package ru.dbotthepony.kstarbound.lua.bindings

import org.classdump.luna.ByteString
import org.classdump.luna.LuaRuntimeException
import org.classdump.luna.TableFactory
import org.classdump.luna.impl.NonsuspendableFunctionException
import org.classdump.luna.runtime.AbstractFunction1
import org.classdump.luna.runtime.ExecutionContext
import ru.dbotthepony.kstarbound.Starbound
import ru.dbotthepony.kstarbound.lua.from

class AssetJsonFunction(private val tables: TableFactory) : AbstractFunction1<ByteString>() {
	override fun resume(context: ExecutionContext?, suspendedState: Any?) {
		throw NonsuspendableFunctionException(this::class.java)
	}

	override fun invoke(context: ExecutionContext, arg1: ByteString?) {
		arg1 ?: throw LuaRuntimeException("bad argument #1 to root.assetJson (string expected, got nil)")
		val load = Starbound.loadJsonAsset(arg1.decode())

		if (load == null) {
			context.returnBuffer.setTo()
		} else {
			context.returnBuffer.setTo(tables.from(load))
		}
	}
}