// Display images inside a terminal
// Copyright (C) 2023  JustKidding
//
// 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 <https://www.gnu.org/licenses/>.

#ifndef LIBVIPS_IMAGE_H
#define LIBVIPS_IMAGE_H

#include "image.hpp"
#include "util/ptr.hpp"

#include <filesystem>
#include <spdlog/spdlog.h>
#include <string>
#include <vips/vips8>

class LibvipsImage : public Image
{
  public:
    LibvipsImage(std::shared_ptr<Dimensions> new_dims, const std::string &filename, bool in_cache);

    [[nodiscard]] auto dimensions() const -> const Dimensions & override;
    [[nodiscard]] auto width() const -> int override;
    [[nodiscard]] auto height() const -> int override;
    [[nodiscard]] auto size() const -> size_t override;
    [[nodiscard]] auto data() const -> const unsigned char * override;
    [[nodiscard]] auto channels() const -> int override;

    void next_frame() override;
    [[nodiscard]] auto frame_delay() const -> int override;
    [[nodiscard]] auto is_animated() const -> bool override;
    [[nodiscard]] auto filename() const -> std::string override;

  private:
    vips::VImage image;
    vips::VImage backup;

    c_unique_ptr<unsigned char, g_free> _data;
    std::filesystem::path path;
    std::shared_ptr<Dimensions> dims;

    std::shared_ptr<Flags> flags;
    std::shared_ptr<spdlog::logger> logger;

    uint32_t max_width;
    uint32_t max_height;
    size_t _size = 0;

    // for animated pictures
    int top = 0;
    int orig_height;
    int npages = 0;
    bool is_anim = false;
    bool in_cache;

    void process_image();
    void resize_image();
};

#endif