from __future__ import annotations

from fastapi import FastAPI
from pydantic import BaseModel
from typing import List, Dict

from .contracts import Signal
from .analytics import Aggregator

app = FastAPI(title="MercuryMesh MVP API")


class SignalDTO(BaseModel):
    venue: str
    timestamp: int
    metrics: Dict[str, float]
    version: int = 1


@app.post("/signals/aggregate")
def aggregate_signals(signals: List[SignalDTO]):
    # Convert to internal Signal objects for aggregation
    objs = [Signal(venue=s.venue, timestamp=s.timestamp, metrics=s.metrics, version=s.version) for s in signals]
    result = Aggregator.aggregate_signals(objs)
    return {"aggregation": result}