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/*
 * Copyright (c) 2014-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Sluift/ElementConvertors/ResultSetConvertor.h>

#include <memory>

#include <boost/numeric/conversion/cast.hpp>

#include <lua.hpp>

using namespace Swift;

ResultSetConvertor::ResultSetConvertor() :
        GenericLuaElementConvertor<ResultSet>("result_set") {
}

ResultSetConvertor::~ResultSetConvertor() {
}

std::shared_ptr<ResultSet> ResultSetConvertor::doConvertFromLua(lua_State* L) {
    std::shared_ptr<ResultSet> result = std::make_shared<ResultSet>();
    lua_getfield(L, -1, "max_items");
    if (lua_isstring(L, -1)) {
        result->setMaxItems(boost::numeric_cast<int>(lua_tonumber(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "count");
    if (lua_isnumber(L, -1)) {
        result->setCount(boost::numeric_cast<int>(lua_tonumber(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "index");
    if (lua_isnumber(L, -1)) {
        result->setIndex(boost::numeric_cast<int>(lua_tonumber(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "first_id_index");
    if (lua_isstring(L, -1)) {
        result->setFirstIDIndex(boost::numeric_cast<int>(lua_tonumber(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "first_id");
    if (lua_isstring(L, -1)) {
        result->setFirstID(std::string(lua_tostring(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "last_id");
    if (lua_isstring(L, -1)) {
        result->setLastID(std::string(lua_tostring(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "after");
    if (lua_isstring(L, -1)) {
        result->setAfter(std::string(lua_tostring(L, -1)));
    }
    lua_pop(L, 1);
    lua_getfield(L, -1, "before");
    if (lua_isstring(L, -1)) {
        result->setBefore(std::string(lua_tostring(L, -1)));
    }
    lua_pop(L, 1);
    return result;
}

void ResultSetConvertor::doConvertToLua(lua_State* L, std::shared_ptr<ResultSet> payload) {
    lua_createtable(L, 0, 0);
    if (payload->getMaxItems()) {
        lua_pushnumber(L, *payload->getMaxItems());
        lua_setfield(L, -2, "max_items");
    }
    if (payload->getCount()) {
        lua_pushnumber(L, *payload->getCount());
        lua_setfield(L, -2, "count");
    }
    if (payload->getIndex()) {
        lua_pushnumber(L, *payload->getIndex());
        lua_setfield(L, -2, "index");
    }
    if (payload->getFirstIDIndex()) {
        lua_pushnumber(L, *payload->getFirstIDIndex());
        lua_setfield(L, -2, "first_id_index");
    }
    if (payload->getFirstID()) {
        lua_pushstring(L, (*payload->getFirstID()).c_str());
        lua_setfield(L, -2, "first_id");
    }
    if (payload->getLastID()) {
        lua_pushstring(L, (*payload->getLastID()).c_str());
        lua_setfield(L, -2, "last_id");
    }
    if (payload->getAfter()) {
        lua_pushstring(L, (*payload->getAfter()).c_str());
        lua_setfield(L, -2, "after");
    }
    if (payload->getBefore()) {
        lua_pushstring(L, (*payload->getBefore()).c_str());
        lua_setfield(L, -2, "before");
    }
}

boost::optional<LuaElementConvertor::Documentation> ResultSetConvertor::getDocumentation() const {
    return Documentation(
        "ResultSet",
        "This table has the following fields:\n\n"
        "- `max_items`: number (Optional)\n"
        "- `count`: number (Optional)\n"
        "- `first_id_index`: number (Optional)\n"
        "- `first_id`: string (Optional)\n"
        "- `last_id`: string (Optional)\n"
        "- `after`: string (Optional)\n"
    );
}