from enum import Enum

import yaml
from pydantic import BaseModel


class ParserType(str, Enum):
    """Parser type enumeration."""

    UNSTRUCTURED = "unstructured"
    LLAMA_PARSER = "llama_parser"
    MEGAPARSE_VISION = "megaparse_vision"


class StrategyEnum(str, Enum):
    """Method to use for the conversion"""

    FAST = "fast"
    AUTO = "auto"
    HI_RES = "hi_res"


class MegaparseBaseConfig(BaseModel):
    @classmethod
    def from_yaml(cls, file_path: str):
        # Load the YAML file
        with open(file_path, "r") as stream:
            config_data = yaml.safe_load(stream)

        # Instantiate the class using the YAML data
        return cls(**config_data)


class MegaparseConfig(MegaparseBaseConfig):
    method: ParserType = ParserType.UNSTRUCTURED
    strategy: StrategyEnum = StrategyEnum.FAST
    check_table: bool = False
    parsing_instruction: str | None = None
    model_name: str = "gpt-4o"