#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <math.h>
#include <gtk/gtk.h>

#include "generated.h"
#include "rcm-client-main.h"
#include "rcm-client-hardware-list.h"
#include "rcm-client-hardware-info.h"

static GtkWidget *status_msg;
static GtkWidget *hw_list_box;
static GtkWidget *stack;
static GList *hw_list = NULL;

struct hwentry {
	GDBusObject *hw;
	GtkWidget *widget;
};

static gint
find_hwentry_by_object(gconstpointer a, gconstpointer user_data)
{
	const struct hwentry *hwe = a;

	return hwe->hw == user_data ? 0 : -1;
}

static gint
find_hwentry_by_widget(gconstpointer a, gconstpointer user_data)
{
	const struct hwentry *hwe = a;

	return hwe->widget == user_data ? 0 : -1;
}

void rcng_client_hardware_list_remove(GDBusObject *hw)
{
	GList *entry;
	struct hwentry *hwe;

	entry = g_list_find_custom(hw_list, hw, find_hwentry_by_object);
	if (!entry)
		return;

	hwe = entry->data;
	hw_list = g_list_remove_all(hw_list, hwe);

	g_print(" - Object removed %s\n", g_dbus_object_get_object_path(hwe->hw));
	gtk_widget_destroy(hwe->widget);
	g_free(hwe);

	if (!hw_list)
		gtk_stack_set_visible_child(GTK_STACK(stack), status_msg);
}

void rcng_client_hardware_list_add(GDBusObject *hw)
{
	GList *interfaces;
	GList *ll;
	GtkWidget *box;
	GtkWidget *icon;
	GtkWidget *label;
	struct hwentry *hwe;

	g_print(" - Object at %s\n", g_dbus_object_get_object_path(hw));

	interfaces = g_dbus_object_get_interfaces(hw);
	for (ll = interfaces; ll != NULL; ll = ll->next) {
		GDBusInterface *interface = G_DBUS_INTERFACE(ll->data);
		g_print ("   - Interface %s\n", g_dbus_interface_get_info(interface)->name);
	}
	g_list_free_full (interfaces, g_object_unref);

	if (!hw_list)
		gtk_stack_set_visible_child(GTK_STACK(stack), hw_list_box);

	box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
	icon = gtk_image_new_from_icon_name("gtk-harddisk", GTK_ICON_SIZE_DIALOG);
	gtk_widget_set_valign(icon, GTK_ALIGN_START);
	gtk_widget_set_halign(icon, GTK_ALIGN_START);
	gtk_widget_set_margin_start(icon, 12);
	gtk_widget_set_margin_end(icon, 12);
	label = gtk_label_new(g_dbus_object_get_object_path(hw));
	gtk_box_pack_start(GTK_BOX(box), icon, FALSE, FALSE, 0);
	gtk_box_pack_start(GTK_BOX(box), label, FALSE, FALSE, 0);
	gtk_widget_show_all(box);

	gtk_list_box_insert(GTK_LIST_BOX(hw_list_box), box, -1);

	hwe = g_malloc(sizeof(*hwe));
	hwe->hw = hw;
	hwe->widget = box;
	hw_list = g_list_append(hw_list, hwe);
}

static void
on_hw_selected(GtkListBox *box,
	       GtkListBoxRow *row,
	       gpointer user_data)
{
	GList *entry;
	GtkWidget *child;
	struct hwentry *hwe;
      
	child = row ? gtk_bin_get_child(GTK_BIN(row)) : NULL;
	entry = g_list_find_custom(hw_list, child, find_hwentry_by_widget);
	hwe = entry ? entry->data : NULL;

	rcng_client_hardware_init_info_ui(hwe ? hwe->hw : NULL);
}

void rcng_client_hardware_list_update_status(gchar *status)
{
	gtk_label_set_text(GTK_LABEL(status_msg), status);
}

void rcng_client_hardware_list_init_ui()
{
	stack = gtk_stack_new();
	gtk_widget_set_margin_start(stack, 12);
	gtk_widget_set_margin_end(stack, 12);
	gtk_widget_set_margin_top(stack, 12);
	gtk_widget_set_margin_bottom(stack, 12);
	gtk_stack_set_transition_type(GTK_STACK(stack), GTK_STACK_TRANSITION_TYPE_CROSSFADE);

	status_msg = gtk_label_new("Connecting to server...");
	gtk_stack_add_named(GTK_STACK(stack), status_msg, "nohw");
	gtk_stack_set_visible_child(GTK_STACK(stack), status_msg);

	hw_list_box = gtk_list_box_new();
	gtk_stack_add_named(GTK_STACK(stack), hw_list_box, "yeshw");
	g_signal_connect(hw_list_box, "row-selected", G_CALLBACK(on_hw_selected), NULL);

	gtk_notebook_append_page(global->notebook, stack, gtk_label_new("Hardware"));
}