package nixmsg

import (
	"bytes"
	"encoding/json"
	"io"
)

func marshalJSON(v any) ([]byte, error) {
	var buf bytes.Buffer
	enc := json.NewEncoder(&buf)
	enc.SetEscapeHTML(false)
	if err := enc.Encode(v); err != nil {
		return nil, err
	}
	b := buf.Bytes()
	if n := len(b); n > 0 && b[n-1] == '\n' {
		b = b[:n-1]
	}
	return b, nil
}

func unmarshalJSON(data []byte, v any) error {
	dec := json.NewDecoder(bytes.NewReader(data))
	dec.UseNumber()
	return dec.Decode(v)
}

func writeJSON(w io.Writer, v any) error {
	b, err := marshalJSON(v)
	if err != nil {
		return err
	}
	_, err = w.Write(b)
	return err
}