/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2020                                                               *
 *                                                                                       *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
 * software and associated documentation files (the "Software"), to deal in the Software *
 * without restriction, including without limitation the rights to use, copy, modify,    *
 * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
 * permit persons to whom the Software is furnished to do so, subject to the following   *
 * conditions:                                                                           *
 *                                                                                       *
 * The above copyright notice and this permission notice shall be included in all copies *
 * or substantial portions of the Software.                                              *
 *                                                                                       *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
 ****************************************************************************************/

#include <openspace/engine/globals.h>

namespace openspace::luascriptfunctions {

/**
* \ingroup LuaScripts
* setRenderer(string):
* Set renderer
*/
int setRenderer(lua_State* L) {
    ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::setRenderer");

    const int type = lua_type(L, -1);
    if (type != LUA_TSTRING) {
        return ghoul::lua::luaError(L, "Expected argument of type 'string'");
    }

    const std::string& renderer = ghoul::lua::value<std::string>(
        L,
        1,
        ghoul::lua::PopValue::Yes
    );
    global::renderEngine.setRendererFromString(renderer);

    ghoul_assert(lua_gettop(L) == 0, "Incorrect number of items left on stack");
    return 0;
}

int addScreenSpaceRenderable(lua_State* L) {
    ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::addScreenSpaceRenderable");

    using ghoul::lua::errorLocation;

    ghoul::Dictionary d;
    try {
        ghoul::lua::luaDictionaryFromState(L, d);
        lua_settop(L, 0);
    }
    catch (const ghoul::lua::LuaFormatException& e) {
        LERRORC("addScreenSpaceRenderable", e.what());
        lua_settop(L, 0);
        return 0;
    }

    std::unique_ptr<ScreenSpaceRenderable> s =
        ScreenSpaceRenderable::createFromDictionary(d);

    global::renderEngine.addScreenSpaceRenderable(std::move(s));

    ghoul_assert(lua_gettop(L) == 0, "Incorrect number of items left on stack");
    return 0;
}

int removeScreenSpaceRenderable(lua_State* L) {
    ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::removeScreenSpaceRenderable");

    const std::string& name = ghoul::lua::value<std::string>(
        L,
        1,
        ghoul::lua::PopValue::Yes
    );
    global::renderEngine.removeScreenSpaceRenderable(name);

    ghoul_assert(lua_gettop(L) == 0, "Incorrect number of items left on stack");
    return 0;
}

int takeScreenshot(lua_State* L) {
    ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::takeScreenshot");

    global::renderEngine.takeScreenshot();
    const unsigned int screenshotNumber = global::renderEngine.latestScreenshotNumber();

    lua_pushinteger(L, screenshotNumber);
    return 1;
}

}// namespace openspace::luascriptfunctions
