#!/usr/bin/env python3
"""
#exonware/xwschema/src/exonware/xwschema/operations/schema_transformer.py
Schema Transformer (Optional BaaS Feature)
Provides format-specific schema transformations and optimizations.
Company: eXonware.com
Author: eXonware Backend Team
Email: connect@exonware.com
Version: 0.4.0.6
Generation Date: 26-Jan-2026
NOTE: This is an OPTIONAL module for BaaS platform integration.
"""

from typing import Any
from exonware.xwsystem import get_logger
from ..defs import SchemaFormat
from ..errors import XWSchemaFormatError
from ..engine import XWSchemaEngine
logger = get_logger(__name__)


class SchemaTransformer:
    """
    Schema transformer for format-specific transformations.
    Provides transformations and optimizations for schemas within the same format
    or across formats. Reuses XWSchemaEngine for all transformations.
    This is an optional BaaS feature.
    """

    def __init__(self):
        """Initialize schema transformer."""
        self._engine = XWSchemaEngine()

    async def transform(
        self,
        schema: dict[str, Any],
        format: SchemaFormat,
        **opts
    ) -> dict[str, Any]:
        """
        Transform schema within the same format.
        Args:
            schema: Schema definition to transform
            format: Schema format
            **opts: Transformation options
        Returns:
            Transformed schema definition
        """
        # For now, transformations are handled by the engine's conversion logic
        # This is a placeholder for future format-specific optimizations
        # (e.g., JSON Schema normalization, OpenAPI restructuring)
        return schema

    async def optimize(
        self,
        schema: dict[str, Any],
        format: SchemaFormat,
        **opts
    ) -> dict[str, Any]:
        """
        Optimize schema structure for better performance or readability.
        Args:
            schema: Schema definition to optimize
            format: Schema format
            **opts: Optimization options
        Returns:
            Optimized schema definition
        """
        # Placeholder for future optimization logic
        # (e.g., remove redundant constraints, merge duplicate definitions)
        return schema
__all__ = ['SchemaTransformer']
