Refactor server and templates package

internal/dis/component/server/home/public.go

@@ -0,0 +1,44 @@
+package home
+
+import (
+	"context"
+	_ "embed"
+	"net/http"
+	"strings"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/assets"
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/server/templates"
+	"github.com/FAU-CDI/wisski-distillery/internal/status"
+	"github.com/FAU-CDI/wisski-distillery/pkg/httpx"
+)
+
+//go:embed "public.html"
+var publicHTML []byte
+var publicTemplate = templates.Parse[publicContext]("public.html", publicHTML, assets.AssetsDefault)
+
+type publicContext struct {
+	templates.BaseContext
+
+	Instances    []status.WissKI
+	SelfRedirect string
+}
+
+func (home *Home) publicHandler(ctx context.Context) http.Handler {
+	tpl := publicTemplate.Prepare(home.Dependencies.Templating, templates.BaseContextGaps{
+		Crumbs: []component.MenuItem{
+			{Title: "WissKI Distillery", Path: "/"},
+		},
+	})
+	return tpl.HTMLHandler(func(r *http.Request) (pc publicContext, err error) {
+		// only act on the root path!
+		if strings.TrimSuffix(r.URL.Path, "/") != "" {
+			return pc, httpx.ErrNotFound
+		}
+
+		pc.Instances = home.homeInstances.Get(nil)
+		pc.SelfRedirect = home.Config.SelfRedirect.String()
+
+		return
+	})
+}