from rest_framework.renderers import JSONRenderer
import json


class UTF8JSONRenderer(JSONRenderer):
    """
    JSON renderer that preserves UTF-8 characters (like emojis) instead of escaping them.
    """

    charset = "utf-8"

    def render(self, data, accepted_media_type=None, renderer_context=None):
        if data is None:
            return bytes()

        renderer_context = renderer_context or {}
        indent = self.get_indent(accepted_media_type, renderer_context)

        if indent is None:
            separators = (",", ":")
        else:
            separators = (",", ": ")

        ret = json.dumps(data, ensure_ascii=False, indent=indent, separators=separators)

        # Handle invalid surrogate characters by using 'surrogatepass' error handler
        return ret.encode("utf-8", errors="surrogatepass")