#include "config.hpp"
#include <fstream>
#include <stdexcept>

namespace svapi {

Config Config::fromJson(const nlohmann::json& j) {
    Config c;
    c.logLevel = j.value("log_level", c.logLevel);
    if (j.contains("http") && j["http"].is_object()) {
        const auto& h = j["http"];
        c.httpBind = h.value("bind_address", c.httpBind);
        c.httpPort = h.value("port", c.httpPort);
    }
    if (j.contains("database") && j["database"].is_object()) {
        c.dbAddress = j["database"].value("address", c.dbAddress);
    }
    return c;
}

Config Config::load(const std::string& path) {
    std::ifstream f(path);
    if (!f) throw std::runtime_error("cannot open config file: " + path);
    nlohmann::json j;
    f >> j;
    return fromJson(j);
}

} // namespace svapi