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#pragma once
#include "../../conversion/constant.hpp"
#include "../../conversion/conversion.hpp"
#include "geometry.hpp"
#include "../../gson/json_object.hpp"
#include <mbgl/util/feature.hpp>
#include <mapbox/variant.hpp>
#include <mapbox/geometry.hpp>
#include <jni/jni.hpp>
#include "../../jni/local_object.hpp"
#include "../feature.hpp"
#include <string>
#include <array>
#include <vector>
#include <sstream>
#include <mbgl/util/logging.hpp>
namespace mbgl {
namespace android {
namespace conversion {
/**
* Turn feature identifier into std::string
*/
class FeatureIdVisitor {
public:
template<class T>
std::string operator()(const T& i) const {
return std::to_string(i);
}
std::string operator()(const std::string& i) const {
return i;
}
std::string operator()(const std::nullptr_t&) const {
return "";
}
};
/**
* Turn properties into Java GSON JsonObject's
*/
class PropertyValueEvaluator {
public:
jni::JNIEnv& env;
/**
* null
*/
jni::jobject* operator()(const mapbox::geometry::null_value_t &) const {
return (jni::jobject*) nullptr;
}
/**
* Boolean primitive
*/
jni::jobject* operator()(const bool& value) const {
static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonPrimitive")).release();
static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/Boolean;)V");
// Create JsonPrimitive
jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, *convert<jni::jobject*, bool>(env, value));
jni::jobject* object = &jni::NewObject(env, *javaClass, *constructor, *converted);
return object;
}
/**
* String primitive
*/
jni::jobject* operator()(const std::string& value) const {
static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonPrimitive")).release();
static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/String;)V");
// Create JsonPrimitive
jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, *convert<jni::jobject*, std::string>(env, value));
jni::jobject* object = &jni::NewObject(env, *javaClass, *constructor, converted.get());
return object;
}
/**
* Number primitives
*/
template <class Number>
jni::jobject* operator()(const Number& value) const {
static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonPrimitive")).release();
static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/Number;)V");
// Create JsonPrimitive
jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, *convert<jni::jobject*, Number>(env, value));
jni::jobject* object = &jni::NewObject(env, *javaClass, *constructor, converted.get());
return object;
}
/**
* Json Array
*/
jni::jobject* operator()(const std::vector<mbgl::Value> &values) const {
static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonArray")).release();
static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "()V");;
static jni::jmethodID* add = &jni::GetMethodID(env, *javaClass, "add", "(Lcom/google/gson/JsonElement;)V");
// Create json array
jni::jobject* jarray = &jni::NewObject(env, *javaClass, *constructor);
// Add values
for (const auto &v : values) {
jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, mbgl::Value::visit(v, *this));
jni::CallMethod<void>(env, jarray, *add, converted.get());
}
return jarray;
}
/**
* Json Object
*/
jni::jobject* operator()(const std::unordered_map<std::string, mbgl::Value> &value) const {
// TODO: clean up duplication here
static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonObject")).release();
static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "()V");;
static jni::jmethodID* add = &jni::GetMethodID(env, *javaClass, "add", "(Ljava/lang/String;Lcom/google/gson/JsonElement;)V");
// Create json object
jni::jobject* jsonObject = &jni::NewObject(env, *javaClass, *constructor);
// Add items
for (auto &item : value) {
jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, mbgl::Value::visit(item.second, *this));
jni::LocalObject<jni::jobject> key = jni::NewLocalObject(env, *convert<jni::jobject*, std::string>(env, item.first));
jni::CallMethod<void>(env, jsonObject, *add, key.get(), converted.get());
}
return jsonObject;
}
};
template <>
struct Converter<jni::jobject*, std::unordered_map<std::string, mbgl::Value>> {
Result<jni::jobject*> operator()(jni::JNIEnv& env, const std::unordered_map<std::string, mbgl::Value>& value) const {
static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/google/gson/JsonObject")).release();
static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "()V");;
static jni::jmethodID* add = &jni::GetMethodID(env, *javaClass, "add", "(Ljava/lang/String;Lcom/google/gson/JsonElement;)V");
// Create json object
jni::jobject* jsonObject = &jni::NewObject(env, *javaClass, *constructor);
// Add items
PropertyValueEvaluator evaluator {env};
for (auto &item : value) {
jni::LocalObject<jni::jobject> converted = jni::NewLocalObject(env, mbgl::Value::visit(item.second, evaluator));
jni::LocalObject<jni::jobject> key = jni::NewLocalObject(env, *convert<jni::jobject*, std::string>(env, item.first));
jni::CallMethod<void>(env, jsonObject, *add, key.get(), converted.get());
}
return {jsonObject};
}
};
template <>
struct Converter<jni::Object<android::geojson::Feature>, mbgl::Feature> {
Result<jni::Object<android::geojson::Feature>> operator()(jni::JNIEnv& env, const mbgl::Feature& value) const {
// Convert Id
FeatureIdVisitor idEvaluator;
std::string id = (value.id) ? mapbox::geometry::identifier::visit(value.id.value(), idEvaluator) : "";
auto jid = jni::Make<jni::String>(env, id);
// Convert properties
auto properties = jni::Object<gson::JsonObject>(*convert<jni::jobject*>(env, value.properties));
// Convert geometry
auto geometry = *convert<jni::Object<android::geojson::Geometry>>(env, value.geometry);
// Create feature
auto feature = android::geojson::Feature::fromGeometry(env, geometry, properties, jid);
//Cleanup
jni::DeleteLocalRef(env, jid);
jni::DeleteLocalRef(env, geometry);
jni::DeleteLocalRef(env, properties);
return feature;
}
};
template <>
struct Converter<jni::Array<jni::Object<android::geojson::Feature>>, std::vector<mbgl::Feature>> {
Result<jni::Array<jni::Object<android::geojson::Feature>>> operator()(jni::JNIEnv& env, const std::vector<mbgl::Feature>& value) const {
using namespace mbgl::android::geojson;
auto features = jni::Array<jni::Object<Feature>>::New(env, value.size(), Feature::javaClass);
for(size_t i = 0; i < value.size(); i = i + 1) {
auto converted = *convert<jni::Object<android::geojson::Feature>, mbgl::Feature>(env, value.at(i));
features.Set(env, i, converted);
jni::DeleteLocalRef(env, converted);
}
return {features};
}
};
} // namespace conversion
} // namespace android
} // namespace mbgl
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