"""
Core JSON parser implementation using WebAssembly SIMD
"""
from typing import Any, Optional, Union
from wasmer import Store, Module, Instance
import os

from .exceptions import JSONParseError
from ..utils.simd_detection import has_simd_support

class JSONParser:
    """
    High-performance JSON parser using WebAssembly SIMD optimizations
    """
    def __init__(
        self,
        use_simd: bool = True,
        validate_utf8: bool = True,
        max_depth: int = 32
    ):
        self.use_simd = use_simd and has_simd_support()
        self.validate_utf8 = validate_utf8
        self.max_depth = max_depth
        self._instance = self._initialize_wasm()

    def _initialize_wasm(self) -> Instance:
        """Initialize the WebAssembly module"""
        store = Store()
        module_path = os.path.join(
            os.path.dirname(__file__),
            "wasm",
            "simd.wasm" if self.use_simd else "fallback.wasm"
        )
        
        with open(module_path, "rb") as f:
            module = Module(store, f.read())
            return Instance(module)

    def parse(self, json_str: str) -> Any:
        """
        Parse a JSON string into Python objects
        
        Args:
            json_str: JSON string to parse
            
        Returns:
            Parsed Python object
            
        Raises:
            JSONParseError: If parsing fails
        """
        try:
            # TODO: Implement actual parsing logic using WASM
            return self._instance.exports.parse(json_str)
        except Exception as e:
            raise JSONParseError(str(e))

def loads(s: Union[str, bytes], **kwargs) -> Any:
    """
    Parse a JSON string
    
    This is a convenience function that wraps JSONParser
    
    Args:
        s: JSON string to parse
        **kwargs: Additional arguments to pass to JSONParser
        
    Returns:
        Parsed Python object
    """
    parser = JSONParser(**kwargs)
    return parser.parse(s if isinstance(s, str) else s.decode('utf-8'))

def dumps(obj: Any) -> str:
    """
    Serialize object to JSON string
    
    Note: This is currently just a wrapper around json.dumps
    Future versions will implement high-performance serialization
    
    Args:
        obj: Python object to serialize
        
    Returns:
        JSON string
    """
    import json
    return json.dumps(obj)
