/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 *
 * 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 __SPI_IMAGE_H__
#define __SPI_IMAGE_H__

#include <cstdint>
#include <cstddef>

#include "memory_map.hpp"

extern uint32_t _textend;

namespace portapack {
namespace spi_flash {

struct image_tag_t {
    constexpr image_tag_t()
        : c{0, 0, 0, 0} {
    }

    constexpr image_tag_t(
        char c0,
        char c1,
        char c2,
        char c3)
        : c{c0, c1, c2, c3} {
    }

    image_tag_t(const image_tag_t& other) {
        c[0] = other.c[0];
        c[1] = other.c[1];
        c[2] = other.c[2];
        c[3] = other.c[3];
    }

    image_tag_t& operator=(const image_tag_t& other) {
        c[0] = other.c[0];
        c[1] = other.c[1];
        c[2] = other.c[2];
        c[3] = other.c[3];
        return *this;
    }

    bool operator==(const image_tag_t& other) const {
        return (c[0] == other.c[0]) && (c[1] == other.c[1]) && (c[2] == other.c[2]) && (c[3] == other.c[3]);
    }

    operator bool() const {
        return (c[0] != 0) || (c[1] != 0) || (c[2] != 0) || (c[3] != 0);
    }

   private:
    char c[4];
};

constexpr image_tag_t image_tag_acars{'P', 'A', 'C', 'A'};
constexpr image_tag_t image_tag_adsb_rx{'P', 'A', 'D', 'R'};
constexpr image_tag_t image_tag_afsk_rx{'P', 'A', 'F', 'R'};
constexpr image_tag_t image_tag_aprs_rx{'P', 'A', 'P', 'R'};
constexpr image_tag_t image_tag_btle_rx{'P', 'B', 'T', 'R'};
constexpr image_tag_t image_tag_btle_tx{'P', 'B', 'T', 'T'};
constexpr image_tag_t image_tag_nrf_rx{'P', 'N', 'R', 'R'};
constexpr image_tag_t image_tag_ais{'P', 'A', 'I', 'S'};
constexpr image_tag_t image_tag_am_audio{'P', 'A', 'M', 'A'};
constexpr image_tag_t image_tag_am_tv{'P', 'A', 'M', 'T'};
constexpr image_tag_t image_tag_capture{'P', 'C', 'A', 'P'};
constexpr image_tag_t image_tag_ert{'P', 'E', 'R', 'T'};
constexpr image_tag_t image_tag_nfm_audio{'P', 'N', 'F', 'M'};
constexpr image_tag_t image_tag_pocsag{'P', 'P', 'O', 'C'};
constexpr image_tag_t image_tag_pocsag2{'P', 'P', 'O', '2'};
constexpr image_tag_t image_tag_sonde{'P', 'S', 'O', 'N'};
constexpr image_tag_t image_tag_tpms{'P', 'T', 'P', 'M'};
constexpr image_tag_t image_tag_wfm_audio{'P', 'W', 'F', 'M'};
constexpr image_tag_t image_tag_wideband_spectrum{'P', 'S', 'P', 'E'};
constexpr image_tag_t image_tag_test{'P', 'T', 'S', 'T'};

constexpr image_tag_t image_tag_adsb_tx{'P', 'A', 'D', 'T'};
constexpr image_tag_t image_tag_afsk{'P', 'A', 'F', 'T'};
constexpr image_tag_t image_tag_audio_tx{'P', 'A', 'T', 'X'};
constexpr image_tag_t image_tag_fsktx{'P', 'F', 'S', 'K'};
constexpr image_tag_t image_tag_fskrx{'P', 'F', 'S', 'R'};
constexpr image_tag_t image_tag_jammer{'P', 'J', 'A', 'M'};
constexpr image_tag_t image_tag_mic_tx{'P', 'M', 'T', 'X'};
constexpr image_tag_t image_tag_ook{'P', 'O', 'O', 'K'};
constexpr image_tag_t image_tag_rds{'P', 'R', 'D', 'S'};
constexpr image_tag_t image_tag_replay{'P', 'R', 'E', 'P'};
constexpr image_tag_t image_tag_gps{'P', 'G', 'P', 'S'};
constexpr image_tag_t image_tag_siggen{'P', 'S', 'I', 'G'};
constexpr image_tag_t image_tag_spectrum_painter{'P', 'S', 'P', 'T'};
constexpr image_tag_t image_tag_sstv_tx{'P', 'S', 'T', 'X'};
constexpr image_tag_t image_tag_tones{'P', 'T', 'O', 'N'};
constexpr image_tag_t image_tag_flash_utility{'P', 'F', 'U', 'T'};
constexpr image_tag_t image_tag_usb_sd{'P', 'U', 'S', 'B'};

constexpr image_tag_t image_tag_weather{'P', 'W', 'T', 'H'};
constexpr image_tag_t image_tag_subghzd{'P', 'S', 'G', 'D'};

constexpr image_tag_t image_tag_noop{'P', 'N', 'O', 'P'};

constexpr image_tag_t image_tag_hackrf{'H', 'R', 'F', '1'};

struct chunk_t {
    const image_tag_t tag;
    const uint32_t length;
    const uint32_t compressed_data_size;
    const uint8_t data[];

    const chunk_t* next() const {
        return reinterpret_cast<const chunk_t*>(&data[length]);
    }
};

struct region_t {
    const size_t offset;
    const size_t size;

    constexpr const void* base() const {
        return reinterpret_cast<void*>(portapack::memory::map::spifi_cached.base() + offset);
    }
};

const region_t images{
    .offset = reinterpret_cast<uint32_t>(&_textend),
    .size = portapack::memory::map::spifi_cached.size() - reinterpret_cast<uint32_t>(&_textend),
};

const region_t application{
    .offset = 0x00000,
    .size = reinterpret_cast<uint32_t>(&_textend),
};

} /* namespace spi_flash */
} /* namespace portapack */

#endif /*__SPI_IMAGE_H__*/