/**
 * Copyright IBM Corp. 2021, 2026
 * SPDX-License-Identifier: BUSL-1.1
 */

import Controller from '@ember/controller';
import { service } from '@ember/service';
import { getOwner } from '@ember/application';
import { action } from '@ember/object';
import { tracked } from '@glimmer/tracking';
import { defaultValidator } from 'ember-a11y-refocus';
import { paramValueFinder } from 'core/utils/param-value-finder';

export default class ApplicationController extends Controller {
  // =services

  @service clusterUrl;
  @service flashMessages;
  @service session;
  @service('browser/window') window;
  @service router;
  @service scope;
  @service intl;
  @service terminal;

  // =attributes

  @tracked isLoggingOut = false;
  @tracked isAppQuitting = false;

  removeOnAppQuitListener;

  constructor() {
    super(...arguments);
    // Listen for when user attempts to quit app
    // Setup removeOnAppQuitListener to destroy the listener afterwards
    this.removeOnAppQuitListener = this.window.desktop?.app.onAppQuit(() => {
      this.isAppQuitting = true;
      this.hideTerminalViewForModal();
    });
  }

  /**
   * Returns display name and icon for current scope.
   * @type {object}
   */
  get currentScope() {
    if (this.scope.org?.isOrg) {
      return { name: this.scope.org.displayName, icon: 'org' };
    } else {
      return { name: this.intl.t('titles.global'), icon: 'globe' };
    }
  }

  /**
   * Shows side navigation only for routes nested under a scope
   * and if user has been authenticated.
   * @type {boolean}
   */
  get showSideNav() {
    return (
      this.router.currentRouteName.startsWith('scopes.scope') &&
      this.session.isAuthenticated
    );
  }

  // =actions

  /**
   * Stop all active/pending target sessions
   * Logout or close app
   */
  @action
  async confirmCloseSessions() {
    await window.desktop.session.stopAllSessions();
    if (this.isAppQuitting) {
      this.isAppQuitting = false;
      this.close();
    } else {
      // this.session.invalidate() comes from Ember Simple Auth BaseSessionService
      this.session.invalidate();
    }

    this.isLoggingOut = false;
  }

  /**
   * Only renders the signout modal if target sessions are running
   */
  @action
  async showModalOrLogout() {
    const hasRunningSessions =
      await window.desktop.session.hasRunningSessions();
    if (hasRunningSessions) {
      this.isLoggingOut = true;
      this.hideTerminalViewForModal();
    } else {
      this.session.invalidate();
    }
  }

  /**
   * Invalidates the session and navigates to the cluster-url route.
   * The cluster URL is preserved so that upon reload the user is directed
   * back to the authentication screen for the same cluster.
   */
  @action
  disconnect() {
    this.session.invalidate();
    this.router.replaceWith('cluster-url');
  }

  @action
  minimize() {
    window.desktop.windowAction.minimizeWindow();
  }

  @action
  toggleFullScreen() {
    window.desktop.windowAction.toggleFullscreenWindow();
  }

  @action
  close() {
    window.desktop.windowAction.closeWindow();
  }

  /**
   * Applies the specified color theme to the root ember element.
   * @param {string} theme - "light", "dark", or nullish (system default)
   */
  @action
  toggleTheme(theme) {
    const rootElementSelector = getOwner(this).rootElement;
    const rootEl = getOwner(this)
      .lookup('service:-document')
      .querySelector(rootElementSelector);
    this.session.set('data.theme', theme);
    switch (theme) {
      case 'light':
        rootEl.classList.add('rose-theme-light');
        rootEl.classList.remove('rose-theme-dark');
        break;
      case 'dark':
        rootEl.classList.add('rose-theme-dark');
        rootEl.classList.remove('rose-theme-light');
        break;
      default:
        rootEl.classList.remove('rose-theme-dark');
        rootEl.classList.remove('rose-theme-light');
    }
  }

  @action
  cancel() {
    this.isLoggingOut = false;
    this.isAppQuitting = false;
    if (this.terminal.isTerminalTabActive) {
      this.terminal.displayTerminalView();
    }
  }

  willDestroy() {
    super.willDestroy(...arguments);
    this.removeOnAppQuitListener?.();
  }

  /**
   * Add custom route change validation to prevent refocus when
   * user is attempting to search, filter, or sort.
   * @param {object} transition
   * @returns {boolean}
   */
  customRouteChangeValidator(transition) {
    if (!transition.to || !transition.from) {
      return true;
    }
    if (transition.to.name === transition.from.name) {
      const toParams = paramValueFinder(
        transition.to.localName,
        transition.to.parent,
      );
      const fromParams = paramValueFinder(
        transition.from.localName,
        transition.from.parent,
      );
      // Return false to prevent refocus when routes have equivalent dynamic segments (params).
      return JSON.stringify(toParams) !== JSON.stringify(fromParams);
    }
    return defaultValidator(transition);
  }

  /**
   * Hides terminal if open and on terminal tab of Session details page for logout/app quit modal
   */
  hideTerminalViewForModal() {
    if (this.terminal.isTerminalTabActive) {
      this.terminal.hideTerminalView();
    }
  }

  /**
   * Handles side nav toggle to hide/show terminal based on side nav state
   * @param {boolean} isMinimized - Whether the side nav is minimized i.e. collapsed
   */
  @action
  handleSideNavToggle(isMinimized) {
    this.terminal.setSideNavMinimized(isMinimized);

    // update terminal view if we're on the terminal tab
    if (this.terminal.isTerminalTabActive) {
      if (isMinimized) {
        // Side nav is collapsed, display terminal view
        this.terminal.displayTerminalView();
      } else {
        // Side nav is expanded, hide terminal view
        this.terminal.hideTerminalView();
      }
    }
  }
}