/*
 * 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 __ERT_APP_H__
#define __ERT_APP_H__

#include "ui_navigation.hpp"
#include "ui_receiver.hpp"
#include "ui_freq_field.hpp"
#include "ui_rssi.hpp"
#include "ui_channel.hpp"

#include "event_m0.hpp"
#include "app_settings.hpp"
#include "radio_state.hpp"
#include "log_file.hpp"

#include "ert_packet.hpp"

#include "recent_entries.hpp"

#include <cstddef>
#include <string>

struct ERTKey {
    ert::ID id;
    ert::CommodityType commodity_type;

    constexpr ERTKey(
        ert::ID id = ert::invalid_id,
        ert::CommodityType commodity_type = ert::invalid_commodity_type)
        : id{id},
          commodity_type{commodity_type} {
    }

    ERTKey(const ERTKey& other) = default;

    ERTKey& operator=(const ERTKey& other) {
        id = other.id;
        commodity_type = other.commodity_type;
        return *this;
    }

    bool operator==(const ERTKey& other) const {
        return (id == other.id) && (commodity_type == other.commodity_type);
    }
};

struct ERTRecentEntry {
    using Key = ERTKey;

    // TODO: Is this the right choice of invalid key value?
    static const Key invalid_key;

    ert::ID id{ert::invalid_id};
    ert::CommodityType commodity_type{ert::invalid_commodity_type};

    size_t received_count{0};

    ert::Consumption last_consumption{};

    ERTRecentEntry(
        const Key& key)
        : id{key.id},
          commodity_type{key.commodity_type} {
    }

    Key key() const {
        return {id, commodity_type};
    }

    void update(const ert::Packet& packet);
};

class ERTLogger {
   public:
    Optional<File::Error> append(const std::filesystem::path& filename) {
        return log_file.append(filename);
    }

    void on_packet(const ert::Packet& packet, const uint32_t target_frequency);

   private:
    LogFile log_file{};
};

using ERTRecentEntries = RecentEntries<ERTRecentEntry>;

namespace ui {

using ERTRecentEntriesView = RecentEntriesView<ERTRecentEntries>;

class ERTAppView : public View {
   public:
    ERTAppView(NavigationView& nav);
    ~ERTAppView();

    void set_parent_rect(const Rect new_parent_rect) override;

    // Prevent painting of region covered entirely by a child.
    // TODO: Add flag to View that specifies view does not need to be cleared before painting.
    void paint(Painter&) override{};

    void focus() override;

    std::string title() const override { return "ERT RX"; };

   private:
    ERTRecentEntries recent{};
    std::unique_ptr<ERTLogger> logger{};

    NavigationView& nav_;
    RxRadioState radio_state_{
        911600000 /* frequency */,
        2500000 /* bandwidth */,
        4194304 /* sampling rate */};
    app_settings::SettingsManager settings_{
        "rx_ert", app_settings::Mode::RX};

    const RecentEntriesColumns columns{{
        {"ID", 10},
        {"Tp", 2},
        {"Consumpt", 10},
        {"Cnt", 3},
    }};
    ERTRecentEntriesView recent_entries_view{columns, recent};

    static constexpr auto header_height = 1 * 16;

    RxFrequencyField field_frequency{
        {0 * 8, 0 * 16},
        nav_};

    RFAmpField field_rf_amp{
        {13 * 8, 0 * 16}};

    LNAGainField field_lna{
        {15 * 8, 0 * 16}};

    VGAGainField field_vga{
        {18 * 8, 0 * 16}};

    RSSI rssi{
        {21 * 8, 0, 6 * 8, 4},
    };

    MessageHandlerRegistration message_handler_packet{
        Message::ID::ERTPacket,
        [this](Message* const p) {
            const auto message = static_cast<const ERTPacketMessage*>(p);
            const ert::Packet packet{message->type, message->packet};
            this->on_packet(packet);
        }};

    void on_packet(const ert::Packet& packet);
    void on_show_list();
};

} /* namespace ui */

#endif /*__ERT_APP_H__*/