from pydantic import BaseModel, Field
from typing import Dict, List, Optional
from datetime import datetime
import structlog

logger = structlog.get_logger(__name__)

class FileEntry(BaseModel):
    path: str                    # относительный путь (mods/jei.jar)
    hash: str                    # sha256
    size: int
    added_at: datetime
    modified_at: datetime

class PackMeta(BaseModel):
    pack_name: str
    version: int = 1
    updated_at: datetime = Field(default_factory=datetime.utcnow)

    files: Dict[str, FileEntry] = Field(default_factory=dict)
    ignored_dirs: List[str] = Field(
        default_factory=lambda: [
            "resourcepacks", "shaderpacks", "saves", "logs",
            "crash-reports", "screenshots", "journeymap", "config"
        ]
    )

    minecraft_version: str
    loader_type: str
    loader_version: Optional[str] = None
    asset_index: Optional[str] = None