"use strict";

const managedDialogOrigins = new WeakMap();

function managedDialogFocusable(dialog) {
  if (!dialog) return [];
  return [...dialog.querySelectorAll('button:not([disabled]), [href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])')]
    .filter(el => !el.hidden && el.getClientRects().length > 0);
}

function openManagedDialog(dialog, opener = document.activeElement) {
  if (!dialog) return;
  if (opener instanceof HTMLElement && !dialog.contains(opener)) managedDialogOrigins.set(dialog, opener);
  if (!dialog.hasAttribute("tabindex")) dialog.tabIndex = -1;
  dialog.classList.remove("hidden");
  dialog.setAttribute("aria-hidden", "false");
  requestAnimationFrame(() => {
    const focusables = managedDialogFocusable(dialog);
    (focusables[0] || dialog).focus?.({ preventScroll: true });
  });
}

function closeManagedDialog(dialog) {
  if (!dialog) return;
  dialog.classList.add("hidden");
  dialog.setAttribute("aria-hidden", "true");
  const origin = managedDialogOrigins.get(dialog);
  managedDialogOrigins.delete(dialog);
  if (origin?.isConnected) requestAnimationFrame(() => origin.focus?.({ preventScroll: true }));
}

function managedDialogVisible(dialog) {
  if (!dialog || dialog.hidden || dialog.getAttribute("aria-hidden") === "true") return false;
  if (dialog.classList.contains("hidden") || dialog.closest(".hidden")) return false;
  return dialog.getClientRects().length > 0;
}

function topVisibleDialog() {
  const dialogs = [...document.querySelectorAll('[role="dialog"], [role="alertdialog"]')].filter(managedDialogVisible);
  return dialogs[dialogs.length - 1] || null;
}

document.addEventListener("keydown", (event) => {
  const dialog = topVisibleDialog();
  if (!dialog) return;
  if (event.key === "Escape") {
    event.preventDefault();
    event.stopPropagation();
    dialog.dispatchEvent(new CustomEvent("tarinai:dialog-close-request"));
    return;
  }
  if (event.key !== "Tab") return;
  const focusables = managedDialogFocusable(dialog);
  if (!focusables.length) {
    event.preventDefault();
    dialog.focus?.();
    return;
  }
  const first = focusables[0];
  const last = focusables[focusables.length - 1];
  if (event.shiftKey && document.activeElement === first) {
    event.preventDefault();
    last.focus();
  } else if (!event.shiftKey && document.activeElement === last) {
    event.preventDefault();
    first.focus();
  } else if (!dialog.contains(document.activeElement)) {
    event.preventDefault();
    first.focus();
  }
}, true);

window.TarinaiManagedDialogs = Object.freeze({ open: openManagedDialog, close: closeManagedDialog });

function resizeCanvas() {
  const rect = canvas.getBoundingClientRect();
  const perfScale = window.TarinaiPerf.dprScale();
  const dpr = Math.max(0.5, Math.min((window.devicePixelRatio || 1) * perfScale, 2));
  const nextW = Math.max(1, Math.floor(rect.width * dpr));
  const nextH = Math.max(1, Math.floor(rect.height * dpr));
  if (canvas.width === nextW && canvas.height === nextH && uiCache.canvasDpr === dpr) return;
  uiCache.canvasDpr = dpr;
  canvas.width = nextW;
  canvas.height = nextH;
  ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
  ctx.fillStyle = "#cfe3d3";
  ctx.fillRect(0, 0, Math.max(1, rect.width), Math.max(1, rect.height));
  world.setViewportSize(Math.max(1, rect.width), Math.max(1, rect.height), { resizeWorld: true, scaleContents: true });
  uiCache.lastChartDraw = "";
  if (typeof render === "function") render();
}

function applyFieldLayout(fieldType = world.fieldType || "garden") {
  const field = FIELD_TYPES?.[fieldType] || FIELD_TYPES.garden;
  const layout = FIELD_LAYOUT;
  const root = document.documentElement;
  root.style.setProperty("--field-height", layout.height);
  root.style.setProperty("--field-min-height", layout.minHeight);
  root.style.setProperty("--field-mobile-height", layout.mobileHeight);
  root.style.setProperty("--field-mobile-min-height", layout.mobileMinHeight);
  world.fieldType = field.id;
  const rect = canvas.getBoundingClientRect();
  world.setViewportSize(rect.width, rect.height, { resizeWorld: true, scaleContents: true });
  resizeCanvas();
}

function normalizeResetPresetId(presetId = "default") {
  if (window.TarinaiResetPresets?.normalize) return window.TarinaiResetPresets.normalize(presetId);
  return new Set(["empty", "default", "athletic", "crowded", "family", "war", "happy", "hair_trigger"]).has(String(presetId || "")) ? String(presetId) : "default";
}

function syncFieldDialogChoices() {
  const fieldType = FIELD_TYPES?.[uiCache.resetFieldType]?.id || world?.fieldType || "garden";
  const presetId = normalizeResetPresetId(uiCache.resetPreset || "default");
  uiCache.resetFieldType = fieldType;
  uiCache.resetPreset = presetId;
  ui.fieldDialog?.querySelectorAll("[data-field-type]").forEach((btn) => {
    const active = btn.dataset.fieldType === fieldType;
    btn.classList.toggle("active", active);
    btn.setAttribute("aria-pressed", active ? "true" : "false");
  });
  ui.fieldDialog?.querySelectorAll("[data-reset-preset]").forEach((btn) => {
    const active = btn.dataset.resetPreset === presetId;
    btn.classList.toggle("active", active);
    btn.setAttribute("aria-pressed", active ? "true" : "false");
  });
}

function selectResetFieldType(fieldType = "garden") {
  uiCache.resetFieldType = FIELD_TYPES?.[fieldType]?.id || "garden";
  syncFieldDialogChoices();
}

function selectResetPreset(presetId = "default") {
  uiCache.resetPreset = normalizeResetPresetId(presetId);
  syncFieldDialogChoices();
}

function openFieldDialog() {
  uiCache.resetFieldType = FIELD_TYPES?.[world?.fieldType]?.id || uiCache.resetFieldType || "garden";
  uiCache.resetPreset = normalizeResetPresetId(uiCache.resetPreset || "default");
  syncFieldDialogChoices();
  openManagedDialog(ui.fieldDialog);
}

function closeFieldDialog() {
  closeManagedDialog(ui.fieldDialog);
}

function hydrateLazyImages(root) {
  const scope = root || document;
  for (const img of scope.querySelectorAll("img[data-src]")) {
    if (!img.getAttribute("src")) img.setAttribute("src", img.dataset.src || "");
  }
}

function renderEcologyCards() {
  if (!ui.ecologyGrid || ui.ecologyGrid.dataset.ready === "1") return;
  const cards = window.TEXT_CATALOG?.ecologyCards || [];
  ui.ecologyGrid.innerHTML = cards.map(card => `
        <section class="ecology-card">
          <img data-src="${window.TarinaiUIHelpers.htmlEscape(card.image || "assets/sprites/tarinai_01_smile.webp")}" loading="lazy" decoding="async" alt="">
          <div><strong>${window.TarinaiUIHelpers.htmlEscape(card.title || "")}</strong><p>${window.TarinaiUIHelpers.htmlEscape(card.text || "")}</p></div>
        </section>`).join("");
  ui.ecologyGrid.dataset.ready = "1";
}

function openEcologyDialog() {
  renderEcologyCards();
  hydrateLazyImages(ui.ecologyDialog);
  openManagedDialog(ui.ecologyDialog);
}

function closeEcologyDialog() {
  closeManagedDialog(ui.ecologyDialog);
}

function openArchiveResetDialog() {
  openManagedDialog(ui.archiveResetDialog);
}

function closeArchiveResetDialog() {
  closeManagedDialog(ui.archiveResetDialog);
}

function resetWithField(fieldType, presetId = uiCache.resetPreset || "default") {
  const field = FIELD_TYPES?.[fieldType] || FIELD_TYPES.garden;
  const preset = normalizeResetPresetId(presetId);
  uiCache.resetFieldType = field.id;
  uiCache.resetPreset = preset;
  closeFieldDialog();
  applyFieldLayout(field.id);
  world.reset(null, field.id, preset);
  uiCache.archiveVersion = "";
  renderLog(world.logs);
  renderArchive();
  renderStats();
  render();
}


function resizeFieldFromWheel(e) {
  const itemType = toolItemType(world?.tool || "");
  if ((e.shiftKey || e.altKey) && itemType && isRotatableItemType(itemType) && world?.rotateToolAngle) {
    e.preventDefault();
    const step = (e.altKey ? 1 : 5) * Math.PI / 180;
    world.rotateToolAngle(itemType, (e.deltaY > 0 ? 1 : -1) * step);
    render();
    return;
  }
  if (!world.setFieldZoom) return;
  e.preventDefault();
  const rect = canvas.getBoundingClientRect();
  const sx = e.clientX - rect.left;
  const sy = e.clientY - rect.top;
  const focus = world.screenToWorld ? world.screenToWorld(sx, sy) : { x: sx, y: sy };
  const factor = e.deltaY > 0 ? 1 / 1.08 : 1.08;
  if (!world.setFieldZoom((world.fieldZoom || 1) * factor)) return;
  const off = world.fieldScreenOffset ? world.fieldScreenOffset() : { x: 0, y: 0 };
  const scale = world.viewScale ? world.viewScale() : 1;
  world.cameraX = focus.x - (sx - off.x) / scale;
  world.cameraY = focus.y - (sy - off.y) / scale;
  world.clampCamera?.();
  render();
}

function selectTool(tool) {
  const wasCopyArmed = world.tool === "copy" && tool === "copy" && Boolean(world.copyBuffer);
  const result = window.TarinaiCommands.dispatch(world, { type: "tool.select", toolId: tool });
  const activeTool = result?.toolId || world.tool || tool;
  if (!["rope", "rod", "spring", "wire", "insulated_wire"].includes(activeTool)) world.pendingLinkEndpoint = null;
  if (activeTool !== "copy") world.copyBuffer = null;
  else if (wasCopyArmed) {
    world.copyBuffer = null;
    showToast("\u30b3\u30d4\u30fc\u3092\u89e3\u9664\u3057\u307e\u3057\u305f\u3002");
  }
  for (const btn of uiCache.toolButtons) {
    btn.classList.toggle("selected", btn.dataset.tool === activeTool);
  }
  syncToolSizeBadges();
  canvas.style.cursor = window.TarinaiUIInputShared.cursorForTool(activeTool) || (activeTool === "observe" ? "default" : (activeTool === "pinch" ? "grab" : (activeTool === "poke" || activeTool === "delete" ? "pointer" : "crosshair")));
}

function showToast(text) {
  ui.toast.textContent = text;
  ui.toast.classList.remove("hidden");
  clearTimeout(showToast._timer);
  showToast._timer = setTimeout(() => ui.toast.classList.add("hidden"), 1400);
}

function syncTopButtons() {
  ui.pauseBtn.textContent = world.paused ? "\u518d\u958b" : "\u4e00\u6642\u505c\u6b62";
  if (ui.speedSelect) ui.speedSelect.value = String(world.speed);
  if (ui.speedMenuBtn) ui.speedMenuBtn.textContent = `速度 ×${world.speed}`;
  for (const option of ui.speedMenuPanel?.querySelectorAll?.("[data-speed-value]") || []) {
    const active = Number(option.dataset.speedValue) === Number(world.speed);
    option.classList.toggle("active", active);
    option.setAttribute("aria-checked", active ? "true" : "false");
  }
  syncAudioControls();
  syncArchiveUpdateButton();
}

function archiveAutoUpdateEnabled() {
  return Boolean(uiCache.archiveUpdateEnabled);
}

function syncArchiveUpdateButton() {
  const btn = ui.archiveUpdateToggleBtn;
  if (!btn) return;
  const on = archiveAutoUpdateEnabled();
  btn.textContent = on ? "\u66f4\u65b0 ON" : "\u66f4\u65b0 OFF";
  btn.classList.toggle("active", on);
  btn.setAttribute("aria-pressed", on ? "true" : "false");
}

function setArchiveUpdateEnabled(on) {
  uiCache.archiveUpdateEnabled = Boolean(on);
  syncArchiveUpdateButton();
  if (uiCache.archiveUpdateEnabled) {
    uiCache.archiveVersion = "";
    uiCache.archiveFamilyVersion = null;
    uiCache.archiveViewActivated = true;
    world.familyTreeDirty = true;
    renderArchive?.({ userRequested: true });
    showToast("\u5bb6\u7cfb\u56f3\u306e\u66f4\u65b0\u3092ON\u306b\u3057\u307e\u3057\u305f\u3002");
  } else {
    if (uiCache.archiveRenderTimer) { clearTimeout(uiCache.archiveRenderTimer); uiCache.archiveRenderTimer = 0; }
    uiCache.archiveScheduled = false;
    showToast("\u5bb6\u7cfb\u56f3\u306e\u66f4\u65b0\u3092OFF\u306b\u3057\u307e\u3057\u305f\u3002");
  }
}