#pragma once

#include <vector>
#include <utility>
#include <optional>

#include <httplib/httplib.h>
#include <nlohmann/json.hpp>

struct Images {
    std::optional<std::string> original;
    std::vector<std::string> thumbnails;
};

struct User {
    std::string username;
    std::string display_name;
    uint64_t user_id;

    std::optional<Images> cover_images;
    Images profile_pictures;
    std::vector<std::pair<std::string, std::string>> links;
};

class PixivClient {
public:
    PixivClient();

    User get_user(uint64_t user_id);
    std::vector<uint64_t> get_illusts(uint64_t user_id);

private:
    nlohmann::json _handle_result(httplib::Result res);
    httplib::Client _www_pixiv_net_client{"https://www.pixiv.net"};
};

class HTTPLibException : public std::exception {
public:
    HTTPLibException(httplib::Error error) {
        this->_message = httplib::to_string(error);
    }

    const constexpr char* what() const noexcept {
        return this->_message.c_str();
    }

private:
    std::string _message;
};

class PixivException : public std::exception {
public:
    PixivException(int status_, std::string message) : status(status_), _message(std::move(message)) {}

    const constexpr char* what() const noexcept {
        return this->_message.c_str();
    }

    int status;

private:
    std::string _message;
};

void from_json(const nlohmann::json& j, User& user);