#pragma once

#include <mbgl/renderer/query.hpp>
#include <mbgl/annotation/annotation.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/geojson.hpp>

#include <functional>
#include <memory>
#include <string>
#include <vector>

namespace mbgl {

class RendererObserver;
class RenderedQueryOptions;
class SourceQueryOptions;
class UpdateParameters;

namespace gfx {
class RendererBackend;
} // namespace gfx

struct PlacedSymbolData {
    // Contents of the label
    std::u16string key;
    // If symbol contains text, text collision box in viewport coordinates
    optional<mapbox::geometry::box<float>> textCollisionBox;
    // If symbol contains icon, icon collision box in viewport coordinates
    optional<mapbox::geometry::box<float>> iconCollisionBox;
    // Symbol text was placed
    bool textPlaced;
    // Symbol icon was placed
    bool iconPlaced;
    // Symbol text or icon collision box intersects tile borders
    bool intersectsTileBorder;
    // Viewport padding ({viewportPadding, viewportPadding} is a coordinate of the tile's top-left corner)
    float viewportPadding;
    // Layer id (leader of the symbol layout group)
    std::string layer;
};

class Renderer {
public:
    Renderer(gfx::RendererBackend&, float pixelRatio_, const optional<std::string>& localFontFamily = {});
    ~Renderer();

    void markContextLost();

    void setObserver(RendererObserver*);

    void render(const std::shared_ptr<UpdateParameters>&);

    // Feature queries
    std::vector<Feature> queryRenderedFeatures(const ScreenLineString&, const RenderedQueryOptions& options = {}) const;
    std::vector<Feature> queryRenderedFeatures(const ScreenCoordinate& point, const RenderedQueryOptions& options = {}) const;
    std::vector<Feature> queryRenderedFeatures(const ScreenBox& box, const RenderedQueryOptions& options = {}) const;
    std::vector<Feature> querySourceFeatures(const std::string& sourceID, const SourceQueryOptions& options = {}) const;
    AnnotationIDs queryPointAnnotations(const ScreenBox& box) const;
    AnnotationIDs queryShapeAnnotations(const ScreenBox& box) const;
    AnnotationIDs getAnnotationIDs(const std::vector<Feature>&) const;

    // Feature extension query
    FeatureExtensionValue queryFeatureExtensions(const std::string& sourceID,
                                                 const Feature& feature,
                                                 const std::string& extension,
                                                 const std::string& extensionField,
                                                 const optional<std::map<std::string, Value>>& args = {}) const;

    void setFeatureState(const std::string& sourceID, const optional<std::string>& sourceLayerID,
                         const std::string& featureID, const FeatureState& state);

    void getFeatureState(FeatureState& state,
                         const std::string& sourceID,
                         const optional<std::string>& sourceLayerID,
                         const std::string& featureID) const;

    void removeFeatureState(const std::string& sourceID,
                            const optional<std::string>& sourceLayerID,
                            const optional<std::string>& featureID,
                            const optional<std::string>& stateKey);

    // Debug
    void dumpDebugLogs();

    /**
     * @brief In Tile map mode, enables or disables collecting of the placed symbols data,
     * which can be obtained with `getPlacedSymbolsData()`.
     *
     * The placed symbols data collecting is disabled by default.
     */
    void collectPlacedSymbolData(bool enable);

    /**
     * @brief If collecting of the placed symbols data is enabled, returns the reference
     * to the `PlacedSymbolData` vector holding the collected data.
     *
     * Note: the returned vector gets re-populated at every `render()` call.
     *
     * @return collected placed symbols data
     */
    const std::vector<PlacedSymbolData>& getPlacedSymbolsData() const;

    // Memory
    void reduceMemoryUse();
    void clearData();

private:
    class Impl;
    std::unique_ptr<Impl> impl;
};

} // namespace mbgl