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import curl_cffi
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel
import os
import uvicorn
# Load Gemini API key from secret
GEM_API_KEY = os.getenv('GEMINI_API_KEY')
# Init app
app = FastAPI()
# CORS (allow frontend)
app.add_middleware(
CORSMiddleware,
allow_origins=["*"], # Optional: restrict in prod
allow_methods=["*"],
allow_headers=["*"],
)
# Request model
class PromptRequest(BaseModel):
structure_name: str
structure_desc: str
blocks_allowed: list[str] # Enforce lowercase block names client-side
@app.post("/generate_structure")
async def generate_with_gemini(req: PromptRequest):
try:
# Compose the extremely strict prompt
prompt = f"""You are a Minecraft-style structure planner. You have the curiosity to build almost anything you could think of. {req.structure_name}
{req.structure_desc}
Only output a JSON object describing a 3D structure using this format:
{{
"width": <int>,
"height": <int>,
"depth": <int>,
"layers": [
[
["stone", "stone", "stone"],
["stone", "air", "stone"],
["stone", "stone", "stone"]
],
...
]
}}
Only use lowercase Minecraft block IDs (e.g. "stone", "air", "glass", "planks").
You could only build this structure using {" ".join(req.blocks_allowed)}
Do not include any natural language or explanation.
Output strictly valid JSON only."""
# Call Gemini API using curl_cffi
session = curl_cffi.Session(impersonate="chrome110") # Optional impersonation
response = session.post(
url="https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent",
headers={
"x-goog-api-key": GEM_API_KEY,
"Content-Type": "application/json"
},
json={
"contents": [{
"parts": [{
"text": prompt
}]
}]
}
)
return {"response": response.text}
except Exception as e:
return {"error": str(e)}
if __name__ == "__main__":
uvicorn.run(app, host="0.0.0.0", port=7860) |