// Outlook Relook — Behavior Patches
// JS-based UX improvements, each gated by a setting key.

window.OutlookRelook = window.OutlookRelook || {};

window.OutlookRelook.Behavior = (function () {
  'use strict';

  var OR = window.OutlookRelook;
  var currentSettings = {};
  var cleanupFns = [];

  // --- Auto-collapse ribbon on page load ---
  function setupAutoCollapseRibbon() {
    if (!currentSettings.autoCollapseRibbon) return;

    // Wait for OWA to finish rendering, then collapse the ribbon
    var timer = setTimeout(function () {
      var elements = OR.resolveSelector('ribbon-collapse-button');
      for (var i = 0; i < elements.length; i++) {
        if (elements[i].getAttribute('aria-expanded') === 'true') {
          elements[i].click();
          console.log('[Outlook Relook] Auto-collapsed ribbon');
        }
      }
    }, 2000);

    cleanupFns.push(function () { clearTimeout(timer); });
  }

  // --- Remember sidebar collapsed/expanded state ---
  function setupRememberSidebar() {
    if (!currentSettings.rememberSidebarState) return;

    chrome.storage.local.get({ sidebarCollapsed: false }, function (result) {
      if (result.sidebarCollapsed) {
        var timer = setTimeout(function () {
          var pane = OR.resolveSelector('folder-pane');
          for (var i = 0; i < pane.length; i++) {
            var toggle = pane[i].closest('[aria-expanded]') || pane[i].querySelector('[aria-expanded]');
            if (toggle && toggle.getAttribute('aria-expanded') === 'true') {
              toggle.click();
            }
          }
        }, 2000);
        cleanupFns.push(function () { clearTimeout(timer); });
      }
    });

    // Watch for sidebar toggle changes
    var sidebarObserver = new MutationObserver(function () {
      var pane = OR.resolveSelector('folder-pane');
      if (pane.length > 0) {
        var isVisible = pane[0].offsetWidth > 50;
        chrome.storage.local.set({ sidebarCollapsed: !isVisible });
      }
    });

    var timer2 = setTimeout(function () {
      var pane = OR.resolveSelector('folder-pane');
      if (pane.length > 0 && pane[0].parentElement) {
        sidebarObserver.observe(pane[0].parentElement, { attributes: true, subtree: true });
      }
    }, 3000);

    cleanupFns.push(function () {
      clearTimeout(timer2);
      sidebarObserver.disconnect();
    });
  }

  // --- Suppress contact card hover popups ---
  function setupSuppressContactHover() {
    if (!currentSettings.suppressContactHover) return;

    var handler = function (e) {
      // Check if the hovered element or its ancestors trigger a contact card
      var target = e.target.closest('[data-lpc-hover-target], [aria-haspopup="dialog"]');
      if (target) {
        e.stopPropagation();
        e.preventDefault();
      }
    };

    document.addEventListener('mouseenter', handler, true);
    cleanupFns.push(function () { document.removeEventListener('mouseenter', handler, true); });
  }

  // --- Auto-advance to next email after delete ---
  function setupAutoAdvance() {
    if (!currentSettings.autoAdvanceAfterDelete) return;

    var handler = function (e) {
      // Detect delete key press
      if (e.key === 'Delete' || e.key === 'Backspace') {
        var selected = document.querySelector(
          '[role="option"][aria-selected="true"], [role="listitem"][aria-selected="true"]'
        );
        if (selected) {
          var next = selected.nextElementSibling;
          if (next) {
            // Wait for OWA to process the delete, then focus next
            setTimeout(function () {
              next.click();
              next.focus();
            }, 200);
          }
        }
      }
    };

    document.addEventListener('keydown', handler, true);
    cleanupFns.push(function () { document.removeEventListener('keydown', handler, true); });
  }

  // --- Auto-dismiss notification toasts ---
  function setupAutoDismissToasts() {
    if (currentSettings.autoDismissToasts === 'off') return;
    var delay = parseInt(currentSettings.autoDismissToasts, 10) * 1000;
    if (isNaN(delay) || delay <= 0) return;

    var toastObserver = new MutationObserver(function (mutations) {
      for (var m = 0; m < mutations.length; m++) {
        var addedNodes = mutations[m].addedNodes;
        for (var n = 0; n < addedNodes.length; n++) {
          var node = addedNodes[n];
          if (node.nodeType !== 1) continue;
          var toasts = [];
          if (node.matches && node.matches('[role="alert"], [role="status"][aria-live]')) {
            toasts.push(node);
          }
          if (node.querySelectorAll) {
            var found = node.querySelectorAll('[role="alert"], [role="status"][aria-live]');
            for (var t = 0; t < found.length; t++) toasts.push(found[t]);
          }

          for (var i = 0; i < toasts.length; i++) {
            (function (toast) {
              setTimeout(function () {
                // Try to find a dismiss button
                var dismiss = toast.querySelector('[aria-label*="Close" i], [aria-label*="Dismiss" i]');
                if (dismiss) {
                  dismiss.click();
                } else {
                  toast.style.display = 'none';
                }
              }, delay);
            })(toasts[i]);
          }
        }
      }
    });

    toastObserver.observe(document.body, { childList: true, subtree: true });
    cleanupFns.push(function () { toastObserver.disconnect(); });
  }

  // --- Reposition toast notifications ---
  function setupToastPosition() {
    if (currentSettings.toastPosition === 'bottom-left') return; // OWA default

    var style = document.createElement('style');
    style.id = 'or-toast-position';
    style.textContent = [
      '[role="alert"], [role="status"][aria-live] {',
      '  position: fixed !important;',
      '  top: 8px !important;',
      '  right: 8px !important;',
      '  bottom: auto !important;',
      '  left: auto !important;',
      '  z-index: 999999 !important;',
      '}'
    ].join('\n');
    document.head.appendChild(style);
    cleanupFns.push(function () { style.remove(); });
  }

  // --- Sticky Reply/Forward bar ---
  function setupStickyReplyBar() {
    if (!currentSettings.stickyReplyBar) return;

    var style = document.createElement('style');
    style.id = 'or-sticky-reply';
    style.textContent = [
      '[aria-label*="Reply all" i][role="button"],',
      '[aria-label*="Reply" i][role="button"],',
      '[aria-label*="Forward" i][role="button"] {',
      '  position: sticky !important;',
      '  bottom: 0 !important;',
      '  z-index: 10 !important;',
      '  background-color: var(--or-bg-primary, #fff) !important;',
      '}'
    ].join('\n');
    document.head.appendChild(style);
    cleanupFns.push(function () { style.remove(); });
  }

  // --- Auto-resize compose window ---
  function setupAutoResizeCompose() {
    if (!currentSettings.autoResizeCompose) return;

    var composeObserver = new MutationObserver(function (mutations) {
      for (var m = 0; m < mutations.length; m++) {
        var addedNodes = mutations[m].addedNodes;
        for (var n = 0; n < addedNodes.length; n++) {
          var node = addedNodes[n];
          if (node.nodeType !== 1) continue;
          var composeWindows = [];
          if (node.matches && node.matches('[aria-label*="compose" i][role="dialog"], [aria-label*="New message" i]')) {
            composeWindows.push(node);
          }
          if (node.querySelectorAll) {
            var found = node.querySelectorAll('[aria-label*="compose" i][role="dialog"], [aria-label*="New message" i]');
            for (var i = 0; i < found.length; i++) composeWindows.push(found[i]);
          }

          for (var w = 0; w < composeWindows.length; w++) {
            composeWindows[w].style.minHeight = '60vh';
            composeWindows[w].style.height = '60vh';
            console.log('[Outlook Relook] Auto-resized compose window');
          }
        }
      }
    });

    composeObserver.observe(document.body, { childList: true, subtree: true });
    cleanupFns.push(function () { composeObserver.disconnect(); });
  }

  // --- Throttle desktop notifications ---
  function setupThrottleNotifications() {
    if (!currentSettings.throttleNotifications) return;

    var OrigNotification = window.Notification;

    // Only patch if Notification API exists
    if (!OrigNotification) return;

    var lastNotificationTime = 0;
    var MIN_INTERVAL = 30000; // 30 seconds between notifications

    window.Notification = function (title, options) {
      var now = Date.now();
      if (now - lastNotificationTime < MIN_INTERVAL) {
        console.log('[Outlook Relook] Throttled notification: "' + title + '"');
        return {};
      }
      lastNotificationTime = now;
      return new OrigNotification(title, options);
    };
    window.Notification.permission = OrigNotification.permission;
    window.Notification.requestPermission = OrigNotification.requestPermission.bind(OrigNotification);

    cleanupFns.push(function () {
      window.Notification = OrigNotification;
    });
  }

  // --- Public API ---

  function start(settings) {
    currentSettings = settings;

    setupAutoCollapseRibbon();
    setupRememberSidebar();
    setupSuppressContactHover();
    setupAutoAdvance();
    setupAutoDismissToasts();
    setupToastPosition();
    setupStickyReplyBar();
    setupAutoResizeCompose();
    setupThrottleNotifications();

    console.log('[Outlook Relook] Behavior patches applied');
  }

  function updateSettings(settings) {
    // Tear down existing behaviors and re-apply
    stop();
    currentSettings = settings;
    start(settings);
  }

  function stop() {
    for (var i = 0; i < cleanupFns.length; i++) {
      try { cleanupFns[i](); } catch (e) { /* ignore */ }
    }
    cleanupFns = [];
  }

  return { start: start, updateSettings: updateSettings, stop: stop };
})();