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#
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from dataclasses import dataclass, field
from typing import List

from dataclasses_json import config

from gravitino.dto.requests.model_version_update_request import (
    ModelVersionUpdateRequest,
)
from gravitino.rest.rest_message import RESTRequest


@dataclass
class ModelVersionUpdatesRequest(RESTRequest):
    """Represents a collection of model Version update operations to be applied atomically."""

    _updates: List[ModelVersionUpdateRequest] = field(
        metadata=config(field_name="updates"), default_factory=list
    )

    def __init__(self, updates: List[ModelVersionUpdateRequest] = None):
        self._updates = updates

    def validate(self):
        """Validates the update requests.
        Raises:
            ValueError: If the updates list is empty or contains invalid requests.
        """
        if not self._updates:
            raise ValueError("At least one model update must be specified")

        for update in self._updates:
            update.validate()
