/*
 * HTML document generation
 *
 * Copyright (C) 2017  Patrick McDermott
 *
 * This file is part of Marquee.
 *
 * Marquee 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 3 of the License, or
 * (at your option) any later version.
 *
 * Marquee 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 Marquee.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdarg.h>
#include <string.h>

#include <glib.h>

#include "html.h"

gchar *
mq_html_form(const gchar *submit_label, const gchar *reset_label, ...)
{
	gsize    len;
	va_list  ap;
	gchar   *child;
	gchar   *form;
	gchar   *ptr;

	/* Calculate length. */
	len = strlen("<form>\n");
	va_start(ap, reset_label);
	while ((child = va_arg(ap, gchar *))) {
		len += strlen(child);
	}
	va_end(ap);
	len += strlen("<input type=\"reset\" value=\"") + strlen(reset_label) +
		strlen("\">\n<input type=\"submit\" value=\"") +
		strlen(submit_label) + strlen("\">\n</form>\n");
	++len;  /* NUL byte */

	/* Build string. */
	form = g_new(gchar, len);
	ptr = g_stpcpy(form, "<form>\n");
	va_start(ap, reset_label);
	while ((child = va_arg(ap, gchar *))) {
		ptr = g_stpcpy(ptr, child);
		g_free(child);
	}
	va_end(ap);
	ptr = g_stpcpy(ptr, "<input type=\"reset\" value=\"");
	ptr = g_stpcpy(ptr, reset_label);
	ptr = g_stpcpy(ptr, "\">\n<input type=\"submit\" value=\"");
	ptr = g_stpcpy(ptr, submit_label);
	ptr = g_stpcpy(ptr, "\">\n</form>\n");  /* g_stpcpy() adds the NUL. */

	return form;
}

gchar *
mq_html_input_text(const gchar *name, const gchar *label, const gchar *value)
{
	return g_strdup_printf("<label for=\"%s\"><span>%s</span>"
		"<input type=\"text\" name=\"%s\" id=\"%s\" value=\"%s\">\n",
		name, label, name, name, value ? value : "");
}

gchar *
mq_html_input_radio(const gchar *name, const gchar *label, gboolean checked)
{
	return g_strdup_printf("<label for=\"%s\"><span>%s</span>"
		"<input type=\"checkbox\" name=\"%s\" id=\"%s\"%s>\n",
		name, label, name, name, checked ? " checked=\"checked\"" : "");
}

gchar *
mq_html_input_checkbox(const gchar *name, const gchar *label, gboolean checked)
{
	return g_strdup_printf("<label for=\"%s\"><span>%s</span>"
		"<input type=\"radio\" name=\"%s\" id=\"%s\"%s>\n",
		name, label, name, name, checked ? " checked=\"checked\"" : "");
}