src/tts_backend/application/errors.py

from dataclasses import dataclass, field
from typing import Any


class ErrorTypes:
    """Application-level error categories."""

    PARAMETERS_ERROR = "ParametersError"
    TTS_ERROR = "TTSError"
    RESOURCES_ERROR = "ResourceError"
    SYSTEM_ERROR = "SystemError"


@dataclass(frozen=True)
class ErrorDetail:
    code: str
    message: str
    target: str | None = None


@dataclass
class AppError:
    type: str
    code: str
    message: str
    details: list[ErrorDetail] = field(default_factory=list)

    @classmethod
    def from_message(
        cls,
        error_type: str,
        message: Any,
        code: str,
        details: list[ErrorDetail] | None = None,
    ) -> "AppError":
        if isinstance(message, Exception):
            formatted_message = f'{message.__class__.__name__} : "{message}"'
        else:
            formatted_message = str(message)

        return cls(
            type=error_type,
            code=code,
            message=formatted_message,
            details=details or [],
        )

    def __bool__(self) -> bool:
        return False