from fastapi import FastAPI, Request
from fastapi.responses import HTMLResponse
from fastapi.staticfiles import StaticFiles
from fastapi.templating import Jinja2Templates
import chess

app = FastAPI()
app.mount("/static", StaticFiles(directory="static"), name="static")
templates = Jinja2Templates(directory="templates")

@app.get("/")
def read_root(request: Request):
    return templates.TemplateResponse("index.html", {"request": request})

@app.post("/search")
async def search(data: dict):
    board = chess.Board(data['fen'])
    return {
        "fen": data['fen'],
        "valid": board.is_valid(),
        "turn": "white" if board.turn else "black",
        "legal_moves": len(list(board.legal_moves)),
        "ascii": str(board)
    }