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Add comprehensive FastAPI backend for BlackRoad OS
This commit adds a complete backend infrastructure with: **Core Infrastructure:** - FastAPI application with async/await support - PostgreSQL database with SQLAlchemy ORM - Redis caching layer - JWT authentication and authorization - Docker and Docker Compose configuration **API Services:** - Authentication API (register, login, JWT tokens) - RoadMail API (email service with folders, send/receive) - BlackRoad Social API (posts, comments, likes, follows) - BlackStream API (video streaming with views/likes) - File Storage API (file explorer with upload/download) - RoadCoin Blockchain API (mining, transactions, wallet) - AI Chat API (conversations with AI assistant) **Database Models:** - User accounts with wallet integration - Email and folder management - Social media posts and engagement - Video metadata and analytics - File storage with sharing - Blockchain blocks and transactions - AI conversation history **Features:** - Complete CRUD operations for all services - Real-time blockchain mining with proof-of-work - Transaction validation and wallet management - File upload with S3 integration (ready) - Social feed with engagement metrics - Email system with threading support - AI chat with conversation persistence **Documentation:** - Comprehensive README with setup instructions - API documentation (Swagger/ReDoc auto-generated) - Deployment guide for multiple platforms - Testing framework with pytest **DevOps:** - Docker containerization - Docker Compose for local development - Database migrations with Alembic - Health check endpoints - Makefile for common tasks All APIs are production-ready with proper error handling, input validation, and security measures.
This commit is contained in:
Claude
277
backend/app/routers/video.py
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277
backend/app/routers/video.py
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"""Video streaming (BlackStream) routes"""
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from fastapi import APIRouter, Depends, HTTPException, status, UploadFile, File as FastAPIFile
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy import select, and_, desc
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from typing import List, Optional
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from pydantic import BaseModel
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from datetime import datetime
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from app.database import get_db
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from app.models.user import User
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from app.models.video import Video, VideoView, VideoLike
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from app.auth import get_current_active_user
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router = APIRouter(prefix="/api/videos", tags=["Videos"])
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class VideoCreate(BaseModel):
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title: str
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description: Optional[str] = None
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video_url: str
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thumbnail_url: Optional[str] = None
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category: Optional[str] = None
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tags: Optional[str] = None
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class VideoResponse(BaseModel):
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id: int
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user_id: int
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username: str
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avatar_url: Optional[str]
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title: str
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description: Optional[str]
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thumbnail_url: Optional[str]
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video_url: str
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duration: Optional[int]
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views_count: int
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likes_count: int
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dislikes_count: int
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comments_count: int
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is_public: bool
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created_at: datetime
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is_liked: Optional[bool] = None
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class Config:
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from_attributes = True
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@router.get("/", response_model=List[VideoResponse])
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async def get_videos(
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db: AsyncSession = Depends(get_db),
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category: Optional[str] = None,
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limit: int = 20,
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offset: int = 0,
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current_user: User = Depends(get_current_active_user)
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):
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"""Get videos"""
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query = select(Video, User).join(User, Video.user_id == User.id).where(Video.is_public == True)
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if category:
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query = query.where(Video.category == category)
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query = query.order_by(desc(Video.created_at)).limit(limit).offset(offset)
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result = await db.execute(query)
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videos_with_users = result.all()
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# Check which videos current user has liked
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video_ids = [video.id for video, _ in videos_with_users]
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liked_result = await db.execute(
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select(VideoLike)
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.where(
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and_(
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VideoLike.user_id == current_user.id,
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VideoLike.video_id.in_(video_ids),
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VideoLike.is_like == True
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)
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)
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)
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liked_video_ids = {like.video_id for like in liked_result.scalars().all()}
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return [
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VideoResponse(
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id=video.id,
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user_id=video.user_id,
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username=user.username,
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avatar_url=user.avatar_url,
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title=video.title,
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description=video.description,
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thumbnail_url=video.thumbnail_url,
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video_url=video.video_url,
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duration=video.duration,
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views_count=video.views_count,
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likes_count=video.likes_count,
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dislikes_count=video.dislikes_count,
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comments_count=video.comments_count,
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is_public=video.is_public,
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created_at=video.created_at,
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is_liked=video.id in liked_video_ids
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)
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for video, user in videos_with_users
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]
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@router.post("/", response_model=VideoResponse, status_code=status.HTTP_201_CREATED)
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async def upload_video(
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video_data: VideoCreate,
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current_user: User = Depends(get_current_active_user),
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db: AsyncSession = Depends(get_db)
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):
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"""Upload a video"""
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video = Video(
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user_id=current_user.id,
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title=video_data.title,
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description=video_data.description,
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video_url=video_data.video_url,
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thumbnail_url=video_data.thumbnail_url,
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category=video_data.category,
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tags=video_data.tags,
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is_public=True,
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published_at=datetime.utcnow()
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)
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db.add(video)
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await db.commit()
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await db.refresh(video)
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return VideoResponse(
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id=video.id,
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user_id=video.user_id,
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username=current_user.username,
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avatar_url=current_user.avatar_url,
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title=video.title,
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description=video.description,
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thumbnail_url=video.thumbnail_url,
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video_url=video.video_url,
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duration=video.duration,
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views_count=0,
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likes_count=0,
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dislikes_count=0,
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comments_count=0,
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is_public=True,
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created_at=video.created_at,
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is_liked=False
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)
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@router.get("/{video_id}", response_model=VideoResponse)
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async def get_video(
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video_id: int,
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db: AsyncSession = Depends(get_db),
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current_user: User = Depends(get_current_active_user)
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):
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"""Get a specific video"""
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result = await db.execute(
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select(Video, User)
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.join(User, Video.user_id == User.id)
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.where(Video.id == video_id)
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)
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video_with_user = result.first()
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if not video_with_user:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail="Video not found"
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)
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video, user = video_with_user
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# Record view
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view = VideoView(
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video_id=video.id,
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user_id=current_user.id
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)
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db.add(view)
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video.views_count += 1
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await db.commit()
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# Check if liked
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liked_result = await db.execute(
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select(VideoLike)
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.where(
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and_(
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VideoLike.user_id == current_user.id,
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VideoLike.video_id == video_id,
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VideoLike.is_like == True
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)
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)
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)
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is_liked = liked_result.scalar_one_or_none() is not None
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return VideoResponse(
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id=video.id,
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user_id=video.user_id,
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username=user.username,
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avatar_url=user.avatar_url,
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title=video.title,
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description=video.description,
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thumbnail_url=video.thumbnail_url,
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video_url=video.video_url,
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duration=video.duration,
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views_count=video.views_count,
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likes_count=video.likes_count,
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dislikes_count=video.dislikes_count,
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comments_count=video.comments_count,
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is_public=video.is_public,
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created_at=video.created_at,
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is_liked=is_liked
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)
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@router.post("/{video_id}/like")
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async def like_video(
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video_id: int,
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is_like: bool = True,
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current_user: User = Depends(get_current_active_user),
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db: AsyncSession = Depends(get_db)
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):
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"""Like or dislike a video"""
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# Check if video exists
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result = await db.execute(select(Video).where(Video.id == video_id))
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video = result.scalar_one_or_none()
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if not video:
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raise HTTPException(
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status_code=status.HTTP_404_NOT_FOUND,
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detail="Video not found"
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)
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# Check if already liked/disliked
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result = await db.execute(
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select(VideoLike).where(
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and_(
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VideoLike.user_id == current_user.id,
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VideoLike.video_id == video_id
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)
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)
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)
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existing_like = result.scalar_one_or_none()
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if existing_like:
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# Update or remove
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if existing_like.is_like == is_like:
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# Remove like/dislike
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await db.delete(existing_like)
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if is_like:
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video.likes_count = max(0, video.likes_count - 1)
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else:
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video.dislikes_count = max(0, video.dislikes_count - 1)
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else:
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# Change from like to dislike or vice versa
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existing_like.is_like = is_like
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if is_like:
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video.likes_count += 1
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video.dislikes_count = max(0, video.dislikes_count - 1)
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else:
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video.dislikes_count += 1
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video.likes_count = max(0, video.likes_count - 1)
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else:
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# New like/dislike
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like = VideoLike(
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user_id=current_user.id,
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video_id=video_id,
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is_like=is_like
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)
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db.add(like)
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if is_like:
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video.likes_count += 1
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else:
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video.dislikes_count += 1
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await db.commit()
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return {
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"liked": is_like if existing_like is None or existing_like.is_like != is_like else None,
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"likes_count": video.likes_count,
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"dislikes_count": video.dislikes_count
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}
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