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>