_startRouter()

in polygerrit-ui/app/elements/core/gr-router/gr-router.ts [819:1115]

• 219 lines of code
• 7 McCabe index (conditional complexity)

  _startRouter() {
    const base = getBaseUrl();
    if (base) {
      page.base(base);
    }

    GerritNav.setup(
      (url, redirect?) => {
        if (redirect) {
          page.redirect(url);
        } else {
          page.show(url);
        }
      },
      params => this._generateUrl(params),
      params => this._generateWeblinks(params),
      x => x
    );

    page.exit('*', (_, next) => {
      if (!this._isRedirecting) {
        this.reporting.beforeLocationChanged();
      }
      this._isRedirecting = false;
      this._isInitialLoad = false;
      next();
    });

    // Remove the tracking param 'usp' (User Source Parameter) from the URL,
    // just to have users look at cleaner URLs.
    page((ctx, next) => {
      if (window.URLSearchParams) {
        const pathname = toPathname(ctx.canonicalPath);
        const searchParams = toSearchParams(ctx.canonicalPath);
        if (searchParams.has('usp')) {
          const usp = searchParams.get('usp');
          this.reporting.reportLifeCycle(LifeCycle.USER_REFERRED_FROM, {usp});
          searchParams.delete('usp');
          this._redirect(toPath(pathname, searchParams));
          return;
        }
      }
      next();
    });

    // Middleware
    page((ctx, next) => {
      document.body.scrollTop = 0;

      if (ctx.hash.match(RoutePattern.PLUGIN_SCREEN)) {
        // Redirect all urls using hash #/x/plugin/screen to /x/plugin/screen
        // This is needed to allow plugins to add basic #/x/ screen links to
        // any location.
        this._redirect(ctx.hash);
        return;
      }

      // Fire asynchronously so that the URL is changed by the time the event
      // is processed.
      setTimeout(() => {
        const detail: LocationChangeEventDetail = {
          hash: window.location.hash,
          pathname: window.location.pathname,
        };
        this.dispatchEvent(
          new CustomEvent('location-change', {
            detail,
            composed: true,
            bubbles: true,
          })
        );
      }, 1);
      next();
    });

    this._mapRoute(RoutePattern.ROOT, '_handleRootRoute');

    this._mapRoute(RoutePattern.DASHBOARD, '_handleDashboardRoute');

    this._mapRoute(
      RoutePattern.CUSTOM_DASHBOARD,
      '_handleCustomDashboardRoute'
    );

    this._mapRoute(
      RoutePattern.PROJECT_DASHBOARD,
      '_handleProjectDashboardRoute'
    );

    this._mapRoute(
      RoutePattern.LEGACY_PROJECT_DASHBOARD,
      '_handleLegacyProjectDashboardRoute'
    );

    this._mapRoute(RoutePattern.GROUP_INFO, '_handleGroupInfoRoute', true);

    this._mapRoute(
      RoutePattern.GROUP_AUDIT_LOG,
      '_handleGroupAuditLogRoute',
      true
    );

    this._mapRoute(
      RoutePattern.GROUP_MEMBERS,
      '_handleGroupMembersRoute',
      true
    );

    this._mapRoute(
      RoutePattern.GROUP_LIST_OFFSET,
      '_handleGroupListOffsetRoute',
      true
    );

    this._mapRoute(
      RoutePattern.GROUP_LIST_FILTER_OFFSET,
      '_handleGroupListFilterOffsetRoute',
      true
    );

    this._mapRoute(
      RoutePattern.GROUP_LIST_FILTER,
      '_handleGroupListFilterRoute',
      true
    );

    this._mapRoute(
      RoutePattern.GROUP_SELF,
      '_handleGroupSelfRedirectRoute',
      true
    );

    this._mapRoute(RoutePattern.GROUP, '_handleGroupRoute', true);

    this._mapRoute(RoutePattern.PROJECT_OLD, '_handleProjectsOldRoute');

    this._mapRoute(
      RoutePattern.REPO_COMMANDS,
      '_handleRepoCommandsRoute',
      true
    );

    this._mapRoute(RoutePattern.REPO_GENERAL, '_handleRepoGeneralRoute');

    this._mapRoute(RoutePattern.REPO_ACCESS, '_handleRepoAccessRoute');

    this._mapRoute(RoutePattern.REPO_DASHBOARDS, '_handleRepoDashboardsRoute');

    this._mapRoute(
      RoutePattern.BRANCH_LIST_OFFSET,
      '_handleBranchListOffsetRoute'
    );

    this._mapRoute(
      RoutePattern.BRANCH_LIST_FILTER_OFFSET,
      '_handleBranchListFilterOffsetRoute'
    );

    this._mapRoute(
      RoutePattern.BRANCH_LIST_FILTER,
      '_handleBranchListFilterRoute'
    );

    this._mapRoute(RoutePattern.TAG_LIST_OFFSET, '_handleTagListOffsetRoute');

    this._mapRoute(
      RoutePattern.TAG_LIST_FILTER_OFFSET,
      '_handleTagListFilterOffsetRoute'
    );

    this._mapRoute(RoutePattern.TAG_LIST_FILTER, '_handleTagListFilterRoute');

    this._mapRoute(
      RoutePattern.LEGACY_CREATE_GROUP,
      '_handleCreateGroupRoute',
      true
    );

    this._mapRoute(
      RoutePattern.LEGACY_CREATE_PROJECT,
      '_handleCreateProjectRoute',
      true
    );

    this._mapRoute(RoutePattern.REPO_LIST_OFFSET, '_handleRepoListOffsetRoute');

    this._mapRoute(
      RoutePattern.REPO_LIST_FILTER_OFFSET,
      '_handleRepoListFilterOffsetRoute'
    );

    this._mapRoute(RoutePattern.REPO_LIST_FILTER, '_handleRepoListFilterRoute');

    this._mapRoute(RoutePattern.REPO, '_handleRepoRoute');

    this._mapRoute(RoutePattern.PLUGINS, '_handlePassThroughRoute');

    this._mapRoute(
      RoutePattern.PLUGIN_LIST_OFFSET,
      '_handlePluginListOffsetRoute',
      true
    );

    this._mapRoute(
      RoutePattern.PLUGIN_LIST_FILTER_OFFSET,
      '_handlePluginListFilterOffsetRoute',
      true
    );

    this._mapRoute(
      RoutePattern.PLUGIN_LIST_FILTER,
      '_handlePluginListFilterRoute',
      true
    );

    this._mapRoute(RoutePattern.PLUGIN_LIST, '_handlePluginListRoute', true);

    this._mapRoute(
      RoutePattern.QUERY_LEGACY_SUFFIX,
      '_handleQueryLegacySuffixRoute'
    );

    this._mapRoute(RoutePattern.QUERY, '_handleQueryRoute');

    this._mapRoute(RoutePattern.CHANGE_ID_QUERY, '_handleChangeIdQueryRoute');

    this._mapRoute(RoutePattern.DIFF_LEGACY_LINENUM, '_handleLegacyLinenum');

    this._mapRoute(
      RoutePattern.CHANGE_NUMBER_LEGACY,
      '_handleChangeNumberLegacyRoute'
    );

    this._mapRoute(RoutePattern.DIFF_EDIT, '_handleDiffEditRoute', true);

    this._mapRoute(RoutePattern.CHANGE_EDIT, '_handleChangeEditRoute', true);

    this._mapRoute(RoutePattern.COMMENT, '_handleCommentRoute');

    this._mapRoute(RoutePattern.COMMENTS_TAB, '_handleCommentsRoute');

    this._mapRoute(RoutePattern.DIFF, '_handleDiffRoute');

    this._mapRoute(RoutePattern.CHANGE, '_handleChangeRoute');

    this._mapRoute(RoutePattern.CHANGE_LEGACY, '_handleChangeLegacyRoute');

    this._mapRoute(RoutePattern.AGREEMENTS, '_handleAgreementsRoute', true);

    this._mapRoute(
      RoutePattern.NEW_AGREEMENTS,
      '_handleNewAgreementsRoute',
      true
    );

    this._mapRoute(
      RoutePattern.SETTINGS_LEGACY,
      '_handleSettingsLegacyRoute',
      true
    );

    this._mapRoute(RoutePattern.SETTINGS, '_handleSettingsRoute', true);

    this._mapRoute(RoutePattern.REGISTER, '_handleRegisterRoute');

    this._mapRoute(RoutePattern.LOG_IN_OR_OUT, '_handlePassThroughRoute');

    this._mapRoute(
      RoutePattern.IMPROPERLY_ENCODED_PLUS,
      '_handleImproperlyEncodedPlusRoute'
    );

    this._mapRoute(RoutePattern.PLUGIN_SCREEN, '_handlePluginScreen');

    this._mapRoute(
      RoutePattern.DOCUMENTATION_SEARCH_FILTER,
      '_handleDocumentationSearchRoute'
    );

    // redirects /Documentation/q/* to /Documentation/q/filter:*
    this._mapRoute(
      RoutePattern.DOCUMENTATION_SEARCH,
      '_handleDocumentationSearchRedirectRoute'
    );

    // Makes sure /Documentation/* links work (doin't return 404)
    this._mapRoute(
      RoutePattern.DOCUMENTATION,
      '_handleDocumentationRedirectRoute'
    );

    // Note: this route should appear last so it only catches URLs unmatched
    // by other patterns.
    this._mapRoute(RoutePattern.DEFAULT, '_handleDefaultRoute');

    page.start();
  }