#pragma once

#include <string>
#include <SFML/System/Vector2.hpp>
#include <SFML/Graphics/Texture.hpp>
#include <SFML/System/Clock.hpp>
#include <memory>
#include <thread>

namespace QuickMedia {
    enum class LoadingState {
        NOT_LOADED,
        LOADING,
        FINISHED_LOADING,
        APPLIED_TO_TEXTURE
    };

    struct ThumbnailData {
        bool referenced = false;
        LoadingState loading_state = LoadingState::NOT_LOADED;
        sf::Texture texture;
        std::unique_ptr<sf::Image> image; // Set in another thread. This should be .reset after loading it into |texture|, to save memory
        sf::Clock texture_applied_time;
    };

    class AsyncImageLoader {
    public:
        // Returns false if the image loader is already loading an image. In that case, this function should be called again later.
        // set |resize_target_size| to {0, 0} to disable resizing.
        // |thumbnail_data.loading_state| has to be LoadingState::NOT_LOADED when calling this!
        // Note: this method is not thread-safe
        bool load_thumbnail(const std::string &url, bool local, sf::Vector2i resize_target_size, bool use_tor, std::shared_ptr<ThumbnailData> thumbnail_data);
    private:
        bool loading_image = false;
        std::thread load_image_thread;
    };
}