consul/ui/packages/consul-ui/app/templates/application.hbs

<Route @name={{routeName}} as |route|>

  {{! Add the a11y route announcer }}
  <route.Announcer @title="Consul" />
  {{! Tell CSS what we have enabled }}
  {{#if (can "use acls")}}
  {{document-attrs class="has-acls"}}
  {{/if}}
  {{#if (can "use nspaces")}}
  {{document-attrs class="has-nspaces"}}
  {{/if}}
  {{#if (can "use partitions")}}
  {{document-attrs class="has-partitions"}}
  {{/if}}

  {{! Listen out for blocking query/client setting changes }}
  <DataSource @src={{uri 'settings://consul:client' }} @onchange={{route-action "onClientChanged" }} />

  {{! Tell CSS about our theme }}
  <DataSource @src={{uri 'settings://consul:theme' }} as |source|>
    {{#each-in source.data as |key value|}}
    {{#if (and value (includes key (array "color-scheme" "contrast")))}}
    {{document-attrs class=(concat 'prefers-' key '-' value)}}
    {{/if}}
    {{/each-in}}
  </DataSource>

  {{! If ACLs are enabled try get a token }}
  {{#if (can "use acls")}}
  <DataSource @src={{uri 'settings://consul:token' }} @onchange={{action (mut token) value="data" }} />
  {{/if}}


  {{#if (not-eq route.currentName 'oauth-provider-debug')}}

  {{! redirect if we aren't on a URL with dc information }}
  {{#if (eq route.currentName 'index')}}
  {{! until we get to the dc route we don't know any permissions }}
  {{! as we don't know the dc, any inital permission based }}
  {{! redirects are in the dc.show route}}

  {{! 2022-04-15: Temporarily reverting the services page to the default }}
  {{did-insert (route-action 'replaceWith' 'dc.services.index'
  (hash
  dc=(env 'CONSUL_DATACENTER_LOCAL')
  )
  )}}
  {{else}}
  {{! If we are notfound, guess the params we need }}
  {{#if (eq route.currentName 'notfound')}}
  <DataSource @src={{uri '/*/*/*/notfound/${path}' (hash path=route.params.notfound ) }} @onchange={{action (mut
    notfound) value="data" }} />
  {{/if}}

  {{! Make sure we guess and default to the right params when not found }}
  {{#let
  (if (can "use partitions") (or route.params.partition notfound.partition token.Partition '') '')
  (if (can "use nspaces") (or route.params.nspace notfound.nspace token.Namespace '') '')
  as |partition nspace|}}

  {{! Make sure we have enough to show the app chrome}}
  {{! Don't show anything until we have a list of DCs }}
  <DataSource @src={{uri '/*/*/*/datacenters' }} as |dcs|>
    {{! Once we have a list of DCs make sure the DC we are asking for exists }}
    {{! If not use the DC that the UI is running in }}
    {{#let

    (or

    (if nofound.dc
    (object-at 0 (cached-model
    'dc'
    (hash
    Name=notfound.dc
    )
    )
    )
    )

    (object-at 0 (cached-model
    'dc'
    (hash
    Name=route.params.dc
    )
    )
    )

    (hash
    Name=(env "CONSUL_DATACENTER_LOCAL")
    )

    )

    dcs.data

    as |dc dcs|}}
    {{#if (and (gt dc.Name.length 0) dcs)}}

    {{! figure out our current DC and convert it to a model }}
    <DataSource @src={{uri '/${partition}/*/${dc}/datacenter-cache/${name}' (hash dc=dc.Name partition=partition
      name=dc.Name ) }} as |dc|>
      {{#if dc.data}}
      <HashicorpConsul id="wrapper" @dcs={{dcs}} @dc={{dc.data}} @partition={{partition}} @nspace={{nspace}}
        @user={{hash token=token }} @onchange={{action "reauthorize" }} as |consul|>

        {{#if error}}
        {{! If we got an error from anything, show an error page }}
        <AppError @error={{error}} @login={{consul.login.open}} />
        {{else}}
        {{! Otherwise show the rest of the app}}
        <Outlet @name="application" @model={{hash app=consul user=(hash token=token ) dc=dc.data dcs=dcs }} as |o|>
          {{outlet}}
        </Outlet>

        {{! loading component for when we need it}}
        <Consul::Loader class="view-loader" />
        {{/if}}

      </HashicorpConsul>
      {{/if}}
    </DataSource>
    {{/if}}
    {{/let}}
  </DataSource>
  {{/let}}
  {{/if}}
  {{else}}
  {{! Routes with no main navigation }}
  <Outlet @name="application" @model={{hash user=(hash token=token ) }} as |o|>
    {{outlet}}
  </Outlet>
  {{/if}}
</Route>