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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
 *            admin_connection.cc
 *
 *  Thu Feb  3 09:33:44 CET 2011
 *  Copyright 2011 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of Pracro.
 *
 *  Pracro is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Pracro is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Pracro; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include "admin_connection.h"

#include "admin_rc.h"
#include "admin_export.h"

#include "debug.h"

#include "configuration.h"

static std::string admin_sessionunlock(Environment &env, std::string id)
{
  Session *session = env.sessions.session(id);
  if(session) {
    if(session->isreadonly) {
      env.sessions.deleteSession(id);
      return "Session " + id + " was 'readonly' and has been discarded.";
    } else {
      session->setActive(false);
      return "Session " + id + " has been deactivated (set to idle).";
    }
  }
  return "Session " + id + " does not exist or has been committed.";
}

static std::string admin_listactivesessions(Environment &env)
{
  std::string str;

  std::vector<std::string> act = env.sessions.activeSessions();
  std::vector<std::string>::iterator i = act.begin();
  while(i != act.end()) {
    Session *s = env.sessions.session(*i);
    SessionAutolock lock(*s);
    str += "Session " + *i + ": "+s->templ+" on "+s->patientid+" "+
      std::string(s->active()?"[active]":"[idle]")+"\n";
    i++;
  }

  return str;
}

static std::string admin_header(std::string uri)
{
  return admin_rc("header1") + uri + admin_rc("header2");
}

static std::string admin_flush(Environment &env)
{
  env.sessions.store();
  return "All sessions flushed to disc in " + Conf::session_path + ".";
}

AdminConnection::AdminConnection(Environment &e, headers_t a, std::string u)
  : env(e), args(a), uri(u) {}

AdminConnection::~AdminConnection() {}

bool AdminConnection::handle(const char *data, size_t size)
{
  status = 200; // OK

  if(data == NULL && size == 0) {
    DEBUG(admin, "URI: %s\n", uri.c_str());

    if(uri == "/") {
      reply = admin_header(uri) + 
        "Command list:\n"
        "<strong>/sessionunlock?id=<em>[ID]</em></strong> unlock session with [ID] as its session id.\n"
        "<strong>/listactivesessions</strong> lists all active sessions on the server.\n"
        "<strong>/flushsessions</strong> flushes all active sessions to disc.\n"
        "<strong>/export?template=<em>[TEMPLATE]</em></strong> export template with name [TEMPLATE] to a\n  csf file (comma seperated file, that can be opened in OOCalc or Excel).\n"
        + admin_rc("footer");
      return true;
    }

    if(uri == "/sessionunlock" && args.find("id") != args.end()) {
      reply = admin_header(uri) + admin_sessionunlock(env, args["id"])
        + admin_rc("footer");
      return true;
    }

    if(uri == "/listactivesessions") {
      reply = admin_header(uri) + admin_listactivesessions(env)
        + admin_rc("footer");
      return true;
    }

    if(uri == "/flushsessions") {
      reply = admin_header(uri) + admin_flush(env) + admin_rc("footer");
      return true;
    }

    if(uri == "/export" && args.find("template") != args.end()) {
      bool ok;
      std::string res = admin_export(env, args["template"], &ok);
      if(!ok) reply = admin_header(uri) + res + admin_rc("footer");
      else {
        reply = res;
        hdrs["Content-Type"] = "text/csv; charset=UTF-8";
        hdrs["Content-Disposition"] = "attachment; filename=\""+args["template"]+".csv\"";
      }
      return true;
    }

    if(uri == "/favicon.ico") {
      hdrs["Content-Type"] = "image/ico";
      reply = admin_rc("favicon");
      return true;
    }

    reply = admin_header(uri) +
      "'" + uri + "' not recognised as a valid command."
      + admin_rc("footer");
    return true;
  }

  return true;
}

void AdminConnection::getReply(Httpd::Reply &r)
{
  if(hdrs.find("Content-Type") == hdrs.end())
    hdrs["Content-Type"] = "text/html; charset=UTF-8";

  r.data = reply;
  r.headers = hdrs;
  r.status = status; // http 'OK'
}