/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 *
 * This file is part of PortaPack.
 *
 * 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 2, 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __UI_RSSI_H__
#define __UI_RSSI_H__

#include "ui.hpp"
#include "ui_widget.hpp"
#include "ui_painter.hpp"
#include "event_m0.hpp"
#include "message.hpp"
#include <cstdint>

namespace ui {

    class RSSI : public Widget {
        public:
            std::function<void(RSSI&)> on_select { };
            std::function<void(RSSI&)> on_touch_release { }; // Executed when releasing touch, after on_select.
            std::function<void(RSSI&)> on_touch_press { }; // Executed when touching, before on_select.
            std::function<bool(RSSI&, KeyEvent)> on_dir { };
            std::function<void(RSSI&)> on_highlight { };

            RSSI(Rect parent_rect, bool instant_exec); // instant_exec: Execute on_select when you touching instead of releasing
            RSSI(
                    Rect parent_rect
                ) : RSSI { parent_rect, false }
                 {
                 }

            RSSI(
                ) : RSSI { { }, { } }
            {
            }

            int16_t get_min();
            int16_t get_avg();
            int16_t get_max();
            int16_t get_delta();
            void set_vertical_rssi(bool enabled);
            void set_peak(bool enabled, size_t duration);

            void paint(Painter& painter) override;
            void on_focus() override;
            bool on_key(const KeyEvent key) override;
            bool on_touch(const TouchEvent event) override;

        private:
            int16_t min_ = 0;
            int16_t avg_ = 0;
            int16_t max_ = 0;
            int16_t peak_ = 0 ;
            size_t peak_duration_ = 0 ;
            bool instant_exec_ { false };

            bool pitch_rssi_enabled = false;
            bool vertical_rssi_enabled = false; // scale [vertically/from bottom to top]
                                                // instead of [horizontally/from left to right]
            bool peak_enabled = false;
            size_t peak_duration = 1000;        // peak duration in msec before being reset to actual max_rssi 

            MessageHandlerRegistration message_handler_stats {
                Message::ID::RSSIStatistics,
                    [this](const Message* const p) {
                        this->on_statistics_update(static_cast<const RSSIStatisticsMessage*>(p)->statistics);
                    }
            };

            MessageHandlerRegistration message_handler_pitch_rssi {
                Message::ID::PitchRSSIConfigure,
                    [this](const Message* const p) {
                        const auto message = *reinterpret_cast<const PitchRSSIConfigureMessage*>(p);
                        this->set_pitch_rssi(message.enabled);
                    }
            };

            void on_statistics_update(const RSSIStatistics& statistics);
            void set_pitch_rssi(bool enabled);
    };

    struct RSSIGraph_entry {
        int16_t rssi_min { 0 };
        int16_t rssi_avg { 0 };
        int16_t rssi_max { 0 };
        int16_t db { 0 };
    };

    using RSSIGraphList = std::vector<RSSIGraph_entry>;

    class RSSIGraph : public Widget {
        public:
            RSSIGraph(
                    const Rect parent_rect
                    ) : Widget { parent_rect }
            {
            }
            void paint(Painter& painter) override;
            void add_values(int16_t rssi_min, int16_t rssi_avg, int16_t rssi_max, int16_t db );
            void set_nb_columns( int16_t nb );
            
            void on_hide() override ;
            void on_show() override ;

        private:
            uint16_t nb_columns_before_hide = 16 ;
            uint16_t nb_columns = 16 ;
            RSSIGraphList graph_list { } ;
    };

}

#endif/*__UI_RSSI_H__*/