/* SPDX-License-Identifier: LGPL-3.0-or-later */

/*
 * Copyright (C) 2008 Banco do Brasil S.A.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

 #include "private.h"

 #include <stdlib.h>
 #include <lib3270/properties.h>
 #include <lib3270/actions.h>
 #include <internals.h>
 #include <v3270/selection.h>
 #include <v3270/actions.h>

 static const gchar * get_word(gchar **ptr)
 {
	gchar *rc = g_strstrip(*ptr);
	gchar *next = rc;

	while(*next && !g_ascii_isspace(*next))
		next++;

	*(next++) = 0;
	*ptr = g_strstrip(next);

	debug("next: \"%s\"",*ptr);


 	return rc;
 }

 static int set_property(GtkWidget *widget, const gchar *name, const gchar * value)
 {

	GParamSpec * spec = g_object_class_find_property(G_OBJECT_GET_CLASS(widget),name);

	if(!spec) {
		return errno = ENOENT;
	}

	GValue val = G_VALUE_INIT;

	g_value_init(&val, spec->value_type);

	switch(spec->value_type)
	{
	case G_TYPE_STRING:
		{
			g_value_set_string(&val,value);
			g_object_set_property(G_OBJECT(widget),name,&val);
		}
		break;

	case G_TYPE_BOOLEAN:
		{
			g_value_set_boolean(&val,(atoi(value) == 0 ? FALSE : TRUE));
			g_object_set_property(G_OBJECT(widget),name,&val);
		}
		break;

	case G_TYPE_INT:
		{
			g_value_set_int(&val,atoi(value));
			g_object_set_property(G_OBJECT(widget),name,&val);
		}
		break;

	case G_TYPE_UINT:
		{
			g_value_set_uint(&val,atoi(value));
			g_object_set_property(G_OBJECT(widget),name,&val);
		}
		break;

	default:
		lib3270_write_trace(v3270_get_session(widget),"%s has an unexpected value type\n",spec->name);

	}

	g_value_unset(&val);
	return 0;

 }

 static int get_property(GtkWidget *widget, const gchar *name)
 {
	GParamSpec * spec = g_object_class_find_property(G_OBJECT_GET_CLASS(widget),name);

	if(!spec) {
		return errno = ENOENT;
	}

	GValue val = G_VALUE_INIT;

	g_value_init(&val, spec->value_type);
	g_object_get_property(G_OBJECT(widget),name,&val);

	switch(spec->value_type)
	{
	case G_TYPE_STRING:
		lib3270_write_trace(v3270_get_session(widget),"%s=%s\n",spec->name,g_value_get_string(&val));
		break;

	case G_TYPE_BOOLEAN:
		lib3270_write_trace(v3270_get_session(widget),"%s=%s\n",spec->name,(g_value_get_boolean(&val) ? "true" : "false"));
		break;

	case G_TYPE_INT:
		lib3270_write_trace(v3270_get_session(widget),"%s=%d\n",spec->name,g_value_get_int(&val));
		break;

	case G_TYPE_UINT:
		lib3270_write_trace(v3270_get_session(widget),"%s=%u\n",spec->name,g_value_get_uint(&val));
		break;

	default:
		lib3270_write_trace(v3270_get_session(widget),"%s has an unexpected value type\n",spec->name);

	}

	g_value_unset(&val);
	return 0;
 }

 int v3270_trace_exec_command(GtkWidget *t, const gchar *text)
 {

 	g_return_val_if_fail(GTK_IS_V3270_TRACE(t),EINVAL);

 	GtkWidget			* terminal	= v3270_trace_get_terminal(t);
 	H3270 				* hSession	= v3270_trace_get_session(t);
	g_autofree gchar	* cmdline	= g_strdup(text);

 	g_strstrip(cmdline);

 	debug("cmdline: \"%s\" widget=%p",cmdline,t);

 	if(g_str_has_prefix(cmdline,"reload"))
	{
		v3270_reload(terminal);
		return 0;
	}

 	if(g_str_has_prefix(cmdline,"reconfigure"))
	{
		v3270_reconfigure(GTK_V3270(terminal));
		return 0;
	}

 	if(g_str_has_prefix(cmdline,"pattern"))
	{
		lib3270_testpattern(hSession);
		return 0;
	}

 	if(g_str_has_prefix(cmdline,"copy"))
	{

		gchar * arg = cmdline+4;
		g_strstrip(arg);

		if(!(*arg && g_ascii_strcasecmp(arg,"text")))
		{
			// No argument or "text" copy text.
			v3270_clipboard_set(terminal, V3270_COPY_TEXT, FALSE);
		}
		else if(!g_ascii_strcasecmp(arg,"table"))
		{
			v3270_clipboard_set(terminal, V3270_COPY_TABLE, FALSE);
		}
		else if(!g_ascii_strcasecmp(arg,"append"))
		{
			v3270_clipboard_set(terminal, V3270_COPY_APPEND, FALSE);
		}
		else
		{
			return errno = EINVAL;
		}

		return 0;

	}

 	if(g_str_has_prefix(cmdline,"print"))
	{

		gchar * arg = cmdline+5;
		g_strstrip(arg);

		if(!(*arg && g_ascii_strcasecmp(arg,"all")))
		{
			// No argument or "text" copy text.
			v3270_print_all(terminal,NULL);
		}
		else if(!g_ascii_strcasecmp(arg,"selected"))
		{
			v3270_print_selected(terminal,NULL);
		}
		else if(!g_ascii_strcasecmp(arg,"copy"))
		{
			v3270_print_copy(terminal,NULL);
		}
		else
		{
			return errno = EINVAL;
		}

		return 0;

	}

 	if(g_str_has_prefix(cmdline,"paste"))
	{

		gchar * arg = cmdline+5;
		g_strstrip(arg);

		v3270_clipboard_get_from_url(terminal,arg);

		return 0;
	}

	if(g_str_has_suffix(cmdline,"?"))
	{
		gchar * str = strchr(cmdline,'?');
		*str = 0;
		g_strstrip(cmdline);
		return get_property(terminal,cmdline);
	}

	if(strchr(cmdline,'='))
	{
		gchar * value = strchr(cmdline,'=');
		*(value++) = 0;
		g_strstrip(cmdline);
		g_strstrip(value);
		return set_property(terminal,cmdline,value);
	}

 	if(g_str_has_prefix(cmdline,"remap"))
	{
		gchar *txtptr = cmdline+5;
		g_strstrip(txtptr);
		v3270_set_remap_filename(terminal,txtptr);
		return 0;
	}

 	if(g_str_has_prefix(cmdline,"set"))
	{
		gchar *txtptr = cmdline+3;
		const gchar * name = get_word(&txtptr);
		g_strstrip(txtptr);
		return set_property(terminal,name,(*txtptr ? txtptr : "1"));
	}

 	if(g_str_has_prefix(cmdline,"get"))
	{
		gchar *txtptr = cmdline+3;
		const gchar * name = get_word(&txtptr);
		g_strstrip(txtptr);
		return get_property(terminal,name);
	}

 	if(g_str_has_prefix(cmdline,"reset"))
	{
		gchar *txtptr = cmdline+3;
		const gchar * name = get_word(&txtptr);
		g_strstrip(txtptr);
		return set_property(terminal,name,(*txtptr ? txtptr : "0"));
	}

	gchar * sep = strchr(cmdline,'=');
	if(sep)
	{
		*(sep++) = 0;
		return set_property(terminal,g_strstrip(cmdline),g_strstrip(sep));
	}
	else
	{
		const LIB3270_ACTION * action = lib3270_action_get_by_name(cmdline);

		if(action)
			return lib3270_action_activate(action,hSession);

	}

	// Check for external interpreters
	{
		gboolean handled = FALSE;
		gchar * args = cmdline;

		while(*args && !g_ascii_isspace(*args))
			args++;

		if(*args)
			*(args++) = 0;

		v3270_trace_signal_emit(GTK_WIDGET(t), V3270_TRACE_SIGNAL_COMMAND, cmdline, args, &handled);

		if(handled)
			return 0;
	}

	// Check for v3270 actions
	{
		const V3270_ACTION * action = v3270_get_actions();

		while(action->name) {
			if(!g_ascii_strcasecmp(action->name,cmdline)) {
				return action->activate(terminal,action);
			}
			action++;
		}
	}

	return errno = ENOENT;
 }