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from dataclasses import dataclass
from typing import Optional

from pypaimon.common.json_util import json_field, optional_json_field

BATCH_COMMIT_IDENTIFIER = 0x7fffffffffffffff


@dataclass
class Snapshot:
    # Required fields
    version: int = json_field("version")
    id: int = json_field("id")
    schema_id: int = json_field("schemaId")
    base_manifest_list: str = json_field("baseManifestList")
    delta_manifest_list: str = json_field("deltaManifestList")
    total_record_count: int = json_field("totalRecordCount")
    delta_record_count: int = json_field("deltaRecordCount")
    commit_user: str = json_field("commitUser")
    commit_identifier: int = json_field("commitIdentifier")
    commit_kind: str = json_field("commitKind")
    time_millis: int = json_field("timeMillis")
    # Optional fields with defaults
    base_manifest_list_size: Optional[int] = optional_json_field("baseManifestListSize", "non_null")
    delta_manifest_list_size: Optional[int] = optional_json_field("deltaManifestListSize", "non_null")
    changelog_manifest_list: Optional[str] = optional_json_field("changelogManifestList", "non_null")
    changelog_manifest_list_size: Optional[int] = optional_json_field("changelogManifestListSize", "non_null")
    index_manifest: Optional[str] = optional_json_field("indexManifest", "non_null")
    changelog_record_count: Optional[int] = optional_json_field("changelogRecordCount", "non_null")
    watermark: Optional[int] = optional_json_field("watermark", "non_null")
    statistics: Optional[str] = optional_json_field("statistics", "non_null")
    next_row_id: Optional[int] = optional_json_field("nextRowId", "non_null")
    properties: Optional[dict] = optional_json_field("properties", "non_null")
