"""Custom exception hierarchy for hf-release."""

from __future__ import annotations


class HFReleaseError(Exception):
    """Base exception for all hf-release errors."""

    exit_code: int = 1

    def __init__(self, message: str, suggestion: str = "") -> None:
        super().__init__(message)
        self.suggestion = suggestion


class AuthenticationError(HFReleaseError):
    """Raised when a token is missing or invalid."""

    exit_code = 2


class RepoNotFoundError(HFReleaseError):
    """Raised when a HF or GitHub repo does not exist."""

    exit_code = 3


class TagConflictError(HFReleaseError):
    """Raised when a tag already exists with a different SHA."""

    exit_code = 4


class ModelCardSyncError(HFReleaseError):
    """Raised when reading or pushing a model card fails."""

    exit_code = 5


class UploadError(HFReleaseError):
    """Raised when uploading model weights to HF Hub fails."""

    exit_code = 6


class ReleaseCreationError(HFReleaseError):
    """Raised when creating a GitHub release fails."""

    exit_code = 7


class ValidationError(HFReleaseError):
    """Raised for bad input (invalid version string, missing path, etc.)."""

    exit_code = 8