#define STB_IMAGE_IMPLEMENTATION
#include "deps/stb_image.h"

#include "image.hpp"

class ImageImpl : public Image {
public:
    ImageImpl(unsigned char* data, int x, int y) : data(data), width(x), height(y) {}
    ImageImpl(const ImageImpl&) = delete;
    ~ImageImpl() {
        if(data)
            stbi_image_free(data);
    }
    std::pair<int32_t, int32_t> img_size() override {
        return std::make_pair(width, height);
    }
    const unsigned char* img_data() override {
        return data;
    }

private:
    unsigned char* data = nullptr;
    int32_t width;
    int32_t height;
};

std::shared_ptr<Image> Image::load_from_file(const char* filename) {
    int x, y, n;
    auto data = stbi_load(filename, &x, &y, &n, STBI_rgb_alpha);
    return std::make_shared<ImageImpl>(data, x, y);
}