export const dynamic = 'force-dynamic';
import { NextResponse } from "next/server";

function getWeatherCode(desc: string): string {
  const d = desc.toLowerCase();
  if (d.includes("overcast")) return "122";
  if (d.includes("partly cloudy") || d.includes("partly") ) return "116";
  if (d.includes("cloudy") || d.includes("cloud")) return "119";
  if (d.includes("drizzle")) return "185";
  if (d.includes("rain") || d.includes("shower")) return "305";
  if (d.includes("snow") || d.includes("blizzard")) return "230";
  if (d.includes("thunder") || d.includes("storm")) return "200";
  if (d.includes("fog") || d.includes("mist")) return "248";
  if (d.includes("sunny") || d.includes("clear")) return "113";
  return "116";
}

export async function GET() {
  try {
    const controller = new AbortController();
    const timeout = setTimeout(() => controller.abort(), 8000);

    const res = await fetch(
      "https://wttr.in/Saint+Petersburg?format=j1",
      {
        signal: controller.signal,
        cache: "no-store",
        headers: {
          "User-Agent": "SmartHomeDashboard/1.0",
          "Accept": "application/json",
        },
      }
    );
    clearTimeout(timeout);

    if (!res.ok) throw new Error(`wttr responded ${res.status}`);
    const data = await res.json();

    const current = data.current_condition[0];
    const days = (data.weather || []).slice(0, 3).map((day: any) => {
      const hourly = day.hourly?.[4] || day.hourly?.[0] || {};
      const desc = hourly.weatherDesc?.[0]?.value || "";
      const code = hourly.weatherCode || getWeatherCode(desc);
      return {
        date: day.date,
        maxTemp: day.maxtempC,
        minTemp: day.mintempC,
        desc,
        weatherCode: String(code),
      };
    });

    return NextResponse.json({
      temp: current.temp_C,
      feelsLike: current.FeelsLikeC,
      humidity: current.humidity,
      desc: current.weatherDesc[0]?.value || "",
      weatherCode: String(current.weatherCode),
      windSpeed: current.windspeedKmph,
      forecast: days,
    });
  } catch (e) {
    console.error("Weather fetch error:", e);
    return NextResponse.json(
      {
        temp: "—",
        feelsLike: "—",
        humidity: "—",
        desc: "Нет данных",
        weatherCode: "116",
        windSpeed: "—",
        forecast: [],
        error: String(e),
      },
      { status: 200 }
    );
  }
}