/*
 * GDSII converter
 * Copyright (C) 2018  Mario Hüttel <mario.huettel@gmx.net>
 *
 * This file is part of GDSII-Converter.
 *
 * GDSII-Converter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License.
 *
 * GDSII-converter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include "gdsparse.h"
#include <gtk/gtk.h>

enum cell_store_columns {
	LIBRARY,
	CELL,
	STORE_COLUMN
};


struct open_button_data {
		GtkWindow *main_window;
		GList **list_ptr;
		GtkTreeStore *cell_store;
};




gboolean on_window_close(gpointer window, gpointer user)
{
	gtk_widget_destroy(GTK_WIDGET(window));
	gtk_main_quit();
	return TRUE;
}



void on_load_gds(gpointer button, gpointer user)
{
	GList *cell;
	GtkTreeIter libiter;
	GtkTreeIter celliter;
	GList *lib;
	struct gds_library *gds_lib;
	struct gds_cell *gds_c;
	struct open_button_data *ptr = (struct open_button_data *)user;
	GtkTreeStore *store = ptr->cell_store;
	GtkWidget *open_dialog;
	GtkFileChooser *file_chooser;
	GtkFileFilter *filter;
	GtkStyleContext *button_style;
	gint dialog_result;
	int gds_result;
	char *filename;

	open_dialog = gtk_file_chooser_dialog_new("Open GDSII File", ptr->main_window, GTK_FILE_CHOOSER_ACTION_OPEN,
						  "Cancel", GTK_RESPONSE_CANCEL, "Open GDSII", GTK_RESPONSE_ACCEPT, NULL);
	file_chooser = GTK_FILE_CHOOSER(open_dialog);
	/* Add GDS II Filter */
	filter = gtk_file_filter_new();
	gtk_file_filter_add_pattern(filter, "*.gds");
	gtk_file_filter_set_name(filter, "GDSII-Files");
	gtk_file_chooser_add_filter(file_chooser, filter);

	dialog_result = gtk_dialog_run(GTK_DIALOG(open_dialog));

	if (dialog_result == GTK_RESPONSE_ACCEPT) {

		/* Get File name */
		filename = gtk_file_chooser_get_filename(file_chooser);

		/* Clear Display */
		gtk_tree_store_clear(store);
		/* Delete parsed GDS data */
		clear_lib_list(ptr->list_ptr);

		/* Parse new GDSII file */
		gds_result = parse_gds_from_file(filename, ptr->list_ptr);

		/* Delete file name afterwards */
		g_free(filename);
		if (gds_result)
			goto end_destroy;

		/* remove suggested action from Open button */
		button_style = gtk_widget_get_style_context(GTK_WIDGET(button));
		gtk_style_context_remove_class(button_style, "suggested-action");

		for (lib = *(ptr->list_ptr); lib != NULL; lib = lib->next) {
			gds_lib = (struct gds_library *)lib->data;
			/* Create top level iter */
			gtk_tree_store_append (store, &libiter, NULL);
			gtk_tree_store_set (store, &libiter, LIBRARY, gds_lib->name, -1);
			for (cell = gds_lib->cells; cell != NULL; cell = cell->next) {
				gds_c = (struct gds_cell *)cell->data;
				gtk_tree_store_append (store, &celliter, &libiter);
				gtk_tree_store_set (store, &celliter, CELL, gds_c->name, -1);
			}
		}
	}

end_destroy:
	gtk_widget_destroy(open_dialog);
}

void on_convert_clicked(gpointer button, gpointer user)
{
	printf("convert\n");
}

static GtkTreeStore * setup_cell_selector(GtkTreeView* view)
{
	GtkTreeStore *cell_store;

	GtkCellRenderer *render;
	GtkTreeViewColumn *column;

	cell_store = gtk_tree_store_new(STORE_COLUMN, G_TYPE_STRING, G_TYPE_STRING);
	gtk_tree_view_set_model(view, GTK_TREE_MODEL(cell_store));

	render = gtk_cell_renderer_text_new();
	column = gtk_tree_view_column_new_with_attributes("Library", render, "text", LIBRARY, NULL);
	gtk_tree_view_append_column(view, column);

	column = gtk_tree_view_column_new_with_attributes("Cell", render, "text", CELL, NULL);
	gtk_tree_view_append_column(view, column);

	return cell_store;
}

int main(int argc, char **argv)
{
	GtkBuilder *main_builder;
	GList *gds_libs = NULL;
	GtkTreeView *cell_tree;
	GtkTreeStore *cell_store;
	struct open_button_data open_data;

	gtk_init(&argc, &argv);

	main_builder = gtk_builder_new_from_file("glade/main.glade");
	gtk_builder_connect_signals(main_builder, NULL);



	cell_tree = (GtkTreeView *)gtk_builder_get_object(main_builder, "cell-tree");
	cell_store = setup_cell_selector(cell_tree);


	open_data.cell_store = cell_store;
	open_data.list_ptr = &gds_libs;
	open_data.main_window = GTK_WINDOW(gtk_builder_get_object(main_builder, "main-window"));
	g_signal_connect(GTK_WIDGET(gtk_builder_get_object(main_builder, "button-load-gds")),
			 "clicked", G_CALLBACK(on_load_gds), (gpointer)&open_data);


	gtk_main();

	return 0;
}