/* libquvi

 * Copyright (C) 2012,2013  Toni Gundogdu <legatvs@gmail.com>

 *

 * This file is part of libquvi <http://quvi.sourceforge.net/>.

 *

 * This library is free software: you can redistribute it and/or

 * modify it under the terms of the GNU Affero General Public

 * License as published by the Free Software Foundation, either

 * version 3 of the License, or (at your option) any later version.

 *

 * This library 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 Affero General Public License for more details.

 *

 * You should have received a copy of the GNU Affero General

 * Public License along with this library.  If not, see

 * <http://www.gnu.org/licenses/>.

 */

#include "config.h"

#include <glib/gi18n-lib.h>

#include <glib.h>

#include <lauxlib.h>

#include "quvi.h"

/* -- */

#include "_quvi_s.h"

#include "_quvi_http_metainfo_s.h"

#include "_quvi_net_s.h"

#include "_quvi_macro.h"

/* -- */

#include "net/handle.h"

extern QuviError l_exec_util_to_file_ext(_quvi_t, const gchar*, GString*);

extern QuviError c_http_metainfo(_quvi_t, _quvi_net_t);

static const gdouble MIN_LIKELY_MEDIA_LENGTH = 50*1024;

static QuviError _http_metainfo(_quvi_http_metainfo_t qmi)

{

  _quvi_net_t n;

  QuviError rc;

  _quvi_t q;

  q = qmi->handle.quvi;

  n = n_new(q, qmi->url.input->str);

  if (q->cb.http_metainfo != NULL)

    rc = q->cb.http_metainfo(n);

  else

    rc = c_http_metainfo(q, n); /* Query using cURL (default). */

  if (rc == QUVI_OK)

    {

      rc = l_exec_util_to_file_ext(q, n->http_metainfo.content_type->str,

                                   qmi->file_ext);

      if (rc == QUVI_OK)

        {

          g_string_assign(qmi->content_type, n->http_metainfo.content_type->str);

          qmi->length_bytes = n->http_metainfo.content_length;

        }

      if (q->cb.status != NULL)

        {

          const glong p = q_makelong(QUVI_CALLBACK_STATUS_HTTP_QUERY_METAINFO,

                                     QUVI_CALLBACK_STATUS_DONE);

          if (q->cb.status(p, 0, q->cb.userdata.status) != QUVI_OK)

            rc = QUVI_ERROR_CALLBACK_ABORTED;

        }

    }

  else

    {

      /* Save returned error message. */

      if (n->status.errmsg->len >0)

        g_string_assign(q->status.errmsg, n->status.errmsg->str);

      else

        {

          g_string_assign(q->status.errmsg,

                          "unknown error: http_metainfo: callback returned "

                          "an empty errmsg");

        }

    }

  q->status.resp_code = n->status.resp_code;

  n_free(n);

  return (rc);

}

QuviError n_http_metainfo(_quvi_http_metainfo_t qmi)

{

  _quvi_t q;

  gchar *s;

  q = qmi->handle.quvi;

  s = g_uri_parse_scheme(qmi->url.input->str);

  if (s != NULL) /* HTTP(S) only. */

    {

      const gboolean r = (gboolean) g_strcmp0(s, "http") == 0

                         || g_strcmp0(s, "https") == 0;

      g_free(s);

      s = NULL;

      if (r == FALSE)

        return (QUVI_OK); /* Skip process. */

    }

  else

    {

      g_string_printf(q->status.errmsg,

                      _("Failed to parse URL: %s"), qmi->url.input->str);

      return (QUVI_ERROR_INVALID_ARG); /* Skip process. */

    }

  if (q->cb.status != NULL)

    {

      const glong p = q_makelong(QUVI_CALLBACK_STATUS_HTTP_QUERY_METAINFO, 0);

      if (q->cb.status(p, 0, q->cb.userdata.status) != QUVI_OK)

        return (QUVI_ERROR_CALLBACK_ABORTED);

    }

  return (_http_metainfo(qmi));

}

/* vim: set ts=2 sw=2 tw=72 expandtab: */