208 lines
6.7 KiB
Python
208 lines
6.7 KiB
Python
"""Story related APIs."""
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import asyncio
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import json
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import uuid
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from typing import AsyncGenerator
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from fastapi import APIRouter, Depends, HTTPException, Request, Response
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from sse_starlette.sse import EventSourceResponse
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.core.deps import require_user
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from app.core.logging import get_logger
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from app.core.rate_limiter import check_rate_limit
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from app.db.database import get_db
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from app.db.models import User
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from app.schemas.story_schemas import (
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GenerateRequest,
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StoryResponse,
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FullStoryResponse,
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StorybookRequest,
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StorybookResponse,
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StoryListItem,
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AchievementItem,
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)
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from app.services import story_service
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from app.services.memory_service import build_enhanced_memory_context
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from app.services.provider_router import (
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generate_story_content,
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generate_image,
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)
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logger = get_logger(__name__)
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router = APIRouter()
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RATE_LIMIT_WINDOW = 60 # seconds
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RATE_LIMIT_REQUESTS = 10
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@router.post("/stories/generate", response_model=StoryResponse)
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async def generate_story(
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request: GenerateRequest,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Generate or enhance a story."""
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await check_rate_limit(f"story:{user.id}", RATE_LIMIT_REQUESTS, RATE_LIMIT_WINDOW)
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return await story_service.generate_and_save_story(request, user.id, db)
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@router.post("/stories/generate/full", response_model=FullStoryResponse)
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async def generate_story_full(
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request: GenerateRequest,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Generate complete story (story + parallel image/audio generation)."""
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await check_rate_limit(f"story:{user.id}", RATE_LIMIT_REQUESTS, RATE_LIMIT_WINDOW)
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return await story_service.generate_full_story_service(request, user.id, db)
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@router.post("/stories/generate/stream")
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async def generate_story_stream(
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request: GenerateRequest,
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req: Request,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""流式生成故事（SSE）。"""
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await check_rate_limit(f"story:{user.id}", RATE_LIMIT_REQUESTS, RATE_LIMIT_WINDOW)
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# Validation
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profile_id, universe_id = await story_service.validate_profile_and_universe(
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request.child_profile_id, request.universe_id, user.id, db
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)
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# Build Context
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memory_context = await build_enhanced_memory_context(profile_id, universe_id, db)
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async def event_generator() -> AsyncGenerator[dict, None]:
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story_id = str(uuid.uuid4())
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yield {"event": "started", "data": json.dumps({"story_id": story_id})}
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# Step 1: Generate Content
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try:
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result = await generate_story_content(
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input_type=request.type,
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data=request.data,
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education_theme=request.education_theme,
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memory_context=memory_context,
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db=db,
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)
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except Exception as e:
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logger.error("sse_story_generation_failed", error=str(e))
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yield {"event": "story_failed", "data": json.dumps({"error": str(e)})}
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return
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# Save Story
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story = await story_service.create_story_from_result(
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result, user.id, profile_id, universe_id, db
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)
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yield {
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"event": "story_ready",
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"data": json.dumps({
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"id": story.id,
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"title": story.title,
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"content": story.story_text,
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"cover_prompt": story.cover_prompt,
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"mode": story.mode,
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"child_profile_id": story.child_profile_id,
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"universe_id": story.universe_id,
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}),
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}
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# Step 2: Generate Image
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if story.cover_prompt:
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try:
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# Direct call to provider router's generate_image, sharing db session
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image_url = await generate_image(story.cover_prompt, db=db)
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story.image_url = image_url
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await db.commit()
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yield {"event": "image_ready", "data": json.dumps({"image_url": image_url})}
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except Exception as e:
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logger.warning("sse_image_generation_failed", story_id=story.id, error=str(e))
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yield {"event": "image_failed", "data": json.dumps({"error": str(e)})}
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yield {"event": "complete", "data": json.dumps({"story_id": story.id})}
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return EventSourceResponse(event_generator())
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@router.post("/storybook/generate", response_model=StorybookResponse)
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async def generate_storybook_api(
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request: StorybookRequest,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Generate storybook."""
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await check_rate_limit(f"story:{user.id}", RATE_LIMIT_REQUESTS, RATE_LIMIT_WINDOW)
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return await story_service.generate_storybook_service(request, user.id, db)
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# ==================== Missing Endpoints (Issue #5) ====================
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@router.get("/stories", response_model=list[StoryListItem])
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async def list_stories(
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limit: int = 20,
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offset: int = 0,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""List stories."""
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return await story_service.list_stories(user.id, limit, offset, db)
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@router.get("/stories/{story_id}", response_model=StoryResponse)
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async def get_story(
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story_id: int,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Get story detail."""
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return await story_service.get_story_detail(story_id, user.id, db)
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@router.delete("/stories/{story_id}")
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async def delete_story(
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story_id: int,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Delete story."""
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await story_service.delete_story(story_id, user.id, db)
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return {"message": "Deleted"}
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@router.post("/image/generate/{story_id}")
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async def generate_story_image(
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story_id: int,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Generate cover image for story."""
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url = await story_service.generate_story_cover(story_id, user.id, db)
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return {"image_url": url}
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@router.get("/audio/{story_id}")
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async def get_story_audio(
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story_id: int,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Get story audio (MP3)."""
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audio_bytes = await story_service.generate_story_audio(story_id, user.id, db)
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return Response(content=audio_bytes, media_type="audio/mpeg")
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@router.get("/stories/{story_id}/achievements", response_model=list[AchievementItem])
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async def get_story_achievements(
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story_id: int,
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user: User = Depends(require_user),
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db: AsyncSession = Depends(get_db),
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):
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"""Get story achievements."""
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return await story_service.get_story_achievements(story_id, user.id, db)
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