/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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.
 *
 * 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 General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "ags/shared/ac/common.h"
#include "ags/engine/ac/event.h"
#include "ags/shared/ac/game_setup_struct.h"
#include "ags/engine/ac/game_state.h"
#include "ags/engine/ac/global_gui.h"
#include "ags/engine/ac/global_inventory_item.h"
#include "ags/engine/ac/global_translation.h"
#include "ags/engine/ac/inventory_item.h"
#include "ags/engine/ac/inv_window.h"
#include "ags/engine/ac/properties.h"
#include "ags/engine/ac/string.h"
#include "ags/engine/ac/dynobj/cc_inventory.h"
#include "ags/engine/debugging/debug_log.h"
#include "ags/shared/gui/gui_main.h"
#include "ags/shared/gui/gui_inv.h"
#include "ags/engine/script/script.h"
#include "ags/globals.h"

namespace AGS3 {

using namespace AGS::Shared;

bool ValidateInventoryItem(const char *api_name, int invitem) {
	// Inventory Item 0 is a "dummy" slot in AGS historically (idk why)
	if ((invitem < 1) || (invitem >= _GP(game).numinvitems)) {
		debug_script_warn("%s: invalid inventory item specified, id %d, valid range is 1..%d", invitem, _GP(game).numinvitems - 1);
		return false;
	}
	return true;
}

void set_inv_item_pic(int invi, int piccy) {
	if (!ValidateInventoryItem("SetInvItemPic", invi))
		return;

	if (_GP(game).invinfo[invi].pic == piccy)
		return;

	if (_GP(game).invinfo[invi].pic == _GP(game).invinfo[invi].cursorPic) {
		// Backwards compatibility -- there didn't used to be a cursorPic,
		// so if they're the same update both.
		set_inv_item_cursorpic(invi, piccy);
	}

	_GP(game).invinfo[invi].pic = piccy;
	GUI::MarkInventoryForUpdate(-1, false);
}

void SetInvItemName(int invi, const char *newName) {
	if (!ValidateInventoryItem("SetInvName", invi))
		return;

	_GP(game).invinfo[invi].name = newName;
	// might need to redraw the GUI if it has the inv item name on it
	GUI::MarkSpecialLabelsForUpdate(kLabelMacro_Overhotspot);
}

int GetInvAt(int atx, int aty) {
	int ongui = GetGUIAt(atx, aty);
	if (ongui >= 0) {
		data_to_game_coords(&atx, &aty);
		int32_t onobj = _GP(guis)[ongui].FindControlAt(atx, aty);
		GUIObject *guio = _GP(guis)[ongui].GetControl(onobj);
		if (guio) {
			_G(mouse_ifacebut_xoffs) = atx - _GP(guis)[ongui].X - guio->X;
			_G(mouse_ifacebut_yoffs) = aty - _GP(guis)[ongui].Y - guio->Y;
		}
		if (guio && (_GP(guis)[ongui].GetControlType(onobj) == kGUIInvWindow))
			return offset_over_inv((GUIInvWindow *)guio);
	}
	return -1;
}

void GetInvName(int indx, char *buff) {
	VALIDATE_STRING(buff);
	if (!ValidateInventoryItem("GetInvName", indx))
		return;
	snprintf(buff, MAX_MAXSTRLEN, "%s", get_translation(_GP(game).invinfo[indx].name.GetCStr()));
}

int GetInvGraphic(int indx) {
	if (!ValidateInventoryItem("GetInvGraphic", indx))
		return 0;

	return _GP(game).invinfo[indx].pic;
}

void RunInventoryInteraction(int iit, int mood) {
	if (!ValidateInventoryItem("RunInventoryInteraction", iit))
		return;

	// convert cursor mode to event index (in inventoryitem event table)
	// TODO: probably move this conversion table elsewhere? should be a global info
	int evnt;
	switch (mood) {
		case MODE_LOOK:	evnt = 0; break;
		case MODE_HAND:	evnt = 1; break;
		case MODE_TALK:	evnt = 2; break;
		case MODE_USE: evnt = 3; break;
		default: evnt = -1; break;
	}
	const int otherclick_evt = 4; // TODO: make global constant (inventory other-click evt)

	// For USE verb: remember active inventory
	if (mood == MODE_USE) {
		_GP(play).usedinv = _G(playerchar)->activeinv;
	}

	if (evnt < 0) // on any non-supported mode - use "other-click"
		evnt = otherclick_evt;

	const auto obj_evt = ObjectEvent("inventory%d", iit,
									 RuntimeScriptValue().SetScriptObject(&_G(scrInv)[iit], &_GP(ccDynamicInv)), mood);

	if (_G(loaded_game_file_version) > kGameVersion_272) {
		run_interaction_script(obj_evt, _GP(game).invScripts[iit].get(), evnt);
	} else {
		run_interaction_event(obj_evt, _GP(game).intrInv[iit].get(), evnt);
	}
}

int IsInventoryInteractionAvailable(int item, int mood) {
	if (!ValidateInventoryItem("IsInventoryInteractionAvailable", item))
		return 0;

	_GP(play).check_interaction_only = 1;

	RunInventoryInteraction(item, mood);

	int ciwas = _GP(play).check_interaction_only;
	_GP(play).check_interaction_only = 0;

	if (ciwas == 2)
		return 1;

	return 0;
}

int GetInvProperty(int item, const char *property) {
	if (!ValidateInventoryItem("GetInvProperty", item))
		return 0;

	return get_int_property(_GP(game).invProps[item], _GP(play).invProps[item], property);
}

void GetInvPropertyText(int item, const char *property, char *bufer) {
	if (!ValidateInventoryItem("GetInvPropertyText", item))
		return;

	get_text_property(_GP(game).invProps[item], _GP(play).invProps[item], property, bufer);
}

} // namespace AGS3