/*
 * This file Copyright (C) 2007-2008 Charles Kerr <charles@rebelbase.com>
 *
 * This file is licensed by the GPL version 2.  Works owned by the
 * Transmission project are granted a special exemption to clause 2(b)
 * so that the bulk of its code can remain under the MIT license. 
 * This exemption does not extend to derived works not owned by
 * the Transmission project.
 * 
 * $Id$
 */

#include <string.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <libtransmission/transmission.h>
#include "conf.h"
#include "tr-core.h"
#include "tr-prefs.h"
#include "lock.h"
#include "logo.h"

#define UNUSED G_GNUC_UNUSED

extern void doAction (const char * action_name, gpointer user_data );

static TrCore * myCore = 0;

static GtkActionGroup * myGroup = 0;

static void
action_cb ( GtkAction * a, gpointer user_data )
{
  doAction ( gtk_action_get_name(a), user_data );
}

#if !GTK_CHECK_VERSION(2,8,0)
#define GTK_STOCK_INFO GTK_STOCK_PROPERTIES
#endif

#if !GTK_CHECK_VERSION(2,10,0)
#define GTK_STOCK_SELECT_ALL NULL
#endif

static GtkRadioActionEntry sort_radio_entries[] =
{
  { "sort-by-activity",   NULL, N_("Sort by _Activity"),   NULL, NULL, 0 },
  { "sort-by-date-added", NULL, N_("Sort by _Date Added"), NULL, NULL, 1 },
  { "sort-by-name",       NULL, N_("Sort by _Name"),       NULL, NULL, 2 },
  { "sort-by-progress",   NULL, N_("Sort by _Progress"),   NULL, NULL, 3 },
  { "sort-by-state",      NULL, N_("Sort by _State"),      NULL, NULL, 4 },
  { "sort-by-tracker",    NULL, N_("Sort by _Tracker"),    NULL, NULL, 5 }
};

static void
sort_changed_cb( GtkAction            * action UNUSED,
                 GtkRadioAction       * current,
                 gpointer user_data     UNUSED )
{
    const char * key = PREF_KEY_SORT_MODE;
    const int i = gtk_radio_action_get_current_value( current );
    const char * val = sort_radio_entries[i].name;
    tr_core_set_pref( myCore, key, val );
}

static GtkToggleActionEntry show_toggle_entries[] = 
{
  { "toggle-main-window", NULL, 
    N_("_Main Window"), NULL, NULL, G_CALLBACK(action_cb), TRUE }, 
  { "toggle-message-log", NULL,
    N_("Message _Log"), NULL, NULL, G_CALLBACK(action_cb), FALSE }
};

static void
toggle_pref_cb ( GtkToggleAction * action, gpointer user_data UNUSED )
{
    const char * key = gtk_action_get_name( GTK_ACTION( action ) );
    const gboolean val = gtk_toggle_action_get_active( action );
    tr_core_set_pref_bool( myCore, key, val );
}

static GtkToggleActionEntry pref_toggle_entries[] =
{
  { "minimal-view", NULL,
    N_("_Minimal View"), "<alt>M", NULL, G_CALLBACK(toggle_pref_cb), FALSE },
  { "sort-reversed", NULL,
    N_("_Reverse Sort Order"), NULL, NULL, G_CALLBACK(toggle_pref_cb), FALSE },
  { "show-filter-bar", NULL,
    N_("_Filter Bar"), NULL, NULL, G_CALLBACK(toggle_pref_cb), FALSE },
  { "show-status-bar", NULL,
    N_("_Status Bar"), NULL, NULL, G_CALLBACK(toggle_pref_cb), FALSE },
  { "show-toolbar", NULL,
    N_("_Toolbar"), NULL, NULL, G_CALLBACK(toggle_pref_cb), FALSE }
};

static GtkActionEntry entries[] =
{
  { "torrent-menu", NULL, N_("_Torrent"), NULL, NULL, NULL },
  { "view-menu", NULL, N_("_View"), NULL, NULL, NULL },
  { "sort-menu", NULL, N_("_Sort Torrents By"), NULL, NULL, NULL },
  { "edit-menu", NULL, N_("_Edit"), NULL, NULL, NULL },
  { "help-menu", NULL, N_("_Help"), NULL, NULL, NULL },
  { "open-torrent-toolbar", GTK_STOCK_OPEN, NULL, NULL, N_("Open a torrent"), G_CALLBACK(action_cb) },
  { "open-torrent-menu", GTK_STOCK_OPEN, N_("_Open..."), NULL,
    N_("Open an existing torrent"), G_CALLBACK(action_cb) },
  { "start-torrent", GTK_STOCK_MEDIA_PLAY,
    N_("_Start"), "<control>S", NULL, G_CALLBACK(action_cb) },
  { "show-stats", NULL, N_("_Statistics"), NULL, NULL, G_CALLBACK(action_cb) },
  { "verify-torrent", NULL,
    N_("_Verify Local Data"), NULL, NULL, G_CALLBACK(action_cb) },
  { "pause-torrent", GTK_STOCK_MEDIA_PAUSE,
    N_("_Pause"), "<control>P", NULL, G_CALLBACK(action_cb) },
  { "close-torrent", GTK_STOCK_CLOSE, NULL, "Delete", NULL, G_CALLBACK(action_cb) },
  { "delete-torrent", GTK_STOCK_DELETE, N_("_Delete Files and Close"), "<control>Delete", NULL, G_CALLBACK(action_cb) },
  { "new-torrent", GTK_STOCK_NEW, N_("_New..."), NULL,
    N_("Create a new torrent"),
    G_CALLBACK(action_cb) },
  { "close", GTK_STOCK_CLOSE, N_("Close _Window"), "<control>W",
    N_("Close main window"),
    G_CALLBACK(action_cb) },
  { "quit", GTK_STOCK_QUIT, N_("_Quit"), NULL, NULL, G_CALLBACK(action_cb) },
  { "select-all", GTK_STOCK_SELECT_ALL, NULL, "<control>A", NULL, G_CALLBACK(action_cb) },
  { "unselect-all", NULL,
    N_("Dese_lect All"), "<shift><control>A", NULL, G_CALLBACK(action_cb) },
  { "edit-preferences", GTK_STOCK_PREFERENCES, NULL, NULL, NULL, G_CALLBACK(action_cb) },
  { "show-torrent-details", GTK_STOCK_INFO,
    N_("_Details"), "<alt>Return", N_("Torrent Details"), G_CALLBACK(action_cb) },
  { "show-about-dialog", GTK_STOCK_ABOUT, NULL, NULL, NULL, G_CALLBACK(action_cb) },
  { "update-tracker", GTK_STOCK_NETWORK,
    N_("Ask Tracker for _More Peers"), NULL, NULL, G_CALLBACK(action_cb) }
};

static void
ensure_tooltip (GtkActionEntry * e)
{
    if( !e->tooltip && e->label )
    {
        const char * src;
        char *tgt;
        e->tooltip = g_malloc( strlen( e->label ) + 1 );
        for( src=e->label, tgt=(char*)e->tooltip; *src; ++src )
            if( *src != '_' )
                *tgt++ = *src;
        *tgt++ = '\0';
    }
}

typedef struct
{
   const guint8* raw;
   const char * name;
}
BuiltinIconInfo;

const BuiltinIconInfo my_fallback_icons [] =
{
    { tr_icon_logo, "transmission" },
    { tr_icon_lock, "transmission-lock" }
};

static void
register_my_icons ( void )
{
    int i;
    const int n = G_N_ELEMENTS( my_fallback_icons );
    GtkIconFactory * factory = gtk_icon_factory_new( );
    GtkIconTheme * theme = gtk_icon_theme_get_default( );
    gtk_icon_factory_add_default( factory );

    for( i=0; i<n; ++i )
    {
        const char * name = my_fallback_icons[i].name;

        if( !gtk_icon_theme_has_icon( theme, name ) )
        {
            int width;
            GdkPixbuf * p;
            GtkIconSet * icon_set;

            p = gdk_pixbuf_new_from_inline( -1, my_fallback_icons[i].raw, FALSE, 0 );
            width = gdk_pixbuf_get_width( p );
            icon_set = gtk_icon_set_new_from_pixbuf( p );
            gtk_icon_theme_add_builtin_icon( name, width, p );
            gtk_icon_factory_add( factory, name, icon_set );

            g_object_unref( p );
            gtk_icon_set_unref( icon_set );
        }
    }

    g_object_unref (G_OBJECT (factory));
}

static GtkUIManager * myUIManager = NULL;

void
actions_set_core( TrCore * core )
{
    myCore = core;
}

void
actions_init( GtkUIManager * ui_manager, gpointer callback_user_data )
{
  int i, n;
  int active;
  char * match;
  const int n_entries = G_N_ELEMENTS( entries );
  GtkActionGroup * action_group;

  myUIManager = ui_manager;

  register_my_icons ();

  for( i=0; i<n_entries; ++i )
    ensure_tooltip (&entries[i]);

  action_group = myGroup = gtk_action_group_new( "Actions" );
  gtk_action_group_set_translation_domain( action_group, NULL );


  match = pref_string_get( PREF_KEY_SORT_MODE );
  for( i=0, n=G_N_ELEMENTS(sort_radio_entries), active=-1; active==-1 && i<n; ++i )
      if( !strcmp( sort_radio_entries[i].name, match ) )
          active = i;

  gtk_action_group_add_radio_actions( action_group,
                                      sort_radio_entries,
                                      G_N_ELEMENTS(sort_radio_entries),
                                      active,
                                      G_CALLBACK(sort_changed_cb),
                                      NULL );

  gtk_action_group_add_toggle_actions( action_group, 
                                       show_toggle_entries, 
                                       G_N_ELEMENTS(show_toggle_entries), 
                                       callback_user_data );

  for( i=0, n=G_N_ELEMENTS(pref_toggle_entries); i<n; ++i )
    pref_toggle_entries[i].is_active =
      pref_flag_get( pref_toggle_entries[i].name );

  gtk_action_group_add_toggle_actions( action_group, 
                                       pref_toggle_entries, 
                                       G_N_ELEMENTS(pref_toggle_entries), 
                                       callback_user_data );

  gtk_action_group_add_actions( action_group,
                                entries, n_entries,
                                callback_user_data );

  gtk_ui_manager_insert_action_group( ui_manager, action_group, 0 );
  g_object_unref (G_OBJECT(action_group));
  g_free( match );
}

/****
*****
****/

static GHashTable * key_to_action = NULL;

static void
ensure_action_map_loaded (GtkUIManager * uim)
{
    GList * l;

    if ( key_to_action != NULL )
        return;

    key_to_action =
        g_hash_table_new_full( g_str_hash, g_str_equal, g_free, NULL);

    for( l=gtk_ui_manager_get_action_groups(uim); l!=NULL; l=l->next )
    {
        GtkActionGroup * action_group = GTK_ACTION_GROUP( l->data );
        GList *ait, *actions = gtk_action_group_list_actions( action_group );
        for( ait=actions; ait!=NULL; ait=ait->next )
        {
            GtkAction * action = GTK_ACTION( ait->data );
            const char * name = gtk_action_get_name( action );
            g_hash_table_insert( key_to_action, g_strdup(name), action );
        }
        g_list_free( actions );
    }
}

static GtkAction*
get_action( const char* name )
{
    ensure_action_map_loaded( myUIManager );
    return ( GtkAction* ) g_hash_table_lookup( key_to_action, name );
}

void
action_activate ( const char * name )
{
    GtkAction * action = get_action( name );
    g_assert( action != NULL );
    gtk_action_activate( action );
}

void
action_sensitize( const char * name, gboolean b )
{
    GtkAction * action = get_action( name );
    g_assert( action != NULL );
    g_object_set( action, "sensitive", b, NULL );
}

void
action_toggle( const char * name, gboolean b )
{
    GtkAction * action = get_action( name );
    gtk_toggle_action_set_active( GTK_TOGGLE_ACTION(action), b );
}

GtkWidget*
action_get_widget( const char * path )
{
    return gtk_ui_manager_get_widget( myUIManager, path );
}