apix/backend/routers/meta.py
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v3.0.0: Add FastAPI backend
- Add Python FastAPI backend with Pydantic validation
- Port WhiskClient and MetaAIClient to Python
- Create API routers for all endpoints
- Add Swagger/ReDoc documentation at /docs
- Update Dockerfile for multi-service container
- Add lib/api.ts frontend client
- Update README for V3
2026-01-13 07:46:32 +07:00

122 lines
4.1 KiB
Python

"""
Meta AI Router - Meta AI image and video generation
"""
from fastapi import APIRouter, HTTPException
from models.requests import MetaGenerateRequest, MetaVideoRequest
from models.responses import MetaGenerateResponse, MetaImageResult, MetaVideoResponse, MetaVideoResult, ErrorResponse
from services.meta_client import MetaAIClient
import json
router = APIRouter(prefix="/meta", tags=["Meta AI"])
@router.post(
"/generate",
response_model=MetaGenerateResponse,
responses={
400: {"model": ErrorResponse},
401: {"model": ErrorResponse},
422: {"model": ErrorResponse}
}
)
async def meta_generate(request: MetaGenerateRequest):
"""
Generate images using Meta AI's Imagine model.
- **prompt**: Text description of the image to generate
- **cookies**: Meta AI cookies (optional if using free wrapper)
- **imageCount**: Number of images to generate (1-4)
- **aspectRatio**: portrait, landscape, or square
- **useMetaFreeWrapper**: Use free API wrapper instead of direct Meta AI
- **metaFreeWrapperUrl**: URL of the free wrapper service
"""
# Only check for cookies if NOT using free wrapper
if not request.useMetaFreeWrapper and not request.cookies:
raise HTTPException(
status_code=401,
detail="Meta AI cookies required. Configure in Settings or use Free Wrapper."
)
print(f"[Meta AI Route] Generating images for: \"{request.prompt[:30]}...\" ({request.aspectRatio})")
# Diagnostic: Check cookie count
if request.cookies:
try:
cookies = request.cookies.strip()
if cookies.startswith('['):
parsed = json.loads(cookies)
count = len(parsed) if isinstance(parsed, list) else 0
else:
count = len(cookies.split(';'))
print(f"[Meta AI Route] Received {count} cookies (Free Wrapper: {request.useMetaFreeWrapper})")
except:
print(f"[Meta AI Route] Cookie format: {type(request.cookies)}")
try:
client = MetaAIClient(
cookies=request.cookies or "",
use_free_wrapper=request.useMetaFreeWrapper,
free_wrapper_url=request.metaFreeWrapperUrl or "http://localhost:8000"
)
results = await client.generate(
request.prompt,
request.imageCount,
request.aspectRatio
)
# Download images as base64 for storage
images = []
for img in results:
base64_data = img.data
if not base64_data and img.url:
try:
base64_data = await client.download_as_base64(img.url)
except Exception as e:
print(f"[Meta AI Route] Failed to download image: {e}")
images.append(MetaImageResult(
data=base64_data or "",
url=img.url,
prompt=img.prompt,
model=img.model,
aspectRatio="1:1"
))
valid_images = [img for img in images if img.data or img.url]
if not valid_images:
raise HTTPException(status_code=422, detail="No valid images generated")
return MetaGenerateResponse(success=True, images=valid_images)
except Exception as e:
print(f"[Meta AI Route] Error: {e}")
raise HTTPException(status_code=422, detail=str(e))
@router.post(
"/video",
response_model=MetaVideoResponse,
responses={
400: {"model": ErrorResponse},
401: {"model": ErrorResponse},
500: {"model": ErrorResponse}
}
)
async def meta_video(request: MetaVideoRequest):
"""
Generate video from text prompt using Meta AI's Kadabra engine.
- **prompt**: Text description for video generation
- **cookies**: Meta AI cookies
- **aspectRatio**: portrait, landscape, or square
"""
# Note: Meta AI video generation via GraphQL is complex
# This is a placeholder - the full implementation would require
# porting the entire meta/video/route.ts logic
raise HTTPException(
status_code=501,
detail="Meta AI video generation not yet implemented in FastAPI backend"
)