#include <stdint.h>
#include <string.h>
#include <gtk/gtk.h>

#include "generated.h"
#include "shared.h"
#include "rcm-client-main.h"
#include "rcm-client-advanced.h"

struct state {
	GList *header_buttons;
};
	
static struct state state;

static GVariant *
encode_nec(uint32_t scancode_raw)
{
	GVariantBuilder *builder;
	GVariant *r;
	unsigned i;
	uint32_t scancode;

	scancode = ((((scancode_raw >> 24) & 0xff) <<  0) |
		    (((scancode_raw >> 16) & 0xff) <<  8) |
		    (((scancode_raw >>  8) & 0xff) << 16) |
		    (((scancode_raw >>  0) & 0xff) << 24));

	builder = g_variant_builder_new(G_VARIANT_TYPE_ARRAY);
	g_variant_builder_add(builder, "u", 9000);
	g_variant_builder_add(builder, "u", 4500);

	for (i = 0; i < 32; i++) {
		g_variant_builder_add(builder, "u", 560);
		if (scancode & 0x1)
			g_variant_builder_add(builder, "u", 3 * 560);
		else
			g_variant_builder_add(builder, "u", 1 * 560);
		scancode >>= 1;
	}

	g_variant_builder_add(builder, "u", 560);

	r = g_variant_builder_end(builder);
	g_variant_builder_unref(builder);
	return r;
}

static void
advanced_transmit_cb(GtkButton *button, gpointer user_data)
{
	RCDevice *object = user_data;
	GtkComboBoxText *protocolw;
	GtkEntry *scancodew;
	gchar *protocol;
	const gchar *scancode;
	uint64_t sc;
	GError *error = NULL;
	gboolean r;

	protocolw = GTK_COMBO_BOX_TEXT(gtk_builder_get_object(global->builder, "advanced_transmit_protocol"));
	scancodew = GTK_ENTRY(gtk_builder_get_object(global->builder, "advanced_transmit_scancode"));

	protocol = gtk_combo_box_text_get_active_text(protocolw);
	scancode = gtk_entry_get_text(scancodew);
	printf("Asked to transmit: protocol %s scancode %s\n", protocol, scancode);
	g_free(protocol);

	if (!strcmp(protocol, "NEC")) {
		printf("Invalid protocol: %s\n", protocol);
		return;
	}

	r = strtoull_strict(scancode, &sc);
	if (r < 0 || sc > UINT32_MAX) {
		printf("Invalid scancode: %s\n", scancode);
		return;
	}

	if (!rcdevice_call_transmit_sync(object, encode_nec(sc), NULL, &error)) {
		printf("rcdevice_call_transmit_sync failed: %s\n",
		       error ? error->message : "no error reported");
		g_error_free(error);
	}
}

static void
local_create_header_button(const gchar *tooltip,
			   const gchar *icon_name, gboolean end,
			   GCallback callback, gpointer user_data)
{
	GtkHeaderBar *header = GTK_HEADER_BAR(gtk_builder_get_object(global->builder, "advanced_headerbar"));
	GtkWidget *button;

	button = create_header_button(header, tooltip, icon_name, end, callback, user_data);
	state.header_buttons = g_list_prepend(state.header_buttons, button);
}

static void
remove_header_buttons(void)
{
	GList *l;

	for (l = state.header_buttons; l; l = l->next)
		gtk_widget_destroy(l->data);

	g_list_free(state.header_buttons);
	state.header_buttons = NULL;
}

static void
advanced_show_main_cb(GtkButton *button, gpointer user_data)
{
	GtkStack *stack;

	remove_header_buttons();
	stack = GTK_STACK(gtk_builder_get_object(global->builder, "advanced_stack"));
	gtk_stack_set_visible_child_name(stack, "advanced_main_page");
}

static void
advanced_show_transmit_cb(GtkButton *button, gpointer user_data)
{
	RCDevice *object = user_data;
	GtkStack *stack;
	GtkWidget *transmit_button;

	stack = GTK_STACK(gtk_builder_get_object(global->builder, "advanced_stack"));
	gtk_stack_set_visible_child_name(stack, "advanced_transmit_page");
	transmit_button = GTK_WIDGET(gtk_builder_get_object(global->builder, "advanced_transmit_button"));
	g_signal_connect(transmit_button, "clicked", G_CALLBACK(advanced_transmit_cb), object);
	local_create_header_button("Return to advanced menu", "go-previous-symbolic", false, G_CALLBACK(advanced_show_main_cb), NULL);
}

void
advanced_init_ui(RCDevice *object)
{
	GtkWidget *dialog;
	GtkWidget *title;
	GtkWidget *transmit;
	gchar *titlestr;

	dialog = GTK_WIDGET(gtk_builder_get_object(global->builder, "advanced"));

	title = GTK_WIDGET(gtk_builder_get_object(global->builder, "advanced_main_title_label"));
	titlestr = g_markup_printf_escaped("<b><big>Advanced Actions</big></b>\nFor device %s",
					   rcdevice_get_sys_name(object));
	gtk_label_set_markup(GTK_LABEL(title), titlestr);
	g_free(titlestr);

	transmit = GTK_WIDGET(gtk_builder_get_object(global->builder, "advanced_main_transmit"));
	g_signal_connect(transmit, "clicked", G_CALLBACK(advanced_show_transmit_cb), object);

	g_signal_connect_swapped(dialog, "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), dialog);
	gtk_widget_show(dialog);
}