/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * 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:
 *
 * Copyright (C) 2008 Novell, Inc.
 * Copyright (C) 2009 Red Hat, Inc.
 */

#ifndef MM_PLUGIN_H
#define MM_PLUGIN_H

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

#include "mm-base-modem.h"

#define MM_PLUGIN_GENERIC_NAME "Generic"

#define MM_PLUGIN_MAJOR_VERSION 3
#define MM_PLUGIN_MINOR_VERSION 0

#define MM_TYPE_PLUGIN      (mm_plugin_get_type ())
#define MM_PLUGIN(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj), MM_TYPE_PLUGIN, MMPlugin))
#define MM_IS_PLUGIN(obj)   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MM_TYPE_PLUGIN))
#define MM_PLUGIN_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), MM_TYPE_PLUGIN, MMPlugin))

typedef struct _MMPlugin MMPlugin;

typedef MMPlugin *(*MMPluginCreateFunc) (void);

typedef enum {
    MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED = 0x0,
    MM_PLUGIN_SUPPORTS_PORT_DEFER,
    MM_PLUGIN_SUPPORTS_PORT_DEFER_UNTIL_SUGGESTED,
    MM_PLUGIN_SUPPORTS_PORT_SUPPORTED
} MMPluginSupportsResult;

struct _MMPlugin {
    GTypeInterface g_iface;

    /* Get plugin name */
    const char *(*get_name)   (MMPlugin *self);

    /* Returns TRUE if the plugin should be sorted last in the list of plugins
     * loaded. This is useful to indicate plugins that need an additional check
     * on the probed vendor ID to see if they can support it. */
    gboolean (*get_sort_last) (const MMPlugin *self);

    /* Check whether a plugin supports a particular modem port, and what level
     * of support the plugin has for the device.
     * The check is done always asynchronously. When the result of the check is
     * ready, the passed callback will be called, and the result will be ready
     * to get retrieved with supports_port_finish().
     */
    void (* supports_port) (MMPlugin *self,
                            const gchar *subsys,
                            const gchar *name,
                            const gchar *physdev_path,
                            MMBaseModem *existing,
                            GAsyncReadyCallback callback,
                            gpointer user_data);

    /* Allows to get the result of an asynchronous port support check. */
    MMPluginSupportsResult (* supports_port_finish) (MMPlugin *self,
                                                     GAsyncResult *result,
                                                     GError **error);

    /* Called to cancel an ongoing supports_port() operation or to notify the
     * plugin to clean up that operation.  For example, if two plugins support
     * a particular port, but the first plugin grabs the port, this method will
     * be called on the second plugin to allow that plugin to clean up resources
     * used while determining it's level of support for the port.
     */
    void (*supports_port_cancel) (MMPlugin *self,
                                  const char *subsys,
                                  const char *name);

    /* Will only be called if the plugin returns a value greater than 0 for
     * the supports_port() method for this port.  The plugin should create and
     * return a  new modem for the port's device if there is no existing modem
     * to handle the port's hardware device, or should add the port to an
     * existing modem and return that modem object.  If an error is encountered
     * while claiming the port, the error information should be returned in the
     * error argument, and the plugin should return NULL.
     */
    MMBaseModem * (*grab_port)    (MMPlugin *self,
                                   const char *subsys,
                                   const char *name,
                                   MMBaseModem *existing,
                                   GError **error);
};

GType mm_plugin_get_type (void);

const char *mm_plugin_get_name   (MMPlugin *plugin);

gboolean mm_plugin_get_sort_last (const MMPlugin *plugin);

void mm_plugin_supports_port (MMPlugin *plugin,
                              const gchar *subsys,
                              const gchar *name,
                              const gchar *physdev_path,
                              MMBaseModem *existing,
                              GAsyncReadyCallback callback,
                              gpointer user_data);

MMPluginSupportsResult mm_plugin_supports_port_finish (MMPlugin *plugin,
                                                       GAsyncResult *result,
                                                       GError **error);

void mm_plugin_supports_port_cancel (MMPlugin *plugin,
                                     const char *subsys,
                                     const char *name);

MMBaseModem *mm_plugin_grab_port    (MMPlugin *plugin,
                                     const char *subsys,
                                     const char *name,
                                     MMBaseModem *existing,
                                     GError **error);

#endif /* MM_PLUGIN_H */