import { api, airQuality, configureTheme, isDemo, modeInfo, numberOrDash, panelUrl, showToast } from "./api.js";

const requestedLayout = new URLSearchParams(window.location.search).get("layout");
const layoutMode = ["horizontal", "vertical"].includes(requestedLayout) ? requestedLayout : null;
const wideLayout = window.matchMedia("(min-width: 800px)");

function applyLayout() {
  document.documentElement.dataset.widgetLayout = layoutMode || (wideLayout.matches ? "horizontal" : "vertical");
}

applyLayout();
wideLayout.addEventListener("change", () => !layoutMode && applyLayout());

const $ = selector => document.querySelector(selector);
const themeMode = configureTheme($("#theme-button"));
let state = null;
let busy = false;

if (isDemo) $("#demo-note").hidden = false;

function setText(selector, value) { $(selector).textContent = value; }
function setPill(element, label, tone) { element.textContent = label; element.className = `pill ${tone}`; }
function toneClass(tone) { return ["good", "warn", "bad"].includes(tone) ? tone : "muted"; }

function updateSpeedVisual(value) {
  const speed = Math.max(1, Math.min(6, Number(value) || 1));
  setText("#speed", speed);
  $("#speed").classList.remove("skeleton");
  document.querySelectorAll("[data-speed]").forEach(button => {
    const segment = Number(button.dataset.speed);
    button.classList.toggle("active", segment <= speed);
    button.setAttribute("aria-pressed", String(segment === speed));
  });
}

function updateTemperatureVisual(value) {
  const temperature = Math.max(5, Math.min(30, Number(value) || 5));
  setText("#target-temp", temperature);
  $("#target-temp").classList.remove("skeleton");
  $("#temperature-range").value = temperature;
}

function drawToggle(selector, active) {
  const button = $(selector);
  button.setAttribute("aria-pressed", String(Boolean(active)));
  button.textContent = active ? "ON" : "OFF";
}

function render(status) {
  state = status;
  const tion = status.tion || {};
  const sensor = status.qingping || {};
  const schedule = status.schedule || {};
  const mode = modeInfo(status);
  const quality = airQuality(sensor.co2);
  const headerMode = schedule.override_active && schedule.override_until_time
    ? `Ручной до ${schedule.override_until_time}`
    : mode.label;

  setPill($("#connection"), status.online ? "Online" : "Offline", status.online ? "good" : "bad");
  setPill($("#mode-pill"), headerMode, mode.tone);
  setText("#mode-detail", mode.detail);

  updateSpeedVisual(tion.fan_speed);
  setText("#speed-note", status.auto?.state === "active" && status.auto?.target_speed
    ? `AUTO выбрал скорость ${status.auto.target_speed}`
    : `Ступень ${numberOrDash(tion.fan_speed)} из 6`);
  updateTemperatureVisual(tion.target_temp);
  setText("#heating-note", tion.heating ? "Сейчас нагревает входящий воздух" : tion.heater ? "Обогрев разрешён" : "Желаемая температура воздуха");

  drawToggle("#power-toggle", tion.power);
  drawToggle("#heater-toggle", tion.heater);
  setText("#power-detail", tion.power ? "Устройство включено" : "Устройство выключено");
  setText("#heater-detail", tion.heating ? "Сейчас нагревает" : tion.heater ? "Автоматически" : "Выключен");

  setText("#co2", numberOrDash(sensor.co2));
  setText("#air-label", quality.label);
  $("#air-label").className = `quality-chip ${toneClass(quality.tone)}`;
  $("#co2-progress").style.width = `${Math.max(0, Math.min(100, quality.pct))}%`;
  setText("#room-temp", numberOrDash(sensor.temperature ?? tion.in_temp, 1));
  setText("#humidity", numberOrDash(sensor.humidity));
  setText("#current-time", schedule.current_time || tion.device_time || "—");
  setText("#next-time", schedule.next_time || "—");
}

async function refresh(silent = false) {
  try { render(await api.status()); }
  catch (error) {
    setPill($("#connection"), "Ошибка", "bad");
    if (!silent) showToast(error.message, true);
  }
}

async function act(path, source) {
  if (busy) return;
  busy = true;
  source?.setAttribute("disabled", "");
  try { await api.post(path); await refresh(true); }
  catch (error) { showToast(error.message, true); await refresh(true); }
  finally { busy = false; source?.removeAttribute("disabled"); }
}

function stepped(kind, delta, source) {
  if (busy || !state?.tion) return;
  const isSpeed = kind === "speed";
  const current = Number(isSpeed ? state.tion.fan_speed : state.tion.target_temp);
  const min = isSpeed ? 1 : 5;
  const max = isSpeed ? 6 : 30;
  const value = Math.min(max, Math.max(min, current + delta));
  if (!Number.isFinite(value) || value === current) return;

  if (isSpeed) {
    state.tion.fan_speed = value;
    updateSpeedVisual(value);
  } else {
    state.tion.target_temp = value;
    updateTemperatureVisual(value);
  }
  act(`/api/tion/${isSpeed ? "speed" : "temperature"}/${value}`, source);
}

document.querySelectorAll("[data-step]").forEach(button => button.addEventListener("click", () => {
  stepped(button.dataset.step, Number(button.dataset.delta), button);
}));

document.querySelectorAll("[data-speed]").forEach(button => button.addEventListener("click", () => {
  if (busy || !state?.tion) return;
  const value = Number(button.dataset.speed);
  state.tion.fan_speed = value;
  updateSpeedVisual(value);
  act(`/api/tion/speed/${value}`, button);
}));

$("#temperature-range").addEventListener("input", event => setText("#target-temp", event.target.value));
$("#temperature-range").addEventListener("change", event => {
  if (busy || !state?.tion) return;
  const value = Number(event.target.value);
  state.tion.target_temp = value;
  updateTemperatureVisual(value);
  act(`/api/tion/temperature/${value}`, event.target);
});

$("#power-toggle").addEventListener("click", event => {
  if (busy || !state?.tion) return;
  const value = !state.tion.power;
  state.tion.power = value;
  drawToggle("#power-toggle", value);
  setText("#power-detail", value ? "Устройство включено" : "Устройство выключено");
  act(`/api/tion/power/${value ? "on" : "off"}`, event.currentTarget);
});

$("#heater-toggle").addEventListener("click", event => {
  if (busy || !state?.tion) return;
  const value = !state.tion.heater;
  state.tion.heater = value;
  drawToggle("#heater-toggle", value);
  setText("#heater-detail", value ? "Автоматически" : "Выключен");
  act(`/api/tion/heater/${value ? "on" : "off"}`, event.currentTarget);
});

$("#open-panel").addEventListener("click", () => window.open(panelUrl(themeMode()), "_blank", "noopener"));
$("#air-link").addEventListener("click", () => window.open(panelUrl(themeMode(), "air"), "_blank", "noopener"));
$("#schedule-link").addEventListener("click", () => window.open(panelUrl(themeMode(), "schedule"), "_blank", "noopener"));

refresh();
setInterval(() => !document.hidden && !busy && refresh(true), 3000);