Add cron tasks to distillery

internal/dis/component/control/home/cron.go

@@ -0,0 +1,76 @@
+package home
+
+import (
+	"context"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+)
+
+type UpdateInstanceList struct {
+	component.Base
+	Home *Home
+}
+
+var (
+	_ component.Cronable = (*UpdateInstanceList)(nil)
+)
+
+func (*UpdateInstanceList) TaskName() string {
+	return "instance list"
+}
+
+func (ul *UpdateInstanceList) Cron(ctx context.Context) error {
+	names, err := ul.Home.instanceMap(ctx)
+	if err != nil {
+		return err
+	}
+
+	ul.Home.instanceNames.Set(names)
+	return nil
+}
+
+type UpdateRedirect struct {
+	component.Base
+	Home *Home
+}
+
+var (
+	_ component.Cronable = (*UpdateRedirect)(nil)
+)
+
+func (ur *UpdateRedirect) TaskName() string {
+	return "redirect"
+}
+
+func (ur *UpdateRedirect) Cron(ctx context.Context) error {
+	redirect, err := ur.Home.loadRedirect(ctx)
+	if err != nil {
+		return err
+	}
+
+	ur.Home.redirect.Set(&redirect)
+	return nil
+}
+
+type UpdateHome struct {
+	component.Base
+	Home *Home
+}
+
+var (
+	_ component.Cronable = (*UpdateHome)(nil)
+)
+
+func (ur *UpdateHome) TaskName() string {
+	return "home render"
+}
+
+func (ur *UpdateHome) Cron(ctx context.Context) error {
+	bytes, err := ur.Home.homeRender(ctx)
+	if err != nil {
+		return err
+	}
+
+	ur.Home.homeBytes.Set(bytes)
+	return nil
+}