#pragma once

#include <mbgl/renderer/render_layer.hpp>
#include <mbgl/style/layers/line_layer_impl.hpp>
#include <mbgl/style/layers/line_layer_properties.hpp>
#include <mbgl/programs/uniforms.hpp>
#include <mbgl/style/image_impl.hpp>
#include <mbgl/layout/pattern_layout.hpp>
#include <mbgl/gfx/texture.hpp>

namespace mbgl {

struct LineFloorwidth : style::DataDrivenPaintProperty<float, attributes::a_floorwidth, uniforms::u_floorwidth> {
    using EvaluatorType = DataDrivenPropertyEvaluator<float, true>;
    static float defaultValue() { return 1.0; }
};

class RenderLinePaintProperties : public style::ConcatenateProperties<
    style::LinePaintProperties,
    style::Properties<LineFloorwidth>> {};

class RenderLineLayer: public RenderLayer {
public:
    using StyleLayerImpl = style::LineLayer::Impl;
    using PatternProperty = style::LinePattern;

    RenderLineLayer(Immutable<style::LineLayer::Impl>);
    ~RenderLineLayer() final = default;

    void transition(const TransitionParameters&) override;
    void evaluate(const PropertyEvaluationParameters&) override;
    bool hasTransition() const override;
    bool hasCrossfade() const override;
    void render(PaintParameters&, RenderSource*) override;
    void update() final;

    bool queryIntersectsFeature(
            const GeometryCoordinates&,
            const GeometryTileFeature&,
            const float,
            const TransformState&,
            const float,
            const mat4&) const override;

    // Paint properties
    style::LinePaintProperties::Unevaluated unevaluated;
    RenderLinePaintProperties::PossiblyEvaluated evaluated;

    const style::LineLayer::Impl& impl() const;

private:
    float getLineWidth(const GeometryTileFeature&, const float) const;
    void updateColorRamp();
    CrossfadeParameters crossfade;
    PremultipliedImage colorRamp;
    optional<gfx::Texture> colorRampTexture;
};

inline const RenderLineLayer* toRenderLineLayer(const RenderLayer* layer) {
    return static_cast<const RenderLineLayer*>(layer);
}

} // namespace mbgl