from datetime import datetime
from pydantic import BaseModel, ConfigDict, Field, HttpUrl

class KnowledgeCreate(BaseModel):
    title: str = Field(min_length=1, max_length=250)
    category: str = Field(default="未分类", max_length=80)
    content: str = Field(min_length=1)
    source_url: HttpUrl | None = None

class KnowledgeRead(BaseModel):
    model_config = ConfigDict(from_attributes=True)
    id: int
    title: str
    category: str
    content: str
    source_url: str | None
    verification_status: str
    created_at: datetime