user panel: Add admin interface button

internal/dis/component/auth/panel/templates/user.html

@@ -31,6 +31,7 @@
 </div>
 {{ end }}
 
+{{ $showAdminURLs := .ShowAdminURLs }}
 <div class="pure-u-1">
     <h2>Your WissKIs</h2>
     <p>
@@ -53,6 +54,11 @@
                         <th>
                             Admin
                         </th>
+                        {{ if $showAdminURLs }}
+                            <th>
+                                Distillery Admin Link
+                            </th>
+                        {{ end }}
                     </tr>
                 </thead>
                 <tbody>
@@ -69,6 +75,13 @@
                         <td>
                             {{ $grant.DrupalAdminRole }}
                         </td>
+                        {{ if $showAdminURLs }}
+                            <td>
+                                <a href="{{ $grant.AdminURL }}" class="pure-button" target="_blank" rel="noopener noreferer">
+                                    {{ $grant.AdminURL }}
+                                </a>
+                            </td>
+                        {{ end }}
                     </tr>
                     {{ end }}
                 </tbody>

internal/dis/component/auth/panel/user.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
 	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/auth"
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/auth/scopes"
 	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/assets"
 	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/templating"
 	"github.com/FAU-CDI/wisski-distillery/internal/models"
@@ -26,6 +27,7 @@ type userContext struct {
 	templating.RuntimeFlags
 	*auth.AuthUser
 
+	ShowAdminURLs bool
 	Grants        []GrantWithURL
 }
 
@@ -34,6 +36,10 @@ type GrantWithURL struct {
 	URL template.URL
 }
 
+func (g GrantWithURL) AdminURL() template.URL {
+	return template.URL("/admin/instance/" + g.Slug)
+}
+
 func (panel *UserPanel) routeUser(ctx context.Context) http.Handler {
 
 	tpl := userTemplate.Prepare(
@@ -55,6 +61,8 @@ func (panel *UserPanel) routeUser(ctx context.Context) http.Handler {
 			return uc, nil, err
 		}
 
+		uc.ShowAdminURLs = panel.Dependencies.Auth.CheckScope("", scopes.ScopeAdminLoggedIn, r) == nil
+
 		// replace the totp action in the menu
 		var totpAction component.MenuItem
 		if uc.AuthUser.IsTOTPEnabled() {