// Boot, game lifecycle (menu, new game, load, autosave), panel wiring and the real-time loop.
//
// Dev URL params skip the menu and start a new game at once (and never touch the real autosave):
//   ?lang=fr  ?seed=N  ?pronouns=he|she|they  ?alloc=K (scale every sector budget by K)
//   ?skip=DAYS (fast-forward, answering cards at random)  ?card=ID (show that card first)
//   ?dev (exposes window.__game)  ?new (just start a game)   ?menu (force the menu)

import {
  createGame, advanceDay, setBudget, setSpeed, setPronouns, dismissAlert, isWaiting,
  createClock, consumeClock, ensureCard, answerCard, indexCards, nextFloat,
} from "./engine/index.js";
import { initI18n, setLang, getLang, t } from "./i18n/i18n.js";
import { createStorage, writeSave, loadSettings, saveSettings, KEYS } from "./save/storage.js";
import { tilt } from "./ui/desk.js";
import { createDashboard } from "./ui/dashboard.js";
import { createCalendar } from "./ui/calendar.js";
import { createNewspaper } from "./ui/newspaper.js";
import { createDecision } from "./ui/decision.js";
import { createLedger } from "./ui/ledger.js";
import { createTelegram } from "./ui/telegram.js";
import { createEndgame } from "./ui/endgame.js";
import { createMenu } from "./ui/menu.js";

const params = new URLSearchParams(location.search);
const getJson = (url) => fetch(url).then((r) => r.json());

// ---- Content ----

const [balance, newsTpl, endgame, characters, cardIndex, scenarioIndex] = await Promise.all([
  getJson("data/balance.json"),
  getJson("data/newspaper.json"),
  getJson("data/endgame.json"),
  getJson("data/characters.json"),
  getJson("data/cards/index.json"),
  getJson("data/scenarios/index.json"),
]);
const cards = (await Promise.all(cardIndex.files.map((f) => getJson(`data/cards/${f}`)))).flat();
const scenarios = Object.fromEntries(
  await Promise.all(scenarioIndex.scenarios.map(async (id) => [id, await getJson(`data/scenarios/${id}.json`)])),
);
const cardsById = indexCards(cards);
const content = { scenarios, balance, cards };

// ---- Settings and storage ----

const storage = createStorage();
let settings = loadSettings(storage);
const browserLang = navigator.language?.startsWith("fr") ? "fr" : "en";
await initI18n(params.get("lang") ?? settings.lang ?? browserLang);

const DEV_PARAMS = ["seed", "pronouns", "alloc", "skip", "card", "dev", "new"];
const devRun = DEV_PARAMS.some((k) => params.has(k)) && !params.has("menu");

// ---- Game and screen state ----

let state = null; // the running game, or null in the main menu
let scenario = null;
let panels = null;
let menuOpen = true;
let lastSpeed = 1;

const el = {
  dash: document.getElementById("dashboard"),
  folder: document.getElementById("folder"),
  ledger: document.getElementById("ledger"),
  alerts: document.getElementById("alerts"),
  endgame: document.getElementById("endgame"),
  cal: document.getElementById("calendar"),
  news: document.getElementById("newspaper"),
  menu: document.getElementById("menu"),
};
const pad = document.getElementById("pad");
for (const id of ["dash", "folder", "cal", "news"]) tilt(el[id], id);

// A weekly pause needs a card; with none eligible the week is simply empty.
function prepareWeek() {
  ensureCard(state, balance, cards);
}

function autosave() {
  if (!state || devRun) return;
  if (state.over) storage.remove(KEYS.auto); // a finished game has nothing to continue
  else writeSave(storage, KEYS.auto, state);
}

// ---- Panels ----

function build() {
  panels?.decision.destroy();
  document.title = t("app.title");
  state.lang = getLang();
  panels = {
    dash: createDashboard(el.dash, scenario),
    decision: createDecision(el.folder, { cardsById, characters, onAnswer, onProfile, keysEnabled: () => !menuOpen }),
    ledger: createLedger(el.ledger, scenario, { onConfirm: render }),
    cal: createCalendar(el.cal, balance, { onSpeed, onMenu: openMenu }),
    news: createNewspaper(el.news, newsTpl),
    alerts: createTelegram(el.alerts, { alerts: endgame.alerts, onDismiss }),
    endgame: createEndgame(el.endgame, { newsName: newsTpl.name, endgame, cards, onAgain: quitToMenu }),
  };
  render();
}

function render() {
  if (!state) return;
  for (const p of Object.values(panels)) p.update(state, balance);
  // The ledger covers the folder and the side column; the end screen covers everything.
  pad.classList.toggle("is-ledger", Boolean(state.pending.review && !state.pending.profile && !state.over));
  pad.classList.toggle("is-endgame", Boolean(state.over));
  autosave();
}

// ---- Game lifecycle ----

function newGame({ countryName, scenarioId = scenarioIndex.scenarios[0], pronouns }) {
  return createGame({
    scenario: scenarios[scenarioId],
    balance,
    seed: params.has("seed") ? Number(params.get("seed")) : crypto.getRandomValues(new Uint32Array(1))[0],
    lang: getLang(),
    countryName,
    pronouns,
  });
}

function enterGame(next) {
  state = next;
  scenario = scenarios[state.scenarioId];
  if (params.has("dev")) window.__game = state;
  lastSpeed = state.speed || 1;
  prepareWeek();
  closeMenu();
  build();
}

function openMenu() {
  if (!state) return;
  menuOpen = true;
  pad.classList.add("is-menu");
  menu.show("game");
}

function closeMenu() {
  menuOpen = false;
  pad.classList.remove("is-menu");
  menu.hide();
  clock.acc = 0;
}

function quitToMenu() {
  autosave();
  panels?.decision.destroy();
  state = null;
  panels = null;
  for (const id of ["dash", "folder", "ledger", "alerts", "endgame", "cal", "news"]) el[id].innerHTML = "";
  el.ledger.hidden = true;
  el.alerts.hidden = true;
  el.endgame.hidden = true;
  pad.classList.remove("is-ledger", "is-endgame");
  pad.classList.add("is-menu");
  menuOpen = true;
  menu.show("main");
}

function applySettings(patch) {
  const langChanged = patch.lang && patch.lang !== getLang();
  settings = { ...settings, ...patch };
  saveSettings(storage, settings);
  if (!langChanged) return;
  setLang(patch.lang);
  document.title = t("app.title");
  if (state) build();
  menu.refresh();
}

const menu = createMenu(el.menu, {
  content,
  storage,
  getState: () => state,
  getSettings: () => settings,
  handlers: {
    onStart: (options) => enterGame(newGame(options)),
    onLoadState: enterGame,
    onResume: closeMenu,
    onQuit: quitToMenu,
    onSettings: applySettings,
  },
});

// ---- Player actions ----

function onSpeed(speed) {
  if (speed > 0) lastSpeed = speed;
  setSpeed(state, balance, speed);
  render();
}

function onAnswer(choice) {
  answerCard(state, balance, cards, choice);
  render();
}

function onProfile(pronouns) {
  setPronouns(state, pronouns);
  render();
}

function onDismiss() {
  dismissAlert(state);
  render();
}

document.addEventListener("keydown", (e) => {
  if (!state || e.target.closest?.("input, textarea, select") || e.ctrlKey || e.metaKey || e.altKey) return;
  if (menuOpen) return; // the menu handles its own keys
  if (e.key === "Escape" && !state.over) {
    openMenu();
  } else if (e.code === "Space") {
    e.preventDefault();
    onSpeed(state.speed > 0 ? 0 : lastSpeed);
  } else if (/^[1-9]$/.test(e.key) && balance.time.speeds[Number(e.key) - 1]) {
    onSpeed(balance.time.speeds[Number(e.key) - 1]);
  }
});

addEventListener("pagehide", autosave);
document.addEventListener("visibilitychange", () => { if (document.hidden) autosave(); });

// ---- Dev shortcuts ----

function devGame() {
  const s = newGame({ pronouns: params.get("pronouns") ?? undefined });
  state = s; // the helpers below act on `state`
  if (params.has("alloc")) {
    const k = Number(params.get("alloc"));
    setBudget(s, balance, { alloc: Object.fromEntries(Object.entries(s.sectors).map(([id, x]) => [id, x.alloc * k])) });
  }
  for (let i = 0, n = Number(params.get("skip") ?? 0); i < n && !s.over; i++) {
    if (s.pending.profile) setPronouns(s, "they");
    s.pending.review = false;
    while (s.pending.alert) dismissAlert(s);
    prepareWeek();
    if (s.pendingCard) answerCard(s, balance, cards, nextFloat(s) < 0.5 ? "yes" : "no");
    advanceDay(s, balance);
  }
  if (cardsById.has(params.get("card"))) {
    s.pendingCard = { id: params.get("card"), day: s.day };
    s.pending.weeklyCard = true;
  }
  return s;
}

// ---- Start ----

const clock = createClock();
let last = performance.now();

if (devRun) enterGame(devGame());
else quitToMenu();

function frame(now) {
  const dt = now - last;
  last = now;
  if (state && !menuOpen && state.speed > 0 && !state.over && !isWaiting(state)) {
    const msPerDay = settings.slow ? balance.time.slowMsPerDay : balance.time.msPerDay;
    let days = consumeClock(clock, dt, msPerDay, state.speed);
    while (days-- > 0) {
      const r = advanceDay(state, balance);
      if (!r.advanced) break;
      if (r.events.weeklyCard) prepareWeek();
      render();
      if (isWaiting(state) || state.over) {
        clock.acc = 0;
        break;
      }
    }
  } else {
    clock.acc = 0;
  }
  requestAnimationFrame(frame);
}
requestAnimationFrame(frame);