/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2020                                                               *
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 * software and associated documentation files (the "Software"), to deal in the Software *
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 * or substantial portions of the Software.                                              *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
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 ****************************************************************************************/

#include <openspace/scene/lightsource.h>

#include <openspace/documentation/documentation.h>
#include <openspace/documentation/verifier.h>
#include <openspace/util/factorymanager.h>
#include <openspace/scene/scenegraphnode.h>
#include <openspace/util/updatestructures.h>
#include <ghoul/logging/logmanager.h>
#include <ghoul/misc/dictionary.h>
#include <ghoul/misc/templatefactory.h>

namespace {
    constexpr const char* KeyType = "Type";

    constexpr const char* KeyIdentifier = "Identifier";

    constexpr openspace::properties::Property::PropertyInfo EnabledInfo = {
        "Enabled",
        "Enabled",
        "Whether the light source is enabled or not"
    };
} // namespace

namespace openspace {

bool LightSource::isEnabled() const {
    return _enabled;
}

documentation::Documentation LightSource::Documentation() {
    using namespace openspace::documentation;

    return {
        "Light Source",
        "core_light_source",
        {
            {
                KeyType,
                new StringAnnotationVerifier("Must name a valid LightSource type"),
                Optional::No,
                "The type of the light source that is described in this element. "
                "The available types of light sources depend on the configuration "
                "of the application and can be written to disk on "
                "application startup into the FactoryDocumentation."
            },
            {
                KeyIdentifier,
                new StringVerifier,
                Optional::No,
                "The identifier of the light source."
            },
            {
                EnabledInfo.identifier,
                new BoolVerifier,
                Optional::Yes,
                EnabledInfo.description
            }
        }
    };
}

std::unique_ptr<LightSource> LightSource::createFromDictionary(
    const ghoul::Dictionary& dictionary)
{
    documentation::testSpecificationAndThrow(Documentation(), dictionary, "LightSource");

    const std::string timeFrameType = dictionary.value<std::string>(KeyType);

    auto factory = FactoryManager::ref().factory<LightSource>();
    LightSource* source = factory->create(timeFrameType, dictionary);
    
    const std::string identifier = dictionary.value<std::string>(KeyIdentifier);
    source->setIdentifier(identifier);

    return std::unique_ptr<LightSource>(source);
}

LightSource::LightSource()
    : properties::PropertyOwner({ "LightSource" })
    , _enabled(EnabledInfo, true)
{
    addProperty(_enabled);
}

LightSource::LightSource(const ghoul::Dictionary& dictionary)
    : properties::PropertyOwner({ "LightSource" })
    , _enabled(EnabledInfo, true)
{
    if (dictionary.hasValue<bool>(EnabledInfo.identifier)) {
        _enabled = dictionary.value<bool>(EnabledInfo.identifier);
    }

    addProperty(_enabled);
}

bool LightSource::initialize() {
    return true;
}

} // namespace openspace
