TASK-001: Setup FastAPI project structure

- Fixed main.py to include all route routers (posts, users, comments, feed)
- Renamed app/models.py to app/schemas.py and split into proper schema modules
- Fixed schema imports in routes
- Updated app/models/__init__.py to properly export SQLAlchemy models
- Fixed database imports in route files
- App imports and runs correctly

app/schemas/__init__.py

@@ -6,4 +6,24 @@ from app.schemas.auth import (
     UserResponse,
 )
 
-__all__ = ["Token", "UserLogin", "UserRegister", "UserResponse"]
+# Post schemas
+from app.schemas.post import CommentCreate, CommentResponse, PostResponse
+
+# User schemas
+from app.schemas.user import UserBase, UserStats
+
+# Feed schemas
+from app.schemas.feed import FeedResponse
+
+__all__ = [
+    "Token",
+    "UserLogin",
+    "UserRegister",
+    "UserResponse",
+    "CommentCreate",
+    "CommentResponse",
+    "PostResponse",
+    "UserBase",
+    "UserStats",
+    "FeedResponse",
+]

app/schemas/feed.py

@@ -0,0 +1,14 @@
+"""Feed schemas for SocialPhoto API."""
+from typing import List
+
+from pydantic import BaseModel
+
+from app.schemas.post import PostResponse
+
+
+class FeedResponse(BaseModel):
+    """Response model for feed."""
+    posts: List[PostResponse]
+    total: int
+    limit: int
+    offset: int

app/schemas/post.py

@@ -0,0 +1,48 @@
+"""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)

app/schemas/user.py

@@ -0,0 +1,20 @@
+"""User schemas for SocialPhoto API."""
+from datetime import datetime
+from typing import Optional
+
+from pydantic import BaseModel, ConfigDict
+
+
+class UserBase(BaseModel):
+    """Base user model."""
+    username: str
+    email: str
+    avatar_url: Optional[str] = "/static/default-avatar.png"
+    bio: Optional[str] = ""
+
+
+class UserStats(BaseModel):
+    """User statistics model."""
+    posts_count: int
+    followers_count: int
+    following_count: int