import { startStatusSocket } from "/js/status-panel.js";
import { buildCameraGrid, setPreviewActive } from "/js/camera-preview.js";
import { buildCameraTabs } from "/js/camera-settings.js";
import { initRecordingPanel } from "/js/recording-panel.js";
import { initLogPanel } from "/js/log-panel.js";
import { initPointcloudView } from "/js/pointcloud-view.js";

async function getJSON(url, opts) {
  const res = await fetch(url, opts);
  if (!res.ok) throw new Error(`${url}: ${res.status} ${await res.text()}`);
  return res.json();
}

const OVERLAY_IDS = ["overlay-settings", "overlay-recording", "overlay-log"];
let pointcloudView = null;

function anyOverlayOpen() {
  return OVERLAY_IDS.some((id) => !document.getElementById(id).classList.contains("hidden"));
}
// The point-cloud render loop keeps running (cheap-ish) but there's no
// reason to keep painting frames the operator can't see behind a full-screen
// overlay — pause on open, resume once every overlay is closed.
function syncPointcloudPaused() {
  if (pointcloudView) pointcloudView.setPaused(anyOverlayOpen());
}

function openOverlay(id) {
  document.getElementById(id).classList.remove("hidden");
  syncPointcloudPaused();
}
function closeOverlay(id) {
  document.getElementById(id).classList.add("hidden");
  syncPointcloudPaused();
}

// Camera MJPEG only needs to stream while its tab is actually visible inside
// the open Settings overlay — otherwise it's wasted phone battery/bandwidth
// behind a closed overlay (same reasoning M3's point-cloud stream will need
// for the scan view itself).
function syncPreviewActive() {
  const overlaySettings = document.getElementById("overlay-settings");
  const previewPane = document.getElementById("pane-camera-preview");
  const active = !overlaySettings.classList.contains("hidden") && previewPane.classList.contains("active");
  setPreviewActive(active);
}

function setupOverlays() {
  document.querySelectorAll("[data-close]").forEach((el) => {
    el.onclick = () => {
      closeOverlay(el.dataset.close);
      syncPreviewActive();
    };
  });

  document.getElementById("btn-settings").onclick = () => {
    openOverlay("overlay-settings");
    syncPreviewActive();
  };
  document.getElementById("btn-rec-open").onclick = () => openOverlay("overlay-recording");
  document.getElementById("btn-open-log").onclick = () => openOverlay("overlay-log");
}

function setupPaneTabs() {
  const btns = document.querySelectorAll(".pane-tab-btn[data-pane]");
  btns.forEach((btn) => {
    btn.onclick = () => {
      btns.forEach((b) => b.classList.remove("active"));
      document.querySelectorAll(".pane-tab").forEach((p) => p.classList.remove("active"));
      btn.classList.add("active");
      document.getElementById(btn.dataset.pane).classList.add("active");
      syncPreviewActive();
    };
  });
}

async function main() {
  setupOverlays();
  setupPaneTabs();
  pointcloudView = initPointcloudView();

  const status = await getJSON("/api/status");
  await buildCameraGrid(status.cameras);
  await buildCameraTabs(status.cameras);

  initRecordingPanel(status.default_save_dir);
  initLogPanel();

  document.getElementById("btn-lidar-start").onclick = async () => {
    await getJSON("/api/lidar/start", { method: "POST" });
  };
  document.getElementById("btn-lidar-stop").onclick = async () => {
    await getJSON("/api/lidar/stop", { method: "POST" });
  };
  document.getElementById("btn-estop").onclick = async () => {
    if (!confirm("모든 프로세스(LiDAR/카메라/녹화)를 즉시 정지합니다. 계속할까요?")) return;
    await getJSON("/api/system/estop", { method: "POST" });
  };
  document.getElementById("btn-fastlio-test-start").onclick = async () => {
    try {
      await getJSON("/api/fastlio/start", { method: "POST" });
    } catch (e) {
      alert(String(e));
    }
  };
  document.getElementById("btn-fastlio-test-stop").onclick = async () => {
    try {
      await getJSON("/api/fastlio/stop", { method: "POST" });
    } catch (e) {
      alert(String(e));
    }
  };

  const btnViewOrbit = document.getElementById("btn-view-orbit");
  const btnViewLidar = document.getElementById("btn-view-lidar");
  btnViewOrbit.onclick = () => {
    pointcloudView.setViewMode("orbit");
    btnViewOrbit.className = "btn btn-blue";
    btnViewLidar.className = "btn btn-gray";
  };
  btnViewLidar.onclick = () => {
    pointcloudView.setViewMode("lidar");
    btnViewLidar.className = "btn btn-blue";
    btnViewOrbit.className = "btn btn-gray";
  };

  startStatusSocket();
}

main().catch((e) => {
  console.error(e);
  alert("초기화 실패: " + e);
});