package json

import (
	luajit "git.sharkk.net/Sky/LuaJIT-to-Go"
	"github.com/goccy/go-json"
)

func GetFunctionList() map[string]luajit.GoFunction {
	return map[string]luajit.GoFunction{
		"json_encode": json_encode,
		"json_decode": json_decode,
	}
}

func json_encode(s *luajit.State) int {
	value, err := s.ToValue(1)
	if err != nil {
		s.PushNil()
		s.PushString("failed to read value")
		return 2
	}

	data, err := json.Marshal(value)
	if err != nil {
		s.PushNil()
		s.PushString("encoding failed")
		return 2
	}

	s.PushString(string(data))
	return 1
}

func json_decode(s *luajit.State) int {
	jsonStr := s.ToString(1)
	var result any
	if err := json.Unmarshal([]byte(jsonStr), &result); err != nil {
		s.PushNil()
		s.PushString("invalid JSON")
		return 2
	}

	s.PushValue(result)
	return 1
}