import { NextResponse } from "next/server";
import type { NextRequest } from "next/server";
import { fetchMatchesAndTeamsFifa, fetchFifaScores, applyFifaScores, attachFifaGoals } from "@/lib/feeds";
import type { Match, Team } from "@/lib/types";

export const dynamic = "force-dynamic";

const RECENT_MS = 60 * 60 * 1000;
const MATCH_DURATION = 2.5 * 60 * 60 * 1000;

function isRecentlyFinished(m: Match): boolean {
  if (m.status !== "FINISHED") return false;
  const kickoff = new Date(m.utcDate).getTime();
  if (isNaN(kickoff)) return false;
  return kickoff + MATCH_DURATION > Date.now() - RECENT_MS;
}

export async function GET(request: NextRequest) {
  const locale = request.nextUrl.searchParams.get("locale") || "de";
  try {
    const { matches: rawMatches, teams } = await fetchMatchesAndTeamsFifa(locale);

    const relevant = rawMatches.filter(m =>
      m.status === "LIVE" || m.status === "IN_PLAY" || m.status === "PAUSED" || isRecentlyFinished(m),
    );

    if (relevant.length === 0) {
      return NextResponse.json({
        updatedAt: new Date().toISOString(),
        liveCount: 0,
        recentCount: 0,
        teams: [] as Team[],
        matches: [] as Match[],
      });
    }

    let fifaData: Awaited<ReturnType<typeof fetchFifaScores>>;
    try {
      fifaData = await fetchFifaScores();
    } catch {
      return NextResponse.json({
        updatedAt: new Date().toISOString(),
        liveCount: relevant.filter(m => m.status !== "FINISHED").length,
        recentCount: relevant.filter(m => m.status === "FINISHED").length,
        teams,
        matches: relevant,
        goalsFailed: true,
      });
    }

    let matches = applyFifaScores(relevant, teams, fifaData);
    let goalsFailed = false;

    try {
      matches = await attachFifaGoals(matches, fifaData, locale);
    } catch {
      goalsFailed = true;
    }

    const liveCount = matches.filter(m => m.status === "LIVE" || m.status === "IN_PLAY" || m.status === "PAUSED").length;
    const recentCount = matches.filter(m => m.status === "FINISHED" && isRecentlyFinished(m)).length;

    return NextResponse.json({
      updatedAt: new Date().toISOString(),
      liveCount,
      recentCount,
      teams,
      matches,
      goalsFailed,
    });
  } catch (err) {
    const message = err instanceof Error ? err.message : "unbekannter Fehler";
    return NextResponse.json(
      { error: "Live-Feed nicht erreichbar", detail: message },
      { status: 502 },
    );
  }
}