plugin

class Loader(LoaderPlugin):
    hosts = ["tvpaint"]
    settings_category = "tvpaint"

    @staticmethod
    def get_members_from_container(container):
        if "members" not in container and "objectName" in container:
            # Backwards compatibility
            layer_ids_str = container.get("objectName")
            return [
                int(layer_id) for layer_id in layer_ids_str.split("|")
            ]
        return container["members"]

    def get_unique_layer_name(self, namespace, name):
        """Layer name with counter as suffix.

        Find higher 3 digit suffix from all layer names in scene matching regex
        `{namespace}_{name}_{suffix}`. Higher 3 digit suffix is used
        as base for next number if scene does not contain layer matching regex
        `0` is used ase base.

        Args:
            namespace (str): Usually folder name.
            name (str): Name of loaded product.

        Returns:
            str: `{namespace}_{name}_{higher suffix + 1}`
        """
        layer_name_base = "{}_{}".format(namespace, name)

        counter_regex = re.compile(r"_(\d{3})$")

        higher_counter = 0
        for layer in get_layers_data():
            layer_name = layer["name"]
            if not layer_name.startswith(layer_name_base):
                continue
            number_subpart = layer_name[len(layer_name_base):]
            groups = counter_regex.findall(number_subpart)
            if len(groups) != 1:
                continue

            counter = int(groups[0])
            if counter > higher_counter:
                higher_counter = counter
                continue

        return "{}_{:0>3d}".format(layer_name_base, higher_counter + 1)