#include <stdlib.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <vlc/vlc.h>

#define BORDER_WIDTH 6

void destroy(GtkWidget *widget, gpointer data);
void player_widget_on_realize(GtkWidget *widget, gpointer data);
void on_open(GtkWidget *widget, gpointer data);
void open_media(const char* uri);
void play(void);
void pause_player(void);
void on_playpause(GtkWidget *widget, gpointer data);
void on_stop(GtkWidget *widget, gpointer data);

libvlc_media_player_t *media_player;
libvlc_instance_t *vlc_inst;
GtkWidget *playpause_button;

void destroy(GtkWidget *widget, gpointer data) {
gtk_main_quit();
}

void player_widget_on_realize(GtkWidget *widget, gpointer data) {
libvlc_media_player_set_xwindow(media_player, GDK_WINDOW_XID(gtk_widget_get_window(widget)));
}

void on_open(GtkWidget *widget, gpointer data) {
GtkWidget *dialog;
dialog = gtk_file_chooser_dialog_new("Choose Media", data, GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL,GTK_RESPONSE_CANCEL, GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, NULL);
if(gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {
char *uri;
uri = gtk_file_chooser_get_uri(GTK_FILE_CHOOSER(dialog));
open_media(uri);
g_free(uri);
}
gtk_widget_destroy(dialog);
}

void open_media(const char* uri) {
libvlc_media_t *media;
media = libvlc_media_new_location(vlc_inst, uri);
libvlc_media_player_set_media(media_player, media);
play();
libvlc_media_release(media);
}

void on_playpause(GtkWidget *widget, gpointer data) {
if(libvlc_media_player_is_playing(media_player) == 1) {
pause_player();
}
else {
play();
}
}

void on_stop(GtkWidget *widget, gpointer data) {
pause_player();
libvlc_media_player_stop(media_player);
}

void play(void) {
libvlc_media_player_play(media_player);
gtk_button_set_label(GTK_BUTTON(playpause_button), "gtk-media-pause");
}

void pause_player(void) {
libvlc_media_player_pause(media_player);
gtk_button_set_label(GTK_BUTTON(playpause_button), "gtk-media-play");
}

int main( int argc, char *argv[] ) {
GtkWidget *window,
*vbox,
*menubar,
*filemenu,
*fileitem,
*filemenu_openitem,
*player_widget,
*hbuttonbox,
*stop_button;

gtk_init (&argc, &argv);
// setup window
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
g_signal_connect(window, "destroy", G_CALLBACK(destroy), NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 0);
gtk_window_set_title(GTK_WINDOW(window), "GTK+ libVLC Demo");

//setup vbox
vbox = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(window), vbox);

//setup menu
menubar = gtk_menu_bar_new();
filemenu = gtk_menu_new();
fileitem = gtk_menu_item_new_with_label ("File");
filemenu_openitem = gtk_menu_item_new_with_label("Open");
gtk_menu_shell_append(GTK_MENU_SHELL(filemenu), filemenu_openitem);
gtk_menu_item_set_submenu(GTK_MENU_ITEM(fileitem), filemenu);
gtk_menu_shell_append(GTK_MENU_BAR(menubar), fileitem);
gtk_box_pack_start(GTK_BOX(vbox), menubar, FALSE, FALSE, 0);
g_signal_connect(filemenu_openitem, "activate", G_CALLBACK(on_open), window);

//setup player widget
player_widget = gtk_drawing_area_new();
gtk_box_pack_start(GTK_BOX(vbox), player_widget, TRUE, TRUE, 0);

//setup controls
//playpause_button = gtk_button_new_from_stock(GTK_STOCK_MEDIA_PLAY);
playpause_button = gtk_button_new_with_label("gtk-media-play");
gtk_button_set_use_stock(GTK_BUTTON(playpause_button), TRUE);
stop_button = gtk_button_new_from_stock(GTK_STOCK_MEDIA_STOP);
g_signal_connect(playpause_button, "clicked", G_CALLBACK(on_playpause), NULL);
g_signal_connect(stop_button, "clicked", G_CALLBACK(on_stop), NULL);
hbuttonbox = gtk_hbutton_box_new();
gtk_container_set_border_width(GTK_CONTAINER(hbuttonbox), BORDER_WIDTH);
gtk_button_box_set_layout(GTK_BUTTON_BOX(hbuttonbox), GTK_BUTTONBOX_START);
gtk_box_pack_start(GTK_BOX(hbuttonbox), playpause_button, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(hbuttonbox), stop_button, FALSE, FALSE, 0);
gtk_box_pack_start(GTK_BOX(vbox), hbuttonbox, FALSE, FALSE, 0);

//setup vlc
char const *vlc_argv[] = { // "--no-audio", // Don't play audio.
"--no-xlib" // Don't use Xlib. // Apply a video filter. //"--video-filter", "sepia", //"--sepia-intensity=200"
};
int vlc_argc = sizeof(vlc_argv) / sizeof(*vlc_argv);
vlc_inst = libvlc_new(vlc_argc, vlc_argv);
media_player = libvlc_media_player_new(vlc_inst);
g_signal_connect(G_OBJECT(player_widget), "realize", G_CALLBACK(player_widget_on_realize), NULL);

gtk_widget_show_all(window);
gtk_main ();