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import pyarrow as pa

from abc import ABC, abstractmethod
from pypaimon.api import ReadBuilder, BatchWriteBuilder
from typing import Optional, List


class Table(ABC):
    """A table provides basic abstraction for table read and write."""

    @abstractmethod
    def new_read_builder(self) -> ReadBuilder:
        """Return a builder for building table scan and table read."""

    @abstractmethod
    def new_batch_write_builder(self) -> BatchWriteBuilder:
        """Returns a builder for building batch table write and table commit."""


class Schema:
    """Schema of a table."""

    def __init__(self,
                 pa_schema: pa.Schema,
                 partition_keys: Optional[List[str]] = None,
                 primary_keys: Optional[List[str]] = None,
                 options: Optional[dict] = None,
                 comment: Optional[str] = None):
        self.pa_schema = pa_schema
        self.partition_keys = partition_keys
        self.primary_keys = primary_keys
        self.options = options
        self.comment = comment