"""Post schemas for SocialPhoto API."""
from datetime import datetime
from typing import Optional

from pydantic import BaseModel, ConfigDict, Field


class PostCreate(BaseModel):
    """Request model for creating a post."""
    caption: Optional[str] = ""


class PostResponse(BaseModel):
    """Response model for post data."""
    id: int
    user_id: int
    username: str
    image_url: str
    caption: str
    likes_count: int
    dislikes_count: int
    comments_count: int
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class PostDetail(PostResponse):
    """Detailed post response with user info."""
    user: "UserResponse"  # noqa: F821


class CommentCreate(BaseModel):
    """Request model for creating a comment."""
    content: str = Field(..., min_length=1, max_length=500)


class CommentResponse(BaseModel):
    """Response model for comment data."""
    id: int
    post_id: int
    user_id: int
    username: str
    content: str
    likes_count: int
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)