import Phaser from "phaser";
import { ArenaScene } from "./game/arena/ArenaScene.js";
import {
  ARENA_SIZE,
  PRESENTATION_TEAM_COUNT,
  PRESENTATION_TEAM_SIZE,
} from "./constants.js";
import { createMatchForm } from "./ui/matchForm.js";
import { createAboutDialog } from "./ui/aboutDialog.js";
import { trackVisitor } from "./ui/visitorCounter.js";

const matchForm = createMatchForm();
const aboutDialog = createAboutDialog();
const appNode = document.querySelector("#app");
const startButton = document.querySelector("#start-button");
const drawer = document.querySelector("#fighter-entry");
const drawerCloseButton = document.querySelector("#drawer-close");
const drawerScrim = document.querySelector("#drawer-scrim");
const drawerToggleButton = document.querySelector("#drawer-toggle");
const playerNamesInput = document.querySelector("#player-names");
const pauseButton = document.querySelector("#pause-button");
const restartButton = document.querySelector("#restart-button");
const MOBILE_MATCH_MEDIA_QUERY = "(max-width: 960px)";

function isMatchLive() {
  return appNode?.classList.contains("match-live") ?? false;
}

function openOptionsDrawer({ focus = true } = {}) {
  appNode?.classList.add("options-open");
  setDrawerCollapsed(false);
  resetDrawerScroll();
  drawer?.setAttribute("aria-hidden", "false");
  startButton?.setAttribute("aria-expanded", "true");

  if (focus) {
    window.setTimeout(() => playerNamesInput?.focus(), 220);
  }
}

function closeOptionsDrawer() {
  if (isMatchLive()) {
    setDrawerCollapsed(true);
    return;
  }

  appNode?.classList.remove("options-open");
  appNode?.classList.remove("drawer-collapsed");
  drawer?.setAttribute("aria-hidden", "true");
  startButton?.setAttribute("aria-expanded", "false");
  syncDrawerToggleButton();
}

function startConfiguredMatch(matchConfig) {
  if (matchConfig.names.length < 2) {
    matchForm.setStatus("참가자 닉네임을 2명 이상 입력하세요");
    return;
  }

  appNode?.classList.remove("match-ended");
  appNode?.classList.add("match-live");

  if (shouldCompactOptionsDrawer()) {
    setDrawerCollapsed(true);
  } else {
    openOptionsDrawer({ focus: false });
  }

  arenaScene.startMatch(matchConfig);
  syncPauseButton();
}

function getPresentationMatchConfig() {
  return {
    names: Array.from({ length: PRESENTATION_TEAM_COUNT }, (_, index) => `Player ${index + 1}`),
    teamSize: PRESENTATION_TEAM_SIZE,
  };
}

function setDrawerCollapsed(collapsed) {
  const nextCollapsed = Boolean(collapsed) && isMatchLive();

  appNode?.classList.toggle("drawer-collapsed", nextCollapsed);
  drawer?.setAttribute("aria-hidden", "false");

  if (!nextCollapsed) {
    resetDrawerScroll();
  }

  syncDrawerToggleButton();
}

function syncDrawerToggleButton() {
  if (!drawerToggleButton) {
    return;
  }

  const isCollapsed = appNode?.classList.contains("drawer-collapsed") ?? false;
  drawerToggleButton.textContent = isCollapsed ? "옵션 펼치기" : "옵션 접기";
  drawerToggleButton.setAttribute("aria-expanded", String(!isCollapsed));
}

function syncPauseButton() {
  if (!pauseButton) {
    return;
  }

  const isPaused = arenaScene.isMatchPaused();
  appNode?.classList.toggle("match-paused", isPaused);
  pauseButton.textContent = isPaused ? "계속" : "일시정지";
  pauseButton.setAttribute("aria-pressed", String(isPaused));
}

function shouldCompactOptionsDrawer() {
  return window.matchMedia?.(MOBILE_MATCH_MEDIA_QUERY).matches ?? window.innerWidth <= 960;
}

function resetDrawerScroll() {
  if (drawer) {
    drawer.scrollTop = 0;
  }
}

function handleMatchEnd() {
  appNode?.classList.add("match-ended");
  setDrawerCollapsed(true);
  syncPauseButton();
}

function revealAppWhenStylesAreReady() {
  const stylesheet = document.querySelector('link[data-app-styles], link[rel="stylesheet"]');
  const reveal = () => {
    window.requestAnimationFrame(() => {
      document.documentElement.classList.remove("app-booting");
    });
  };

  if (!stylesheet || stylesheet.sheet) {
    reveal();
    return;
  }

  stylesheet.addEventListener("load", reveal, { once: true });
}

startButton?.addEventListener("click", openOptionsDrawer);
drawerCloseButton?.addEventListener("click", closeOptionsDrawer);
drawerScrim?.addEventListener("click", closeOptionsDrawer);
drawerToggleButton?.addEventListener("click", () => {
  const isCollapsed = appNode?.classList.contains("drawer-collapsed") ?? false;
  setDrawerCollapsed(!isCollapsed);
});
pauseButton?.addEventListener("click", () => {
  arenaScene.togglePause();
  syncPauseButton();
});
restartButton?.addEventListener("click", () => {
  startConfiguredMatch(matchForm.readMatchConfig());
});
window.addEventListener("keydown", (event) => {
  if (event.key === "Escape") {
    if (aboutDialog?.isOpen()) {
      return;
    }

    closeOptionsDrawer();
  }
});

const arenaScene = new ArenaScene({
  getInitialMatchConfig: getPresentationMatchConfig,
  onMatchEnd: handleMatchEnd,
  setStatus: matchForm.setStatus,
});

const game = new Phaser.Game({
  type: Phaser.AUTO,
  parent: "game",
  width: ARENA_SIZE,
  height: ARENA_SIZE,
  pixelArt: true,
  backgroundColor: "#282819",
  physics: {
    default: "arcade",
    arcade: {
      debug: false,
    },
  },
  scale: {
    mode: Phaser.Scale.FIT,
    autoCenter: Phaser.Scale.CENTER_BOTH,
  },
  scene: arenaScene,
});

revealAppWhenStylesAreReady();

matchForm.onSubmit((matchConfig) => {
  startConfiguredMatch(matchConfig);
});

const visitorCountNode = document.querySelector("#visitor-count");

trackVisitor({
  onUpdate({ uniqueVisitors }) {
    if (visitorCountNode) {
      visitorCountNode.textContent = `방문자 ${uniqueVisitors.toLocaleString("ko-KR")}`;
    }
  },
  onError(error) {
    console.warn(error);

    if (visitorCountNode) {
      visitorCountNode.textContent = "";
      visitorCountNode.hidden = true;
    }
  },
});

window.arenaGame = game;