/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (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.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 *   John A. Taylor
 */

#include "nsNetUtil.h"
#include "nsIEventQueueService.h"
#include "nsIServiceManager.h"
#include "nsIInterfaceRequestor.h"
#include "nsIProgressEventSink.h"
#include "nsIComponentManager.h"
#include "prprf.h"
#include "nsISupportsPrimitives.h"
#include "nsTimer.h"
#include "prlong.h"
#include "plstr.h"
#include "nsSupportsArray.h"
#include <fstream.h>

int getStrLine(const char *src, char *str, int ind, int max);
nsresult auxLoad(char *uriBuf);
//----------------------------------------------------------------------


#define RETURN_IF_FAILED(rv, step) \
    PR_BEGIN_MACRO \
    if (NS_FAILED(rv)) { \
        printf(">>> %s failed: rv=%x\n", step, rv); \
        return rv;\
    } \
    PR_END_MACRO

static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
static nsIEventQueue* gEventQ = nsnull;
static PRBool gKeepRunning = PR_FALSE;
static nsString globalStream;
//static char urlBuf[256];
static nsCOMPtr<nsIURI> baseURI;
static nsCOMPtr<nsISupportsArray> uriList;

//Temp, should remove:
static int numStart=0;
static int numFound=0;


//--------writer fun----------------------

static NS_METHOD streamParse (nsIInputStream* in,
                              void* closure,
                              const char* fromRawSegment,
                              PRUint32 toOffset,
                              PRUint32 count,
                              PRUint32 *writeCount) {

  char parseBuf[2048], loc[2048], lineBuf[2048];
  char *loc_t, *loc_t2;
  int i = 0;
  char *tmp;

  if(globalStream.Length() > 0) {
    globalStream.AppendWithConversion(fromRawSegment);
    tmp = globalStream.ToNewCString();
    //printf("\n>>NOW:\n^^^^^\n%s\n^^^^^^^^^^^^^^", tmp);
  } else {
    tmp = (char *)fromRawSegment;
  }
  
  while(i < (int)count) {
    i = getStrLine(tmp, lineBuf, i, count);
    if(i < 0) {
      *writeCount = count;
      return NS_OK;
    }
    parseBuf[0]='\0';
    if((loc_t=PL_strcasestr(lineBuf, "img"))!= NULL 
       || (loc_t=PL_strcasestr(lineBuf, "script"))!=NULL) {
      loc_t2=PL_strcasestr(loc_t, "src");
      if(loc_t2!=NULL) {
        loc_t2+=3;
        strcpy(loc, loc_t2);
        sscanf(loc, "=\"%[^\"]", parseBuf);
        if(parseBuf[0]=='\0')
          sscanf(loc, "=%s", parseBuf);         
        if(parseBuf[0]!='\0'){
          numFound++;
          auxLoad(parseBuf);
        }     
      }
    }

    /***NEED BETTER CHECK FOR STYLESHEETS
    if((loc_t=PL_strcasestr(lineBuf, "link"))!= NULL) { 
       loc_t2=PL_strcasestr(loc_t, "href");
      if(loc_t2!=NULL) {
        loc_t2+=4;
        strcpy(loc, loc_t2);
        //printf("%s\n", loc);
        sscanf(loc, "=\"%[^\"]", parseBuf);
        if(parseBuf[0]!='\0'){
          //printf("%s\n", parseBuf);
          numFound++;
          auxLoad(parseBuf);
        }     
      }
    }
    */
    if((loc_t=PL_strcasestr(lineBuf, "background"))!=NULL) {
      loc_t+=10;
      strcpy(loc, loc_t);
      sscanf(loc, "=\"%[^\"]", parseBuf);
      if(parseBuf[0]!='\0') {
        numFound++;
        auxLoad(parseBuf);
      }
    }
    i++;
    
  }
  *writeCount = count;
  return NS_OK;
}

//-----------------------------------------------------------------------------
// nsIStreamListener implementation
//-----------------------------------------------------------------------------

class MyListener : public nsIStreamListener
{
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIREQUESTOBSERVER
    NS_DECL_NSISTREAMLISTENER

    MyListener() { NS_INIT_ISUPPORTS(); }
    virtual ~MyListener() {}
};

NS_IMPL_ISUPPORTS2(MyListener,
                   nsIRequestObserver,
                   nsIStreamListener)

NS_IMETHODIMP
MyListener::OnStartRequest(nsIRequest *req, nsISupports *ctxt)
{
  //printf(">>> OnStartRequest\n");
    numStart++;
    return NS_OK;
}

NS_IMETHODIMP
MyListener::OnStopRequest(nsIRequest *req, nsISupports *ctxt, nsresult status)
{
    //printf(">>> OnStopRequest status=%x\n", status);
    gKeepRunning--;
    return NS_OK;
}

NS_IMETHODIMP
MyListener::OnDataAvailable(nsIRequest *req, nsISupports *ctxt,
                            nsIInputStream *stream,
                            PRUint32 offset, PRUint32 count)
{
    //printf(">>> OnDataAvailable [count=%u]\n", count);
    nsresult rv;
    PRUint32 bytesRead=0;
    int i=0;
    char buf[1024];
   
    if(ctxt == nsnull) {
      bytesRead=0;
      rv = stream->ReadSegments(streamParse, &offset, count, &bytesRead);
    } else {
      while (count) {
        PRUint32 amount = PR_MIN(count, sizeof(buf));
        rv = stream->Read(buf, amount, &bytesRead);  
        count -= bytesRead;
      }
    }

    if (NS_FAILED(rv)) {
      printf(">>> stream->Read failed with rv=%x\n", rv);
      return rv;
    }

    return NS_OK;
}

//-----------------------------------------------------------------------------
// NotificationCallbacks implementation
//-----------------------------------------------------------------------------

class MyNotifications : public nsIInterfaceRequestor
                      , public nsIProgressEventSink
{
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIINTERFACEREQUESTOR
    NS_DECL_NSIPROGRESSEVENTSINK

    MyNotifications() { NS_INIT_ISUPPORTS(); }
    virtual ~MyNotifications() {}
};

NS_IMPL_THREADSAFE_ISUPPORTS2(MyNotifications,
                              nsIInterfaceRequestor,
                              nsIProgressEventSink)

NS_IMETHODIMP
MyNotifications::GetInterface(const nsIID &iid, void **result)
{
    return QueryInterface(iid, result);
}

NS_IMETHODIMP
MyNotifications::OnStatus(nsIRequest *req, nsISupports *ctx,
                          nsresult status, const PRUnichar *statusText)
{
    //printf("status: %x\n", status);
    return NS_OK;
}

NS_IMETHODIMP
MyNotifications::OnProgress(nsIRequest *req, nsISupports *ctx,
                            PRUint32 progress, PRUint32 progressMax)
{
    //printf("progress: %u/%u\n", progress, progressMax);
    return NS_OK;
}

//-----------------------------------------------------------------------------
// main, etc..
//-----------------------------------------------------------------------------

nsresult NS_AutoregisterComponents()
{

  nsresult rv = nsComponentManager::AutoRegister(nsIComponentManager::NS_Startup, NULL /* default */);
  return rv;
}

//---------getStrLine Helper function---------------
//Finds a newline in src starting at ind. Puts the
//line in str (must be big enough). Returns the index
//of the newline, or -1 if at end of string. If reaches 
//end of string ('\0'), then will copy contents to 
//globalStream. 
int getStrLine(const char *src, char *str, int ind, int max) {
  char c = src[ind];
  int i=0;
  globalStream.AssignWithConversion("\0");
  while(c!='\n' && c!='\0' && i<max) {
    str[i] = src[ind];
    i++; ind++;
    c = src[ind];
  }
  str[i]='\0';
  if(i==max || c=='\0') {
    globalStream.AssignWithConversion(str);
    //printf("\nCarryover (%d|%d):\n------------\n%s\n-------\n",i,max,str);
    return -1;
  }
  return ind;
}

//----------AUX LOAD-----------
nsresult auxLoad(char *uriBuf)
{
    nsresult rv;
    
    nsCOMPtr<nsISupportsPRBool> myBool = do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID);

    nsCOMPtr<nsIURI> uri;
    nsCOMPtr<nsIChannel> chan;
    nsCOMPtr<nsIStreamListener> listener = new MyListener();
    nsCOMPtr<nsIInterfaceRequestor> callbacks = new MyNotifications();

    printf("Getting: %s", uriBuf);

    //If relative link
    if(strncmp(uriBuf, "http:", 5)) {
      //Relative link
      rv = NS_NewURI(getter_AddRefs(uri), uriBuf, baseURI);
      if (NS_FAILED(rv)) return(rv);
    } else {
      //Absolute link, no base needed
      rv = NS_NewURI(getter_AddRefs(uri), uriBuf);
      if (NS_FAILED(rv)) return(rv);
    }
    
    //Compare to see if exists
    PRUint32 num;
    uriList->Count(&num);
    PRBool equal;
    nsCOMPtr<nsIURI> uriTmp;
    for(PRUint32 i = 0; i < num; i++) {
      uriList->GetElementAt(i, getter_AddRefs(uriTmp));
      uri->Equals(uriTmp, &equal);
      if(equal) {
        printf("(duplicate, canceling)\n",uriBuf); 
        return NS_OK;
      }
    }
    printf("\n");
    uriList->AppendElement(uri);
    rv = NS_OpenURI(getter_AddRefs(chan), uri, nsnull, nsnull, callbacks);
    RETURN_IF_FAILED(rv, "NS_OpenURI");
    
    gKeepRunning++;
    rv = chan->AsyncOpen(listener, myBool);
    RETURN_IF_FAILED(rv, "AsyncOpen");

    return NS_OK;
    
}

//---------Buffer writer fun---------


//---------MAIN-----------

int main(int argc, char **argv)
{
    nsresult rv;
 
    if (argc == 1) {
        printf("usage: TestPageLoad <url>\n");
        return -1;
    }

    PRTime start, finish;

    rv = NS_NewISupportsArray(getter_AddRefs(uriList));
    RETURN_IF_FAILED(rv, "NS_NewISupportsArray");

    rv = NS_AutoregisterComponents();
    RETURN_IF_FAILED(rv, "NS_AutoregisterComponents");

    // Create the Event Queue for this thread...
    nsCOMPtr<nsIEventQueueService> eqs = 
             do_GetService(kEventQueueServiceCID, &rv);
    RETURN_IF_FAILED(rv, "do_GetService(EventQueueService)");

    rv = eqs->CreateMonitoredThreadEventQueue();
    RETURN_IF_FAILED(rv, "CreateMonitoredThreadEventQueue");

    rv = eqs->GetThreadEventQueue(NS_CURRENT_THREAD, &gEventQ);
    RETURN_IF_FAILED(rv, "GetThreadEventQueue");

    printf("Loading necko ... \n");
    nsCOMPtr<nsIChannel> chan;
    nsCOMPtr<nsIStreamListener> listener = new MyListener();
    nsCOMPtr<nsIInterfaceRequestor> callbacks = new MyNotifications();

    rv = NS_NewURI(getter_AddRefs(baseURI), argv[1]);
    RETURN_IF_FAILED(rv, "NS_NewURI");

    rv = NS_OpenURI(getter_AddRefs(chan), baseURI, nsnull, nsnull, callbacks);
    RETURN_IF_FAILED(rv, "NS_OpenURI");
    gKeepRunning++;

    //TIMER STARTED-----------------------
    printf("Starting clock ... \n");
    start = PR_Now();
    rv = chan->AsyncOpen(listener, nsnull);
    RETURN_IF_FAILED(rv, "AsyncOpen");

    while (gKeepRunning) {
        gEventQ->ProcessPendingEvents();
    }

    finish = PR_Now();
    PRUint32 totalTime32;
    PRUint64 totalTime64;
    LL_SUB(totalTime64, finish, start);
    LL_L2UI(totalTime32, totalTime64);
 
    printf("\n\n--------------------\nAll done:\nnum found:%d\nnum start:%d\n", numFound, numStart);
 
    printf("\n\n>>PageLoadTime>>%u>>\n\n", totalTime32);
 
    return 0;
}