#include "numberhelper.h"
#include "pixivclient.h"

PixivClient::PixivClient() {
    this->_www_pixiv_net_client.set_keep_alive(true);
    this->_www_pixiv_net_client.set_default_headers({
        {"User-Agent", "Mozilla/5.0 (Android 12; Mobile; rv:97.0) Gecko/97.0 Firefox/97.0"}
    });
}

User PixivClient::get_user(uint64_t user_id) {
    httplib::Result res = this->_www_pixiv_net_client.Get("/touch/ajax/user/details", {
        {"lang", "en"}, {"id", std::to_string(user_id)}
    }, httplib::Headers());
    return this->_handle_result(std::move(res)).at("user_details").get<User>();
}

std::vector<uint64_t> PixivClient::get_illusts(uint64_t user_id) {
    httplib::Result res = this->_www_pixiv_net_client.Get("/touch/ajax/illust/user_illusts", {
        {"lang", "en"}, {"user_id", std::to_string(user_id)}
    }, httplib::Headers());

    nlohmann::json user_illust_ids = this->_handle_result(std::move(res)).at("user_illust_ids");
    std::vector<uint64_t> ret;
    ret.reserve(user_illust_ids.size());

    for (auto &[_, i] : user_illust_ids.items()) {
        ret.push_back(to_ull(std::move(i)));
    }

    return ret;
}

Illust PixivClient::get_illust(uint64_t illust_id) {
    httplib::Result res = this->_www_pixiv_net_client.Get("/touch/ajax/illust/details", {
        {"lang", "en"}, {"illust_id", std::to_string(illust_id)}
    }, httplib::Headers());
    return this->_handle_result(std::move(res)).get<Illust>();
}

nlohmann::json PixivClient::_handle_result(httplib::Result res) {
    if (!res) {
        throw HTTPLibException(res.error());
    }

    nlohmann::json j = nlohmann::json::parse(std::move(res->body));
    if (j.at("error")) {
        throw PixivException(res->status, j.at("message").get<std::string>());
    }
    return j.at("body");
}