#include <stdint.h>
#include <string.h>
#include <gtk/gtk.h>
#include <inttypes.h>
#include <stdint.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;
}

void
advanced_receive_event(const gchar *event)
{
	GtkTextView *textview = GTK_TEXT_VIEW(get_object("advanced_receive_textview"));
	GtkTextBuffer *buffer = gtk_text_view_get_buffer(textview);
	GtkTextIter iter;

	gtk_text_buffer_get_end_iter(buffer, &iter);
	gtk_text_buffer_insert(buffer, &iter, event, -1);
}

static void
advanced_receive_clear_cb(GtkButton *button, gpointer user_data)
{
	GtkTextView *textview = GTK_TEXT_VIEW(get_object("advanced_receive_textview"));
	GtkTextBuffer *buffer = gtk_text_view_get_buffer(textview);
	GtkTextIter si, ei;

	gtk_text_buffer_get_start_iter(buffer, &si);
	gtk_text_buffer_get_end_iter(buffer, &ei);

	gtk_text_buffer_delete(buffer, &si, &ei);
}

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(get_object("advanced_transmit_protocol"));
	scancodew = GTK_ENTRY(get_object("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("Unsupported 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(get_object("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(get_object("advanced_stack"));
	gtk_stack_set_visible_child_name(stack, "advanced_main_page");
}

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

	stack = GTK_STACK(get_object("advanced_stack"));
	gtk_stack_set_visible_child_name(stack, "advanced_receive_page");
	g_signal_replace_id("advanced_receive_clear", "clicked", G_CALLBACK(advanced_receive_clear_cb), object);
	local_create_header_button("Return to advanced menu", "go-previous-symbolic", false, G_CALLBACK(advanced_show_main_cb), NULL);
}

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

	stack = GTK_STACK(get_object("advanced_stack"));
	gtk_stack_set_visible_child_name(stack, "advanced_transmit_page");
	g_signal_replace_id("advanced_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);
}

static void advanced_show_keymap_cb(GtkButton *button, gpointer user_data);

static void
advanced_keymap_remove_cb(GtkButton *button, gpointer user_data)
{
	RCDevice *object = user_data;
	GtkTreeSelection *selection;
	GtkTreeModel *model;
	GtkTreeIter iter;
	gchar *protocol;
	guint64 scancode;
	gchar *keycode;
	GVariantBuilder builder;

	selection = GTK_TREE_SELECTION(get_object("advanced_keymap_treeselection"));
	if (!gtk_tree_selection_get_selected(selection, &model, &iter))
		return;

	gtk_tree_model_get(model, &iter, 0, &protocol, 1, &scancode, 2, &keycode, -1);
	printf("Row to be deleted: %s:%lux:%s\n", protocol, scancode, keycode);

	g_variant_builder_init(&builder, G_VARIANT_TYPE("aa{sv}"));
	g_variant_builder_open(&builder, G_VARIANT_TYPE ("a{sv}"));
	g_variant_builder_add(&builder, "{sv}", "protocol",
			      g_variant_new_string(protocol));
	g_variant_builder_add(&builder, "{sv}", "scancode",
			      g_variant_new_uint64(scancode));
	g_variant_builder_add(&builder, "{sv}", "keycode",
			      g_variant_new_string("KEY_RESERVED"));
	g_variant_builder_close(&builder);

	if (!rcdevice_call_set_kernel_mappings_sync(object,
						    g_variant_builder_end(&builder),
						    NULL, NULL))
		return;

	advanced_show_keymap_cb(NULL, object);
}

static void
advanced_keymap_row_selected_cb(GtkTreeSelection *selection, gpointer user_data)
{
	GtkTreeModel *model;
	GtkTreeIter iter;
	GtkWidget *remove;

	remove = GTK_WIDGET(get_object("advanced_keymap_remove"));
	if (gtk_tree_selection_get_selected(selection, &model, &iter)) {
		g_signal_replace(remove, "clicked", G_CALLBACK(advanced_keymap_remove_cb), user_data);
		gtk_widget_set_sensitive(remove, true);
	} else
		gtk_widget_set_sensitive(remove, false);
}

static void
advanced_keymap_add_cb(GtkButton *button, gpointer user_data)
{
	RCDevice *object = user_data;
	GtkWidget *dialog;
	gchar *protocol;
	const char *scanstr;
	guint64 scancode;
	gchar *keycode;
	GVariantBuilder builder;
	int r;

	dialog = GTK_WIDGET(get_object("advanced_add"));
	gtk_widget_show_all(dialog);
	r = gtk_dialog_run(GTK_DIALOG(dialog));
	gtk_widget_hide(dialog);

	if (r != 1)
		return;

	scanstr = gtk_entry_get_text(GTK_ENTRY(get_object("advanced_add_scancode")));
	r = strtoull_strict(scanstr, &scancode);
	if (r < 0)
		return;

	protocol = gtk_combo_box_text_get_active_text(GTK_COMBO_BOX_TEXT(get_object("advanced_add_protocol")));
	keycode = gtk_combo_box_text_get_active_text(GTK_COMBO_BOX_TEXT(get_object("advanced_add_keycode")));

	g_variant_builder_init(&builder, G_VARIANT_TYPE("aa{sv}"));
	g_variant_builder_open(&builder, G_VARIANT_TYPE ("a{sv}"));
	g_variant_builder_add(&builder, "{sv}", "protocol",
			      g_variant_new_string(protocol));
	g_variant_builder_add(&builder, "{sv}", "scancode",
			      g_variant_new_uint64(scancode));
	g_variant_builder_add(&builder, "{sv}", "keycode",
			      g_variant_new_string(keycode));
	g_variant_builder_close(&builder);

	g_free(protocol);
	g_free(keycode);

	if (!rcdevice_call_set_kernel_mappings_sync(object,
						    g_variant_builder_end(&builder),
						    NULL, NULL))
		return;

	advanced_show_keymap_cb(NULL, object);
}

static void
advanced_show_keymap_cb(GtkButton *button, gpointer user_data)
{
	RCDevice *object = user_data;
	GtkListStore *store;
	GVariant *keymap_entries = NULL;
	GtkStack *stack;

	g_signal_replace_id("advanced_keymap_treeselection", "changed", G_CALLBACK(advanced_keymap_row_selected_cb), object);
	g_signal_replace_id("advanced_keymap_add", "clicked", G_CALLBACK(advanced_keymap_add_cb), object);
	g_signal_replace_id("advanced_keymap_refresh", "clicked", G_CALLBACK(advanced_show_keymap_cb), object);
	store = GTK_LIST_STORE(get_object("advanced_keymap_liststore"));
	gtk_list_store_clear(store);

	rcdevice_call_get_kernel_mappings_sync(object, &keymap_entries, NULL, NULL);

	g_assert(g_variant_is_of_type(keymap_entries, G_VARIANT_TYPE("aa{sv}")));

	GVariantIter iter;
	gsize n_items;
	GVariant *item;
 
	n_items = g_variant_iter_init(&iter, keymap_entries);
	g_print("Keymap items: %zu\n", n_items);
	while (g_variant_iter_loop (&iter, "@a{sv}", &item)) {
		gchar *protocol;
		guint64 scancode;
		gchar *keycode;
		GtkTreeIter iter;

		g_variant_lookup(item, "protocol", "s", &protocol);
		g_variant_lookup(item, "scancode", "t", &scancode);
		g_variant_lookup(item, "keycode", "s", &keycode);

		gtk_list_store_append(store, &iter);
		gtk_list_store_set(store, &iter, 0, protocol, 1, scancode,  2, keycode, -1);
	}
	g_variant_unref(keymap_entries);
	
	stack = GTK_STACK(get_object("advanced_stack"));
	gtk_stack_set_visible_child_name(stack, "advanced_keymap_page");
	remove_header_buttons();
	local_create_header_button("Return to advanced menu", "go-previous-symbolic", false, G_CALLBACK(advanced_show_main_cb), NULL);
}

static void
render_cell_as_hexadecimal(GtkTreeViewColumn *tree_column, GtkCellRenderer *cell,
			   GtkTreeModel *tree_model, GtkTreeIter *iter,
			   gpointer user_data)
{
	guint64 val;
	gchar *text;

	gtk_tree_model_get(tree_model, iter, 1, &val, -1);
	if (val > UINT32_MAX)
		text = g_strdup_printf("0x%016" PRIX64, val);
	else
		text = g_strdup_printf("0x%08" PRIX64, val);
	g_object_set(cell, "text", text, NULL);
	g_free (text);
}

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

	title = GTK_WIDGET(get_object("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);

	g_signal_replace_id("advanced_main_transmit", "clicked", G_CALLBACK(advanced_show_transmit_cb), object);
	g_signal_replace_id("advanced_main_receive", "clicked", G_CALLBACK(advanced_show_receive_cb), object);
	g_signal_replace_id("advanced_main_keymap", "clicked", G_CALLBACK(advanced_show_keymap_cb), object);

	gtk_tree_view_column_set_cell_data_func(GTK_TREE_VIEW_COLUMN(get_object("advanced_keymap_treecol_scancode")),
						GTK_CELL_RENDERER(get_object("advanced_keymap_treecell_scancode")),
						render_cell_as_hexadecimal,
						NULL, NULL);

	cbox_add_all_protocols(GTK_COMBO_BOX_TEXT(get_object("advanced_transmit_protocol")));
	cbox_add_all_protocols(GTK_COMBO_BOX_TEXT(get_object("advanced_add_protocol")));
	cbox_add_all_keycodes(GTK_COMBO_BOX_TEXT(get_object("advanced_add_keycode")));

	dialog = GTK_WIDGET(get_object("advanced"));
	g_signal_replace_swapped(dialog, "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), dialog);
	advanced_show_main_cb(NULL, NULL);
	gtk_widget_show(dialog);
}