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/*
 * transmission-remote-gtk - A GTK RPC client to Transmission
 * Copyright (C) 2011  Alan Fitton

 * This program 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.

 * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/* trg-client.h */

#ifndef _TRG_CLIENT_H_
#define _TRG_CLIENT_H_

#define TRANSMISSION_MIN_SUPPORTED 2.0
#define X_TRANSMISSION_SESSION_ID_HEADER_PREFIX "X-Transmission-Session-Id: "
#define TRG_MAX_RETRIES 3

#define TORRENT_GET_MODE_FIRST 0
#define TORRENT_GET_MODE_ACTIVE 1
#define TORRENT_GET_MODE_INTERACTION 2
#define TORRENT_GET_MODE_UPDATE 3

#define TORRENT_GET_TAG_MODE_FULL -1
#define TORRENT_GET_TAG_MODE_UPDATE -2

#define TRG_NO_HOSTNAME_SET -2
#define SESSION_UPDATE_DIVISOR 10

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <curl/curl.h>
#include <curl/easy.h>

#include <json-glib/json-glib.h>
#include <glib-object.h>

#include "trg-prefs.h"
#include "session-get.h"

#define HTTP_URI_PREFIX "http"
#define HTTPS_URI_PREFIX "https"
#define HTTP_OK 200
#define HTTP_CONFLICT 409

#define FAIL_JSON_DECODE -2
#define FAIL_RESPONSE_UNSUCCESSFUL -3
#define DISPATCH_POOL_SIZE 3


typedef struct {
    int status;
    char *raw;
    int size;
    JsonObject *obj;
    gpointer cb_data;
} trg_response;

typedef struct
{
	JsonNode *node;
	gchar *str;
    GSourceFunc callback;
    gpointer cb_data;
} trg_request;

G_BEGIN_DECLS

#define TRG_TYPE_CLIENT trg_client_get_type()

#define TRG_CLIENT(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST ((obj), TRG_TYPE_CLIENT, TrgClient))

#define TRG_CLIENT_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST ((klass), TRG_TYPE_CLIENT, TrgClientClass))

#define TRG_IS_CLIENT(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TRG_TYPE_CLIENT))

#define TRG_IS_CLIENT_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE ((klass), TRG_TYPE_CLIENT))

#define TRG_CLIENT_GET_CLASS(obj) \
  (G_TYPE_INSTANCE_GET_CLASS ((obj), TRG_TYPE_CLIENT, TrgClientClass))

typedef struct {
  GObject parent;
} TrgClient;

typedef struct {
  GObjectClass parent_class;
  void (*session_updated) (TrgClient *tc, JsonObject * session, gpointer data);

} TrgClientClass;

/* Thread local storage (TLS).
 * CURL clients can't be used concurrently.
 * So create one instance for each thread in the thread pool.
 */
typedef struct {
    /* Use a serial to figure out when there's been a configuration change
     * by comparing with priv->serial.
     * We lock updating (and checking for updates) with priv->configMutex
     */
    int serial;
    CURL *curl;
} trg_tls;

/* stuff that used to be in http.h */
void trg_response_free(trg_response *response);
int trg_http_perform(TrgClient * client, gchar * reqstr, trg_response *reqrsp);
/* end http.h*/

/* stuff that used to be in dispatch.c */
trg_response *dispatch(TrgClient * client, JsonNode * req);
trg_response *dispatch_str(TrgClient * client, gchar *req);
gboolean dispatch_async(TrgClient * client, JsonNode * req,
                        GSourceFunc callback,
                        gpointer data);
/* end dispatch.c*/

GType trg_client_get_type (void);

TrgClient* trg_client_new (void);
TrgPrefs* trg_client_get_prefs(TrgClient *tc);
int trg_client_populate_with_settings(TrgClient * tc);
void trg_client_set_session(TrgClient * tc, JsonObject * session);
float trg_client_get_version(TrgClient *tc);
const gchar *trg_client_get_version_string(TrgClient *tc);
gint64 trg_client_get_rpc_version(TrgClient *tc);
gchar *trg_client_get_password(TrgClient *tc);
gchar *trg_client_get_username(TrgClient *tc);
gchar *trg_client_get_url(TrgClient *tc);
gchar *trg_client_get_session_id(TrgClient *tc);
void trg_client_set_session_id(TrgClient *tc, gchar *session_id);
#ifndef CURL_NO_SSL
gboolean trg_client_get_ssl(TrgClient *tc);
#endif
gchar *trg_client_get_proxy(TrgClient *tc);
gint64 trg_client_get_serial(TrgClient *tc);
void trg_client_thread_pool_push(TrgClient *tc, gpointer data, GError **err);
void trg_client_set_torrent_table(TrgClient *tc, GHashTable *table);
GHashTable* trg_client_get_torrent_table(TrgClient *tc);
JsonObject* trg_client_get_session(TrgClient *tc);
void trg_client_status_change(TrgClient *tc, gboolean connected);
gboolean trg_client_get_activeonlyupdate(TrgClient *tc);
gboolean trg_client_is_connected(TrgClient *tc);
void trg_client_updateunlock(TrgClient *tc);
void trg_client_updatelock(TrgClient *tc);
guint trg_client_inc_failcount(TrgClient *tc);
guint trg_client_get_failcount(TrgClient *tc);
void trg_client_reset_failcount(TrgClient *tc);
void trg_client_inc_serial(TrgClient *tc);
guint trg_client_get_interval(TrgClient *tc);
guint trg_client_get_minimised_interval(TrgClient *tc);
void trg_client_set_interval(TrgClient *tc, guint interval);
void trg_client_set_minimised_interval(TrgClient *tc, guint interval);
void trg_client_set_activeonlyupdate(TrgClient *tc, gboolean activeOnlyUpdate);

G_END_DECLS

#endif // _TRG_CLIENT_H_