package ru.dbotthepony.kstarbound.json

import com.google.common.collect.ImmutableList
import com.google.common.collect.ImmutableSet
import com.google.gson.Gson
import com.google.gson.JsonArray
import com.google.gson.JsonElement
import com.google.gson.JsonNull
import com.google.gson.JsonObject
import com.google.gson.JsonPrimitive
import com.google.gson.JsonSyntaxException
import com.google.gson.TypeAdapter
import com.google.gson.TypeAdapterFactory
import com.google.gson.reflect.TypeToken
import com.google.gson.stream.JsonReader
import com.google.gson.stream.JsonToken
import com.google.gson.stream.JsonWriter
import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet

inline fun <reified C : Collection<E>, reified E> Gson.collectionAdapter(): TypeAdapter<C> {
	return getAdapter(TypeToken.getParameterized(C::class.java, E::class.java)) as TypeAdapter<C>
}

inline fun <reified E> Gson.listAdapter(): TypeAdapter<ImmutableList<E>> {
	return collectionAdapter()
}

inline fun <reified A, reified B> Gson.pairAdapter(): TypeAdapter<Pair<A, B>> {
	return getAdapter(TypeToken.getParameterized(Pair::class.java, A::class.java, B::class.java)) as TypeAdapter<Pair<A, B>>
}

inline fun <reified A, reified B> Gson.pairListAdapter(): TypeAdapter<ImmutableList<Pair<A, B>>> {
	return getAdapter(TypeToken.getParameterized(ImmutableList::class.java, TypeToken.getParameterized(Pair::class.java, A::class.java, B::class.java).type)) as TypeAdapter<ImmutableList<Pair<A, B>>>
}

inline fun <reified E> Gson.mutableListAdapter(): TypeAdapter<ArrayList<E>> {
	return collectionAdapter()
}

inline fun <reified E> Gson.setAdapter(): TypeAdapter<ImmutableSet<E>> {
	return collectionAdapter()
}

inline fun <reified A, reified B> Gson.pairSetAdapter(): TypeAdapter<ImmutableSet<Pair<A, B>>> {
	return getAdapter(TypeToken.getParameterized(ImmutableSet::class.java, TypeToken.getParameterized(Pair::class.java, A::class.java, B::class.java).type)) as TypeAdapter<ImmutableSet<Pair<A, B>>>
}

inline fun <reified E> Gson.mutableSetAdapter(): TypeAdapter<ObjectOpenHashSet<E>> {
	return collectionAdapter()
}