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// Event-page entry point. Wires browser events to the grouping engine.

import {
  evaluateTab,
  handleGroupChange,
  handleGroupRemoved,
  handleTabRemoved,
  reorganizeAll,
} from "./src/grouper.js";

// React to navigations (incl. SPA url changes) and pin state, and detect manual
// group moves. No event filter: `properties` filtering for groupId isn't
// portable across versions, so we branch cheaply on changeInfo instead.
browser.tabs.onUpdated.addListener((tabId, changeInfo, tab) => {
  if ("groupId" in changeInfo) {
    handleGroupChange(tabId);
  }
  if ("url" in changeInfo || "pinned" in changeInfo) {
    evaluateTab(tab);
  }
});

// Firefox auto-removes empty groups; keep our instance map in sync.
if (browser.tabGroups?.onRemoved) {
  browser.tabGroups.onRemoved.addListener((group) => handleGroupRemoved(group));
}

browser.tabs.onRemoved.addListener((tabId) => handleTabRemoved(tabId));

// Toolbar button: open the options page. Without a `default_popup`, the click
// fires onClicked instead of opening a popup.
browser.action.onClicked.addListener(() => browser.runtime.openOptionsPage());

// Options-page commands.
browser.runtime.onMessage.addListener((message) => {
  if (message?.type === "reorganize") {
    return reorganizeAll().then(() => ({ ok: true }));
  }
  return undefined;
});