open-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}}

{{! Tell CSS about our theme }}
<DataSource
  @src={{uri 'settings://consul:theme'}}
as |source|>
{{#each-in source.data as |key value|}}
  {{#if (and value (contains 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}}

{{! redirect if we aren't on a URL with dc information }}
{{#if (eq route.currentName 'index')}}
  {{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 'default') 'default')
  (if (can "use nspaces") (or route.params.nspace notfound.nspace token.Namespace 'default') 'default')
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

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

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

    (env "CONSUL_DATACENTER_LOCAL")

  )

  dcs.data

as |dc dcs|}}

  {{#if (and (gt dc.length 0) dcs nspace partition)}}

    {{! figure out our current DC and convert it to a model }}
    <DataSource
      @src={{uri '/${partition}/*/${dc}/datacenter/${name}'
        (hash
          dc=dc
          partition=partition
          name=dc
        )
      }}
    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}}
</Route>