from pydantic import BaseModel, ConfigDict
from typing import Optional
from datetime import datetime
from uuid import UUID


class ShareBase(BaseModel):
    """Base share schema with common attributes."""
    access_level: str  # 'read_only', 'edit', 'guest_read_only'
    requires_auth: bool = True
    expires_at: Optional[datetime] = None


class ShareCreate(ShareBase):
    """Schema for creating a new share link."""
    pass


class ShareUpdate(BaseModel):
    """Schema for updating share information."""
    access_level: Optional[str] = None
    requires_auth: Optional[bool] = None
    expires_at: Optional[datetime] = None


class ShareResponse(ShareBase):
    """Response schema for share data."""
    id: UUID
    map_id: UUID
    share_token: str
    created_at: datetime
    created_by: Optional[UUID] = None

    model_config = ConfigDict(from_attributes=True)


class ShareValidateResponse(BaseModel):
    """Response schema for share token validation."""
    valid: bool
    access_level: Optional[str] = None
    map_id: Optional[UUID] = None
    requires_auth: bool = False
    expired: bool = False