import { Suspense } from "react";
import { notFound } from "next/navigation";
import { AiAnalysisCard } from "@/components/ai-analysis-card";
import { RouteMapSection } from "@/components/route-map-section";
import { StatCard } from "@/components/stat-card";
import { formatDate, formatDistance, formatDuration, formatPace } from "@/lib/format";
import { fetchActivityRoutePoints, getAuthorizedClient } from "@/lib/garmin/client";
import { getLatestAnalysisForTarget, serializeAnalysis } from "@/lib/models/analysis";
import { getRunningActivity, setRunningActivityRoutePoints, type RunningActivity } from "@/lib/models/running";

export const dynamic = "force-dynamic";

async function RouteMapFetcher({ activity }: { activity: RunningActivity }) {
  let routePoints = activity.routePoints;

  if (!routePoints && activity.hasRoute) {
    try {
      const client = await getAuthorizedClient();
      const points = await fetchActivityRoutePoints(client, activity.garminActivityId);
      if (points) {
        await setRunningActivityRoutePoints(activity.garminActivityId, points);
        routePoints = points;
      }
    } catch {
      // GPS fetch failed silently
    }
  }

  return (
    <div className="col-span-2 row-span-3 min-h-[240px] overflow-hidden rounded-lg border border-muted/40">
      {routePoints && routePoints.length > 0 ? (
        <RouteMapSection points={routePoints} />
      ) : (
        <div className="flex h-full min-h-[240px] items-center justify-center bg-surface">
          <span className="text-sm text-fg/30">Brak danych GPS</span>
        </div>
      )}
    </div>
  );
}

function MapSkeleton() {
  return (
    <div className="col-span-2 row-span-3 min-h-[240px] animate-pulse overflow-hidden rounded-lg border border-muted/40 bg-surface" />
  );
}

export default async function RunningActivityPage({
  params,
}: {
  params: Promise<{ id: string }>;
}) {
  const { id } = await params;
  const activity = await getRunningActivity(id);

  if (!activity) {
    notFound();
  }

  const analysis = await getLatestAnalysisForTarget("running", activity._id);

  return (
    <div className="flex flex-col gap-6">
      <div>
        <h1 className="text-2xl font-bold text-fg">{activity.name}</h1>
        <p className="mt-1 text-sm text-fg/60">{formatDate(activity.startTime)}</p>
      </div>

      <section className="grid grid-cols-3 gap-4">
        {/* Map: cols 1–2, rows 1–3 — streamed in after page skeleton */}
        <Suspense fallback={<MapSkeleton />}>
          <RouteMapFetcher activity={activity} />
        </Suspense>

        {/* Col 3, rows 1–3: key pace stats */}
        <StatCard highlight label="Dystans" value={formatDistance(activity.distanceM)} />
        <StatCard highlight label="Czas" value={formatDuration(activity.durationSec)} />
        <StatCard highlight label="Tempo" value={formatPace(activity.avgPaceSecPerKm)} />

        {/* Row 4: HR, calories, cadence — always shown */}
        <StatCard highlight label="Średnie HR" value={activity.avgHr ? `${Math.round(activity.avgHr)} bpm` : "—"} />
        <StatCard highlight label="Kalorie" value={activity.calories ? `${Math.round(activity.calories)} kcal` : "—"} />
        <StatCard highlight label="Kadencja" value={activity.avgCadence ? `${Math.round(activity.avgCadence)} kr/min` : "—"} />

        {/* Row 5+: optional advanced stats, auto-flow */}
        {activity.maxHr ? <StatCard label="Maks. HR" value={`${Math.round(activity.maxHr)} bpm`} /> : null}
        {activity.elevationGainM ? <StatCard label="Podejście" value={`${Math.round(activity.elevationGainM)} m`} /> : null}
        {activity.vo2Max ? <StatCard label="VO2max" value={`${Math.round(activity.vo2Max)}`} /> : null}
        {activity.avgGroundContactTimeMs ? (
          <StatCard label="Czas kontaktu z podłożem" value={`${Math.round(activity.avgGroundContactTimeMs)} ms`} />
        ) : null}
        {activity.avgVerticalOscillationCm ? (
          <StatCard label="Oscylacja wertykalna" value={`${activity.avgVerticalOscillationCm.toFixed(1)} cm`} />
        ) : null}
        {activity.avgVerticalRatioPct ? (
          <StatCard label="Wskaźnik wertykalny" value={`${activity.avgVerticalRatioPct.toFixed(1)}%`} />
        ) : null}
        {activity.avgStrideLengthCm ? (
          <StatCard label="Długość kroku" value={`${activity.avgStrideLengthCm.toFixed(0)} cm`} />
        ) : null}
        {activity.avgGroundContactBalanceLeftPct ? (
          <StatCard
            label="Balans kontaktu (L/P)"
            value={`${activity.avgGroundContactBalanceLeftPct.toFixed(1)}% / ${(100 - activity.avgGroundContactBalanceLeftPct).toFixed(1)}%`}
          />
        ) : null}
        {activity.avgPowerW ? <StatCard label="Moc średnia" value={`${Math.round(activity.avgPowerW)} W`} /> : null}
        {activity.maxPowerW ? <StatCard label="Moc maks." value={`${Math.round(activity.maxPowerW)} W`} /> : null}
        {activity.avgRespirationRate ? (
          <StatCard label="Częstość oddechów" value={`${activity.avgRespirationRate.toFixed(1)} /min`} />
        ) : null}
        {activity.aerobicTrainingEffect ? (
          <StatCard label="Efekt aerobowy" value={activity.aerobicTrainingEffect.toFixed(1)} />
        ) : null}
        {activity.anaerobicTrainingEffect ? (
          <StatCard label="Efekt anaerobowy" value={activity.anaerobicTrainingEffect.toFixed(1)} />
        ) : null}
      </section>

      <AiAnalysisCard targetType="running" targetId={activity._id.toString()} analysis={analysis ? serializeAnalysis(analysis) : null} />
    </div>
  );
}