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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsAppRunner.h"

#include "prio.h"
#include "prprf.h"
#include "prenv.h"

#include "nsCRT.h"
#include "nsNativeCharsetUtils.h"
#include "nsString.h"
#include "nsXREDirProvider.h"
#include "nsXULAppAPI.h"

#include "nsIConsoleService.h"
#include "nsIConsoleMessage.h"

void WriteConsoleLog() {
  nsresult rv;

  nsCOMPtr<nsIFile> lfile;

  char* logFileEnv = PR_GetEnv("XRE_CONSOLE_LOG");
  if (logFileEnv && *logFileEnv) {
    rv = XRE_GetFileFromPath(logFileEnv, getter_AddRefs(lfile));
    if (NS_FAILED(rv)) return;
  } else {
    if (!gLogConsoleErrors) return;

    rv = nsXREDirProvider::GetUserAppDataDirectory(getter_AddRefs(lfile));
    if (NS_FAILED(rv)) return;

    lfile->AppendNative(NS_LITERAL_CSTRING("console.log"));
  }

  PRFileDesc* file;
  rv = lfile->OpenNSPRFileDesc(PR_WRONLY | PR_APPEND | PR_CREATE_FILE, 0660,
                               &file);
  if (NS_FAILED(rv)) return;

  nsCOMPtr<nsIConsoleService> csrv(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
  if (!csrv) {
    PR_Close(file);
    return;
  }

  nsTArray<RefPtr<nsIConsoleMessage>> messages;

  rv = csrv->GetMessageArray(messages);
  if (NS_FAILED(rv)) {
    PR_Close(file);
    return;
  }

  if (!messages.IsEmpty()) {
    PRExplodedTime etime;
    PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &etime);
    char datetime[512];
    PR_FormatTimeUSEnglish(datetime, sizeof(datetime), "%Y-%m-%d %H:%M:%S",
                           &etime);

    PR_fprintf(file, NS_LINEBREAK "*** Console log: %s ***" NS_LINEBREAK,
               datetime);
  }

  nsString msg;
  nsAutoCString nativemsg;

  for (auto& message : messages) {
    rv = message->GetMessageMoz(msg);
    if (NS_SUCCEEDED(rv)) {
      NS_CopyUnicodeToNative(msg, nativemsg);
      PR_fprintf(file, "%s" NS_LINEBREAK, nativemsg.get());
    }
  }

  PR_Close(file);
}