Home,News: Seperate data and rendering

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

@@ -0,0 +1,86 @@
+package home
+
+import (
+	"context"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+	"github.com/FAU-CDI/wisski-distillery/internal/status"
+	"golang.org/x/sync/errgroup"
+)
+
+// loadInstances loads all the instances into the home route
+func (home *Home) loadInstances(ctx context.Context) ([]status.WissKI, error) {
+	// find all the WissKIs
+	wissKIs, err := home.Dependencies.Instances.All(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	instances := make([]status.WissKI, len(wissKIs))
+
+	// determine their infos
+	var eg errgroup.Group
+	for i, instance := range wissKIs {
+		i := i
+		wissKI := instance
+		eg.Go(func() (err error) {
+			instances[i], err = wissKI.Info().Information(ctx, false)
+			return
+		})
+	}
+	eg.Wait()
+
+	// and return the new instances
+	return instances, nil
+}
+
+// UpdateInstanceList updates the instances list of the home struct
+type UpdateInstanceList struct {
+	component.Base
+	Dependencies struct {
+		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.Dependencies.Home.instanceMap(ctx)
+	if err != nil {
+		return err
+	}
+
+	ul.Dependencies.Home.instanceNames.Set(names)
+	return nil
+}
+
+type UpdateHome struct {
+	component.Base
+	Dependencies struct {
+		Home *Home
+	}
+}
+
+var (
+	_ component.Cronable = (*UpdateHome)(nil)
+)
+
+func (ur *UpdateHome) TaskName() string {
+	return "home instances fetch"
+}
+
+func (ur *UpdateHome) Cron(ctx context.Context) error {
+	instances, err := ur.Dependencies.Home.loadInstances(ctx)
+	if err != nil {
+		return err
+	}
+
+	ur.Dependencies.Home.homeInstances.Set(instances)
+	return nil
+}