#ifndef MBGL_SYMBOL_LAYER
#define MBGL_SYMBOL_LAYER

#include <mbgl/style/style_layer.hpp>
#include <mbgl/style/layout_property.hpp>
#include <mbgl/style/paint_property.hpp>

namespace mbgl {

class SpriteAtlas;

class SymbolLayoutProperties {
public:
    LayoutProperty<PlacementType> placement { PlacementType::Point };
    LayoutProperty<float> spacing { 250.0f };
    LayoutProperty<bool> avoidEdges { false };

    class IconProperties {
    public:
        LayoutProperty<bool> allowOverlap { false };
        LayoutProperty<bool> ignorePlacement { false };
        LayoutProperty<bool> optional { false };
        LayoutProperty<RotationAlignmentType> rotationAlignment { RotationAlignmentType::Viewport };
        LayoutProperty<float> size { 1.0f };
        LayoutProperty<std::string> image { "" };
        LayoutProperty<float> rotate { 0.0f };
        LayoutProperty<float> padding { 2.0f };
        LayoutProperty<bool> keepUpright { false };
        LayoutProperty<std::array<float, 2>> offset { {{ 0, 0 }} };
    } icon;

    class TextProperties {
    public:
        LayoutProperty<RotationAlignmentType> rotationAlignment { RotationAlignmentType::Viewport };
        LayoutProperty<std::string> field { "" };
        LayoutProperty<std::string> font { "Open Sans Regular, Arial Unicode MS Regular" };
        LayoutProperty<float> size { 16.0f };
        LayoutProperty<float> maxWidth { 15.0f /* em */ };
        LayoutProperty<float> lineHeight { 1.2f /* em */ };
        LayoutProperty<float> letterSpacing { 0.0f /* em */ };
        LayoutProperty<TextJustifyType> justify { TextJustifyType::Center };
        LayoutProperty<TextAnchorType> anchor { TextAnchorType::Center };
        LayoutProperty<float> maxAngle { 45.0f /* degrees */ };
        LayoutProperty<float> rotate { 0.0f };
        LayoutProperty<float> padding { 2.0f };
        LayoutProperty<bool> keepUpright { true };
        LayoutProperty<TextTransformType> transform { TextTransformType::None };
        LayoutProperty<std::array<float, 2>> offset { {{ 0, 0 }} };
        LayoutProperty<bool> allowOverlap { false };
        LayoutProperty<bool> ignorePlacement { false };
        LayoutProperty<bool> optional { false };
    } text;

    // Special case.
    float iconMaxSize = 1.0f;
    float textMaxSize = 16.0f;
};

class SymbolPaintProperties {
public:
    class PaintProperties {
    public:
        PaintProperties(float size_) : size(size_) {}

        PaintProperty<float> opacity { 1.0f };
        PaintProperty<Color> color { {{ 0, 0, 0, 1 }} };
        PaintProperty<Color> haloColor { {{ 0, 0, 0, 0 }} };
        PaintProperty<float> haloWidth { 0.0f };
        PaintProperty<float> haloBlur { 0.0f };
        PaintProperty<std::array<float, 2>> translate { {{ 0, 0 }} };
        PaintProperty<TranslateAnchorType> translateAnchor { TranslateAnchorType::Map };

        // Special case
        float size;

        bool isVisible() const {
            return opacity > 0 && (color.value[3] > 0 || haloColor.value[3] > 0) && size > 0;
        }
    };

    PaintProperties icon { 1.0f };
    PaintProperties text { 16.0f };
};

class SymbolLayer : public StyleLayer {
public:
    std::unique_ptr<StyleLayer> clone() const override;

    void parseLayout(const JSValue&) override;
    void parsePaints(const JSValue&) override;

    void cascade(const StyleCascadeParameters&) override;
    bool recalculate(const StyleCalculationParameters&) override;

    std::unique_ptr<Bucket> createBucket(StyleBucketParameters&) const override;

    SymbolLayoutProperties layout;
    SymbolPaintProperties paint;

    SpriteAtlas* spriteAtlas = nullptr;
};

} // namespace mbgl

#endif