/* 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/>.
 *
 */

#ifndef NUVIE_CORE_CONVERSE_GUMP_H
#define NUVIE_CORE_CONVERSE_GUMP_H

#include "ultima/nuvie/misc/call_back.h"
#include "ultima/nuvie/gui/widgets/gui_widget.h"
#include "ultima/shared/std/containers.h"
#include "ultima/shared/std/string.h"

namespace Ultima {
namespace Nuvie {

using Std::list;


class Configuration;
class Font;
class MsgScroll;
class Actor;

class ConverseGump: public MsgScroll {
	Std::list<MsgText> conv_keywords;
	Std::list<MsgText> permitted_input_keywords;

	Std::list<MsgText> *keyword_list;

	unsigned char *npc_portrait;
	unsigned char *avatar_portrait;

	bool found_break_char;
	bool solid_bg;
	bool force_solid_bg;
	uint8 converse_bg_color;

	uint16 cursor_position;

	uint8 portrait_width;
	uint8 portrait_height;
	uint8 frame_w;
	uint8 frame_h;
	uint16 min_w;

	nuvie_game_t game_type;

public:

	ConverseGump(const Configuration *cfg, Font *f, Screen *s);
	~ConverseGump() override;

	void set_actor_portrait(Actor *a);
	unsigned char *create_framed_portrait(Actor *a);
	bool parse_token(MsgText *token) override;
	Std::string get_token_string_at_pos(uint16 x, uint16 y) override;
	void display_string(const Std::string &s, Font *f, bool include_on_map_window) override;
	void set_talking(bool state, Actor *actor = nullptr) override;
	void set_font(uint8 font_type) override {}
//bool get_solid_bg() { return solid_bg; }
	void set_solid_bg(bool val) {
		solid_bg = val;
	}

	void Display(bool full_redraw) override;

	GUI_status KeyDown(const Common::KeyState &key) override;
	GUI_status MouseUp(int x, int y, Events::MouseButton button) override;

	GUI_status MouseDown(int x, int y, Events::MouseButton button) override {
		return GUI_YUM;
	}
	GUI_status MouseMotion(int x, int y, uint8 state) override {
		return GUI_YUM;
	}
	GUI_status MouseEnter(uint8 state) override {
		return GUI_YUM;
	}
	GUI_status MouseLeave(uint8 state) override {
		return GUI_YUM;
	}
	GUI_status MouseClick(int x, int y, Events::MouseButton button) override {
		return GUI_YUM;
	}
	GUI_status MouseDouble(int x, int y, Events::MouseButton button) override {
		return GUI_YUM;
	}
	GUI_status MouseDelayed(int x, int y, Events::MouseButton button) override {
		return GUI_YUM;
	}
	GUI_status MouseHeld(int x, int y, Events::MouseButton button) override {
		return GUI_YUM;
	}

	void set_found_break_char(bool val) {
		found_break_char = val;
	}

	bool input_buf_add_char(char c) override;
	bool input_buf_remove_char() override;

	bool is_converse_finished() override {
		return (is_holding_buffer_empty() && msg_buf.size() == 1 && msg_buf.back()->total_length == 0);
	}

	void drawCursor(uint16 x, uint16 y) override;

protected:
	Std::string strip_whitespace_after_break(Std::string s);
	void add_keyword(Std::string keyword);

	void set_permitted_input(const char *allowed) override;
	void clear_permitted_input() override;

	bool cursor_at_input_section() const {
		return (keyword_list && cursor_position == keyword_list->size());
	}
	void cursor_reset() {
		cursor_position = 0;
	}
	void cursor_move_to_input() {
		cursor_position = keyword_list ? keyword_list->size() : 0;
	}

	void input_add_string(Std::string token_str);

	Std::string get_token_at_cursor();

	bool is_permanent_keyword(const Std::string &keyword);
	void parse_fm_towns_token(MsgText *token);

private:
	unsigned char *get_portrait_data(Actor *a);
};

} // End of namespace Nuvie
} // End of namespace Ultima

#endif