"use client";

import { useCallback, useEffect, useState } from "react";
import type { RadioStats } from "@/app/(frontend)/minigames/radio/actions";
import {
  isRadioUnlocked,
  SPRINT_ACCURACY_REQUIREMENT,
  WATCH_ACCURACY_REQUIREMENT,
} from "@/lib/minigames/custom/radio";
import { useRealtimePresence } from "@/hooks/useRealtimePresence";
import { UnlockNotice } from "@/components/frontend/minigames/UnlockNotice";
import { UgcLinkButton } from "@/components/frontend/minigames/UgcLinkButton";
import { RadioLeaderboard } from "./RadioLeaderboard";
import { RadioTraffic } from "./RadioTraffic";

export function RadioArena({
  initialStats,
  currentUserId,
}: {
  initialStats: RadioStats;
  currentUserId: number | string;
}) {
  const [refreshKey, setRefreshKey] = useState(0);
  const [playing, setPlaying] = useState(false);
  const [mode, setMode] = useState<"sprint" | "watch">("sprint");
  const [modeHydrated, setModeHydrated] = useState(false);
  const activeOperators = useRealtimePresence("radio", playing, true);
  const onPhaseChange = useCallback((phase: "ready" | "playing" | "over") => {
    setPlaying(phase === "playing");
  }, []);

  const customUnlocked = isRadioUnlocked({
    sprintBestAccuracy: initialStats.sprintBestAccuracy,
    watchBestAccuracy: initialStats.watchBestAccuracy,
  });
  const sprintPercent = Math.round(initialStats.sprintBestAccuracy * 100);
  const watchPercent = Math.round(initialStats.watchBestAccuracy * 100);

  useEffect(() => {
    const savedMode = window.localStorage.getItem("radio-traffic-mode");
    if (savedMode === "sprint" || savedMode === "watch") setMode(savedMode);
    setModeHydrated(true);
  }, []);

  useEffect(() => {
    if (modeHydrated) window.localStorage.setItem("radio-traffic-mode", mode);
  }, [mode, modeHydrated]);

  return (
    <div className="flex flex-col items-center gap-6">
      {customUnlocked && (
        <UgcLinkButton
          href="/minigames/radio/custom"
          title="UGC Radio Tests"
          subtitle="Play and create custom radio tests you can share with other unit members! Runs are unranked, so it is a great place to practice before an official transmission."
          unlocked={customUnlocked}
          className="max-w-[520px]"
        />
      )}
      {!customUnlocked && (
        <UnlockNotice
          title="custom radio tests"
          requirement={`your best accuracy reaches ${Math.round(SPRINT_ACCURACY_REQUIREMENT * 100)}% in sprint and ${Math.round(WATCH_ACCURACY_REQUIREMENT * 100)}% in watch`}
          progress={`Sprint ${sprintPercent}%, Watch ${watchPercent}%`}
        />
      )}
      <RadioTraffic
        initialStats={initialStats}
        mode={mode}
        onModeChangeAction={setMode}
        onGameRecordedAction={() => setRefreshKey((key) => key + 1)}
        onPhaseChangeAction={onPhaseChange}
      />
      <div className="w-full max-w-[520px]">
        <h2 className="text-xs font-semibold uppercase tracking-wider text-muted-foreground">How scoring works</h2>
        <ul className="mt-1.5 flex flex-col gap-0.5 text-xs leading-relaxed text-muted-foreground/80">
          <li>
            Accuracy tracks every keystroke; each wrong character or backspace counts against it. Each message scores accuracy × speed multiplier, up to ~120 points for a fast perfect message.
          </li>
          <li>
            <span className="font-medium text-foreground/80">Sprint:</span> clear exactly 10 messages as fast as possible; maximum score is 1200.
          </li>
          <li>
            <span className="font-medium text-foreground/80">Watch:</span> relay as many messages as possible in 60 seconds; score is unbounded in practice.
          </li>
          <li>
            <span className="font-medium text-foreground/80">XP:</span> earn 0.1 per perfectly-typed message.
          </li>
          <li>The lifetime leaderboard ranks Top Score, Top Accuracy, Fastest Sprint, and Most Messages.</li>
        </ul>
      </div>
      <RadioLeaderboard
        refreshKey={refreshKey}
        mode={mode}
        modeHydrated={modeHydrated}
        currentUserId={currentUserId}
        activeOperators={activeOperators}
      />
    </div>
  );
}