
        code = -1;
    }

    if (SUCCEEDED(hr))
    {
        completionEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
        if (!completionEvent)
        {
            *result = hr;
            code = -2;
        }
    }

    /* Need code for PrintTIcket here */

    if (SUCCEEDED(hr))
    {
        WCHAR MBStr[64];

        code = MultiByteToWideChar(CP_ACP, 0, printername, -1, MBStr, 64);
        if (code != 0) {
            if (FAILED(hr = StartXpsPrintJobPtr(
                        (LPCWSTR)MBStr,
                        NULL,
                        NULL,
                        NULL,
                        completionEvent,
                        NULL,
                        0,
                        &job,
                        &jobStream,
                        NULL
                        )))
            {
                *result = hr;
                code = -4;
            }
        } else {
            *result = 0;
            code = -3;
            hr = -1;
        }
    }

    if (SUCCEEDED(hr))
    {
        if (FAILED(hr = CoCreateInstance(
                    __uuidof(XpsOMObjectFactory),
                    NULL,
                    CLSCTX_INPROC_SERVER,
                    __uuidof(IXpsOMObjectFactory),
                    reinterpret_cast<void**>(&xpsFactory)
                    )
                )
            )
        {
            *result = hr;
            code = -5;
        }
    }

    if (SUCCEEDED(hr))
    {
        WCHAR MBStr[MAX_PATH];

        code = MultiByteToWideChar(CP_ACP, 0, filename, -1, MBStr, MAX_PATH);
        if (code != 0) {
            if (FAILED(hr = xpsFactory->CreatePackageFromFile((LPCWSTR)MBStr, false, &package))){
                *result = hr;
                code = -7;
            }
        } else {
            hr = -1;
            *result = 0;
            code = -6;
        }
    }
    if (SUCCEEDED(hr))
    {
        if (FAILED(hr = package->WriteToStream(jobStream, FALSE))) {
            *result = hr;
            code = -8;
        }
    }

    if (SUCCEEDED(hr))
    {
        if (FAILED(hr = jobStream->Close()))
        {
            *result = hr;
            code = -9;
        }
    }
    else
    {
        // Only cancel the job if we succeeded in creating one in the first place.
        if (job)
        {
            // Tell the XPS Print API that we're giving up.  Don't overwrite hr with the return from
            // this function.
            job->Cancel();
        }
    }


    if (SUCCEEDED(hr))
    {
        if (WaitForSingleObject(completionEvent, INFINITE) != WAIT_OBJECT_0)
        {
            *result = hr = HRESULT_FROM_WIN32(GetLastError());
            code = -10;
        }
    }

    if (SUCCEEDED(hr))
    {
        if (FAILED(hr = job->GetJobStatus(&jobStatus)))
        {
            *result = hr;
            code = -11;
        }
    }

    if (SUCCEEDED(hr))
    {
        switch (jobStatus.completion)
        {
            case XPS_JOB_COMPLETED:
                break;
            case XPS_JOB_CANCELLED:
                hr = E_FAIL;
                code = -12;
                break;
            case XPS_JOB_FAILED:
                hr = E_FAIL;
                *result = jobStatus.jobStatus;
                code = -13;
                break;
            default:
                hr = E_UNEXPECTED;
                code = -14;
                break;
        }
    }

    if (fontResource)
    {
        fontResource->Release();
        fontResource = NULL;
    }

    if (xpsPage)
    {
        xpsPage->Release();
        xpsPage = NULL;
    }

    if (packageWriter)
    {
        packageWriter->Release();
        packageWriter = NULL;
    }

    if (partUri)
    {
        partUri->Release();
        partUri = NULL;
    }

    if (xpsFactory)
    {
        xpsFactory->Release();
        xpsFactory = NULL;
    }

    if (jobStream)
    {
        jobStream->Release();
        jobStream = NULL;
    }

    if (job)
    {
        job->Release();
        job = NULL;
    }

    if (completionEvent)
    {
        CloseHandle(completionEvent);
        completionEvent = NULL;
    }

    (void)FreeLibrary(dllHandle);
    CoUninitialize();

    return code;
}
